895 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Littleton: Elkhorn Heating, Air Conditioning, Plumbing & Electrical, CR Score 65/100; 4.9★ from 1,799 Google reviews; open 24/7.
Best for emergencies (open 24/7): Aim High HVAC, posts 24/7 hours; ranked #2 of 895.
Most-reviewed: AAA Service Plumbing, Heating & Electric, 12,904 Google reviews at 4.8★, the most of 895 ranked; ranked #41.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
895 Littleton HVAC contractors are ranked here by CR Score, from ten published factors. 344 are open 24/7, 637 open Saturdays and 489 open Sundays, based on posted hours. The median Google rating is 4.9★ across 895 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Elkhorn Heating, Air Conditioning, Plumbing & Electrical | 65 | 4.9★ (1,799) | Littleton | 24/7 | Overall |
| 2 | Aim High HVAC | 65 | 5.0★ (760) | Littleton | 24/7 | Emergencies |
| 3 | Emporia Home Services | 64 | 5.0★ (535) | Littleton | 24/7 | — |
| 4 | ROX Heating & Air | 64 | 4.9★ (732) | Littleton | 24/7 | — |
| 5 | Allen Service | 64 | 4.8★ (2,301) | Denver, 5 mi away | 24/7 | — |
| 6 | Priority Plumbing and Heating - Littleton | 64 | 4.8★ (963) | Littleton | 24/7 | — |
| 7 | Plumbline Services | 64 | 4.7★ (9,085) | Centennial, 10 mi away | 24/7 | — |
| 8 | Heart Heating, Cooling, Plumbing & Electric | 63 | 4.8★ (2,877) | Denver, 8 mi away | 24/7 | — |
| 9 | PS Cool Heat | 63 | 4.9★ (405) | Littleton | 24/7 | — |
| 10 | JC Mechanical Heating & Air Conditioning LLC | 63 | 4.8★ (586) | Littleton | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,799 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #2 because of its Google rating and trade focus: 5.0★ from 760 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #3 because of its Google rating and trade focus: 5.0★ from 535 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #4 because of its Google rating and trade focus: 4.9★ from 732 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,301 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #6 because of its Google rating and trade focus: 4.8★ from 963 Google reviews, listed on Google as “HVAC contractor”.
Based in Centennial, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 9,085 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 8 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 2,877 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #9 because of its Google rating and trade focus: 4.9★ from 405 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #10 because of its Google rating and trade focus: 4.8★ from 586 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #11 because of its Google rating and trade focus: 4.9★ from 388 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #12 because of its Google rating and trade focus: 4.9★ from 3,825 Google reviews, listed on Google as “HVAC contractor”.
Based in Centennial, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,310 Google reviews, listed on Google as “HVAC contractor”.
Based in Englewood, 4 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 906 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 11 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 3,635 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton, 17 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 5,597 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 15 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 3,583 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #18 because of its Google rating and trade focus: 4.9★ from 212 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 10 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 1,846 Google reviews, listed on Google as “HVAC contractor”.
Based in Lakewood, 6 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 296 Google reviews, listed on Google as “HVAC contractor”.
Based in Arvada, 13 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 1,917 Google reviews, listed on Google as “HVAC contractor”.
Based in Commerce City, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 3,443 Google reviews, listed on Google as “HVAC contractor”.
Based in Castle Rock, 18 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 2,828 Google reviews, listed on Google as “HVAC contractor”.
Based in Littleton
Ranked #24 because of its Google rating and trade focus: 4.8★ from 694 Google reviews, listed on Google as “HVAC contractor”.
Based in Wheat Ridge, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 1,352 Google reviews, listed on Google as “HVAC contractor”.
#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 895 ranked HVAC contractors here; the rest are on their profiles.
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.
| Business | Google rating | Distance |
|---|---|---|
| All A/C & Heating Solutions, Inc | 5.0★ (377) | 8 mi |
| ARS / Rescue Rooter | 4.5★ (3,114) | 14 mi |
| Blue Moon Mechanical | 5.0★ (2) | 4 mi |
| CBA Mechanical Llc | In Littleton | |
| Chatfields | In Littleton | |
| Comfort Masters Heating, Air & Electric | 4.8★ (68) | In Littleton |
| Complete Duct Cleaning | 5.0★ (2) | In Littleton |
| DEMA Plumbing & Heating | 3.0★ (2) | 7 mi |
| Doctor Fix-It Plumbing, Heating, Cooling & Electric | 4.7★ (3,903) | 5 mi |
| Fairpoint pipe and mechanical | 5.0★ (2) | In Littleton |
| Hot 'n' Cold HVAC | 5.0★ (1) | In Littleton |
| Jorde Mechanical, Inc. | In Littleton | |
| Kingdom Cooling Llc | 5.0★ (1) | In Littleton |
| Littleton Heating & A/C Installation & Service | In Littleton | |
| One Nation Plumbing, Heating & Air | 5.0★ (259) | 9 mi |
| Service Hvac LLC | In Littleton | |
| Summit Littleton AC Repair | In Littleton | |
| United Test and Balance | 5.0★ (1) | In Littleton |
| Voltman Electric | 5.0★ (46) | In Littleton |
| Zang Heating and Air Conditioning | In Littleton |
National price ranges in USD, not adjusted for Littleton. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
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.
We scored 895 Littleton 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.
| Factor | Weight | Computed from | In Littleton data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |