HVAC directory

HVAC in Longmont, Colorado

7 HVAC businesses found in Longmont, Colorado.

Circulating Air Inc

4.8

(57)

HVACLongmont, CO

Air conditioning installationAir conditioning repairSeasonal AC maintenanceFurnace installation and replacementFurnace and heating repairSeasonal heating maintenanceThermostat installation and repairWhole home humidifier installation and repairAir purification and filtrationGarage heater installation

Circulating Air Inc is a family owned and operated HVAC company in Longmont that has served the Boulder County area since 1994. Owner and founder Bob Russell started in the heating and air conditioning trade in 1977, ran his own company in Southern California from 1982, and was one of the youngest state licensed heating contractors in California before moving his family to Longmont and opening Circulating Air. Bob and his son Tony run the business today. The company handles residential heating and cooling from installation through repair and seasonal maintenance, including Trane central air conditioners, high efficiency Trane furnaces and heat pumps, thermostats and smart thermostat upgrades, Flow Thru whole home humidifiers, and Modine Hot Dawg heaters for garages and workspaces. Indoor air quality work covers Honeywell filtration and Trane CleanEffects air cleaners, which capture particles as small as 0.1 microns and help with wildfire smoke and seasonal pollen. Technicians are fully licensed, insured and NATE certified, and they work on all makes and models. Pricing is upfront and competitive with no hidden fees, there is no trip charge for coming out to a job, and the company offers a free second opinion for homeowners told they have a heating, cooling or ventilation problem. The office is open Monday through Friday from 8:30 AM to 4:30 PM.

KJ Thomas Mechanical

4.9

(282)

HVACLongmont, CO

Heat pump installationFurnace installation and repairAir conditioning installationDuctless mini-split systemsHVAC maintenance and tune-upsHVAC diagnostics and repairWhole-home humidifiers and air purificationLight commercial HVAC and rooftop unitsPlumbing, water heaters and boilersElectrical panels, wiring and EV circuits

KJ Thomas Mechanical is a family-owned HVAC company based in Longmont, Colorado, serving Boulder County since 1995. Karl Thomas started the company with one truck and still walks jobs today, and decision-making stays in the family rather than with a corporate call center. The crew installs and services heat pumps, high-efficiency gas furnaces, air conditioning, and ductless mini-splits, and also handles seasonal maintenance tune-ups, detailed diagnostics and repair, whole-home humidifiers, and air purification with media filters, UV, and air cleaners. Most installs use high-efficiency Trane equipment, paired with Mitsubishi mini-splits when zoned comfort or a retrofit makes sense. Work covers homes, townhomes, rentals, and additions as well as light commercial spaces such as studios, tenant finishes, boutique retail, small offices, restaurants, and light warehouses, including rooftop unit replacements and ducted zoning. The company also offers residential and light commercial plumbing for water heaters, boilers, fixtures, leaks, and gas lines, plus electrical work covering panels, wiring, lighting, EV circuits, and safety inspections. KJ Thomas Mechanical keeps a Boulder County Mechanical License on file and is fully insured, handles Xcel rebate paperwork and state and federal incentive stacks, and offers Wells Fargo financing for installs with approved credit.

SAC Mechanical Heating & Air Conditioning

4.6

(51)

HVACLongmont, CO

AC repairAC installation and replacementFurnace repairFurnace installation and replacementAC and heating maintenance plansEmergency AC and heater serviceThermostat installationDuctless HVAC installation and replacementIndoor air quality and whole-home air purificationDuct installation, repair and sealing

SAC Mechanical Heating & Air Conditioning is a family-owned and operated HVAC company based in Longmont, Colorado, serving residential and commercial clients since 1982. The team handles air conditioning repair, replacement and installation, furnace repair, replacement and installation, thermostat installation, ductless HVAC installation and replacement, indoor air quality work including humidifiers, dehumidifiers, whole-home air purification and filtration, and duct installation, repair and sealing. SAC Mechanical also covers water heater repair, replacement and tankless systems along with home electrification upgrades. NATE-certified technicians service all brands, and the company works with product lines including Navien, RGF, Lennox, AprilAire and Carrier. Customers can sign up for AC and heating maintenance plans, call 24/7 emergency AC service or emergency heater service, and take advantage of same-day service availability for urgent needs, transparent upfront pricing, flexible financing subject to credit approval, and a 100% satisfaction guarantee.

