32 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Great Falls: Kindred Plumbing and Heating, Inc., CR Score 94/100; 4.6★ from 279 Google reviews; open 24/7.
Best for emergencies (open 24/7): The Water Boyz LLC, posts 24/7 hours; ranked #2 of 32.
Most-reviewed: Northern Heating & Cooling, 193 Google reviews at 4.9★, the most of 32 ranked after Kindred Plumbing and Heating, Inc.; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
32 Great Falls HVAC contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 9 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.7★ across 32 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kindred Plumbing and Heating, Inc. | 94 | 4.6★ (279) | Great Falls | 24/7 | Overall |
| 2 | The Water Boyz LLC | 89 | 4.8★ (24) | Great Falls | 24/7 | Emergencies |
| 3 | All About You Plumbing and Heating | 86 | 4.5★ (75) | Great Falls | 24/7 | — |
| 4 | Sawtooth Mechanical & Construction | 85 | 3.5★ (13) | Great Falls | 24/7 | — |
| 5 | MacDonald Heating & Cooling | 85 | 4.9★ (17) | Great Falls | — | — |
| 6 | Northern Heating & Cooling | 84 | 4.9★ (193) | Great Falls | — | Most reviews |
| 7 | MT Cool HVAC | 83 | 5.0★ (7) | Great Falls | Sat · Sun · Evenings | — |
| 8 | Fairway Comfort Systems | 83 | 4.6★ (10) | Great Falls | — | — |
| 9 | Combustion Service Co. Inc. | 82 | 4.5★ (4) | Great Falls | 24/7 | — |
| 10 | HVAC & Refrigeration | 82 | 4.8★ (15) | Great Falls | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.6★ from 279 Google reviews, the most Google reviews on this list (279).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #2 because of its Google rating and availability: 4.8★ from 24 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #3 because of its Google rating and availability: 4.5★ from 75 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #4 because of its Google rating and availability: 3.5★ from 13 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #5 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #6 because of its Google rating and trade focus: 4.9★ from 193 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #7 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #8 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #9 because of its Google rating and availability: 4.5★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #10 because of its Google rating and trade focus: 4.8★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #11 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #12 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #13 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #14 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #15 because of its Google rating and trade focus: 4.7★ from 45 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #16 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #17 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “General contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #18 because of its Google rating and trade focus: 4.5★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #19 because of its Google rating and trade focus: 4.0★ from 60 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #20 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #21 because of its Google rating and trade focus: 4.5★ from 17 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #22 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Great Falls
Ranked #23 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #24 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Great Falls
Ranked #25 because of its Google rating and trade focus: 4.7★ from 6 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #32, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Advanced Air L.L.C | 73 | 5.0★ (5) | In Great Falls |
| 27 | Home Services at The Home Depot | 73 | 2.3★ (9) | In Great Falls |
| 28 | AT Klemens | 73 | 4.6★ (62) | In Great Falls |
| 29 | Polzin Plumbing | 72 | 5.0★ (27) | In Great Falls |
| 30 | Wilson’s quality comfort | 72 | 4.3★ (6) | In Great Falls |
| 31 | Electric City Plumbing | 68 | 4.7★ (12) | In Great Falls |
| 32 | Falls Plumbing Inc | 68 | 4.6★ (12) | In Great Falls |
12 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 |
|---|---|---|
| Bobcat Plumbing & Heating | 5.0★ (1) | 1 mi |
| Central Solutions | 3.0★ (2) | In Great Falls |
| Dynamic Insulation | In Great Falls | |
| Falls Mechanical Plumbing Heating Air Conditioning | In Great Falls | |
| Ferguson Plumbing Supply | 4.6★ (9) | In Great Falls |
| Great Falls Heating & Air Conditioning | 5.0★ (1) | In Great Falls |
| Johnson Controls Inc. | In Great Falls | |
| KMS Heating | In Great Falls | |
| Northern Heating & Cooling Warehouse (Appointment only) | In Great Falls | |
| SERVPRO of Helena & Great Falls | 4.9★ (69) | In Great Falls |
| Sound-Air Inc | In Great Falls | |
| Trane - Heating & Cooling Services | 5.0★ (1) | In Great Falls |
National price ranges in USD, not adjusted for Great Falls. 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 Montana, 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 32 Great Falls HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Great Falls data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |