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5 Best AC Repair Services in Longmont, CO

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Written By Max Peterson | Last Updated: February 05, 2024

When the need arises for air conditioner (AC) repairs in Longmont, CO, residents take pride in options that prioritize their local environment, and many of them will emphasize energy efficiency when they can. Begin your AC repair company search with these respected Longmont providers, and learn more about replacing your AC and future-proofing your home with this useful guide.

Top AC Repair Companies in Longmont, CO

Blue Valley Heating & Cooling Logo

Blue Valley Heating & Cooling

Based on 436 customer reviews.

Services Offered

Maintenance Ventilation Emergency Services Boiler Installation Ac Installation Ductless Furnace Installation Boiler Repair Ac Repair Furnace Repair


  • Prompt service delivery
  • Informative resources
  • Reliable customer support
1740 Skyway Dr Unit H, Longmont, CO 303-993-2645 bluevalleyheatingcooling.com
D.N.I. Heating-Cooling-Refrigeration-Plumbing Logo

D.N.I. Heating-Cooling-Refrigeration-Plumbing

Based on 359 customer reviews.

Services Offered

Maintenance Indoor Air Quality Ac Repair Filtration Emergency Services Inspection Smart Home Integration Ductless Ac Installation Radiant Heating Furnace Installation Furnace Repair Boiler Installation


  • Free quote
  • Clear pricing policy
  • Reliable customer support
14196 Co Rd 7, Mead, CO 720-868-5291 dniheating.com
Tri County Heating & Cooling Logo

Tri County Heating & Cooling

Based on 30 customer reviews.

Services Offered

Maintenance Ac Installation Furnace Installation Ac Repair Ductless Emergency Services Furnace Repair


  • Informative resources
  • Clear pricing policy
5222 W County Rd 6, Berthoud, CO 970-670-0016 tricountyheatingcooling.com
Colorado's Finest Heating and Air Conditioning Logo

Colorado's Finest Heating and Air Conditioning

Based on 122 customer reviews.

Services Offered

Inspection Ductless Boiler Installation Ac Repair Smart Home Integration Emergency Services Indoor Air Quality Maintenance Ac Installation Duct Cleaning Furnace Installation


  • Free quote
  • Informative resources
  • Prompt service delivery
1524 Collyer St, Longmont, CO 720-378-1135 coloradosfinestheating.com

More Local Hvac Companies

Stone Heating & Air

User Reviews: 4.6/5 

16792 Weld CoRd 1
Longmont, CO 80504

Innovations Mechanical LLC

User Reviews: 4.5/5 

1446 Hover St Office #201
Longmont, CO 80501

Highland Heating & Air, Inc.

User Reviews: 4.5/5 

14286 Mead St
Longmont, CO 80504

Circulating Air Inc

User Reviews: 4.5/5 

500 9th Ave #12
Longmont, CO 80501

IQ Heating & Air Conditioning

User Reviews: 4.7/5 

300 Wark Ave
Berthoud, CO 80513

SAC Mechanical Heating & Air Conditioning

User Reviews: 4.3/5 

105 S Sunset St A
Longmont, CO 80501

Air Mechanical Inc

User Reviews: 4.3/5 

2700 S Main St UNIT B
Erie, CO 80516

IMS Heating & Air, Inc.

User Reviews: 5/5 

5213 Longs Peak Rd A
Berthoud, CO 80513

MGI Mechanical Services

User Reviews: 4.6/5 

266 Basher Dr UNIT 1
Berthoud, CO 80513

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Longmont
Average Max Temp Percentile: 50.0%
August Average Max Temp: 83.2°F
Climate Zone: Cold
Average Energy Cost: $0.11/kWh
Median Year Houses Built: 1989
Average Heat Waves per Year: 0.0

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Common Types of Air Conditioners

HVAC technicians have the expertise to service most air conditioner types, but knowing more about what you have can be beneficial. Below, we'll explain each of the common AC systems.

  • Window-mounted ACs: Window air conditioners are a popular choice for Longmont condos, townhomes, and apartments. These compact, affordable units are designed for cooling small spaces and single rooms, and they fit snugly in a window frame or dedicated wall slot. Many window-mounted AC users deploy their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Portable air conditioners: As the name suggests, portable ACs don't require permanent installation or ductwork. Instead, they remove hot air through an exhaust hose connected to a window or nearby vent. They're preferred for condos, apartments, or individual rooms.
  • Ductless mini-split: Ductless mini-splits have an outdoor unit and one or more indoor units, with no ductwork required. They offer individual room temperature control, flexible installation options, and higher energy efficiency.
  • Split ACs: Split ACs have two main elements: one indoors and one outdoors. They provide silent operation, improved energy efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Central AC: These are the most common residential AC systems, offering consistent, precise temperature control. They feature a central unit that cools air from outside, purifies it, and sends it through ducts to different rooms in your home.

How to Choose Your Longmont AC Repair Service

You likely want a quick solution for your air conditioner's problem. However, before hiring a repair company, it's important to take the time to research if they're ideal for your dwelling. Here are a few essential steps to follow.

Confirm the Company Is Properly Licensed and Insured

Colorado licenses plumbers and electricians at the state level, but not HVAC contractors. Counties and cities are free to issue their own licenses, and we encourage you to contact your local government for more information.

You should also verify a company has sufficient liability coverage, even if your state doesn't require it. Choosing an insured company will protect you if accidents happen during work.

Read Customer Reviews

Find customer reviews on the Better Business Bureau (BBB) website for each company you're interested in. The BBB accredits businesses that respond to complaints effectively and honor their warranties.

It's common for even the best AC repair companies to have both positive and negative reviews. Read each one carefully, and avoid a provider if most reviewers had subpar experiences.

Compare Estimates

We advise getting at least three different estimates to find the best value. Get a written copy of each quote, and learn more about permitting fees, manufacturer warranties, installer guarantees and emergency repair availability.

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Frequently Asked Questions About AC Repair in Longmont

What's the cost of an AC repair job in Longmont?

Your AC repair costs will hinge on your system's make and model and the malfunctioning part. A basic repair job like sorting out a thermostat might cost $150–$250, whereas a more intricate fix like swapping out the compressor will be more expensive.

See the average costs for common AC repairs below.

Common RepairAverage Cost
Clogged air filter$66–$176
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,318–$3,955
Fan or air blower issues$150–$200
Compressor replacement$600–$1,670

Why should I hire an HVAC professional? Couldn't I repair my air conditioner myself?

Yes, it's better to get a new air conditioner professionally installed. Most units use intricate piping and wiring that could stump even an experienced do-it-yourselfer. They also use chemical coolants that could pose serious safety risks if they spill or leak. With their training and equipment, the right technician will set you up for success.

How many years until I should replace my AC unit?

You won’t need to replace air conditioner for 10–15 years with proper maintenance. As your AC ages, its mechanical parts might become unavailable. You'll probably need to consider new AC installation if your company can't replace a broken part.

Should my HVAC company have a private accreditation?

Private accreditations aren't always necessary, but firms that seek them are typically more trustworthy. The two largest HVAC trade bodies that issue certifications are the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and Air Conditioning Contractors of America (ACCA).

My HVAC problem is urgent. How quickly could a company respond?

The response time can vary by company, but HVAC companies strive to handle emergency repair requests as quickly as possible. Some companies offer same-day or next-day service for these issues. While a specific timeframe might be listed in your contract, contacting the company directly is best so you can get the most accurate information.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.