12 Vetted Heat Pump Installation Companies in Longmont, CO.
How Heat Pump Installation patterns are shifting in Longmont, Colorado
Demand for best heat pump installation companies in Longmont, CO rises as higher-altitude summers and subfreezing winters strain older furnaces and air conditioners. Homeowners often schedule installs in shoulder seasons to avoid winter service delays and to capture efficiency rebates during milder months.
Compare top Heat Pump Installation providers in Longmont
| # | Provider | Score | Years | |
|---|---|---|---|---|
| 1 | WWelzig Heating, Air, Plumbing & Electric | 85 | 4.9 (1,445+) | 32+ |
Editorial: Heat pump installations for ducted air-source systems are listed on Welzig's service pages. NATE-certified technicians are listed among their credentials. Welzig reports 30+ years serving Boulder County homeowners since 1994. Longmont's seasonal cold winters and warm summers make correct heat pump sizing important. Online mentions note same-day and emergency response availability. Strengths:
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| 2 | MM and M Heating, Cooling, Plumbing and Electrical | 84 | 4.9 (3,520+) | |
Editorial: M and M leads with specialist furnace repair work and diagnostics in Longmont. The company states it employs NATE-certified technicians. Emergency Response is advertised as 24/7 with same-day availability. The loyalty membership lists scheduled maintenance reminders and tune-ups. Front Range winters make prompt no-heat response important for Longmont homeowners. Strengths:
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| 3 | BBlue Valley Heating & Cooling | 82 | 4.8 (1,280+) | |
Editorial: Blue Valley focuses on AC repair and installs, including ductless mini-split systems. Blue Valley states 30+ years in the field. Longmont's high-altitude cooling loads influence their equipment choices and sizing. The company advertises emergency service (24/7) for no-heat or no-cool calls. Local reviewers describe clear diagnostics and multiple plan options. Strengths:
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| 4 | MMy Guy Heating and Air (Firestone) | 82 | 4.9 (1,110+) | |
Editorial: My Guy Heating and Air (Firestone) lists ducted air-source heat pump installations. The company states financing is available for larger projects. My Guy is accredited by the BBB with an A rating. Longmont's cold Front Range winters make proper heat-pump sizing important locally. Their Google review volume suggests frequent customer interactions. Strengths:
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| 5 | MMountain Valley Plumbing and Heating | 81 | 4.9 (875+) | 19+ |
Editorial: Mountain Valley lists ducted heat pump installs and cold-climate Hyper-Heat work. The company reports filing Xcel rebate paperwork for qualifying installs. Mountain Valley notes flat-rate pricing quoted before work begins. Mountain Valley trains background-checked technicians who use shoe covers and follow a Safe Clean Home routine. Their Longmont HQ supports Front Range drives across Northern Colorado. Strengths:
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| 6 | TTNT Home Services - Longmont | 78 | 4.8 (860+) | 10+ |
Editorial: Cold-climate heat pump installation is listed as a specialty on their site. GoodFellas notes a company history stretching back 10+ years. Longmont winters and Front Range temperature swings make right-sized heat pumps important locally. Customer reviews highlight punctuality and clear pricing during service visits. Strengths:
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| 7 | CColorado's Finest Heating and Air Conditioning | 77 | 4.9 (235+) | |
Editorial: Furnace repair work leads their website, with diagnostic services advertised for all furnace brands. Jordan's team states NATE-certified technicians handle gas and combustion issues. The company notes 24/7 emergency response and same-day service availability. Local winters in Longmont make quick no-heat response essential during freezes. Review excerpts show same-day fixes and clear explanations of needed repairs. Strengths:
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| 8 | GGroulx Mechanical Heating & Cooling Inc. | 76 | 5.0 (265+) | |
Editorial: Heat pump installation specialization is highlighted on Groulx Mechanical’s site. The company notes family-owned operations and local leadership. Groulx Mechanical advertises financing options for larger installs. Xcel-registered contracting is listed, relevant for Longmont rebate programs and utility coordination. Strengths:
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| 9 | LLongmont Water Heaters | 76 | 5.0 (210+) | |
