Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Longmont, CO

There are 27 highly-rated local heating and air conditioning pros.

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    Average homeowner rating
  • Verified reviews icon799
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Longmont

Avatar for Behold Heating & Cooling Services

Behold Heating & Cooling Services

4.94(
33
)
Approved Pro

Behold Heating & Cooling Services

4.94(
33
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
293 local quotes requested

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"My water heater had gone out and called and called around trying to get quotes and big company’s were trying to schedule in person quotes which I know is a strong arm to get the work done then and there because they are already at your house ect. But with Behold I had a personal direct text from them asking about my situation and all I had to do was give some info send in pictures and voilà! They gave me their quote(2300$) which also beat all the company’s(3k$+) I had heard from! They had a tech out to me ASAP. It almost could’ve been same day but I was in no rush. Hunter came in and did it all him self of removal of old and installing new in just two hours! They are great to work worth and will definitely recommend and go to again."

London A on November 2025

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"My water heater had gone out and called and called around trying to get quotes and big company’s were trying to schedule in person quotes which I know is a strong arm to get the work done then and there because they are already at your house ect. But with Behold I had a personal direct text from them asking about my situation and all I had to do was give some info send in pictures and voilà! They gave me their quote(2300$) which also beat all the company’s(3k$+) I had heard from! They had a tech out to me ASAP. It almost could’ve been same day but I was in no rush. Hunter came in and did it all him self of removal of old and installing new in just two hours! They are great to work worth and will definitely recommend and go to again."

London A on November 2025


Avatar for Controlling Systems

Controlling Systems

4.31(
13
)
Approved Pro

Controlling Systems

4.31(
13
)
Approved Pro
Customers say: Quick response
28 local quotes requested
49 years of experience

Established in 1976. For over 45 years Controlling Systems has served the Colorado front range, providing unsurpassed customer service and relentless pursuit of customer satisfaction. Heating, hot water heater and air conditioning service, maintenance, sales and installation

"Every step, from the estimate with the super friendly Ryan, to the final walk-thru with the always professional Gemini, was absolutely top notch. They installed a new furnace, A/C, and tankless water heater and we are very happy with the work and final outcome. The whole crew was wonderful!"

Izabel K on July 2022

Established in 1976. For over 45 years Controlling Systems has served the Colorado front range, providing unsurpassed customer service and relentless pursuit of customer satisfaction. Heating, hot water heater and air conditioning service, maintenance, sales and installation

"Every step, from the estimate with the super friendly Ryan, to the final walk-thru with the always professional Gemini, was absolutely top notch. They installed a new furnace, A/C, and tankless water heater and we are very happy with the work and final outcome. The whole crew was wonderful!"

Izabel K on July 2022


Savage Heating and Air LLC

5.00(
1
)
Approved Pro

Savage Heating and Air LLC

5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

In Business Since 2023 SAVAGE HEATING AND AIR, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 8 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Savage Heating and Air has extensive knowledge on all my HVAC needs. Very nice and professional"

Andrew N on December 2024

In Business Since 2023 SAVAGE HEATING AND AIR, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 8 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Savage Heating and Air has extensive knowledge on all my HVAC needs. Very nice and professional"

Andrew N on December 2024


"Matt was very knowledgeable and efficient in repairing the floor at our entrance way in the laundry room. Would recommend his services. "

Tammy B on November 2025

Cransten is the best handyman and remodeling experience in the US. Our team is vetted, trained, background checked, and amazing at what we do. We are licensed and insured. Get a free quote from us today and see what we can do to help create your dream home!

"Matt was very knowledgeable and efficient in repairing the floor at our entrance way in the laundry room. Would recommend his services. "

Tammy B on November 2025


Avatar for Heart Heating, Cooling, Plumbing & Electric

Heart Heating, Cooling, Plumbing & Electric

4.91(
68
)
Approved Pro

Heart Heating, Cooling, Plumbing & Electric

4.91(
68
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
489 local quotes requested

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Great service, quick diagnostics, fast repair. Tech super nice and knowledgeable!!"

Jim L on July 2025

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Great service, quick diagnostics, fast repair. Tech super nice and knowledgeable!!"

