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    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Richfield

Avatar for Total Comfort Heating and Cooling

Total Comfort Heating and Cooling

8818 7th Ave N
4.51(
425
)
Approved Pro

Total Comfort Heating and Cooling

8818 7th Ave N
4.51(
425
)
Approved Pro
Customers say: Super punctual
540 local quotes requested
69 years of experience

Experience the Total Comfort Difference, since 1956. We sell different. We service different. As a certified Carrier dealer and a recipient of the 2024 President’s Award, you can "Turn to the experts" with Total Comfort proudly bringing Minneapolis-St. Paul expert heating and cooling solutions. From AC repair to furnace replacement, maintenance, and more, our skilled, award-winning team delivers quality, affordable HVAC services across the Twin Cities—from Brooklyn Park to Eden Prairie and everywhere in between! Since 1956, Total Comfort has been doing whatever it takes to ensure each customer is 100% satisfied with their heating and cooling service. As a locally owned, customer-focused company, our #1 goal is providing honest, quality work to our Minneapolis-St. Paul neighbors. Every job is performed with respect and courtesy, leaving you satisfied in a more comfortable home. For unparalleled HVAC services, experience the Total Comfort difference now! Contact us today for top-quality products and service from technicians with the latest industry knowledge.

"Replacing boiler expansion tank was fairly straightforward. Technicians were very thorough in bleeding system. Total cost includes initial visit."

Thomas P on May 2025

Experience the Total Comfort Difference, since 1956. We sell different. We service different. As a certified Carrier dealer and a recipient of the 2024 President’s Award, you can "Turn to the experts" with Total Comfort proudly bringing Minneapolis-St. Paul expert heating and cooling solutions. From AC repair to furnace replacement, maintenance, and more, our skilled, award-winning team delivers quality, affordable HVAC services across the Twin Cities—from Brooklyn Park to Eden Prairie and everywhere in between! Since 1956, Total Comfort has been doing whatever it takes to ensure each customer is 100% satisfied with their heating and cooling service. As a locally owned, customer-focused company, our #1 goal is providing honest, quality work to our Minneapolis-St. Paul neighbors. Every job is performed with respect and courtesy, leaving you satisfied in a more comfortable home. For unparalleled HVAC services, experience the Total Comfort difference now! Contact us today for top-quality products and service from technicians with the latest industry knowledge.

"Replacing boiler expansion tank was fairly straightforward. Technicians were very thorough in bleeding system. Total cost includes initial visit."

Thomas P on May 2025


Avatar for Dean's Home Services

Dean's Home Services

6701 Parkway Cir #600
3.92(
12
)
Approved Pro

Dean's Home Services

6701 Parkway Cir #600
3.92(
12
)
Approved Pro
Customers say: Super punctual
454 local quotes requested
29 years of experience

Dean’s Home Services is a licensed and bonded professional service company with over 100 years of combined industry experience. We started in plumbing, but we have expanded our services to include heating, air conditioning, electrical, drains, and excavation. Dean’s Home Services has served Minneapolis, St. Paul, and the surrounding Twin Cities area for over 25 years. As Minnesota’s premier home service company, we pride ourselves on our fast, professional, clean, and friendly service. We specialize in plumbing, heating, air, electrical, drain, and duct cleaning. Offering over 100 years of combined industry experience, our service professionals can handle all of your home service needs. Dean’s only works with properly certified, experienced service professionals who understand what it’s like to be a Twin Cities homeowner. Dean’s Home Services is a female and minority-owned local business as well as an active member of the PHCC and Nexstar organizations. Dean’s Home Services takes pride in the fact that its business is family-owned and operated. We understand firsthand the importance of family and the need to maintain a safe environment for your loved ones. Call us today to meet our family! DEAN’S PROFESSIONALS: - Respect you, your home, and your time - Listen to ensure we understand your unique situation - Help you understand what options are available - Present you with a price before the work begins - Happily perform the work you choose

"Shane, the plumber, cleared the drain clog. He was friendly, on time, knowledgeable, and answered all my questions. Shane estimated it would take an hour and it took only about half an hour. I was then charged a ridiculous $830. I feel I was way overcharged and am not happy with this. I do not recommend Dean's Home Services."

