Professionals in

Why These HVAC Professionals?

Our goal is to connect people with the best local experts. We scored hvac professionals on more than 25 variables across five categories, and analysed the results to give you a hand-picked list of the best hvac professionals in Longmont, CO.

ReviewedCuratedTop Picks332513

Our Selection Criteria:

  • 1. Reputation

    A history of delighted customers and outstanding service.

  • 2. Credibility

    Building customer confidence with licensing, accreditations, and awards.

  • 3. Experience

    Masters of their craft, based on years of practical experience and education.

  • 4. Availability

    Consistently approachable and responsive, so customers never feel ignored.

  • 5. Professionalism

    Providing service with honesty, reliability, and respect.

Carroll Mechanical Services

Carroll Mechanical Services handles heating and cooling systems in the area of Longmont and is backed by over 15 years of industry experience. Customers have access to installs and repairs of all brands of furnaces, air conditioners, swamp coolers, boilers, hot water heaters, humidifiers, thermostats, electronic air cleaners, high-efficiency units, and comfort zoning systems. The group also works on air ducts, gas piping, gas leaks, pumps, motors, and controls, and full inspections and tune-ups, and all technicians are professionally trained, licensed, dependable, and friendly as well as willing to answer any questions customers may have. Carroll Mechanical Services is certified by the North American Technician Excellence, offers 24/7 emergency service, and holds an A+ rating with the Better Business Bureau.

Longmont, CO(720) 891-3518


Circulating Air Inc.

Circulating Air Inc. brings 40 years of HVAC experience to clients throughout Longmont. The group specializes in the repair, maintenance, add-on, and replacement of forced air heating units and air conditioners and also installs, thermostats, humidifiers, electronic air cleaners, attic ventilators, and chimney liner kits. Services for residential cooling and heating systems include ductless A/C units and garage heaters, and clients can find useful tips for proper HVAC system maintenance on Circulating Air's site. Customers appreciate reasonable pricing with no charge for travel, honest communication, and dependable service, and the owner had been one of the youngest state licensed heating contractors in California before moving to Colorado. Free second opinions are also available for issues found by a licensed contractor or home inspector.

Longmont, CO(303) 772-7960


Colorado Green Plumbing

Colorado Green Plumbing has been serving the community of Longmont with HVAC installs and repairs for over 35 years. The group provides air conditioning installs, cleaning, and repairs, energy-saving tankless water heaters from Navien and Rinnai, traditional water heaters, and plumbing services including for garbage disposals, water filtration systems, plumbing hardware and fixtures, and plumbing system maintenance as well. Technicians can service sinks, bathtubs, showers, and toilets and also offer free water-saving tips to homeowners. All plumbers at the company are professionally trained and licensed, have been field-tested and capability-tested, and have passed a drug test and a background check. Colorado Green Plumbing offers a 100% satisfaction guarantee along with a warranty on all parts and labor for repairs.

Longmont, CO(303) 772-1318


Colorado's Finest Heating and Air Conditioning

Colorado's Finest Heating and Air Conditioning has been installing and repairing HVAC systems in Longmont for over 15 years. The family owned business provides furnace installs and repairs, air conditioning unit installs and repairs, preventative maintenance, ductless air conditioning, dual fuel heat pump systems, and indoor air quality solutions such as air purifiers and humidifiers. Additional offerings include general plumbing and electrical repairs, toilet replacements, drain cleaning, water heater repairs and installs, electrical wiring, and garbage disposal repairs. Colorado's Finest is approved by the EPA, employs technicians certified by the North American Technician Excellence, and guarantees satisfaction on all of its work. Flexible financing is available as well as free estimates, and the company is also licensed and insured.

Longmont, CO(720) 378-1135


Highland Heating & Air, Inc.

Highland Heating & Air, Inc. brings over 100 years of combined HVAC experience to clients throughout Longmont. The team specializes in residential installs, repairs, and maintenance of heating and air conditioning systems and strives to keep units working as long as possible to avoid costly replacements. Commercial HVAC services are also available, and the group works with property managers and owners, general contractors, stores, facility managers, and industrial facilities as well. Highland Heating & Air employs factory-trained and NATE-certified technicians including a graduate of the Technical Trades Institute, and the owner is NATE-certified, certified by ICC Master Mechanical, and a Rinnai-certified professional as well. Services are available 24/7, customers can also ask about Xcel Energy rebates, and the company holds an A+ rating with the BBB.

Longmont, CO(303) 747-6084


J.D.'s Plumbing

J.D.'s Plumbing brings over 25 years of HVAC experience to the Longmont area. Experienced and dependable crews offer affordable heating and cooling installs, service, repair, maintenance, and 24-hour emergency response to both residential and commercial clients, and all technicians must go through a rigorous hiring and screening process. Services cover high-efficiency heating systems, boilers, air conditioners, evaporative coolers, and new ducting to help keep repair costs and utility bills down, and a range of plumbing services are also available including for installations, repairs, maintenance, and service of toilets, piping, showers, and gas lines. J.D.'s Plumbing enjoys a good amount of its business via referrals from happy customers, and clients can request a free estimate and no-obligation quote as well.

