Top 7 HVAC companies in Weld, Colorado

Weld County sits in a heating-dominant climate with large daily temperature swings and very dry air. Equipment must handle winter design temperatures of 3 °F while managing altitude effects on combustion and heat-pump performance. Evaporative cooling remains viable in summer, yet most homes still rely on natural-gas furnaces or dual-fuel systems.

Climate in Weld County

Weld County falls mainly in IECC zone 5B with a dry moisture regime. Heating degree days reach 5,900 while cooling degree days total only 800, producing a heating-leaning mixed load profile. Winter design temperature is 3 °F and summer design temperature is 92 °F. Very low humidity year-round makes humidification common in winter. Natural gas remains the primary heating fuel. Heat pumps require backup or cold-climate models. Central air-conditioning saturation is moderate. Peak service demand occurs in winter. Large diurnal swings and altitude require careful equipment derating during sizing.

The shortlist

De Leon Heating and Air llc

De Leon Heating and Air llc operates from 4429 W 16th Street Rd, Greeley, CO 80634 and lists the phone number (970) 324-4458. Its 115 reviews produced a raw rating of 5.0. The Bayesian adjustment pulled that raw score toward the national mean of 4.764, landing at an adjusted score of 5.011 before tie-breakers. The final ranking score reached 5.011 after credit for a public website and published 24/7 availability. The firm appears as a general contractor. These figures cannot reveal workmanship quality on any single job or the current status of required local permits.

HALO Heating and Air

HALO Heating and Air lists 95 reviews at a raw 5.0 from its address at 623 N Denver Ave, Loveland, CO 80537. The contact number is (970) 469-3545. Adjustment toward the national mean of 4.764 lowered the raw rating to 4.943 before tie-breakers. After website and 24/7 credits the final score stood at 5.003. The listing shows a general-contractor category. Review volume supports stability, yet the numbers give no information on recent technician turnover or specific equipment brands stocked.

Elemental Comfort Systems

Elemental Comfort Systems recorded 73 reviews for a raw rating of 4.9 at 1200 Diamond Cir #G, Lafayette, CO 80026. The phone number is (303) 880-2445. The Bayesian step moved the score from 4.9 down to 4.86 before tie-breakers because the mean sits at 4.764. Final adjusted score reached 4.92 after website and availability credits. The category reads general contractor. The data cannot indicate how the firm handles high-altitude derating on gas equipment.

A to Z Heating & Cooling

A to Z Heating & Cooling holds 23 reviews at a raw 4.9 from 1429 6th Ave, Greeley, CO 80631. Reach the firm at (970) 353-0315. Adjustment toward 4.764 produced a pre-tie-breaker score of 4.823. Website and 24/7 signals lifted the final ranking score to 4.883. The listing category is general contractor. Fewer reviews leave more uncertainty about consistency across seasons compared with firms above 70 reviews.

HVACPros Heating and Cooling

HVACPros Heating and Cooling shows only 3 reviews yet a raw 5.0 at 1013 11th St office 376, Greeley, CO 80631. The listed phone number is (719) 204-9127. The small review count kept the adjusted score close to the national mean of 4.764, resulting in 4.785 before tie-breakers and 4.845 after website and availability credits. Category reads general contractor. Three reviews supply limited evidence of sustained performance.

HVACFirst Heating and Air Conditioning

HVACFirst Heating and Air Conditioning carries a single review at raw 5.0 from 920 47th Ave Unit 531, Greeley, CO 80634. The phone number is (719) 220-1925. With one review the Bayesian adjustment placed the score at 4.772 before tie-breakers and 4.832 afterward. The firm lists as a general contractor with 24/7 availability. One review supplies almost no statistical weight.

Colegate Heating, Inc.

Colegate Heating, Inc. recorded 62 reviews at a raw 4.7 from its Nunn address 111 W 2nd street, Shop, 14440 County Rd 100 7 - Office, Nunn, CO 80648. The phone number is (970) 237-3708. The raw rating sat below the national mean of 4.764, so adjustment lifted it to 4.721 before tie-breakers. Website and 24/7 credits produced a final score of 4.781. Category is general contractor. The lower raw rating reflects fewer perfect scores than the top entries.

How to choose an HVAC contractor

Review depth and adjusted rating form the primary filter. Confirm each firm maintains a public website and states 24/7 availability. Contact the local building department to verify current mechanical-permit rules for the property address. When heat-pump incentives are involved, confirm the contractor holds active Colorado Home Energy Rebates registration before signing any agreement.

Cost of HVAC work

Published typical full-system installation cost stands at $10,350, with a low-to-high range of $9,300–$11,400. Separate 2025 invoiced data shows an average of $17,151 and an upper quartile of $25,373. Labor is listed at $120 per hour. Permit fees range $150–500 depending on jurisdiction. The two cost sources diverge because one reflects advertised package pricing while the other captures actual billed amounts that may include change orders or premium equipment. Altitude derating and dual-fuel configurations can shift final pricing outside either range.

Licensing and permits

Colorado operates without a statewide HVAC contractor licensing board. All licensing and insurance requirements are set by individual city and county building departments. Mechanical permits are likewise issued locally rather than at the state level. Homeowners must contact the department serving the installation address to confirm current license classes, insurance minimums, and permit triggers. The absence of a uniform state standard means rules differ between Weld County municipalities and neighboring jurisdictions.

Incentives

The Colorado Home Energy Rebates program remains active but limited. Registered contractors can deliver up to $8,000 for qualifying heat pumps plus state tax credits of $1,000 for air-source or $2,000 for ground-source units. The credit must be claimed by the contractor, who is required to pass at least 33 percent to the customer as an immediate discount. Utility rebates from Xcel Energy and others range $700–$2,500. Federal 25C and 25D credits expired at the end of 2025. Only contractors registered with the state program can unlock the tax credit; unregistered firms make the incentive unavailable regardless of equipment installed.

Public listing data supplies the ranking inputs but cannot confirm current licensing status, insurance coverage, or workmanship on completed projects. Verify all details directly with the appropriate local building department and the Colorado Energy Office contractor registry before committing funds.