Beverly J on August 2025

Dean’s Home Services is a licensed and bonded professional service company with over 100 years of combined industry experience. We started in plumbing, but we have expanded our services to include heating, air conditioning, electrical, drains, and excavation. Dean’s Home Services has served Minneapolis, St. Paul, and the surrounding Twin Cities area for over 25 years. As Minnesota’s premier home service company, we pride ourselves on our fast, professional, clean, and friendly service. We specialize in plumbing, heating, air, electrical, drain, and duct cleaning. Offering over 100 years of combined industry experience, our service professionals can handle all of your home service needs. Dean’s only works with properly certified, experienced service professionals who understand what it’s like to be a Twin Cities homeowner. Dean’s Home Services is a female and minority-owned local business as well as an active member of the PHCC and Nexstar organizations. Dean’s Home Services takes pride in the fact that its business is family-owned and operated. We understand firsthand the importance of family and the need to maintain a safe environment for your loved ones. Call us today to meet our family! DEAN’S PROFESSIONALS: - Respect you, your home, and your time - Listen to ensure we understand your unique situation - Help you understand what options are available - Present you with a price before the work begins - Happily perform the work you choose

"Shane, the plumber, cleared the drain clog. He was friendly, on time, knowledgeable, and answered all my questions. Shane estimated it would take an hour and it took only about half an hour. I was then charged a ridiculous $830. I feel I was way overcharged and am not happy with this. I do not recommend Dean's Home Services."

Beverly J on August 2025


Avatar for Mike's Custom Mechanical

Mike's Custom Mechanical

20998 134th Ave N
4.22(
369
)
Approved Pro

Mike's Custom Mechanical

20998 134th Ave N
4.22(
369
)
Approved Pro
Customers say: Terrific value
74 local quotes requested
22 years of experience

Specializing in all phases of residential heating, plumbing, and cooling services and repairs. We serve the Twin Cities Metro area residentially and we also do commercial business under the name Priority Air Mechanical. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!

"Charged $1,000 for less than an hour of work with no material. I will NOT hire again."

Tim K on October 2024

Specializing in all phases of residential heating, plumbing, and cooling services and repairs. We serve the Twin Cities Metro area residentially and we also do commercial business under the name Priority Air Mechanical. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today!

"Charged $1,000 for less than an hour of work with no material. I will NOT hire again."

Tim K on October 2024


Avatar for Standard Heating & Air Conditioning Inc

Standard Heating & Air Conditioning Inc

130 Plymouth Ave N
4.81(
3,000
)
Approved Pro

Standard Heating & Air Conditioning Inc

130 Plymouth Ave N
4.81(
3,000
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
36 local quotes requested

At Standard Heating & Air Conditioning, we've been keeping Twin Cities homes comfortable since 1930. Our team of highly trained, certified technicians specializes in heating, cooling, and indoor air quality solutions tailored to your home and budget. Whether you need a seasonal tune-up, emergency repair, or a full system replacement, we’re here to help—with honest advice, upfront pricing, and industry-leading warranties. We don’t just fix HVAC systems—we build lasting relationships. Our technicians are background-checked, courteous, and committed to doing the job right the first time. We back our work with a satisfaction guarantee and go above and beyond to ensure your experience is seamless, from the first call to final inspection. Trust a local, family-owned company with over 90 years of proven expertise. Comfort is what we do. Service is who we are.

"Excellent service, as always. Mike was thorough, professional, and answered all my questions. Well done!"

Diane C on October 2025

At Standard Heating & Air Conditioning, we've been keeping Twin Cities homes comfortable since 1930. Our team of highly trained, certified technicians specializes in heating, cooling, and indoor air quality solutions tailored to your home and budget. Whether you need a seasonal tune-up, emergency repair, or a full system replacement, we’re here to help—with honest advice, upfront pricing, and industry-leading warranties. We don’t just fix HVAC systems—we build lasting relationships. Our technicians are background-checked, courteous, and committed to doing the job right the first time. We back our work with a satisfaction guarantee and go above and beyond to ensure your experience is seamless, from the first call to final inspection. Trust a local, family-owned company with over 90 years of proven expertise. Comfort is what we do. Service is who we are.

"Excellent service, as always. Mike was thorough, professional, and answered all my questions. Well done!"