Longmont, CO(720) 491-3644


M and M Heating, Air Conditioning and Plumbing

Meiers Mechanical Inc. has been a Longmont HVAC company for almost 20 years. The family owned and operated business employs NATE-certified technicians who handle heating installs, repair, and service, air conditioner installs, repair, and service, ductless HVAC, commercial HVAC services, water heaters, and indoor air quality solutions. Plumbing services are also available, and Meiers Mechanical prides itself on affordable prices as well as top-quality customer service, enjoys a large amount of business from repeat clients and referrals, and holds an A+ rating with the BBB. The company is also a Carrier Factory Authorized Dealer, received a 2016 Readers' Choice Award from Times-Call, and won an Angie's List Super Service Award three times. Customers can ask about financing options and request 24/7 emergency repairs as well.

Longmont, CO(720) 366-1512


MME Home Services

MME Home Services offers HVAC services in Longmont and is backed by over 20 years of experience in the field. Customers hire the team for fast, affordable, and professional results for heating and cooling repairs, furnace repairs and replacements, system rezoning, boiler installations and repairs, heat pumps and air conditioner units, and service for combination water heater/boiler units. The insured and bonded group also provides 24-7 emergency services and a range of plumbing services as well. Certified and trained technicians offer personalized attention, open communication, and thorough diagnostics/inspections for optimized solutions on every project and make sure clients are aware of the most cost-effective options. The company holds an ICC Master Mechanical License, is certified by the North American Technicians Excellence, and also holds an A- rating with the Better Business Bureau.

Longmont, CO(303) 847-1878


Sam Ainsworth & Company Mechanical Contractors Inc.

Sam Ainsworth & Company Mechanical Contractors Inc. has been installing and repairing HVAC equipment in Longmont since 1982. Residential services cover installs and repairs of heating systems, air conditioners, heat pumps, dual fuel systems, and evaporative cooling systems, and clients also have access to hydronic systems, geothermal units, air distribution, water heaters, controls, and whole-house air filters and humidifiers. Commercial HVAC services cover all basic heating and cooling systems as well as rooftop units, steam boilers, hot water storage systems, commercial controls and water heaters, air distribution, geothermal systems, and IAQ products as well. Energy Saving Agreements are also available for all clients as well as financing through Wells Fargo, and the group carries top-name products from the likes of Trane, Carrier, Lennox, Mitsubishi, Unico, Nest, and Hi-Velocity Systems.

Longmont, CO(303) 825-9483


Stone Heating & Air

Stone Heating & Air brings decades of combined experience to HVAC clients throughout the area of Longmont. The licensed and insured team works on heating and cooling systems to help ensure the highest-possible efficiency for lower energy bills and optimal functioning all year long, and techs handle the install, service, and repairs of air conditioners, heating systems and furnaces, thermostats, boilers, and air handlers. The group caters to both private homeowners as well as business owners with a focus on each client's budget and needs, and interested parties can phone for additional pricing and details. Stone Heating & Air is certified by the North American Technicians Excellence, works with top-name brands such as York and Rheem, and has achieved an A+ rating with the BBB.

Longmont, CO(303) 564-0986


Tri County Heating & Cooling

Tri County Heating & Cooling has been serving the community of Longmont with its heating and cooling needs for over 20 years. Company technicians at the locally owned and operated group can handle the installation and repair of residential HVAC systems along with the service all makes and models of heating and cooling products, and customers benefit from experienced crews and affordable pricing. Additional services include full inspections, cleaning, and maintenance contracts for private homeowners, property management companies, and realtors, and potential clients can also ask about the ClimateSmart Loan Program and available tax credits for high-efficiency systems. Tri County Heating & Cooling is licensed and insured, is certified by the North American Technician Excellence, and offers convenient payment options, financing, and 24/7 emergency service as well.

Longmont, CO(303) 589-4091


Wright Heating & Air Conditioning Inc.

Wright Heating & Air Conditioning Inc. has been handling heating and cooling systems in the Longmont area since 1977. The full-service group provides HVAC services for the installation and repair of everything from residential air conditioners, furnaces, and boilers to commercial rooftop units, geothermal heating, and duct systems and can also offer services for restaurant walk-in coolers, freezers, prep tables, ice machines, and water heating systems. Clients can hire the team as well for full project services including conception, design, project planning, site selection, fabrication, staging, construction, and cleanup, and NATE-certified and licensed contractors work on every job. Wright Heating & Air Conditioning is known for honest and reliable work, uses top-quality equipment and materials, and caters to both new constructions as well as remodels.

Longmont, CO(303) 651-0467


ZMS Mechanical

ZMS Mechanical has been a Longmont HVAC company for almost 20 years. The group is known for fast response times, dependable crews with years of experience, and professional, top-quality results on all types of heating, ventilation, and air conditioning repairs. The team is dedicated to the highest customer satisfaction on every job and is open seven days a week from 8 AM until 5:30 PM for added customer convenience. Clients throughout Longmont and the surrounding areas have come to rely on the company for proper heating and cooling in their home all year long, and interested parties can contact the HVAC contracting company for additional service details as well as prices by phoning or sending a message via an online form right on ZMS Mechanical's site.

Longmont, CO(303) 478-8176


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