89/100CR Score
Ranked #1 because of its Google rating and availability: 4.7★ from 32 Google reviews, open 24/7.
- 4.7★ from 32 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 41 White St, Fredonia, NY 14063
Best HVAC Contractors in Dunkirk, NY (2026)
7 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Dunkirk: Fredonia Heating & Plumbing, CR Score 89/100; 4.7★ from 32 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Millennium Mechanical, Inc, posts 24/7 hours; ranked #3 of 7.
- 6
Most-reviewed: Casale Plumbing, Heating & Air, 57 Google reviews at 4.0★, the most of 7 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
7 Dunkirk HVAC contractors are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.6★ across 7 rated businesses.
Top 7 HVAC contractors in Dunkirk at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Fredonia Heating & Plumbing | 89 | 4.7★ (32) | Fredonia, 3 mi away | 24/7 | Overall |
| 2 | Vecchio Brothers Heating & Cooling | 83 | 4.7★ (31) | Dunkirk | Sat · Evenings | — |
| 3 | Millennium Mechanical, Inc | 82 | 2.3★ (7) | Dunkirk | 24/7 | Emergencies |
| 4 | Gugino Plumbing Heating & Air Conditioning | 81 | 4.6★ (46) | Fredonia, 3 mi away | — | — |
| 5 | A1 Southern Tier Heating, Cooling & Plumbing | 79 | 3.2★ (6) | Jamestown, 18 mi away | 24/7 | — |
| 6 | Casale Plumbing, Heating & Air | 79 | 4.0★ (57) | Dunkirk | — | Most reviews |
| 7 | D & F Refrigeration & Air Conditioning | 76 | 5.0★ (4) | Fredonia, 2 mi away | 24/7 | — |
The 7 best HVAC contractors in Dunkirk, ranked
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.
Based in Dunkirk
83/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 31 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 31 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat 7 AM–12 PM · Sun closed
- Address
- 3475 US-20, Dunkirk, NY 14048
Based in Dunkirk
82/100CR ScoreRanked #3 because of its Google rating and availability: 2.3★ from 7 Google reviews, open 24/7.
- 2.3★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Fredonia, 3 mi away
81/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.6★ from 46 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 46 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 160 Cushing St, Fredonia, NY 14063
Based in Jamestown, 18 mi away
79/100CR ScoreRanked #5 because of its Google rating and availability: 3.2★ from 6 Google reviews, open 24/7.
- 3.2★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Dunkirk
79/100CR ScoreRanked #6 because of its Google rating and review volume: 4.0★ from 57 Google reviews, the most Google reviews on this list (57).
- 4.0★ from 57 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 829 Brigham Rd, Dunkirk, NY 14048
Based in Fredonia, 2 mi away
76/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 130 Newton St, Fredonia, NY 14063
How much do HVAC contractors cost in Dunkirk?
National price ranges in USD, not adjusted for Dunkirk. 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 New York
In New York, 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 Dunkirk HVAC contractors
We scored 7 Dunkirk 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 Dunkirk 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 |
HVAC contractors in Dunkirk: frequently asked questions
Who is the best HVAC contractor in Dunkirk?
By CR Score, the highest-ranked HVAC contractor in Dunkirk, NY is Fredonia Heating & Plumbing with a CR Score of 89/100. It has 4.7★ from 32 Google reviews. It is open 24/7. Vecchio Brothers Heating & Cooling (#2) and Millennium Mechanical, Inc (#3) follow. We ranked 7 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Dunkirk?
ContractorsRanked ranks 7 HVAC contractors serving Dunkirk, NY. 3 of them are based in Dunkirk; the rest serve it from nearby towns. Counts are as of October 2026.
Which HVAC contractors in Dunkirk are open 24/7?
4 ranked HVAC contractors in Dunkirk post 24/7 hours. The highest-ranked are Fredonia Heating & Plumbing (#1), Millennium Mechanical, Inc (#3) and A1 Southern Tier Heating, Cooling & Plumbing (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Dunkirk work on weekends?
4 of 7 ranked HVAC contractors post Saturday hours and 3 post Sunday hours. The highest-ranked open Saturdays are Fredonia Heating & Plumbing (#1), Vecchio Brothers Heating & Cooling (#2) and Millennium Mechanical, Inc (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Dunkirk?
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 Dunkirk. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Dunkirk HVAC contractors have?
The median Google rating among 7 rated HVAC contractors in Dunkirk is 4.6★, with a median of 31 reviews. Casale Plumbing, Heating & Air has the most, 57 reviews, and ranks #6. 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 Dunkirk?
In New York, 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Dunkirk
- October 2026: CR Scores recalculated for 7 hvac contractors serving Dunkirk.
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