Colorado's Finest Heating and Air Conditioning

4.9

(242)

HVACLongmont, CO

Heating installation and repairFurnace service and maintenanceAir conditioning installation and repairHeat pumpsBoilersDuctless HVAC and ductworkIndoor air qualityWater heaters and tankless water heatersPlumbing leak repairs and fixturesGas lines

Colorado's Finest Heating and Air Conditioning is a local family-owned full service heating, air conditioning, and plumbing company that has served Longmont and Northeast Colorado since 2011. The team installs, repairs, and maintains all makes and models of furnaces, heat pumps, boilers, and air conditioners, including high-efficiency Champion heating and cooling systems, and also handles ductless HVAC, ductwork, indoor air quality, water heaters and tankless water heaters, leak repairs, plumbing fixtures, and gas lines. Technicians are NATE-certified and EPA-certified, and the company is licensed, bonded, and insured. Rated 4.9 stars on Google across 242 reviews, the company offers 24/7 emergency service for urgent HVAC and plumbing issues, maintenance plans, financing, and a rotating set of coupons on service calls and new system installations.

Blue Valley Heating & Cooling

4.8

(1,292)

HVACLongmont, CO

Air conditioning repairAir conditioning installation and replacementFurnace repair and replacementHeat pump and boiler servicesHVAC maintenanceGeothermal heating and coolingIndoor air quality solutionsCommercial HVACPlumbing repair and installationWater heater repair and installation

Blue Valley Heating & Cooling is an HVAC and plumbing company in Longmont, Colorado, and the site describes it as the preferred heating, cooling, and geothermal contractor in Longmont for over 30 years. The company says its licensed technicians deliver fast, energy-efficient HVAC and plumbing solutions tailored to the property and budget, and that it covers everything from 24/7 emergency AC and furnace repairs to custom geothermal installations. Cooling work includes AC repair, installation and replacement, and maintenance for both residential and commercial systems, and the site says the company repairs all systems as a Rheem and Bosch accredited specialist. Heating work covers furnace repair, replacement, and maintenance plus heat pump and boiler services and commercial heating care. On the plumbing side the site lists emergency plumbing and leak detection, water heater repair and installation, drain cleaning and sewer repair, and fixtures and water treatment. Geothermal is a long-running specialty. The About page says the company expanded into geothermal energy solutions in 2008, and the site states that ground-source systems can reduce year-round heating and cooling energy usage by up to 70%. Indoor air quality solutions include whole-home air purification, whole-house humidifiers, smart thermostats and controls, and comprehensive IAQ assessments. The company also offers a Maintenance Membership that provides scheduled maintenance along with member benefits including priority service and savings, and it lists financing options on the site. Blue Valley holds license CON-09-7128 and lists NATE certification, IGSHPA geothermal certifications, an International Code Council Master Mechanical certification, and memberships in CoGEHPA, the Colorado Green Building Guild, and the Longmont Chamber of Commerce. The site notes an A+ rating from the Better Business Bureau and recognition by Expertise.com as one of the Best HVAC & Furnace Repair Services in Longmont, CO. Brandon Schmidt is President, having taken over after founder Monte Schmidt retired. The company says it serves Boulder, Larimer, and Weld counties, and offers a free consultation and estimate.

