67/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 4,666 Google reviews, the most in Merrillville.
- 4.9★ from 4,666 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 506 E Summit St, Crown Point, IN 46307
Best HVAC Contractors in Merrillville, IN (2026)
261 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Merrillville: Summers Plumbing Heating & Cooling, CR Score 67/100; 4.9★ from 4,666 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): AAA Services, Inc. - Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 261.
- 5
Most-reviewed: Home Comfort Experts, 4,299 Google reviews at 4.9★, the most of 261 ranked after Summers Plumbing Heating & Cooling; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
261 Merrillville HVAC contractors are ranked here by CR Score, from ten published factors. 100 are open 24/7, 171 open Saturdays and 138 open Sundays, based on posted hours. The median Google rating is 4.8★ across 261 rated businesses.
Top 10 HVAC contractors in Merrillville at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Summers Plumbing Heating & Cooling | 67 | 4.9★ (4,666) | Crown Point, 4 mi away | 24/7 | Overall |
| 2 | AAA Services, Inc. - Heating, Air Conditioning & Plumbing | 65 | 4.9★ (486) | Merrillville | 24/7 | Emergencies |
| 3 | EcoEdge Systems Heating & Cooling | 65 | 4.9★ (486) | Merrillville | 24/7 | — |
| 4 | Comfort Aire Inc | 64 | 4.8★ (508) | Merrillville | 24/7 | — |
| 5 | Home Comfort Experts | 64 | 4.9★ (4,299) | Valparaiso, 16 mi away | 24/7 | Most reviews |
| 6 | Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 64 | 4.8★ (516) | Hobart, 2 mi away | 24/7 | — |
| 7 | Summers Plumbing Heating & Cooling | 64 | 4.9★ (3,188) | Valparaiso, 16 mi away | 24/7 | — |
| 8 | Illiana Heating & Air Conditioning, Inc. | 63 | 4.9★ (2,179) | Cedar Lake, 9 mi away | Sat · Sun · Evenings | — |
| 9 | Area Sheet Metal, Heating, Cooling, and Metal Fabrication | 63 | 5.0★ (310) | Hobart, 6 mi away | 24/7 | — |
| 10 | True Quality HVAC | 63 | 5.0★ (368) | Gary, 7 mi away | 24/7 | — |
The 261 best HVAC contractors in Merrillville, ranked
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.
Based in Merrillville
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 486 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 486 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7924 Independence St, Merrillville, IN 46410
Based in Merrillville
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 486 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 486 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3490 E 83rd Pl, Merrillville, IN 46410
Based in Merrillville
64/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 508 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 508 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8269 Buchanan St, Merrillville, IN 46410
Based in Valparaiso, 16 mi away
64/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 4,299 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 4,299 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3505 Redbow Dr, Valparaiso, IN 46383
Based in Hobart, 2 mi away
64/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 516 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 516 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6241 Northwind Pkwy, Hobart, IN 46342
Based in Valparaiso, 16 mi away
64/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 3,188 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,188 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1260 Transport Dr, Valparaiso, IN 46383
Based in Cedar Lake, 9 mi away
63/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 2,179 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 2,179 Google reviews
- Hours
- Mon–Sun 8 AM–11 PM
- Address
- 11407 Wicker Ave, Cedar Lake, IN 46303
Based in Hobart, 6 mi away
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 310 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 409 S Shelby St, Hobart, IN 46342
Based in Gary, 7 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 368 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 368 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Crown Point, 4 mi away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 275 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 275 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1124 Arrowhead Ct, Crown Point, IN 46307
Based in Hobart, 6 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 295 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 295 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 541 N Wisconsin St, Hobart, IN 46342
Based in Crown Point, 5 mi away
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 152 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 152 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 123 N Main St Suite 004 A, Crown Point, IN 46307
#14 All-Star Service
Based in Valparaiso, 9 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 526 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 526 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 519 W US Hwy 30, Valparaiso, IN 46385
Based in Steger, 15 mi away
62/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 1,449 Google reviews, listed on Google as “Furnace repair service”.
