39 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Delphos: Quality Mechanical Services, CR Score 85/100; 4.1★ from 168 Google reviews; open 24/7.
Best for emergencies (open 24/7): American Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 39.
Most-reviewed: Brown's Heating Cooling Plumbing & Electrical, LLC, 107 Google reviews at 3.9★, the most of 39 ranked after Quality Mechanical Services; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
39 Delphos HVAC contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 6 open Saturdays and 6 open Sundays, based on posted hours. The median Google rating is 4.4★ across 39 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Quality Mechanical Services | 85 | 4.1★ (168) | Lima, 16 mi away | 24/7 | Overall |
| 2 | American Heating & Air Conditioning | 85 | 4.4★ (73) | Lima, 15 mi away | 24/7 | Emergencies |
| 3 | Thermo King Midwest | 81 | 4.9★ (68) | Delphos | — | — |
| 4 | Reliable Plumbing & Heating | 79 | 3.4★ (32) | Delphos | — | — |
| 5 | CREPS Plumbing Heating & Air Conditioning LLC | 78 | 3.2★ (6) | Lima, 12 mi away | 24/7 | — |
| 6 | Midwest Services | 76 | 5.0★ (3) | Celina, 18 mi away | 24/7 | — |
| 7 | Peterson Mechanical Repair LLC | 76 | 5.0★ (11) | Bright, 19 mi away | Sat · Sun · Evenings | — |
| 8 | Alltek Plumbing Heating and Air Conditioning | 75 | 4.5★ (27) | Delphos | — | — |
| 9 | Ayers Mechanical Group | 75 | 4.5★ (70) | Van Wert, 13 mi away | — | — |
| 10 | Doug's Plumbing & Heating | 75 | 4.5★ (66) | Lima, 8 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 review volume: 4.1★ from 168 Google reviews, the most Google reviews on this list (168).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 15 mi away
Ranked #2 because of its Google rating and availability: 4.4★ from 73 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Delphos
Ranked #3 because of its Google rating and trade focus: 4.9★ from 68 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Delphos
Ranked #4 because of its Google rating and trade focus: 3.4★ from 32 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Lima, 12 mi away
Ranked #5 because of its Google rating and availability: 3.2★ from 6 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Celina, 18 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bright, 19 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Delphos
Ranked #8 because of its Google rating and trade focus: 4.5★ from 27 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Van Wert, 13 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 70 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 8 mi away
Ranked #10 because of its Google rating and trade focus: 4.5★ from 66 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 13 mi away
Ranked #11 because of its Google rating and trade focus: 4.5★ from 50 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 42 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 13 mi away
Ranked #13 because of its Google rating and trade focus: 3.9★ from 107 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Celina, 24 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 47 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Celina, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 37 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Van Wert, 12 mi away
Ranked #16 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Delphos
Ranked #17 because of its Google rating and review volume: 4.0★ from 43 Google reviews, 43 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saint Marys, 21 mi away
Ranked #18 because of its Google rating and trade focus: 4.1★ from 74 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 13 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Lima, 14 mi away
Ranked #20 because of its Google rating and trade focus: 3.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Wapakoneta, 21 mi away
Ranked #21 because of its Google rating and trade focus: 4.1★ from 59 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Wapakoneta, 20 mi away
Ranked #22 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 10 mi away
Ranked #23 because of its Google rating and trade focus: 4.4★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 17 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lima, 11 mi away
Ranked #25 because of its Google rating and trade focus: 4.4★ from 8 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 #39, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Perry's Heating and Air Conditioning | 69 | 4.7★ (6) | 10 mi |
| 27 | Houston Electric Plumbing Heating & Air Conditioning | 69 | 4.5★ (16) | 20 mi |
| 28 | American Heating and Plumbing LLC | 68 | 4.8★ (23) | 24 mi |
| 29 | Lippincott Plumbing, Heating & Electrical, Inc. | 68 | 3.3★ (34) | 15 mi |
| 30 | Quality Plumbing & Heating | 68 | 4.2★ (16) | 22 mi |
| 31 | Dotson Plumbing, Heating & A/C | 67 | 3.9★ (21) | 17 mi |
| 32 | Washam Plumbing Heating & Air Conditioning, INC. | 67 | 3.7★ (30) | 10 mi |
| 33 | Wollenhaupt | 67 | 5.0★ (4) | 11 mi |
| 34 | Advanced Mechanical Plus Inc | 65 | 2.5★ (8) | 14 mi |
| 35 | Schnippel Electric Plumbing & Heating | 65 | 4.9★ (7) | 21 mi |
| 36 | CW Service | 64 | 4.0★ (5) | 23 mi |
| 37 | Fischer Plumbing & Heating | 64 | 2.5★ (12) | In Delphos |
| 38 | Trents General Contracting and Hvac Services | 64 | 4.9★ (7) | 13 mi |
| 39 | Hoffman Plumbing & Heating, ltd. | 63 | 4.0★ (8) | 13 mi |
14 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 |
|---|---|---|
| All Temp Refrigeration | 5.0★ (2) | In Delphos |
| Carrier Heating & Cooling | 3.0★ (2) | 16 mi |
| Cleaves Mechanical Services | 5.0★ (2) | 12 mi |
| Dean Howell Plumbing Heating & AC | 24 mi | |
| Eisert Plumbing & Heating | 4.0★ (1) | 22 mi |
| GEM Energy | 15 mi | |
| Holmes Improvements | 16 mi | |
| Houston Elec. Plb. Htg, inc. | 5.0★ (1) | 21 mi |
| Masters Heating & Cooling | 14 mi | |
| MCL Chimney repairs & Chimney inspection Wapakoneta, OH | 20 mi | |
| Rm Heating & Air Conditioning | 1.0★ (1) | 21 mi |
| Sears Heating and Air Conditioning | 20 mi | |
| Smartway AC & Heating | 14 mi | |
| TDK Leasing | 10 mi |
National price ranges in USD, not adjusted for Delphos. 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 Ohio, Ohio Construction Industry Licensing Board licenses Commercial HVAC and refrigeration contractor 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 Ohio, 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 39 Delphos 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 Delphos 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 |