Jim L on July 2025


Avatar for Lion Home Service

Lion Home Service

4.59(
68
)
Approved Pro

Lion Home Service

4.59(
68
)
Approved Pro
Super Service Award
Customers say: Super punctual
247 local quotes requested
16 years of experience

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"Matt was very prompt, professional and informative. We would highly recommend Lion Hone services . Lion Home Services was responsive and communicated well each step of the way."

Mary S on November 2025

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"Matt was very prompt, professional and informative. We would highly recommend Lion Hone services . Lion Home Services was responsive and communicated well each step of the way."

Mary S on November 2025


Avatar for Limelight Services LLC

Limelight Services LLC

4.75(
16
)
Approved Pro

Limelight Services LLC

4.75(
16
)
Approved Pro
Customers say: Quick response
240 local quotes requested
17 years of experience

Limelight Services is the only family owned, Google 5-star-average (with 1300+ reviews) electrical, plumbing, and HVAC home services company located in Northern Colorado. We pride ourselves in finding creative solutions to your needs, from the simplest troubleshooting problem to the most complex project. We are your on-time, same day electrician, plumber, and HVAC specialist. We strive to offer 5 star service from the first moment we communicate, and for years to come. Our goal is to be your home services company of choice for as long as you own a home in Northern Colorado. We understand that we must be exceptional for that to happen, and we do all we can to live up to our promises. The result? The level of quality and care experienced by our customers. We would be honored to have an opportunity to earn your business. Thank you for taking the time to find out more about us, we hope to hear from you soon.

"Tony did a great job replacing my broken 50 gallon self venting hot water heater. It is in a difficult space to maneuver getting the old one out and the new one in. He did a great job updating what needed to be done (in my old 1910 home so there is always something!) and I feel very confident in their work. Limelight is my go to place and am so glad I found them!"

Ruth W on May 2025

Limelight Services is the only family owned, Google 5-star-average (with 1300+ reviews) electrical, plumbing, and HVAC home services company located in Northern Colorado. We pride ourselves in finding creative solutions to your needs, from the simplest troubleshooting problem to the most complex project. We are your on-time, same day electrician, plumber, and HVAC specialist. We strive to offer 5 star service from the first moment we communicate, and for years to come. Our goal is to be your home services company of choice for as long as you own a home in Northern Colorado. We understand that we must be exceptional for that to happen, and we do all we can to live up to our promises. The result? The level of quality and care experienced by our customers. We would be honored to have an opportunity to earn your business. Thank you for taking the time to find out more about us, we hope to hear from you soon.

"Tony did a great job replacing my broken 50 gallon self venting hot water heater. It is in a difficult space to maneuver getting the old one out and the new one in. He did a great job updating what needed to be done (in my old 1910 home so there is always something!) and I feel very confident in their work. Limelight is my go to place and am so glad I found them!"

Ruth W on May 2025


Avatar for Time Plumbing, Heating & Electric INC

Time Plumbing, Heating & Electric INC

4.73(
26
)
Approved Pro

Time Plumbing, Heating & Electric INC

4.73(
26
)
Approved Pro
Customers say: Quick response
80 local quotes requested
42 years of experience

Founded in 1983, Time Plumbing, Heating & Electric Inc. has been serving the Denver, CO area with their plumbing, heating and electrical needs. If you have a drain that needs cleaning, a heater installed, or your panel box upgraded, then call the experts at Time Plumbing, Heating & Electric Inc. They are excited to hear from you so make the call now for your next appointment!

"So I've just sold my home in Lakewood and the Technicians at Time have come to repair a furnace motor and correct an code violation in my electrical panel that the city missed when I stalled 4 years ago. Their service has always been excellent. Madison returns messages first thing in the morning. The electrician Kevin Wendt explained the code violations clearly and corrected in 2 hours. I forgot the young man who repaired my furnace but he found the last motor in town for my model, potentially saving me having to spend thousands more. Home repair is never a pleasant experience but 3 times over the last decade, this business has given me peace of mind and fixed all issues quickly and professionally. Richard Gainer"

Richard G on April 2023

Founded in 1983, Time Plumbing, Heating & Electric Inc. has been serving the Denver, CO area with their plumbing, heating and electrical needs. If you have a drain that needs cleaning, a heater installed, or your panel box upgraded, then call the experts at Time Plumbing, Heating & Electric Inc. They are excited to hear from you so make the call now for your next appointment!

