Top-rated heating and air conditioning pros.

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

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

TRUSTED BY LITTLETON, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Littleton

Avatar for Behold Heating & Cooling Services

Behold Heating & Cooling Services

5.00(
32
)
Approved Pro

Behold Heating & Cooling Services

5.00(
32
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
319 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".

"The guys from Behold were great for our water heater replacement. Super easy to communicate with, hard working, and great results. They explained everything along the way and we are happy with the work."

Josh D 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".

"The guys from Behold were great for our water heater replacement. Super easy to communicate with, hard working, and great results. They explained everything along the way and we are happy with the work."

Josh D on November 2025


Avatar for Viking Inc. Heating, A/C & Misc. Plumbing, Inc.

Viking Inc. Heating, A/C & Misc. Plumbing, Inc.

5.00(
9
)
Approved Pro

Viking Inc. Heating, A/C & Misc. Plumbing, Inc.

5.00(
9
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

Family owned & operated for over 35 yrs. Honest & reliable heating and A/C which includes repair and service of all brand furnaces, boilers and A/C. New installation of furnaces, boilers & A/C. Humidifiers, water heaters, air cleaners and misc. plumbing issues. Install new gas lines for adding stoves, driers etc.; New construction

"Great! went down to my basement to find water of the floor. Called Viking, they put in my air conditioner last summer. They came out and took a look and both unites were leaking. They removed the leaking heaters and installed the new ones that afternoon. I highly recommend them. Family owned and it shows in the quality of their work!"

Hayden F on June 2020

Family owned & operated for over 35 yrs. Honest & reliable heating and A/C which includes repair and service of all brand furnaces, boilers and A/C. New installation of furnaces, boilers & A/C. Humidifiers, water heaters, air cleaners and misc. plumbing issues. Install new gas lines for adding stoves, driers etc.; New construction

"Great! went down to my basement to find water of the floor. Called Viking, they put in my air conditioner last summer. They came out and took a look and both unites were leaking. They removed the leaking heaters and installed the new ones that afternoon. I highly recommend them. Family owned and it shows in the quality of their work!"

Hayden F on June 2020


Avatar for Attraction Heating & Cooling

Attraction Heating & Cooling

5.00(
2
)
Approved Pro

Attraction Heating & Cooling

5.00(
2
)
Approved Pro
Customers say: Quick response
18 local quotes requested
10 years of experience

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


Avatar for Sentri Homes

Sentri Homes

No reviews yet

Sentri Homes

No reviews yet
303 local quotes requested

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


NexGen Hvac

No reviews yet

NexGen Hvac

No reviews yet
15 years of experience

At NexGen hvac, we roll out red carpet treatment. Your experience with us will be five-star from start to finish. We do it right, the first time, guaranteed.

At NexGen hvac, we roll out red carpet treatment. Your experience with us will be five-star from start to finish. We do it right, the first time, guaranteed.


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.


Avatar for Spencer Garrison

Spencer Garrison

No reviews yet

Spencer Garrison

No reviews yet
1 years of experience

Residential HVAC service and install. Indoor air quality service and install (Humidifiers, Air purifiers, HRV, ERV, Filtration boxes). 10+ years in the HVAC industry. EPA universal certification.

Residential HVAC service and install. Indoor air quality service and install (Humidifiers, Air purifiers, HRV, ERV, Filtration boxes). 10+ years in the HVAC industry. EPA universal certification.


Avatar for McCullough Services

McCullough Services

No reviews yet

McCullough Services

No reviews yet
1 years of experience

With over 25 years of experience solving customer needs, you won't find a safer, friendlier name in Home Service. Heating, Ventilation, Air Conditioning. Water Heaters, Clothes Dryers,Gas Furnace, Heat Pumps.

With over 25 years of experience solving customer needs, you won't find a safer, friendlier name in Home Service. Heating, Ventilation, Air Conditioning. Water Heaters, Clothes Dryers,Gas Furnace, Heat Pumps.

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Heating and Air Conditioning questions, answered by experts

If you know how to identify supply and return ducts, you’ll find that only the supply ducts will have dampers. Although your return ducts can have dampers, it’s not common. If you have one return duct that is pulling in too much air, adding a damper to it can help with overall system performance. However, dampers on return ducts are not a necessary addition for most homes.

If the air coming from your AC unit is cool but never quite cold, there are a few reasons this might be happening. For starters, it could signal that your refrigerant levels are low. If there are no other indications of this particular issue, like hissing noises or frozen refrigerant lines, anything from dirty filters to damaged condenser or evaporator coils could be responsible for the problem.

Evaporator coils last between 10 and 15 years before they need to be replaced—as long as you stay up-to-date with routine maintenance. This is roughly the same life span as most AC units. So, if you have an older air conditioner and the evaporator coil goes out, it might be more cost-effective to replace the whole unit rather than just the coil.

Replacing an evaporator coil costs around $1,350 on average. The coil itself, depending on the size and brand, can cost from $550 to $1,100. Professional labor averages about $700 total. Note that a license is required to work with refrigerants, so it’s necessary to have an AC pro complete this task.

There are ways to detect a refrigerant leak with several different testing methods. However, most homeowners can figure out something’s wrong with their AC unit by noticing these common signs:

  • Ice forming on the evaporator coil

  • Water leaks near the AC unit

  • Frequent hissing sounds

  • Increased electric bills

  • Unit takes longer than usual to cool

  • Unit is blowing hot air

The Littleton, 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.

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