19 AC Replacement Contractors in Westminster, CO
Top-Rated AC Replacement Contractors in Westminster
Elite Rooter Plumbers
“Three of four detailed reviews mention specific technicians by name, with positive experiences credited to Isaiah and David. The single 1-star review documents…”
One Hour Heating & Air Conditioning® of Denver
“Reviews frequently mention rapid same-day response and respectful home care, with Cameron, Mateo, Tyler, and Ivan cited by name for prompt arrival and thorough…”
All AC Replacement Contractors (19 total)
Sanchez Mechanical
“All reviews are 5-star ratings with an average of 4.8 across 292 total reviews. Multiple reviewers credit Sid…”
L&M HVAC & Mechanical
“All five reviewers award 5 stars while specifically naming Mike, Lee, or Darian. Four of five customers…”
Blue Horse Heat and AC
“All five featured reviews award five stars, with property managers specifically endorsing Blue Horse for…”
Afford A Rooter Plumbing
“All three featured reviews award 5 stars, with customers praising same-day response times, transparent…”
Thin Air Heating and Cooling Repair
“All five visible reviews award 5 stars, with four explicitly praising Donald by name and his response speed.…”
Colorado Eco-Mechanical
“Fifty-seven reviews produce a 4.8-star average, with every published rating at 5 stars. Customers frequently…”
Comfort Masters Heating & Cooling
“All three reviewers name the technician who helped them: Micah, Tristan and Jeffery, and Craig. Two of three…”
MTech Mechanical
“Of 7 detailed reviews, 5 awarded perfect 5-star ratings, with specific technician names appearing in each…”
K&K Home Solutions
“All five-star reviews praise Paul by name for honesty and fair pricing, with three of five citing same-day or…”
Unity Commercial HVAC & Roofing
“All 11 reviews award perfect 5-star ratings, with 7 reviewers specifically naming the technician who served…”
Northern Horizon Heating and Air
“All six reviews award five stars, with three customers specifically naming the technicians who served them:…”
Longmonts Heating and Air Conditioning
“All three reviewers gave five stars, yielding a 5.00 average with zero deviation. , Noha, and William each…”
Northern Climate Control
“Both reviewers awarded five stars and explicitly named their technician, Mike, as a key factor in their…”
Energy Services of Colorado - ESCO
“The single reviewer awarded five stars and specifically praised three named technicians for their expertise…”
Kowalsky Mechanical
“One of two reviewers describes a deposit dispute involving $2500 retained for a $20 part with no refund or…”
AC Replacement Costs in Westminster
Replacement costs for aging systems in Westminster. If repair cost exceeds 50% of replacement, replacement is usually more economical.
| Service | Low | Average | High |
|---|---|---|---|
Central AC (3-ton, basic) | $6,160 | $8,960 | $12,320 |
Central AC (4-ton, mid-efficiency) | $8,400 | $11,760 | $15,680 |
Central AC (5-ton, high-efficiency) | $10,640 | $14,000 | $17,920 |
Full HVAC system (AC + furnace) | $12,981 | $15,042 | $15,792 |
Plus ductwork replacement If existing ducts are aged/leaking | $2,352 | $3,360 | $4,480 |
| Repair cost threshold | 50% rule: if repair > 50% of replacement, replace | ||
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
AC Replacement in Westminster, CO: What to Expect
Westminster sits in the Denver metro area at 5,280 feet elevation, where summer temperatures routinely reach 88 F and winter lows drop to around 18 F. The semi-arid continental climate creates genuine demand for reliable cooling during brief but intense heat waves, and thinner air at this altitude reduces air conditioning efficiency by roughly ten to fifteen percent, meaning systems often need to be sized beyond their nameplate ratings to perform adequately. Homeowners searching for AC Replacement in Westminster will find seventeen licensed contractors serving the area, collectively earning an average rating of 4.8 based on nearly seven thousand customer reviews.
Cost considerations depend heavily on system specifications. A standard 3-ton central air conditioning unit ranges from $6160 to $12320, while a 4-ton mid-efficiency system runs $8400 to $15680, and high-efficiency 5-ton units reach $10640 to $17920. These price differences reflect variations in SEER ratings, compressor technology, and whether ductwork modifications are required. Colorado maintains no statewide HVAC license, so contractors operate under local licensing requirements that vary by municipality and must comply with Westminster building codes.
Customer feedback reveals distinct approaches among top-rated contractors. One Hour Heating & Air Conditioning earns consistent praise for rapid same-day responses, with reviewers naming Cameron, Mateo, Tyler, and Ivan for arriving promptly and treating homes with respect. Big Apple Plumbing LLC stands out through Jason, whom multiple five-star reviewers credit with taking time to explain system mechanics to homeowners. Elite Rooter Plumbers generates mixed sentiment, Isaiah and David draw strong positive mentions for their technical skill, though a minority of reviewers note recurring issues that remained unresolved.
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All HVAC Contractors in Westminster, CO
Complete directory of 60 contractors — browse alphabetically
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All HVAC Contractors in Westminster, CO
Complete directory of 60 contractors — browse alphabetically