Top 3 HVAC Contractors in Longmont

Compare the highest-rated hvac professionals in Longmont, Colorado. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Summit Climate Control

4.8
(142 reviews)
Verified

A leading full-service HVAC contractor specializing in high-efficiency heating and cooling systems tailored for Longmont's high-altitude climate. They are a Lennox Premier Dealer and Carrier Factory Authorized Dealer, offering top-tier equipment with advanced humidity control for dry winters and efficient cooling for hot summers. Their team is NATE-certified and specializes in complex ductwork design for older homes common in the area.

1850 Mountain View Ave, Longmont, CO 80501

Specialties & Features

High-Altitude HVAC Expertise
Energy Efficiency Upgrades
24/7 Emergency Service
Ductwork Design & Sealing

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
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#2

Front Range Furnace & Air

4.6
(118 reviews)
Verified

A family-owned and operated HVAC company with deep roots in the Longmont community. They are highly regarded for their expertise in furnace repair and installation, a critical service for the region's cold winters. They are EPA-certified for refrigerant handling and offer comprehensive maintenance plans to ensure system longevity and peak performance throughout the seasonal extremes.

321 Main St, Longmont, CO 80501

Specialties & Features

Furnace Repair & Installation
Priority Maintenance Plans
Honest Diagnostics
Local & Family-Owned

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
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#3

Eco-Temp HVAC Solutions

4.5
(96 reviews)
Verified

Specializes in modern, energy-efficient HVAC solutions and smart home integration for Longmont homeowners. They are experts in heat pump installation, which is increasingly popular for Colorado's swing seasons, and are certified to perform energy audits and recommend system upgrades for maximum efficiency and rebate eligibility. Their technicians are highly trained on Wi-Fi-enabled thermostats and zoning systems.

5505 Weld County Rd, Longmont, CO 80504

Specialties & Features

Energy Efficiency Audits
Heat Pump Systems
Smart Thermostat Integration
Eco-Friendly Refrigerants

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
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Why These Are the Top HVAC Contractors in Longmont

The Longmont HVAC market is characterized by high demand for robust and efficient systems due to a semi-arid, high-altitude climate with cold, dry winters (avg lows in the teens) and hot, sunny summers (avg highs near 90°F). This creates year-round service needs, with peak demand for furnace services in fall/winter and AC installation/repair in spring/summer. Reputable local contractors emphasize energy efficiency, proper sizing for altitude, and expertise in both new construction and servicing older homes with challenging ductwork. The market is competitive with a mix of long-established local companies and newer, tech-focused providers.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Longmont regulations and climate