188 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lowell: Summers Plumbing Heating & Cooling, CR Score 94/100; 4.9★ from 4,666 Google reviews; open 24/7.
Best for emergencies (open 24/7): True Quality HVAC, posts 24/7 hours; ranked #2 of 188.
Most-reviewed: Home Comfort Experts, 4,299 Google reviews at 4.9★, the most of 188 ranked after Summers Plumbing Heating & Cooling; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
188 Lowell HVAC contractors are ranked here by CR Score, from 8 published factors. 78 are open 24/7, 119 open Saturdays and 95 open Sundays, based on posted hours. The median Google rating is 4.9★ across 188 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Summers Plumbing Heating & Cooling | 94 | 4.9★ (4,666) | Crown Point, 10 mi away | 24/7 | Overall |
| 2 | True Quality HVAC | 91 | 5.0★ (368) | Gary, 7 mi away | 24/7 | Emergencies |
| 3 | Home Comfort Experts | 90 | 4.9★ (4,299) | Valparaiso, 24 mi away | 24/7 | Most reviews |
| 4 | Summers Plumbing Heating & Cooling | 90 | 4.9★ (3,188) | Valparaiso, 24 mi away | 24/7 | — |
| 5 | Illiana Heating & Air Conditioning, Inc. | 90 | 4.9★ (2,179) | Cedar Lake, 9 mi away | Sat · Sun · Evenings | — |
| 6 | AAA Services, Inc. - Heating, Air Conditioning & Plumbing | 89 | 4.9★ (486) | Merrillville, 13 mi away | 24/7 | — |
| 7 | Merts Heating & Air Conditioning | 89 | 4.8★ (1,449) | Steger, 17 mi away | 24/7 | — |
| 8 | All American AC & Heating Repair | 89 | 4.9★ (275) | Crown Point, 10 mi away | 24/7 | — |
| 9 | EcoEdge Systems Heating & Cooling | 89 | 5.0★ (152) | Crown Point, 9 mi away | 24/7 | — |
| 10 | EcoEdge Systems Heating & Cooling | 89 | 4.9★ (486) | Merrillville, 14 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and review volume: 4.9★ from 4,666 Google reviews, the most Google reviews on this list (4,666).
Based in Gary, 7 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 368 Google reviews, open 24/7.
Based in Valparaiso, 24 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 4,299 Google reviews, open 24/7.
Based in Valparaiso, 24 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 3,188 Google reviews, open 24/7.
Based in Cedar Lake, 9 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 2,179 Google reviews, listed on Google as “Heating contractor”.
Based in Merrillville, 13 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 486 Google reviews, open 24/7.
Based in Steger, 17 mi away
Ranked #7 because of its Google rating and availability: 4.8★ from 1,449 Google reviews, open 24/7.
Based in Crown Point, 10 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 275 Google reviews, open 24/7.
Based in Crown Point, 9 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 152 Google reviews, open 24/7.
Based in Merrillville, 14 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 486 Google reviews, open 24/7.
Based in Merrillville, 13 mi away
Ranked #11 because of its Google rating and availability: 4.8★ from 508 Google reviews, open 24/7.
Based in Hobart, 16 mi away
Ranked #12 because of its Google rating and availability: 4.8★ from 516 Google reviews, open 24/7.
Based in Hobart, 19 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 310 Google reviews, open 24/7.
Based in Valparaiso, 18 mi away
Ranked #14 because of its Google rating and availability: 4.8★ from 526 Google reviews, open 24/7.
Based in Lowell
Ranked #15 because of its Google rating and availability: 4.4★ from 127 Google reviews, open 24/7.
Based in Valparaiso, 22 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 998 Google reviews, open 24/7.
Based in Hobart, 19 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 295 Google reviews, open 24/7.
Based in Valparaiso, 22 mi away
Ranked #18 because of its Google rating and availability: 4.9★ from 346 Google reviews, open 24/7.
Based in Hobart, 19 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 132 Google reviews, open 24/7.
Based in Crown Point, 10 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 35 Google reviews, open 24/7.
Based in Merrillville, 13 mi away
Ranked #21 because of its Google rating and availability: 4.8★ from 73 Google reviews, open 24/7.
Based in Homewood, 23 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 2,200 Google reviews, listed on Google as “HVAC contractor”.
Based in Bourbonnais, 25 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 220 Google reviews, open 24/7.
Based in Crown Point, 10 mi away
Ranked #24 because of its Google rating and availability: 4.8★ from 41 Google reviews, open 24/7.
Based in Homer Glen, 11 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
#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 188 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 |
|---|---|---|
| Bennett Heating & Air Conditioning | 4.5★ (67) | 20 mi |
| Better Repair & Remodel | 5.0★ (1) | 15 mi |
| Chayhitz Repair | 5.0★ (2) | 25 mi |
| Cook's Heating & Cooling | 1.0★ (1) | 12 mi |
| Crown Heating & Cooling Inc | 1.0★ (2) | 11 mi |
| Crown Point HVAC | 5.0★ (1) | 10 mi |
| Current Climate | 5.0★ (1) | 9 mi |
| Davis Heating and Air Conditioning | 5.0★ (4) | 13 mi |
| Earl's Heating & Airconditiong | 5.0★ (2) | 13 mi |
| Fred's Heating & Air Conditioning | 5.0★ (1) | 12 mi |
| GNS Heating & Cooling | 5.0★ (2) | 24 mi |
| HVAC Masters | 5.0★ (2) | 21 mi |
| JTR Heating & Air Conditioning | 4.2★ (68) | 19 mi |
| KC Refrigeration and HVAC | 3.0★ (2) | 24 mi |
| Mikes Service | In Lowell | |
| Mockler Heating & AC Inc | 5.0★ (2) | 23 mi |
| NorthwesthvacLLC | 5.0★ (1) | 18 mi |
| R & R Heating & AC | 5.0★ (1) | 17 mi |
| Sun Ray Heating LLC | 4.5★ (67) | 20 mi |
| Tai's Heating and Air | 5.0★ (2) | 16 mi |
National price ranges in USD, not adjusted for Lowell. 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 Indiana, 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 188 Lowell 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 Lowell 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 |