Diane C on October 2025


Avatar for Pronto Heating & Air Conditioning

Pronto Heating & Air Conditioning

7415 Cahill Road
4.81(
1,488
)
Approved Pro

Pronto Heating & Air Conditioning

7415 Cahill Road
4.81(
1,488
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
83 local quotes requested

We serve Minneapolis & St Paul as well as the surrounding suburbs. We manage Pronto from a local office & we are committed to providing friendly, hassle-free service and employing only the best technicians. You may recognize us from another local air conditioning company. The Sedgwick family sold its business in 1999 to a national manufacturer and Wade and Greg stayed on to run the business from 1999 through March 2008. We opened Pronto because we felt we could provide a personalized experience and exceptional customer service by managing our entire business from a local office. We are committed to providing friendly, hassle-free service and employing only the best technicians. Pronto is proud to have won the Bryant 2009 Dealer of the Year award. The award is given each year to Bryant’s best dealer out of more than 4,000 dealers in North America.

"I have called and sent many emails/reviews. I have a disability and use metro mobility pronto keeps allowing their driver that lives in Friday to park their company vehicle in the street it prevents 2 way traffic metro mobility had to wait for the vehicle to clear before I could get picked up I was even late for my appointment. What a terrible way for a company to treat a person with a disability"

Linda P on June 2025

We serve Minneapolis & St Paul as well as the surrounding suburbs. We manage Pronto from a local office & we are committed to providing friendly, hassle-free service and employing only the best technicians. You may recognize us from another local air conditioning company. The Sedgwick family sold its business in 1999 to a national manufacturer and Wade and Greg stayed on to run the business from 1999 through March 2008. We opened Pronto because we felt we could provide a personalized experience and exceptional customer service by managing our entire business from a local office. We are committed to providing friendly, hassle-free service and employing only the best technicians. Pronto is proud to have won the Bryant 2009 Dealer of the Year award. The award is given each year to Bryant’s best dealer out of more than 4,000 dealers in North America.

"I have called and sent many emails/reviews. I have a disability and use metro mobility pronto keeps allowing their driver that lives in Friday to park their company vehicle in the street it prevents 2 way traffic metro mobility had to wait for the vehicle to clear before I could get picked up I was even late for my appointment. What a terrible way for a company to treat a person with a disability"

Linda P on June 2025


Avatar for HVAC Doctor LLC

HVAC Doctor LLC

1601 67th Ave N
5.00(
24
)
Approved Pro

HVAC Doctor LLC

1601 67th Ave N
5.00(
24
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
32 local quotes requested

We guarantee to grant full service that meets all your needs by providing quality service at affordable prices! For over one decade, the HVAC Doctor has concentrated on something more important than simple brand-recognition consumer advertising. We focused on helping homeowners achieve reliable, high-quality, and affordable indoor comfort with products that continue to be designed, engineered and assembled in the U.S.A. at Refreshingly Affordable Prices. Call today for a free estimate!

"Vitaliy and his team were fantastic! The furnace and AC installation was handled with knowledge and professionalism. They were competitive in pricing, no pressure and made the whole experience a breeze. I wouldn't hesitate to recommend them!"

Steve B on November 2024

We guarantee to grant full service that meets all your needs by providing quality service at affordable prices! For over one decade, the HVAC Doctor has concentrated on something more important than simple brand-recognition consumer advertising. We focused on helping homeowners achieve reliable, high-quality, and affordable indoor comfort with products that continue to be designed, engineered and assembled in the U.S.A. at Refreshingly Affordable Prices. Call today for a free estimate!

"Vitaliy and his team were fantastic! The furnace and AC installation was handled with knowledge and professionalism. They were competitive in pricing, no pressure and made the whole experience a breeze. I wouldn't hesitate to recommend them!"

Steve B on November 2024


Avatar for McQuillan Home Services, LLC

McQuillan Home Services, LLC

1727 E Hwy 36
4.04(
188
)
Approved Pro

McQuillan Home Services, LLC

1727 E Hwy 36
4.04(
188
)
Approved Pro
Customers say: Quality work
53 local quotes requested
142 years of experience

Since 1883 McQuillan Home Services has been Minnesota’s Original plumbing, heating, and cooling company. At McQuillan we’ve always remained true to our mission of providing solid, honest work to all our customers. Join the McQuillan Home Services family as we continue to raise the bar and provide generations of happy customers with quality plumbing, heating, AC, electrical, and drains service.