M and M Heating, Cooling, Plumbing and Electrical

4.9

(3,583)

HVACLongmont, CO

Air conditioner repair, service and installationHeating repair, service and installationHeat pump installationDuct repair, maintenance and sealingIndoor air qualityDuctless and commercial HVACRadiant floor heating and snow and ice melt systemsWater heaters, tankless water heaters and boilersDrain cleaning and leak repairPanel and electrical service upgrades

M and M Heating, Cooling, Plumbing and Electrical is a family-owned and operated home services company that has served Longmont, Colorado and the surrounding Front Range communities since 1998. The company describes itself as a one-stop shop for residential and commercial customers, covering heating, cooling, indoor air quality, plumbing, electrical, and insulation services under one roof. HVAC work spans air conditioner repair, service and installation, heating repair and installation, heat pumps, duct repair, maintenance and sealing, ductless and commercial systems, radiant floor heating, snow and ice melt systems, and WiFi thermostats. The plumbing side handles water heaters, tankless water heaters, boilers, clogged drains, leak detection, burst pipe repair, and sewer and gas lines, while the electrical department covers panel and service upgrades, wiring and rewiring, EV car charging systems, lighting, ceiling fans, and home safety devices. M and M states that it employs only NATE-certified technicians who are licensed and insured, and its electrical and plumbing departments include a Master Electrician and two Master Plumbers. The company offers 24/7 emergency service 365 days a year, financing options, and a Loyalty Membership Program listed at $21.95 per month. Work is backed by a 100% satisfaction guarantee and the One Year Test Drive, which covers equipment M and M installs for the full first year after installation.

Colorado Green Plumbing, Heating and Cooling

4.9

(154)

PlumbersLongmont, CO

Water heater repair and installationTankless water heatersWater leak repairDrain cleaningToilet repairFaucets and fixturesWhole house water filtrationGarbage disposalsSump pumpsAir conditioning repairFurnace repairHVAC installation

Colorado Green Plumbing, Heating and Cooling is a residential plumbing and HVAC company at 338 Main St Ste 14 in Longmont, Colorado. The company was established in Longmont in 1980 and has been licensed and insured since 1980, and it continues to serve homeowners throughout Longmont and the surrounding Northern Colorado communities. President Paul Lingenfelter sets the tone for the company: customers should expect a knowledgeable professional rather than a salesperson, with a clear explanation of what the technician finds and practical options for the home without unnecessary pressure. Plumbing work covers toilet repair, faucets and fixtures, water leaks, drain cleaning, garbage disposals, sump pumps, whole house water filtration, and water heaters including tankless models. On the heating and cooling side, the team handles air conditioning repair, furnace repair, boilers, HVAC installation, home humidifiers, and solar attic fans. Free estimates are offered on qualifying installation and replacement projects, including HVAC systems, water heaters, water treatment equipment, and leak detection systems, while service calls that require troubleshooting or diagnosis are subject to a diagnostic fee. Financing is available through Wisetack, and the company reports having served more than 24,000 customers in Northern Colorado.

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Frequently asked questions

How many HVAC businesses are listed in Longmont, CO?

DashPages lists 7 HVAC businesses in Longmont, Colorado. You can compare them by services, ratings, and contact details on this page.

How much does HVAC cost in Longmont?

Pricing depends on the size and type of job. The fastest way to get an accurate price is to request a free quote from any HVAC business listed above.

What services do Longmont HVAC businesses offer?

Common services include ac maintenance, air conditioning maintenance, clean ducts & vents, duct cleaning, ductless heating and ac services, and furnace installation. Open a business profile to see its full service list and pricing.

Do these HVAC businesses serve areas near Longmont?

Several also cover nearby Denver, Boulder, Colorado Springs, and Aurora. Open a business profile to see its full service area.

How do I choose a HVAC business in Longmont?

Compare the businesses above by their customer ratings, the services they offer, and how quickly they respond, then request quotes from two or three to compare. Listings marked verified have had their details checked by DashPages.

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Circulating Air Inc

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HVAC business directory in Longmont, CO

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