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242 AC Replacement Contractors in Denver, CO

4.9 avg rating
19,824 total reviews8 offer 24/7 service
Need emergency service? 111 HVAC providers in Denver offer 24/7 availability→
AC Repair(662)HVAC Maintenance(713)AC Installation(456)HVAC Service(745)HVAC Repair(623)Emergency HVAC(361)AC Replacement(242)Commercial HVAC(169)

Top-Rated AC Replacement Contractors in Denver

#1

Tipping Hat Plumbing, Heating & Electric

4.7(7,040 reviews)

“6 of 12 sampled reviewers explicitly mention scheduling speed, with several securing same-day or next-day appointments. Three technicians receive multiple…”

1395 S Platte River Dr, Denver, CO 80223
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#2

Mighty Plumbing Heating Air and Electric LLC.

4.8(4,457 reviews)
24/7 Highly Rated

“All three featured reviewers awarded 5-star ratings, with each naming a specific technician. Common praises include same-day response, fair pricing with…”

4730 Paris St #100, Denver, CO 80239
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#3

Ultimate Heating, Cooling, Plumbing & Electric

4.8(1,245 reviews)
24/7 Highly Rated

“All five named reviewers awarded 5-star ratings, with no lower scores present in the sample. Three customers specifically mention same-day or next-day service…”

4321 Broadway Unit 3, Denver, CO 80216
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All AC Replacement Contractors (242 total)

Comfort Pros Heating and Air Conditioning

5.0(635)
Highly Rated

“All 609 reviewers awarded five stars, a rare achievement in the HVAC industry. Three customers specifically…”

7270 Gilpin Way #220, Denver, CO 80229
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Sanders & Johnson Heating, Cooling and Plumbing

4.8(787)
Highly Rated

“Five-star reviewers consistently mention specific technicians including Zabih, Tyler, Josh, Ian, and Reza,…”

7100 Broadway #7K, Denver, CO 80221
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Great Guys Colorado

4.9(667)
Highly Rated

“Six of eight sampled reviewers mention specific technicians by name and praise their diagnostic skill and…”

Call

Benjamin Franklin Plumbing®

4.8(598)
Highly Rated

“Every reviewer awarded 5 stars, with multiple customers specifically praising same-day service availability,…”

Call

Front Range HVAC

4.7(648)

“Three reviewers each award 5 stars, with 648 total reviews producing a 4.7 average. Technicians Rob Torrence,…”

Call

Prime Plumbing & Heating

4.8(517)
Highly Rated

“435 reviews produce a 4.8-star average, with every satisfied customer emphasizing technician professionalism,…”

7000 Broadway Suite 205, Denver, CO 80221
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Right Away Heating

4.9(324)
24/7 Highly Rated

“Five of eight profiled reviews describe same-day or within-one-hour emergency response, with technicians…”

340 Santa Fe Dr, Denver, CO 80223
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Roots Heating & Air

5.0(287)
24/7 Highly Rated

“Every reviewer awarded 5 stars, with six clients specifically naming Sean, Kelly, or Shayne and describing…”

840 Santa Fe Dr, Denver, CO 80204
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Mr. Perfect Plumbing

5.0(215)
Highly Rated

“All 215 reviews award 5 stars, with customers frequently naming individual technicians including Jeremy,…”

Call

AC INC. Roofing | Denver's Trusted Roof Experts

5.0(173)
Highly Rated
6145 Broadway Suite 25, Denver, CO 80216
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Top Tier Heating & Cooling

5.0(171)
Highly Rated

“All 161 reviews award five stars, establishing perfect client satisfaction. Technicians Tyler and Chase…”

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Day & Night Mechanical Solutions, Inc.

4.6(251)

“Every reviewer awarded 5 stars, with 239 customers praising same-day response times, transparent pricing, and…”

3270 W Alameda Ave, Denver, CO 80219
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Premier Mechanical

5.0(159)
Highly Rated

“All 159 reviewers awarded 5 stars, with customers consistently praising owner Jared Carlson's diagnostic…”

Call

First String Heating

5.0(158)
Highly Rated

“All 157 reviews carry 5-star ratings. Reviewers repeatedly mention transparent pricing that held firm from…”

Call

Advanced Hydronics, Inc.