Editorial: Longmont Water Heaters advertises a text-photo quoting process for rapid estimates. Longmont Water Heaters lists same- and next-day service availability for like-for-like swaps. Longmont's cold winters increase hot-water demand during freezing months. Google reviews emphasize punctuality and clear communication after service visits. Strengths:
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| 10 | CColorado Green Plumbing, Heating and Cooling | 72 | 4.9 (150+) | 46+ |
Editorial: Colorado Green lists furnace replacement and HVAC installations with same-day replacement availability. Strengths:
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| 11 | FFlatirons Heating and Air | 70 | 5.0 (130+) | |
Editorial: Flatirons Heating and Air is based in Longmont, Colorado. The company lists a public website for customer reference. Their business location is 1136 Kimbark St Unit a in Longmont. Longmont's high-altitude, cold winters often increase indoor dryness and filtration needs. Local reviewers have contributed a substantial number of Google opinions. Strengths:
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| 12 | JJim Needham Heating Cooling Plumbing and Drain | 70 | 4.9 (105+) | |
Editorial: Jim Needham lists central AC installation and condenser swaps on its service pages. The company notes over 100+ years of combined experience. Jim Needham advertises financing and instant online estimates. Denver's high-altitude summers and dry winters affect cooling loads in Thornton. Strengths:
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Typical Heat Pump Installation costs in Longmont, CO (2026)
Last updated
Estimated ranges for Longmont, CO. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Ducted air-source heat pump + air handler, full system (installed) | $8,300–$16,650 |
| Premium variable-speed / inverter system (installed) | $15,600–$26,000 |
| Cold-climate (hyper-heat) premium (over standard air-source) | $1,550–$4,150 |
| Air handler replacement (paired with heat pump) | $1,550–$3,650 |
| Ductwork modification (resize / re-balance per Manual D) | $625–$2,300 |
| Geothermal (ground-source) system — premium alternative (installed) | $15,600–$36,400 |
| Geothermal loop field — drilling/trenching (per ft installed) | $10–$35 |
Nearby Colorado heat pump installation pricing: Arvada · Aurora · Boulder
See broader context: Heat Pump Installation pricing in Colorado · Heat Pump Installation pricing nationwide
How were Longmont Heat Pump Installation contractors evaluated for reviews, uptime, and warranty?
This guide evaluated 12 Longmont heat pump installation providers on Google review counts, advertised emergency responsiveness, certifications, and stated warranty or satisfaction guarantees. Primary signals were Google Maps ratings and provider-published service claims such as 24/7 response, flat-rate pricing, and financing options.
- M and M Heating, Cooling, Plumbing and Electrical lists NATE certification and 24/7 emergency response, per their published profile.
- Welzig Heating, Air, Plumbing & Electric states free estimates, financing, and 24/7 emergency service on its website.
- Mountain Valley Plumbing and Heating lists flat-rate pricing and same-day emergency response for heat pump work.
- Colorado Green Plumbing, Heating and Cooling notes a satisfaction guarantee and 45+ years in business on its profile.
- Google Maps data shows a high aggregate score: total providers averaged 4.89/5.0 across 9,710+ reviews.
Compare each provider's Google Maps rating and the provider-published service terms, and check third-party records such as BBB entries before hiring.
How do I choose a Heat Pump Installation Company in Longmont?
- Verify licensing and certifications with the state licensing board.
- Compare Google Maps ratings and review counts across providers.
- Confirm emergency response windows and any advertised warranties.
- Request written estimates and financing terms from at least three providers.
- Check BBB records and provider websites for complaint history and guarantees.
5 heat-pump issues Longmont homeowners see when cold snaps or summer swings hit
The most common heat pump problems in Longmont are icing, reduced capacity, and premature cycling caused by high-altitude temperature swings and frequent cold snaps. Homeowners searching for affordable heat pump installation services longmont co should expect these climate-driven issues and plan for cold-weather diagnostics and high-altitude equipment tuning.
- Icing and defrost failure. Subfreezing nights in Longmont cause persistent ice buildup on outdoor coils, and failed defrost cycles stop heat delivery during cold snaps.
