22 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Medicine Hat: A+E Air Plumbing & Heating Inc., CR Score 63/100; 5.0★ from 561 Google reviews.
Best for emergencies (open 24/7): Big S Refrigeration & HVAC, posts 24/7 hours; ranked #3 of 22.
Most-reviewed: Marvelous Plumbing & Heating, 809 Google reviews at 4.8★, the most of 22 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
22 Medicine Hat HVAC contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 5 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 22 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A+E Air Plumbing & Heating Inc. | 63 | 5.0★ (561) | Medicine Hat | — | Overall |
| 2 | Marvelous Plumbing & Heating | 63 | 4.8★ (809) | Medicine Hat | — | Most reviews |
| 3 | Big S Refrigeration & HVAC | 62 | 5.0★ (36) | Medicine Hat | 24/7 | Emergencies |
| 4 | Irwin's Heating Service | 61 | 4.7★ (23) | Medicine Hat | 24/7 | — |
| 5 | RNR Plumbing Ltd. O/A RNR Mechanical | 59 | 4.9★ (116) | Medicine Hat | — | — |
| 6 | Design Air Ltd | 59 | 4.9★ (90) | Medicine Hat | — | — |
| 7 | Medicine Hat Refrigeration & Air Conditioning Ltd | 59 | 4.8★ (44) | Medicine Hat | Emergency | — |
| 8 | Baumann's Ventilation & Plumbing Ltd | 56 | 4.4★ (65) | Medicine Hat | — | — |
| 9 | Cozart Heating and Air Conditioning Ltd. | 56 | 5.0★ (20) | Medicine Hat | — | — |
| 10 | Pro Flow Plumbing & Heating | 56 | 4.9★ (10) | Medicine Hat | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 561 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #2 because of its Google rating and review volume: 4.8★ from 809 Google reviews, the most in Medicine Hat.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #3 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #4 because of its Google rating and trade focus: 4.7★ from 23 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #5 because of its Google rating and trade focus: 4.9★ from 116 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #6 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #7 because of its Google rating and trade focus: 4.8★ from 44 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #8 because of its Google rating and trade focus: 4.4★ from 65 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #9 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #10 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #11 because of its Google rating and trade focus: 4.4★ from 39 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #12 because of its Google rating and trade focus: 4.1★ from 47 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #13 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #14 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #15 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #16 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #18 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #19 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Medicine Hat
Ranked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #21 because of its Google rating and trade focus: 3.5★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Medicine Hat
Ranked #22 because of its Google rating and trade focus: 4.6★ from 18 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
11 more HVAC contractors within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Comfort Zone Insulators | In Medicine Hat | |
| Energy Plus Insulation | 5.0★ (20) | In Medicine Hat |
| Gateway Mechanical Services | In Medicine Hat | |
| Gerry Peters Plumbing & Sheet Metal | 4.0★ (31) | In Medicine Hat |
| Homey Handyman Medicine Hat | 4.8★ (24) | In Medicine Hat |
| Irwin's Heating Service | 3.0★ (2) | In Medicine Hat |
| Nagel's Metal Contractors Ltd | In Medicine Hat | |
| Pro Desk at RONA | In Medicine Hat | |
| Pro Flow Plumbing & Heating Corp. | 5.0★ (1) | In Medicine Hat |
| Quick Way Electrical & Security | 4.7★ (43) | In Medicine Hat |
| ServiceMaster Restore of Medicine Hat | 4.9★ (16) | In Medicine Hat |
US national ranges converted to CAD, not adjusted for Medicine Hat. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | CA$5,460 | CA$8,400 | CA$11,350 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
| Furnace replacement | CA$3,970 | CA$6,770 | CA$9,690 | Per system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
In Alberta, 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 22 Medicine Hat 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 Medicine Hat 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 |