- 4.8★ from 1,449 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3102 Louis Sherman Dr, Steger, IL 60475
Based in Hobart, 6 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 132 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 132 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 848 E Hickey St Unit A, Hobart, IN 46342
Based in Valparaiso, 14 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 998 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 998 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 653 Axe Ave, Valparaiso, IN 46383
Based in Merrillville
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 73 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 73 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1580 E 90th Pl, Merrillville, IN 46410
Based in Crestwood, 24 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 3,722 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 3,722 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14017 S Cicero Ave, Crestwood, IL 60418
Based in Portage, 11 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 788 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 788 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5705 Old Porter Rd, Portage, IN 46368
Based in Oak Forest, 23 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 3,996 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 3,996 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4813 W 159th St, Oak Forest, IL 60452
Based in Homewood, 18 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 2,200 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,200 Google reviews
- Hours
- Mon–Sun 8 AM–10 PM
- Address
- 17907 Dixie Hwy, Homewood, IL 60430
Based in Valparaiso, 14 mi away
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 346 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 346 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 257 Indiana Ave, Valparaiso, IN 46383
Based in Schererville, 3 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 1,120 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,120 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 5050 W 81st Ave, Schererville, IN 46375
Based in Homer Glen, 3 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
HVAC contractors ranked #26 to #50
#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 261 ranked HVAC contractors here; the rest are on their profiles.
Also serving Merrillville
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 |
|---|---|---|
| AmeriClean | 4.9★ (2,141) | In Merrillville |
| Arctic Engineering Co Inc | 5.0★ (5) | In Merrillville |
| Chayhitz Repair | 5.0★ (2) | 13 mi |
| Cosmic HVAC Inc | In Merrillville | |
| Crown Heating & Cooling Inc | 1.0★ (2) | 4 mi |
| Earl's Heating & Airconditiong | 5.0★ (2) | In Merrillville |
| EDCO Environmental Service, Inc. | 3.6★ (9) | 2 mi |
| Elemental Air Heating & Cooling | 5.0★ (109) | 23 mi |
| Gray's Total Green Energy Solutions LLC | 4.4★ (127) | 14 mi |
| HVAC Masters | 5.0★ (2) | 14 mi |
| Indoor Comfort Heating And Cooling | 5.0★ (2) | 20 mi |
| Mockler Heating & AC Inc | 5.0★ (2) | 15 mi |
| Mountain Top Heating Air & Appliance Repair Inc.repair | 4.6★ (117) | 17 mi |
| PCS Refrigeration LLC | 5.0★ (10) | 6 mi |
| Perry Heating & Air Conditioning LLC | 5.0★ (2) | 22 mi |
| Posen Heating & Air Services | 5.0★ (2) | 21 mi |
| Regional Plumbing Heating & Air | 4.6★ (22) | 8 mi |
| Rps Heating & Air | 5.0★ (2) | 23 mi |
| supreme heating llc | 5.0★ (2) | 22 mi |
| Tai's Heating and Air | 5.0★ (2) | 2 mi |
How much do HVAC contractors cost in Merrillville?
National price ranges in USD, not adjusted for Merrillville. 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 |
When to hire an HVAC contractor in Indiana
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.
How we ranked Merrillville HVAC contractors
We scored 261 Merrillville 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 Merrillville 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 |
HVAC contractors in Merrillville: frequently asked questions
Who is the best HVAC contractor in Merrillville?
By CR Score, the highest-ranked HVAC contractor in Merrillville, IN is Summers Plumbing Heating & Cooling with a CR Score of 67/100. It has 4.9★ from 4,666 Google reviews. It is open 24/7. AAA Services, Inc. - Heating, Air Conditioning & Plumbing (#2) and EcoEdge Systems Heating & Cooling (#3) follow. We ranked 261 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Merrillville?
ContractorsRanked ranks 261 HVAC contractors serving Merrillville, IN. 4 of them are based in Merrillville; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Merrillville are open 24/7?
100 ranked HVAC contractors in Merrillville post 24/7 hours. The highest-ranked are Summers Plumbing Heating & Cooling (#1), AAA Services, Inc. - Heating, Air Conditioning & Plumbing (#2) and EcoEdge Systems Heating & Cooling (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Merrillville work on weekends?
171 of 261 ranked HVAC contractors post Saturday hours and 138 post Sunday hours. The highest-ranked open Saturdays are Summers Plumbing Heating & Cooling (#1), AAA Services, Inc. - Heating, Air Conditioning & Plumbing (#2) and EcoEdge Systems Heating & Cooling (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Merrillville?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Merrillville. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Merrillville HVAC contractors have?
The median Google rating among 261 rated HVAC contractors in Merrillville is 4.8★, with a median of 24 reviews. Summers Plumbing Heating & Cooling has the most, 4,666 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Merrillville?
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.
How does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Merrillville
- October 2026: CR Scores recalculated for 261 hvac contractors serving Merrillville.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Merrillville pages
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Other trades in Merrillville
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- Deck builders in Merrillville66 ranked
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- Window installers in Merrillville355 ranked
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- Solar installers in Merrillville55 ranked
- Garage door repair companies in Merrillville21 ranked
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- All contractors in Merrillville