- Reduced heat output at altitude. High-altitude air in Longmont lowers heat transfer efficiency, so heat pumps often struggle to reach set temperatures on frigid mornings.
- Short cycling from thermal stress. Rapid day–night temperature swings in Longmont cause frequent on/off cycles that strain compressors and shorten component life.
- Refrigerant leaks worsened by freeze-thaw. Repeated freeze-thaw in Longmont expands and contracts piping joints, increasing the chance of slow refrigerant leaks and loss of capacity.
- Controls and sensor drift. Wide seasonal temperature swings in Longmont can make thermostats and defrost sensors drift out of calibration, producing incorrect cycling or missed defrosts.
What Longmont’s population size and seasonal patterns mean for Heat Pump Installation timing
Longmont's high-altitude winters and large seasonal swings drive demand for timely installs before cold snaps hit. Homeowners searching for the best heat pump installation companies in Longmont, CO should schedule installs in late summer or early fall to avoid winter backlogs and cold-weather tune-ups.
Longmont's elevation and cold winters are the dominant local condition driving heat pump needs.
High-altitude air reduces heat transfer efficiency and raises the chance of icing on outdoor units.
Because of those effects, many evaluated providers emphasize variable-speed inverter equipment and cold-climate tuning.
SEER2 and equipment rules also affect timing; installers must plan for permit checks and equipment that meets North DOE minimums.
Look for contractors with NATE certification and emergency service availability, which speeds diagnostics during sudden cold snaps.
What Longmont homeowners ask about Heat Pump Installation — answers from local data
- How do I get a quote from these heat pump installation companies?
- Submit one request on this page and we send it to the vetted heat pump installation pros in Longmont, CO listed here. They send quotes back — no obligation.
- How much does heat pump installation service cost in Longmont, CO?
- Ducted air-source heat pump + air handler, full system typically runs $8,300–$16,650, and geothermal system — premium alternative runs $15,600–$36,400 in Longmont, Colorado. See the Heat Pump Installation pricing table on this page for the full per-service breakdown.
- Is a city-issued HVAC license required in Longmont?
- No statewide HVAC license exists in Colorado; Longmont and other local jurisdictions set licensing and permit rules. Homeowners should confirm the installer's local credentials and any city permits before hiring.
- Do Longmont heat pump installs need to meet the North DOE SEER2 minimums?
- Yes. Residential central air-conditioning and related equipment must comply with the North DOE minimums, including the 13.4 SEER2 threshold where applicable. Ask installers how proposed equipment meets current SEER2 rules.
- How do I find a cold-climate heat pump specialist in Longmont?
- Look for installers who advertise cold-climate experience, variable-speed inverter systems, and cold-weather tuning. Also check for technician certifications like NATE and written warranties (advertised) and ask about experience with high-altitude performance.
- When should a Longmont homeowner consider full heat pump replacement rather than repair?
- Consider replacement when the unit repeatedly loses capacity during cold snaps, has frequent compressor faults, or when repairs approach the age of typical system life. Request diagnostics and a comparison of repair versus replacement plans from multiple contractors.
- Is a dual-fuel system a good option for Longmont winters?
- Dual-fuel setups can help in extended subfreezing periods by pairing a heat pump with a fossil-fuel backup. Homeowners should evaluate local fuel availability, existing furnace compatibility, and installer experience with dual-fuel controls.
- Are geothermal heat pumps commonly installed in Longmont, and what should I ask about them?
- Geothermal systems are less common but viable. Ask about site suitability, trenching or bore requirements, expected coefficient of performance, and local installers' geothermal project references before proceeding.
- When is the busiest season for Longmont heat pump installers?
- Busiest demand typically rises before and during seasonal shifts into cold weather and late summer to early fall. Schedule installations well before expected cold snaps to avoid slower response and permit delays.
- How do local permits affect scheduling for a Longmont heat pump installation?
- Permits and municipal inspections can add days to project timelines. Because licensing and permitting are handled locally, confirm the installer's permit process and factor inspection windows into the project schedule.