"Last fall as I prepared to deploy to the Middle East with the Minnesota National Guard, we decided to replace our boiler, so my wife wouldn’t have any added stress while I was gone. The opposite has occurred. After I left, the boiler and hot water system was installed in. That went fine though they left a big hole in the floor when they removed the old boiler. Shortly after the new boiler began having problems losing pressure and my wife smelled gas. When the pressure drops below a certain level the furnace shuts off, so the house gets cold and there is no hot water. McQuillan came out and looked at the system, determined that the expansion tank had failed and replaced it. They said the gas smell was just old pipes. Things worked for a bit, but then started losing pressure and shutting off again. McQuillan came out, added water and the system came back on. A week or so later, no pressure, no heat or hot water. McQuillan comes out and determines the expansion tank had failed again. It gets replaced, water added, the system is back on. They showed my wife how to add water to keep the pressure up In asking what was causing the problem, McQuillan kept telling us that its an old house, and you have leaky radiators. We looked. A couple of radiators had a little rust line from the valves, but no water and the pipes were dry when our carpenter touched them with a Kleenex to check for leaks or moisture. Through out the winter, this keeps happening with my wife having to regularly go down in the basement to add water. She keeps looking for any sign of water leaks around all the radiators and heating pipes. It is frustrating and stressful. In early March, after being gone for the weekend, she came home and the boiler was out and the house near freezing. McQuillan put in an automatic fill valve to add water whenever the pressure dropped. Still insisting that the pressure loss had to be leaky radiator valves. When I heard about this from my wife I asked if they had done a pressure test on the system to try to determine where the leak was occurring. McQuillan said no, that isn’t standard procedure. (Other boiler installers said it is the standard). We hadn’t been able to find any water leaks from any of the radiators or pipes we could see, so I didn’t want to keep pumping water in afraid that the leak might be hidden somewhere. So I had my wife turn it off unless she was going to be gone for more than a day. The pressure loss keeps happening. Also the gas smell is still there, so my wife called the gas company to come out and check. They found not one but two leaks in the gas connection creating a danger significant enough that the gas company immediately turned off our gas in the middle of the winter. At this point McQuillan had been out to the house 6-8 time and things were still not right. We tell them the systems isn’t working and they need to start over. McQuillan goes through the system again and fixes the gas leak. They determined that the expansion tank was actually too small for our system and replaced it with a bigger one. Soon again no pressure. Not being able to find any leaks throughout the house, but unable to account for the pressure loss, we start to consider replacing the valves that showed a little rust. But I wasn’t convinced that was the problem as we weren’t seeing any water. We continued to push to have them reinstall the system. After the tenth+ visit to the house, McQuillan arranged to have the local rep from the boiler manufacturer come out to look at the system. During this they finally decide to do a pressure test. When the boiler was isolated and a pressure test was done, it was discovered that there was a crack inside the boiler. This took no more than 45 minutes. The water leaking to create the pressure drop was running from the crack inside the boiler through the condensation hose to the laundry sink—which is why there was never any water on the floor. So at this point they replace the system and four radiator valves that showed some rust. We will see how this winter goes. Regardless of whether or not it is your standard protocol to pressure test at the time you install a boiler, about the second time you were called out because of a loss of pressure it would have been the prudent thing to do to determine what the actual problem was. Certainly it should have been done before installing the auto-fill device, which only masked the problem by adding more water whenever enough had leaked out somewhere. If there had been a hidden leak in the piping, all that continuous leaking could have led to significant damage. While they didn’t charge us to replace four radiator valves, because they didn’t pressure test the systems, we don’t know if the valves actually needed replacing. The value of replacing something that may or may not of needed replacing is speculative at best.  As a result of all this, my wife had to miss multiple days of work dealing with all these issues that we should never have had to deal with, and were exactly what we were trying to avoid with having McQuillian install a new boiler. Instead, a complete nightmare at a time when my family was under intense stress already. We still have a hole in the floor."

Nick S on October 2019

Since 1883 McQuillan Home Services has been Minnesota’s Original plumbing, heating, and cooling company. At McQuillan we’ve always remained true to our mission of providing solid, honest work to all our customers. Join the McQuillan Home Services family as we continue to raise the bar and provide generations of happy customers with quality plumbing, heating, AC, electrical, and drains service.

