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Find Central a/c service or repairers in Longmont

Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
5.0(
74
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Quality service and HVAC at a very affordable price! I couldn’t ask for more. I would highly recommend Behold for anyone needing HVAC repairs or replacement."
Mini Split Install
A nice, new, clean Boiler - restoring heat right in time for the evening!
Glad we were able to restore heat same day for this customer. Replaced Furnace and A/C for proper installation, air flow and 10 year warranty on FULL SYSTEM.
Glad we were able to restore heat same day. Full Boiler replacement, repipe and zone valves.
Mini Split Install

+67

12 neighbors recently requested a quote
Recommended by47%of homeowners
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Avatar for AAA Service Plumbing, Heating & Electric
AAA Service Plumbing, Heating & Electric
4.4(
466
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 1983

Free estimates

Credit card accepted

"I like that they sent me text messages with the service person's photo and arrival time. I also got phone calls from the main office alerting me that their service person was on the way to my house. Arrived on time. Service people were friendly and professional. This was a messy repair and they cleaned up and removed everything before leaving."
My jobs
My jobs
My jobs
My jobs
Recommended by94%of homeowners
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Avatar for Mountain Pro HVAC Services, LLC
Mountain Pro HVAC Services, LLC
5.0(
126
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Excellent service. Adrian was extremely professional and did an amazing job. He came to fix our air conditioner with in hours. We would definitely recommend Mountain pro"
Maintenance Services
Maintenance Services
Maintenance Services
Maintenance Services
New AC / Furnace Install

+4

Response time11 hrs
Response rate92%
Recommended by100%of homeowners
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Avatar for M & H Air, LLC
M & H Air, LLC
5.0(
18
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"Ramiro was on time and was able to compete service repair on all 5 units. He provided a complete detail of each unit and something that was gonna need to be fixed which we were able to get scheduled and completed the repair. I look forward to having him back for our next inspection."
M & H Air, LLC
Victory Outreach Church
3 neighbors recently requested a quote
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Avatar for Colorado Mechanical Services & Repairs
Colorado Mechanical Services & Repairs
4.6(
96
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Colorado mechanical came out and we couldn?t be more pleased they were amazing fixed our problem in less than 2 hours there pricing was reasonable and the even cleaned there mess up at the end I would recommend anyone to Colorado mechanical service and repair that needs any ac or furnace work done"
Response time4 hrs
Response rate99%
22 neighbors recently requested a quote
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Avatar for One Hour Heating & Air Conditioning - Loveland
One Hour Heating & Air Conditioning - Loveland
4.7(
207
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1978

Free estimates

Emergency services offered

"Best explanation of what needed to be done without central air, furnace, and hot water heater Gregory was very knowledgeable about the project and how it would occur, heâ s very knowledgeable and polite !"
49 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Absolute 1st Choice Heating & Air Conditioning Inc.
Absolute 1st Choice Heating & Air Conditioning Inc.
4.5(
122
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Excellent service and took time to explain issues."
Response time8 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for TNT Home Services
TNT Home Services
4.7(
144
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"These guys were great! Excellent service, friendly workers and professional all the way through. I truly believe that the fact that this company is veteran owned sets the standard for all employees. I would hire them for any of my plumbing or HVAC needs. If they did work but an issue arises after they complete the job, no problem. Theyâ ll be there that same day to fix it. They explained everything they were doing and answered all questions I had."
Home Repipe
Home Repipe
Water Heater
Water Heater
AC System Installation

+1

Response time1 day
Recommended by99%of homeowners
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Avatar for Steven & Sons Heating and Cooling
Steven & Sons Heating and Cooling
4.7(
118
)
Central A/C - Service or Repair

Serving Longmont, CO and surrounding areas

Approved

In business since 2015

Emergency services offered

Warranties offered

"Arrived on time, had the part to make the Saturday late afternoon repair. Detailed and professional."
Steven Brazing one of our larger projects
Brazing
Mariano Brazing
Furnace Loaded and ready for delivery
Cutting

+47

Response time4 hrs
Response rate93%
6 neighbors recently requested a quote
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Showing 1-10 of 222
FAQs for central a/c service or repair projects in Longmont, CO

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Longmont, CO homeowners’ guide to central a/c service or repairs

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

See all articles