4.9(170)
Highly Rated

“170 reviews yield a 4.9 average rating with all reviewers awarding 5 stars. Multiple clients reference the…”

1426 W Maple Ave, Denver, CO 80223
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DALCO Heating & Air Conditioning

4.6(217)

“Among 203 reviews, customers frequently mention same-day and next-day appointment availability. Technicians…”

4610 S Ulster St Suite #150, Denver, CO 80237
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Rocky Mountain Heating & Air

5.0(135)
Highly Rated

“All seven reviewers gave 5-star ratings, with three specifically naming technicians Jaxon and Jacob. Four…”

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Quality West Heating & Cooling

4.8(150)
Highly Rated

“All three sampled reviews award five stars, with two explicitly naming the technician Rob for his…”

1154 S Lipan St, Denver, CO 80223
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Smart Lion Heating & Cooling

4.9(111)
Highly Rated

“111 reviewers have awarded Smart Lion a 4.9-star average, indicating exceptionally strong client…”

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Brown Brothers Plumbing & HVAC

4.9(110)
24/7 Highly Rated

“All 110 reviewers awarded 5-star ratings, with customers specifically mentioning Brayden and Tracy by name…”

5142 W Dartmouth Ave, Denver, CO 80236
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One call Home Service Colorado LLC

5.0(98)

“Ninety-six reviewers award a perfect 5-star rating, with customers specifically noting responsive same-day…”

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S&S Construction and Home Repairs

5.0(92)

“All 8 displayed reviewers award 5 stars, with 4 specifically noting same-day or 24-hour response…”

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Sure Fire HVAC Denver

5.0(90)

“All seventy-three reviewers award five stars, with Tahn specifically named in the majority of published…”

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Walker Brothers Plumbing & HVAC

4.9(91)
24/7

“All 90 reviewers awarded 5star ratings, with no lower scores recorded. Multiple reviews explicitly reference…”

8557 W Belleview Ave, Denver, CO 80123
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ThermaCare HVAC Service

4.9(87)
24/7

“All 70 reviews award 5 stars, with technicians Preston, Bryson, and Trenton named across multiple accounts.…”

2250 Kearney St, Denver, CO 80207
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ComfortFlow HVAC Service

4.9(74)
24/7

“73 reviews averaging 4.8 stars reflect strong consistency, with every reviewer cited awarding full marks.…”

1093 S Pearl St, Denver, CO 80209
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Authorized Service HVAC

5.0(67)

“All eight customer reviews award a perfect 5-star rating, with Mark and Jesus specifically named in at least…”

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AC Replacement Costs in Denver

Replacement costs for aging systems in Denver. If repair cost exceeds 50% of replacement, replacement is usually more economical.

ServiceLowAverageHigh
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 threshold50% 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 Denver, CO: What to Expect

Replacing AC in Denver involves one variable that doesn't apply in most markets: altitude. At 5,280 feet, cooling equipment operates at 10-15% reduced capacity, so replacement decisions require careful sizing — a direct-swap unit may underperform if the original system was already marginal. AC replacement Denver contractors familiar with local load calculations are worth prioritizing. The specialized market has 20 companies focused on replacement work, averaging 4.8 stars across 33,907 reviews.

Central AC replacement in Denver runs $6,160-$12,320 for a 3-ton basic system, $8,400-$15,680 for a 4-ton mid-efficiency unit, and $10,640-$17,920 for a 5-ton high-efficiency setup — reflecting both altitude adjustment and Denver's higher labor costs. Colorado has no statewide HVAC contractor license; replaced systems must be permitted and inspected under local Denver or county jurisdiction.

Customers at Denver's top replacement contractors consistently name specific technicians. Applewood's Victor Olea, Isaac, Jorge, Keith, and Jack each appear in independent reviews — Victor praised for honest, cost-conscious equipment guidance; the others for installation quality. Brothers Plumbing, Heating & Electric's Isaac, Scott, Chandler, and Victor draw repeat mentions across one of Denver's largest review bases. At A Better Plumber (an Absolute Plumbing Company), Gabriel is noted for inspecting aging pipes beyond the original replacement scope and providing a detailed condition report at no extra charge, while Frank receives praise for walking customers through every step of the replacement process.

Frequently Asked Questions

AC replacement in Denver runs $2,352-$17,920 depending on system size and efficiency. A 3-ton basic central AC costs $5,500-$11,000 installed, a 4-ton mid-efficiency system $7,500-$14,000, and a 5-ton high-efficiency unit $9,500-$16,000. Full HVAC replacement (AC + furnace combined) averages $11,590-$14,100.

All HVAC Contractors in Denver, CO

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