"So I've just sold my home in Lakewood and the Technicians at Time have come to repair a furnace motor and correct an code violation in my electrical panel that the city missed when I stalled 4 years ago. Their service has always been excellent. Madison returns messages first thing in the morning. The electrician Kevin Wendt explained the code violations clearly and corrected in 2 hours. I forgot the young man who repaired my furnace but he found the last motor in town for my model, potentially saving me having to spend thousands more. Home repair is never a pleasant experience but 3 times over the last decade, this business has given me peace of mind and fixed all issues quickly and professionally. Richard Gainer"

Richard G on April 2023


Avatar for Deans Design and Remodeling

Deans Design and Remodeling

5.00(
3
)
Approved Pro

Deans Design and Remodeling

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
69 local quotes requested

Deans Design and Remodeling is a trusted name in the construction and contracting industry, specializing in residential and commercial renovations. With a commitment to quality craftsmanship and customer satisfaction, the company offers tailored remodeling solutions that enhance the value, functionality, and aesthetics of every space. Their team combines innovative design expertise with hands-on construction experience, ensuring each project is delivered on time and within budget.

"Kyle and Justin Dean demoed, redesigned, and built 2 decks and a pergola for me. They are professional and provide outstanding quality work. They are knowledgeable and had great design ideas for my projects. Communicated well with me on all work and costs. Highly recommend and will use again."

Leigh R on June 2025

Deans Design and Remodeling is a trusted name in the construction and contracting industry, specializing in residential and commercial renovations. With a commitment to quality craftsmanship and customer satisfaction, the company offers tailored remodeling solutions that enhance the value, functionality, and aesthetics of every space. Their team combines innovative design expertise with hands-on construction experience, ensuring each project is delivered on time and within budget.

"Kyle and Justin Dean demoed, redesigned, and built 2 decks and a pergola for me. They are professional and provide outstanding quality work. They are knowledgeable and had great design ideas for my projects. Communicated well with me on all work and costs. Highly recommend and will use again."

Leigh R on June 2025


Avatar for Homerun Heating & Air

Homerun Heating & Air

No reviews yet

Homerun Heating & Air

No reviews yet
30 years of experience

Established in 1995 and based out of beautiful Longmont, Colorado. HomeRun Heating & Air serves residential, multi-family and commercial HVAC needs across the Front Range from Denver to Fort Collins. Providing quality products from industry partners such as Carrier, Heil, Champion, iWave and many others; choosing HomeRun to service, repair, retrofit or completely install your (HVAC) heating and cooling system, will leave you in exceptional comfort 24 hours a day. Call us today at (303) 682-9504 or schedule an appointment/consultation.

Established in 1995 and based out of beautiful Longmont, Colorado. HomeRun Heating & Air serves residential, multi-family and commercial HVAC needs across the Front Range from Denver to Fort Collins. Providing quality products from industry partners such as Carrier, Heil, Champion, iWave and many others; choosing HomeRun to service, repair, retrofit or completely install your (HVAC) heating and cooling system, will leave you in exceptional comfort 24 hours a day. Call us today at (303) 682-9504 or schedule an appointment/consultation.

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Heating and Air Conditioning questions, answered by experts

For most systems, an annual HVAC system service is more than enough. Some homeowners prefer a twice-a-year visit to ensure the system is ready for the upcoming summer and winter seasons. If you need to call an HVAC pro more often than this, it may be time to check if your system is getting old enough for a replacement.

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

An air conditioner’s watt usage depends on multiple factors, including the type of AC unit, its size, and how often you use it. With that said, most central air conditioners consume between 3,000 and 3,500 watts. Meanwhile, window AC units use 900 to 1,400 watts, and portable air conditioners consume 2,900 to 4,100 watts.

There are a few things you can do to make your AC repair technician’s job easier and your home more comfortable while you wait for AC repair:

  • Cut back trees, shrubs, and weeds around the outdoor compressor 

  • Clear a pathway inside and outside to your AC components

  • Set up a ladder for attic access if necessary

  • Pull your window AC out of the window and place in an easily accessible spot

  • Supplement with fans and open windows to help keep your house comfortable

Most HVAC surge protectors last about three to five years, depending on how often your home experiences blackouts or brownouts. If your unit is susceptible to more frequent electrical surges, consider replacing your surge protector every two years. Consult your HVAC professional to determine when and how often to replace your HVAC surge protectors.

The Longmont, CO 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.