"Last fall as I prepared to deploy to the Middle East with the Minnesota National Guard, we decided to replace our boiler, so my wife wouldn’t have any added stress while I was gone. The opposite has occurred. After I left, the boiler and hot water system was installed in. That went fine though they left a big hole in the floor when they removed the old boiler. Shortly after the new boiler began having problems losing pressure and my wife smelled gas. When the pressure drops below a certain level the furnace shuts off, so the house gets cold and there is no hot water. McQuillan came out and looked at the system, determined that the expansion tank had failed and replaced it. They said the gas smell was just old pipes. Things worked for a bit, but then started losing pressure and shutting off again. McQuillan came out, added water and the system came back on. A week or so later, no pressure, no heat or hot water. McQuillan comes out and determines the expansion tank had failed again. It gets replaced, water added, the system is back on. They showed my wife how to add water to keep the pressure up In asking what was causing the problem, McQuillan kept telling us that its an old house, and you have leaky radiators. We looked. A couple of radiators had a little rust line from the valves, but no water and the pipes were dry when our carpenter touched them with a Kleenex to check for leaks or moisture. Through out the winter, this keeps happening with my wife having to regularly go down in the basement to add water. She keeps looking for any sign of water leaks around all the radiators and heating pipes. It is frustrating and stressful. In early March, after being gone for the weekend, she came home and the boiler was out and the house near freezing. McQuillan put in an automatic fill valve to add water whenever the pressure dropped. Still insisting that the pressure loss had to be leaky radiator valves. When I heard about this from my wife I asked if they had done a pressure test on the system to try to determine where the leak was occurring. McQuillan said no, that isn’t standard procedure. (Other boiler installers said it is the standard). We hadn’t been able to find any water leaks from any of the radiators or pipes we could see, so I didn’t want to keep pumping water in afraid that the leak might be hidden somewhere. So I had my wife turn it off unless she was going to be gone for more than a day. The pressure loss keeps happening. Also the gas smell is still there, so my wife called the gas company to come out and check. They found not one but two leaks in the gas connection creating a danger significant enough that the gas company immediately turned off our gas in the middle of the winter. At this point McQuillan had been out to the house 6-8 time and things were still not right. We tell them the systems isn’t working and they need to start over. McQuillan goes through the system again and fixes the gas leak. They determined that the expansion tank was actually too small for our system and replaced it with a bigger one. Soon again no pressure. Not being able to find any leaks throughout the house, but unable to account for the pressure loss, we start to consider replacing the valves that showed a little rust. But I wasn’t convinced that was the problem as we weren’t seeing any water. We continued to push to have them reinstall the system. After the tenth+ visit to the house, McQuillan arranged to have the local rep from the boiler manufacturer come out to look at the system. During this they finally decide to do a pressure test. When the boiler was isolated and a pressure test was done, it was discovered that there was a crack inside the boiler. This took no more than 45 minutes. The water leaking to create the pressure drop was running from the crack inside the boiler through the condensation hose to the laundry sink—which is why there was never any water on the floor. So at this point they replace the system and four radiator valves that showed some rust. We will see how this winter goes. Regardless of whether or not it is your standard protocol to pressure test at the time you install a boiler, about the second time you were called out because of a loss of pressure it would have been the prudent thing to do to determine what the actual problem was. Certainly it should have been done before installing the auto-fill device, which only masked the problem by adding more water whenever enough had leaked out somewhere. If there had been a hidden leak in the piping, all that continuous leaking could have led to significant damage. While they didn’t charge us to replace four radiator valves, because they didn’t pressure test the systems, we don’t know if the valves actually needed replacing. The value of replacing something that may or may not of needed replacing is speculative at best.  As a result of all this, my wife had to miss multiple days of work dealing with all these issues that we should never have had to deal with, and were exactly what we were trying to avoid with having McQuillian install a new boiler. Instead, a complete nightmare at a time when my family was under intense stress already. We still have a hole in the floor."

Nick S on October 2019


"Fast and efficient service next day. Estimate given up front and was spot on. Made sure things were working properly after leaking valve replaced. Tested water and secured unit under sink."

Greg W on August 2025

Aquarius Home Services is the top home service provider in Minnesota and Wisconsin. Offering expert service in HVAC, Water Softeners, Plumbing and Electrical . Our work is backed by a 100% performance guarantee.

"Fast and efficient service next day. Estimate given up front and was spot on. Made sure things were working properly after leaking valve replaced. Tested water and secured unit under sink."

