64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 5,835 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 5,835 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best HVAC Contractors in Caldwell, ID (2026)
206 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Caldwell: Diamond Heating, Cooling, Plumbing & Electric, CR Score 64/100; 4.9★ from 5,835 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Right Now Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 206.
- 9
Most-reviewed: Right Now Heating and Air Conditioning, 8,584 Google reviews at 4.8★, the most of 206 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
206 Caldwell HVAC contractors are ranked here by CR Score, from ten published factors. 90 are open 24/7, 134 open Saturdays and 115 open Sundays, based on posted hours. The median Google rating is 4.9★ across 206 rated businesses.
Top 10 HVAC contractors in Caldwell at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Diamond Heating, Cooling, Plumbing & Electric | 64 | 4.9★ (5,835) | Meridian, 14 mi away | 24/7 | Overall |
| 2 | Right Now Heating, Air Conditioning & Plumbing | 64 | 4.8★ (7,383) | Caldwell | 24/7 | Emergencies |
| 3 | A-1 Heating, Air Conditioning & Electric | 63 | 4.9★ (3,503) | Meridian, 14 mi away | 24/7 | — |
| 4 | Greens Heating & Air Conditioning | 63 | 4.9★ (1,216) | Nampa, 10 mi away | 24/7 | — |
| 5 | Right Now Heating and Air Conditioning & Plumbing | 63 | 5.0★ (1,803) | Meridian, 16 mi away | 24/7 | — |
| 6 | Owyhee Heating and Air Conditioning | 62 | 4.8★ (991) | Nampa, 9 mi away | 24/7 | — |
| 7 | Ultimate Heating & Air, Inc | 62 | 4.9★ (2,080) | Meridian, 16 mi away | 24/7 | — |
| 8 | J&D Heating, Cooling, & Water | 62 | 4.8★ (993) | Nampa, 11 mi away | 24/7 | — |
| 9 | Right Now Heating and Air Conditioning | 62 | 4.8★ (8,584) | Boise, 22 mi away | 24/7 | Most reviews |
| 10 | Bill's Heating & A/C | 62 | 5.0★ (1,271) | Meridian, 18 mi away | 24/7 | — |
The 206 best HVAC contractors in Caldwell, 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 Caldwell
64/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 7,383 Google reviews.
- 4.8★ from 7,383 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 212 Evans St, Caldwell, ID 83605
Based in Meridian, 14 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 3,503 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,503 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 327 N Linder Rd, Meridian, ID 83642
Based in Nampa, 10 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 1,216 Google reviews, listed on Google as “Furnace repair service”.
- 4.9★ from 1,216 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4027 Summit Ln, Nampa, ID 83687
Based in Meridian, 16 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 1,803 Google reviews, listed on Google as “Air conditioning repair service”.
- 5.0★ from 1,803 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 737 N Ralstin St, Meridian, ID 83642
Based in Nampa, 9 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 991 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 991 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1020 1st St S, Nampa, ID 83651
Based in Meridian, 16 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 2,080 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,080 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 535 N Locust Grove Rd #170, Meridian, ID 83642
Based in Nampa, 11 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 993 Google reviews, listed on Google as “Heating contractor”.
- 4.8★ from 993 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5313 Airport Rd, Nampa, ID 83687
Based in Boise, 22 mi away
62/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 8,584 Google reviews, the most in Caldwell.
- 4.8★ from 8,584 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5100 W Emerald St, Boise, ID 83706
Based in Meridian, 18 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 1,271 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,271 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3920 E Lanark St STE 100, Meridian, ID 83642
Based in Boise, 21 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 3,841 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,841 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4980 E Bradley St, Boise, ID 83714
Based in Caldwell
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Meridian, 16 mi away
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 1,297 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 1,297 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 870 E Franklin Rd Suite 506, Meridian, ID 83642
Based in Garden City, 22 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 5,442 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 5,442 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 109 W 44th St, Garden City, ID 83714
#15 Fix It Frankie
Based in Nampa, 9 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 371 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 371 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3803 E Newby St Suite 130, Nampa, ID 83687
Based in Nampa, 5 mi away
61/100CR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 1,551 Google reviews.
- 5.0★ from 1,551 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3414 Black Butte Ct, Nampa, ID 83687
Based in Nampa, 8 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 184 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 184 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Boise, 22 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 2,336 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,336 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4684 W Chinden Blvd, Boise, ID 83714
Based in Meridian, 16 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 500 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 500 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2251 W Chinden Blvd, Meridian, ID 83646
Based in Nampa, 8 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 118 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 16096 N 20th St, Nampa, ID 83687
Based in Caldwell
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 320 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 320 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5312 Cleveland Blvd, Caldwell, ID 83607
Based in Caldwell
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 49 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Boise, 21 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 1,363 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,363 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7255 W Franklin Rd, Boise, ID 83709
Based in Boise, 21 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 1,129 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,129 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8243 W Westpark St, Boise, ID 83704
Based in Meridian, 15 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 302 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 302 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1404 N Main St Suite 204, Meridian, ID 83642
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 206 ranked HVAC contractors here; the rest are on their profiles.
