21 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Fairfield: Sandegrens Heating & Air Conditioning, CR Score 59/100; 4.8★ from 42 Google reviews; open 24/7.
Best for emergencies (open 24/7): A+ Services Plumbing, Heating and Air Conditioning, posts 24/7 hours; ranked #3 of 21.
Most-reviewed: Mitchell & Sons Heating & Cooling Inc., 67 Google reviews at 4.5★, the most of 21 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
21 Fairfield HVAC contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 4 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.5★ across 21 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sandegrens Heating & Air Conditioning | 59 | 4.8★ (42) | Ottumwa, 24 mi away | 24/7 | Overall |
| 2 | Tim's Heating Air Conditioning | 59 | 4.9★ (15) | Fairfield | Sun · Evenings | — |
| 3 | A+ Services Plumbing, Heating and Air Conditioning | 58 | 4.2★ (52) | Ottumwa, 24 mi away | 24/7 | Emergencies |
| 4 | Mitchell & Sons Heating & Cooling Inc. | 57 | 4.5★ (67) | Ottumwa, 24 mi away | — | Most reviews |
| 5 | Jagen Plumbing & Heating | 56 | 4.4★ (7) | Fairfield | — | — |
| 6 | Armstrong Heating & Air Conditioning Inc | 55 | 4.5★ (28) | Washington, 25 mi away | Sat · Sun | — |
| 7 | Hadley Heating & AC | 55 | 5.0★ (4) | Fairfield | — | — |
| 8 | Hindman/Person Heating & Air Conditioning | 54 | 4.5★ (63) | Ottumwa, 24 mi away | — | — |
| 9 | Taft Plumbing, Heating & Cooling | 54 | 4.2★ (29) | Mount Pleasant, 22 mi away | Sun · Evenings | — |
| 10 | Conner's Plumbing & Heating | 54 | 4.6★ (11) | Mount Pleasant, 21 mi away | Sat · Sun | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 42 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield
Ranked #2 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottumwa, 24 mi away
Ranked #3 because of its Google rating and trade focus: 4.2★ from 52 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottumwa, 24 mi away
Ranked #4 because of its Google rating and review volume: 4.5★ from 67 Google reviews, the most in Fairfield.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fairfield
Ranked #5 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Washington, 25 mi away
Ranked #6 because of its Google rating and trade focus: 4.5★ from 28 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield
Ranked #7 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottumwa, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.5★ from 63 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 22 mi away
Ranked #9 because of its Google rating and trade focus: 4.2★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 21 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.3★ from 18 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fairfield
Ranked #12 because of its Google rating and trade focus: 3.1★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottumwa, 23 mi away
Ranked #13 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 21 mi away
Ranked #14 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottumwa, 22 mi away
Ranked #15 because of its Google rating and trade focus: 4.5★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mount Pleasant, 20 mi away
Ranked #16 because of its Google rating and trade focus: 4.4★ from 14 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, 25 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottumwa, 24 mi away
Ranked #18 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Washington, 24 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottumwa, 23 mi away
Ranked #20 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield
Ranked #21 because of its Google rating and trade focus: 2.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
10 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 |
|---|---|---|
| C & K Plumbing & Heating | 5.0★ (1) | 25 mi |
| C & K Plumbing & Heating | 23 mi | |
| Freedom Foam Insulators | 4.6★ (16) | In Fairfield |
| John Robinson Plumbing & Heating | 5.0★ (1) | In Fairfield |
| Koda's Plumbing LLC | 5.0★ (7) | In Fairfield |
| Leslie’s Heating cooling & Electrical | 22 mi | |
| Pierson & Pierson Plumbing | 4.6★ (5) | In Fairfield |
| Premier Construction | 4.7★ (29) | In Fairfield |
| V & F Plumbing & Heating Co | In Fairfield | |
| Zager Plumbing-Heating & Bath | 5.0★ (1) | 25 mi |
National price ranges in USD, not adjusted for Fairfield. 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 Iowa, Iowa Plumbing and Mechanical Systems Board (Department of Inspections, Appeals and Licensing) licenses Mechanical (HVAC, refrigeration, hydronic) licenses.
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
In Iowa, 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 21 Fairfield 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 Fairfield 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 |