Top-rated heating and air conditioning pros.

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

Enter your zip and get matched with up to 5 pros

TRUSTED BY BOULDER, CO HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon480
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Boulder

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
283 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


"Great service"

Vince M on September 2025

Here at Tipping Hat Plumbing, Heating & Electric our focus is Good Old Fashioned Service. Plumbing, Heating, Cooling, Drain Cleaning and Electric service that is done right, that will last and skillfully completed by one of our hard working, courteous service specialists.

"Great service"

Vince M on September 2025


Avatar for Attraction Heating & Cooling

Attraction Heating & Cooling

5.00(
1
)
Approved Pro

Attraction Heating & Cooling

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 local quotes requested

In Business Since 2015 Attraction Heating & Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It went great. Mike and his team where on time, on budget and very professional. Will hire again. Thanks Mike!"

Chuck M on January 2025

In Business Since 2015 Attraction Heating & Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It went great. Mike and his team where on time, on budget and very professional. Will hire again. Thanks Mike!"

Chuck M on January 2025


"My dad is elderly and needed a new HVAC system. So I decided to find a person who could install a new HVAC system and we found Cody. Cody was very friendly, honest, and communicated very well. At one point he told us we could probably go another 3-5 years with the current system, but since my dad only has so many years left we told he to go ahead and install a whole new system in. He treated us like gold and even spent the time showing my Dad all the new features with the thermostat. I would highly recommend Cody for any repairs or HVAC needs you have."

Brian T on June 2021

We offer all of your residential and commercial needs at a competitive price. We provide complete installs, repairs, emergency calls as well as full service for your ac, furnace, water heaters and swamp coolers.

"My dad is elderly and needed a new HVAC system. So I decided to find a person who could install a new HVAC system and we found Cody. Cody was very friendly, honest, and communicated very well. At one point he told us we could probably go another 3-5 years with the current system, but since my dad only has so many years left we told he to go ahead and install a whole new system in. He treated us like gold and even spent the time showing my Dad all the new features with the thermostat. I would highly recommend Cody for any repairs or HVAC needs you have."

Brian T on June 2021


Avatar for Controlling Systems

Controlling Systems

4.31(
13
)
Approved Pro

Controlling Systems

4.31(
13
)
Approved Pro
Customers say: Quick response
25 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
15 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


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
77 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 AIR PRIME

AIR PRIME

5.00(
1
)

AIR PRIME

5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

At our HVAC services company, we are driven by a steadfast commitment to customer satisfaction. Our goal is not just to meet but to exceed expectations, ensuring that every customer is delighted with the work we do. This dedication is deeply rooted in our core value of integrity, guiding every interaction and decision we make. We believe in conducting business with honesty, transparency, and ethical behavior, building trust with our clients every step of the way. Our comprehensive services include expert installation, meticulous maintenance, and responsive service for all your HVAC systems and equipment needs.

"profesionales"

Juan P on September 2024

At our HVAC services company, we are driven by a steadfast commitment to customer satisfaction. Our goal is not just to meet but to exceed expectations, ensuring that every customer is delighted with the work we do. This dedication is deeply rooted in our core value of integrity, guiding every interaction and decision we make. We believe in conducting business with honesty, transparency, and ethical behavior, building trust with our clients every step of the way. Our comprehensive services include expert installation, meticulous maintenance, and responsive service for all your HVAC systems and equipment needs.

"profesionales"

Juan P on September 2024


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.


Avatar for ALLOY Heating and Cooling

ALLOY Heating and Cooling

No reviews yet

ALLOY Heating and Cooling

No reviews yet
1 years of experience

We are a Colorado based, locally owned and operated HVAC full-service company. We have a highly skilled team that does residential and commercial maintenance and installation services as well as blue-print review and permitting assistance for general contractors. We price ourselves in customer service, reasonable pricing and quality work.

We are a Colorado based, locally owned and operated HVAC full-service company. We have a highly skilled team that does residential and commercial maintenance and installation services as well as blue-print review and permitting assistance for general contractors. We price ourselves in customer service, reasonable pricing and quality work.

...
Showing 1-10 of 203
Heating and Air Conditioning questions, answered by experts

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

If there’s a freon leak in your home’s AC unit, it will cause the system to work overtime to cool the house. That issue will result in higher energy bills and it will take much longer for cool air to disperse throughout the home. If your system has a freon leak during the summer, it can make hot days miserable. That’s why it’s important to hire an HVAC professional to resolve a freon leak as quickly as possible.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

A window AC unit is not completely silent. You’ll hear the sound of air blowing, and if you put your ear right up next to the unit, you may hear a slight hiss or gurgle as the refrigerant flows through the system. That said, if your system is making a running water sound, a loud banging sound, a grinding sound, or physically vibrating, you may be facing an issue or malfunction with your AC unit.

Unlike other types of air conditioning, portable units don’t require venting or any other associated parts like hoses. For that reason, they don’t function the same as their counterparts, but will do a similarly good job of cooling down small spaces and won’t require any installation or much maintenance.

The Boulder, 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.