Also serving Caldwell
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 |
|---|---|---|
| Accurate Airflow | 5.0★ (2) | 16 mi |
| Add comfort heating and air LLC | 5.0★ (2) | 11 mi |
| AIR TO AIR HEATING & COOLING LLC | 5.0★ (2) | In Caldwell |
| Airdoc Heating and Air Conditioning Inc. | 5.0★ (2) | 11 mi |
| Anaconda Heating and Air | 5.0★ (2) | In Caldwell |
| Applied Science Heating & Cooling | 4.3★ (6) | In Caldwell |
| BAYMAR MECHANICAL, LLC | 4.9★ (90) | 8 mi |
| Canyon County Refrigeration | 5.0★ (2) | 10 mi |
| Carter Comfort Systems | 5.0★ (2) | 11 mi |
| Dun-Rite Heating and Cooling | In Caldwell | |
| Econo Air LLC | 5.0★ (1) | In Caldwell |
| Honey Badger HVAC | 5.0★ (2) | In Caldwell |
| Integrity Heating & Air LLC | 4.5★ (85) | 10 mi |
| McMillan Mechanical LLC | 3.5★ (2) | In Caldwell |
| Nextech | In Caldwell | |
| Quality Pro Services Boise | 5.0★ (2) | 17 mi |
| Reliable Services Heating and Cooling | In Caldwell | |
| Right Now Plumbing | 4.9★ (434) | In Caldwell |
| Rocky Mountain Mechanical Inc | 4.8★ (250) | 17 mi |
| The Heating & Cooling Company | 5.0★ (2) | 9 mi |
How much do HVAC contractors cost in Caldwell?
National price ranges in USD, not adjusted for Caldwell. 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 |
How to check an HVAC contractor's license in Idaho
In Idaho, Idaho Division of Occupational and Professional Licenses licenses Heating, ventilation, air conditioning and refrigeration work.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
When to hire an HVAC contractor in Idaho
In Idaho, 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 Caldwell HVAC contractors
We scored 206 Caldwell 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 Caldwell 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 Caldwell: frequently asked questions
Who is the best HVAC contractor in Caldwell?
By CR Score, the highest-ranked HVAC contractor in Caldwell, ID is Diamond Heating, Cooling, Plumbing & Electric with a CR Score of 64/100. It has 4.9★ from 5,835 Google reviews. It is open 24/7. Right Now Heating, Air Conditioning & Plumbing (#2) and A-1 Heating, Air Conditioning & Electric (#3) follow. We ranked 206 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Caldwell?
ContractorsRanked ranks 206 HVAC contractors serving Caldwell, ID. 14 of them are based in Caldwell; 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 Caldwell are open 24/7?
90 ranked HVAC contractors in Caldwell post 24/7 hours. The highest-ranked are Diamond Heating, Cooling, Plumbing & Electric (#1), Right Now Heating, Air Conditioning & Plumbing (#2) and A-1 Heating, Air Conditioning & Electric (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Caldwell work on weekends?
134 of 206 ranked HVAC contractors post Saturday hours and 115 post Sunday hours. The highest-ranked open Saturdays are Diamond Heating, Cooling, Plumbing & Electric (#1), Right Now Heating, Air Conditioning & Plumbing (#2) and A-1 Heating, Air Conditioning & Electric (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in Idaho?
In Idaho, Idaho Division of Occupational and Professional Licenses handles licensing and covers Heating, ventilation, air conditioning and refrigeration work.
How much does ac replacement cost in Caldwell?
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 Caldwell. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Caldwell HVAC contractors have?
The median Google rating among 206 rated HVAC contractors in Caldwell is 4.9★, with a median of 36 reviews. Right Now Heating and Air Conditioning has the most, 8,584 reviews, and ranks #9. 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 Caldwell?
In Idaho, 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.
Update log for Caldwell
- October 2026: CR Scores recalculated for 206 hvac contractors serving Caldwell.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Caldwell pages
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Other trades in Caldwell
- Roofers in Caldwell199 ranked
- Plumbers in Caldwell245 ranked
- Electricians in Caldwell180 ranked
- General contractors in Caldwell256 ranked
- Painters in Caldwell110 ranked
- Landscapers in Caldwell150 ranked
- Handymen in Caldwell96 ranked
- Kitchen remodelers in Caldwell115 ranked
- Bathroom remodelers in Caldwell135 ranked
- Flooring contractors in Caldwell113 ranked
- Tile installers in Caldwell38 ranked
- Drywall contractors in Caldwell21 ranked
- Concrete contractors in Caldwell152 ranked
- Fence contractors in Caldwell80 ranked
- Deck builders in Caldwell58 ranked
- Siding contractors in Caldwell59 ranked
- Window installers in Caldwell100 ranked
- Gutter installers in Caldwell96 ranked
- Insulation contractors in Caldwell29 ranked
- Solar installers in Caldwell45 ranked
- Garage door repair companies in Caldwell43 ranked
- Foundation repair companies in Caldwell21 ranked
- Tree services in Caldwell120 ranked
- Masonry contractors in Caldwell50 ranked
- Water damage restoration companies in Caldwell123 ranked
- Home builders in Caldwell203 ranked
- Demolition contractors in Caldwell30 ranked
- All contractors in Caldwell