Greg W on August 2025


Avatar for Finch Home Solutions, LLC

Finch Home Solutions, LLC

201 Pottok Lane
4.79(
41
)
Approved Pro

Finch Home Solutions, LLC

201 Pottok Lane
4.79(
41
)
Approved Pro
Customers say: Quick response
71 local quotes requested
17 years of experience

No project is too big or small for Finch Home Solutions—your trusted residential electrical specialists. With years of experience, we handle everything from minor repairs to full home rewires with precision and care. Whether you're facing flickering lights, tripping breakers, or need an EV charger installed, our expert team delivers reliable, code-compliant service tailored to your needs. We prioritize safety, efficiency, and customer satisfaction, offering energy-saving solutions that enhance your home’s performance. At Finch Home Solutions, we treat every home like our own, combining professionalism with a friendly, approachable attitude. Count on us to keep your electrical system running safely and smoothly for years to come

"They did good work, but I thought they were a little pricey at 317 dollars for that job."

Jeff B on September 2025

No project is too big or small for Finch Home Solutions—your trusted residential electrical specialists. With years of experience, we handle everything from minor repairs to full home rewires with precision and care. Whether you're facing flickering lights, tripping breakers, or need an EV charger installed, our expert team delivers reliable, code-compliant service tailored to your needs. We prioritize safety, efficiency, and customer satisfaction, offering energy-saving solutions that enhance your home’s performance. At Finch Home Solutions, we treat every home like our own, combining professionalism with a friendly, approachable attitude. Count on us to keep your electrical system running safely and smoothly for years to come

"They did good work, but I thought they were a little pricey at 317 dollars for that job."

Jeff B on September 2025


Avatar for Air Knights Heating & Cooling, Inc.

Air Knights Heating & Cooling, Inc.

5885 149th St W, Ste 101E
4.33(
415
)
Approved Pro

Air Knights Heating & Cooling, Inc.

5885 149th St W, Ste 101E
4.33(
415
)
Approved Pro
Customers say: Quality work
137 local quotes requested
13 years of experience

Air Knights Heating & Cooling: Serves residential and commercial properties in the greater Minneapolis - St Paul MN area. Experienced HVAC technicians available 24/7/365. NO EXTRA CHARGE for emergency or after hours furnace and AC repair. Your full service contractor for HVAC repair, maintenance, tune-up and installation. Installs LENNOX and GOODMAN HVAC systems; furnaces, air conditioners, humidifiers and dehumidifiers. Repairs and services ALL BRANDS. Accepts credit cards. Financing available. We take full pride in what we do and treat your home as if it was our own. Give us a call for a free estimate. Air Knights Heating & Cooling is a local, family owned and operated business.

"Fast service, found the issue and repaired. Fair price. Thank you "

Brett H on October 2025

Air Knights Heating & Cooling: Serves residential and commercial properties in the greater Minneapolis - St Paul MN area. Experienced HVAC technicians available 24/7/365. NO EXTRA CHARGE for emergency or after hours furnace and AC repair. Your full service contractor for HVAC repair, maintenance, tune-up and installation. Installs LENNOX and GOODMAN HVAC systems; furnaces, air conditioners, humidifiers and dehumidifiers. Repairs and services ALL BRANDS. Accepts credit cards. Financing available. We take full pride in what we do and treat your home as if it was our own. Give us a call for a free estimate. Air Knights Heating & Cooling is a local, family owned and operated business.

"Fast service, found the issue and repaired. Fair price. Thank you "

Brett H on October 2025

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Heating and Air Conditioning questions, answered by experts

When your HVAC system is loud, a few different causes are possible. If you have loose connections or bolts in the hardware, they can rattle as the system runs and vibrates. If you have an extremely dirty furnace filter, it could cause the system to generate noise. More commonly, an excessively loud HVAC system indicates a malfunction in the system. You may have a blower motor that is close to failing or a compressor that is breaking down. These issues require an immediate inspection.

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

If you don’t clean your AC coils, dirt and debris build up inside your unit, making transferring heat more difficult. As a result, your HVAC system will work harder to run, potentially increasing your energy usage and utility bills. Neglected coils may also become corroded, which can lead to refrigerant leaks and mold growth—both of which can cause a slew of negative health impacts.

While it is possible to add Freon to your AC unit yourself, it is not recommended. In fact, the U.S. Environmental Protection Agency (EPA) prohibits the handling of Freon without a license. Freon is a dangerous gas that can cause irreversible damage to your AC or yourself if not installed correctly. It is worthwhile to hire a professional to add Freon to your AC.

A dirty AC filter can lower the efficiency of your system, so depending on how dirty it was, you may notice a temperature difference when you clean your filter. You can try other solutions if your AC isn’t blowing as cold as it used to. You can call in a local HVAC tech to make sure everything is running correctly, fix your air seal if it’s a window unit, and clean your coils.

The Richfield, MN homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.