34 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sparta: TheKeyToComfort.com, CR Score 82/100; 4.6★ from 52 Google reviews; open Saturdays until 12 PM.
Best for emergencies (open 24/7): Trane Technologies Manufacturing Plant, posts 24/7 hours; ranked #16 of 34.
Most-reviewed: Bagniefski Heating and Air Conditioning, 1,240 Google reviews at 5.0★, the most of 34 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
34 Sparta HVAC contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 7 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 4.7★ across 34 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | TheKeyToComfort.com | 82 | 4.6★ (52) | Sparta | Sat | Overall |
| 2 | Arctic Heating Cooling & Metal Fab | 80 | 4.9★ (88) | Sparta | — | — |
| 3 | Bagniefski Heating and Air Conditioning | 80 | 5.0★ (1,240) | La Crosse, 24 mi away | — | Most reviews |
| 4 | Coulee Region Heating & Air Conditioning, LLC | 80 | 4.8★ (41) | Onalaska, 20 mi away | — | — |
| 5 | Heating & Air Conditioning | 79 | 5.0★ (24) | Onalaska, 19 mi away | Sat · Sun · Evenings | — |
| 6 | Paul's Heating & Air Conditioning | 79 | 4.9★ (589) | Onalaska, 21 mi away | — | — |
| 7 | Schneider Heating & Air Conditioning, Inc. | 78 | 4.8★ (681) | Onalaska, 22 mi away | — | — |
| 8 | Schneider Heating & Air Conditioning, Inc | 77 | 4.5★ (41) | Sparta | — | — |
| 9 | Storkel Heating & Cooling | 77 | 4.0★ (20) | Tomah, 16 mi away | Sat · Sun | — |
| 10 | Ron Hammes Refrigeration | 76 | 4.9★ (210) | La Crosse, 24 mi away | — | — |
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 trade focus: 4.6★ from 52 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sparta
Ranked #2 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 24 mi away
Ranked #3 because of its Google rating and review volume: 5.0★ from 1,240 Google reviews, the most Google reviews on this list (1,240).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Onalaska, 20 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Onalaska, 19 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Onalaska, 21 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 589 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Onalaska, 22 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 681 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sparta
Ranked #8 because of its Google rating and trade focus: 4.5★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Tomah, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.0★ from 20 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 24 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 210 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Tomah, 22 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ 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 La Crosse, 22 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Salem, 14 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 23 mi away
Ranked #14 because of its Google rating and trade focus: 3.9★ from 50 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 23 mi away
Ranked #15 because of its Google rating and trade focus: 3.8★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in La Crosse, 24 mi away
Ranked #16 because of its Google rating and trade focus: 4.5★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 23 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 23 mi away
Ranked #18 because of its Google rating and trade focus: 4.6★ from 132 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 22 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 19 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 24 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Tomah, 16 mi away
Ranked #21 because of its Google rating and trade focus: 4.5★ from 26 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Holmen, 22 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 58 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Tomah, 16 mi away
Ranked #23 because of its Google rating and trade focus: 4.3★ from 35 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Salem, 14 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in La Crosse, 22 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “HVAC 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 #34, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Benedict Sales & Service - La Crosse | 70 | 4.0★ (4) | 14 mi |
| 27 | Ona Sheet Metal | 69 | 5.0★ (5) | 21 mi |
| 28 | Bernie Buchner, Inc. | 69 | 4.1★ (56) | 23 mi |
| 29 | Coulee Region Mechanical Contractors Inc | 68 | 5.0★ (3) | 21 mi |
| 30 | Scott Roble Plumbing & Heating | 68 | 4.3★ (6) | 23 mi |
| 31 | Trane Commercial Sales Office | 68 | 4.7★ (3) | 21 mi |
| 32 | Every Plumbing & Heating, Inc. | 67 | 4.3★ (52) | 22 mi |
| 33 | Prime Source Plumbing And Heating | 66 | 4.4★ (16) | 21 mi |
| 34 | Warming Trends Inc | 64 | 3.8★ (71) | 23 mi |
18 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 |
|---|---|---|
| Absolute Comfort Heating and Air Conditioning | 5.0★ (1) | 22 mi |
| Action Plumbing & Heating | 4.5★ (2) | 25 mi |
| B & B Plumbing Inc | 4.5★ (47) | In Sparta |
| Delta T Inc | 5.0★ (1) | 22 mi |
| Deml Controls | 23 mi | |
| Duff Heating | 20 mi | |
| Duff Heating | 23 mi | |
| Foundation Heating and Air Conditioning | 25 mi | |
| Johnson Controls Western WI Office | 20 mi | |
| LaCrosse Mechanical, Inc. | 24 mi | |
| Modern Mechanical Contractors | 5.0★ (2) | 24 mi |
| Psi Heating Systems | 3.0★ (1) | 21 mi |
| Sears Heating and Air Conditioning | 1.0★ (1) | 23 mi |
| Spartan Adams Heating & AC | In Sparta | |
| SURE PLUMBING & DESIGN | 4.6★ (22) | In Sparta |
| Tempeff North America | 23 mi | |
| Total Komfort Heating & Air Conditioning | 5.0★ (2) | 12 mi |
| Trane Building 13 | 5.0★ (1) | 23 mi |
National price ranges in USD, not adjusted for Sparta. 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 Wisconsin, 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 34 Sparta 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 Sparta 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 |