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Best HVAC Contractors in Fort Collins, CO (2026)

218 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Fort Collins: Allen Service, CR Score 68/100; 4.8★ from 6,401 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Fort Collins Heating & Air Conditioning and Plumbing, posts 24/7 hours; ranked #2 of 218.

  3. 3

    Most-reviewed: Lion Home Service, 5,912 Google reviews at 4.7★, the most of 218 ranked after Allen Service; ranked #3.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

218 Fort Collins HVAC contractors are ranked here by CR Score, from ten published factors. 85 are open 24/7, 125 open Saturdays and 107 open Sundays, based on posted hours. The median Google rating is 4.9★ across 218 rated businesses.

Top 10 HVAC contractors in Fort Collins at a glance

Top 10 HVAC contractors in Fort Collins at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Allen Service684.8★ (6,401)Fort Collins24/7Overall
2Fort Collins Heating & Air Conditioning and Plumbing674.9★ (3,171)Fort Collins24/7Emergencies
3Lion Home Service674.7★ (5,912)Fort Collins24/7Most reviews
4Balance Point Heating, Cooling & Plumbing655.0★ (486)Fort Collins24/7—
5AAA Service Plumbing, Heating & Electric655.0★ (426)Fort Collins24/7—
6Horsetooth Heating, Air & Plumbing654.9★ (530)Fort Collins24/7—
7Cool Ducts Heating and Cooling644.9★ (451)Fort Collins24/7—
8One Hour Heating & Air Conditioning® of Loveland644.8★ (2,777)Loveland, 10 mi away24/7—
9Welzig Heating, Cooling, Plumbing & Electric644.9★ (296)Fort Collins24/7—
10Swan Plumbing Heating & Air Of Loveland644.8★ (2,466)Loveland, 11 mi away24/7—

The 218 best HVAC contractors in Fort Collins, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Fort Collins

    #1 Allen Service

    Based in Fort Collins

    68/100CR Score

    Ranked #1 because of its Google rating and review volume: 4.8★ from 6,401 Google reviews, the most in Fort Collins.

    • 4.8★ from 6,401 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    101 S Link Ln, Fort Collins, CO 80524
    View profile for Allen Service(970) 484-4841

  3. #3 Lion Home Service

    Based in Fort Collins

    67/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.7★ from 5,912 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 5,912 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4868 Innovation Dr, Fort Collins, CO 80525
    View profile for Lion Home Service(970) 829-8222

  12. #12 Limelight Services

    Based in Johnstown, 14 mi away

    63/100CR Score

    Ranked #12 because of its Google rating and trade focus: 5.0★ from 1,508 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 1,508 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4540 Venture Dr #100, Johnstown, CO 80534
    View profile for Limelight Services(970) 218-9539

  15. #15 Plumbline Services

    Based in Loveland, 9 mi away

    63/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.8★ from 1,106 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,106 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    395 W 67th St, Loveland, CO 80538
    View profile for Plumbline Services(970) 235-2606

  17. #17 Poudre Valley Air

    Based in Fort Collins

    63/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.6★ from 431 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 431 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2416 Donella Ct Unit A, Fort Collins, CO 80524
    View profile for Poudre Valley Air(970) 235-2645

HVAC contractors ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 218 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Fort Collins, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Reliable Fort Collins HVAC Repair615.0★ (32)In Fort Collins
27Specialized 72 Degrees Air Conditioning & Heating604.8★ (30)In Fort Collins
28True Mechanical Services LLC605.0★ (52)In Fort Collins
29Valley Heating, Air and Refrigeration Inc605.0★ (402)13 mi
30Calvary Plumbing and Heating604.6★ (38)In Fort Collins
31Triple Point Heating & Air605.0★ (65)9 mi
32Home Service Solutions LLC594.9★ (646)9 mi
33Origin Plumbing Heating Cooling Electrical595.0★ (384)22 mi
34Choice City Heating & Air Conditioning Inc.595.0★ (12)In Fort Collins
35Compass Heating and Cooling595.0★ (252)In Fort Collins
36Lighten Up Plumbing, Heating, Cooling and Electric594.7★ (805)In Fort Collins
37MGI Mechanical Services594.9★ (229)18 mi
38Northern Air594.1★ (92)In Fort Collins
39Tri-City Heating & Air Conditioning Inc.594.9★ (113)14 mi
40NOCO Air Experts594.9★ (224)12 mi
41NoCo Heating and Air, Inc.594.9★ (61)In Fort Collins
42McCormick Heating & Cooling595.0★ (896)23 mi
43Neuworks Mechanical594.2★ (26)In Fort Collins
44HALO Heating and Air585.0★ (64)13 mi
45Sandbox Solar584.9★ (263)In Fort Collins
46Origin Plumbing Heating Cooling Electrical - Fort Collins584.6★ (10)In Fort Collins
47Paul's Anytime Plumbing, Heating & Cooling584.7★ (155)14 mi
48A-1 Heating and Air Conditioning Services584.9★ (301)22 mi
49Air Comfort584.0★ (63)In Fort Collins
50Rock Solid Plumbing Heating and Air584.9★ (69)13 mi

Also serving Fort Collins

20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Fort Collins
BusinessGoogle ratingDistance
A & M Electric3.0★ (2)In Fort Collins
Air Comfort Complete Inc4.9★ (47)13 mi
American Dream Home ServicesIn Fort Collins
Arctic Heating & AirIn Fort Collins
Brambo Plumbing & Heating LLC4.9★ (54)In Fort Collins
Comfort Zone HVAC5.0★ (96)18 mi
Global HVAC ServicesIn Fort Collins
Heating & Cooling Services5.0★ (2)In Fort Collins
Hines Corp5.0★ (2)In Fort Collins
Independent Power - Fort Collins5.0★ (2)In Fort Collins
Lemons Heating & Cooling4.9★ (298)23 mi
MONTY'S HEATING AND AIR5.0★ (2)13 mi
NoCo Local Pluming And Heating5.0★ (2)In Fort Collins
Polar Bear Plumbing Heating & Air5.0★ (541)13 mi
Poudre Valley Air3.8★ (18)In Fort Collins
RPM Mechanical LLC2.3★ (3)In Fort Collins
SERVPRO of Fort Collins4.5★ (185)In Fort Collins
Thin Air Heating and Cooling, LLC4.2★ (5)In Fort Collins
Trane Commercial Sales Office1.0★ (1)In Fort Collins
Trusted Loveland HVAC Repair5.0★ (45)14 mi

How much do HVAC contractors cost in Fort Collins?

National price ranges in USD, not adjusted for Fort Collins. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Fort Collins?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

When to hire an HVAC contractor in Colorado

In Colorado, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Fort Collins HVAC contractors

We scored 218 Fort Collins HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Fort Collins data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

HVAC contractors in Fort Collins: frequently asked questions

Who is the best HVAC contractor in Fort Collins?

By CR Score, the highest-ranked HVAC contractor in Fort Collins, CO is Allen Service with a CR Score of 68/100. It has 4.8★ from 6,401 Google reviews. It is open 24/7. Fort Collins Heating & Air Conditioning and Plumbing (#2) and Lion Home Service (#3) follow. We ranked 218 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Fort Collins?

ContractorsRanked ranks 218 HVAC contractors serving Fort Collins, CO. 30 of them are based in Fort Collins; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Fort Collins are open 24/7?

85 ranked HVAC contractors in Fort Collins post 24/7 hours. The highest-ranked are Allen Service (#1), Fort Collins Heating & Air Conditioning and Plumbing (#2) and Lion Home Service (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Fort Collins work on weekends?

125 of 218 ranked HVAC contractors post Saturday hours and 107 post Sunday hours. The highest-ranked open Saturdays are Allen Service (#1), Fort Collins Heating & Air Conditioning and Plumbing (#2) and Lion Home Service (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Fort Collins?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Fort Collins. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Fort Collins HVAC contractors have?

The median Google rating among 218 rated HVAC contractors in Fort Collins is 4.9★, with a median of 35 reviews. Allen Service has the most, 6,401 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Fort Collins?

In Colorado, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How does ContractorsRanked rank HVAC contractors?

Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Fort Collins

  1. October 2026: CR Scores recalculated for 218 hvac contractors serving Fort Collins.
  2. October 2026: 2 duplicate listings merged.

More HVAC contractors and Fort Collins pages

Other trades in Fort Collins