PicksByTown
New Haven, Connecticut · HVAC Contractors

The 6 best hvac contractors in New Haven, CT

Ranked on public signals: website quality, contactability, and service fit. Updated October 2026. No paid placements, and no customer reviews are collected or shown; every business was found in public listings or added by its owner, and all are scored the same way.

6 firms ranked Updated October 2026
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New Haven is served by local service businesses indexed below. HVAC contractors install, maintain, and repair heating, ventilation, and air conditioning systems for homes and businesses.

We indexed 6 hvac contractors serving New Haven. Each firm is scored on a consistent set of data signals: website health, HTTPS security, mobile-friendliness, online contactability, and alignment with the hvac contractors niche. The ranking is fixed by data, not by who pays the most to appear at the top.

Of the 6 hvac contractors listed for New Haven, 6 run a secure (HTTPS) website, 6 publish a phone number and 4 have their business name confirmed on their own website.

If you live in New Haven, CT and need a hvac contractor, this page is a starting point, not an endorsement. Call two or three from the list, get written estimates, and compare. The numbers next to each business are a filter, not a decision.

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How we rank hvac contractors in New Haven

Each business is scored on signals we can verify from public data: a live, secure (HTTPS) website, mobile-friendliness, a published phone number and website, and fit with the hvac contractors category. We do not collect or display customer reviews, and we do not accept payment for placement. Businesses can claim their listing to correct contact details, but the rank is fixed by the data. Owners can claim a listing for a Verified badge and a direct link; sponsors appear only in labeled blocks outside the numbered list. Neither changes rank.

Local conditions

Hiring hvac contractors in New Haven: what the local data says

  • 69% of homes in New Haven were built before 1970 and the median home dates to 1950. Older houses often have ductwork or boilers that were sized decades ago, so a load calculation matters more than a like-for-like replacement quote.
  • New Haven averages about 3 days a year at 90°F or hotter and 87 nights at or below freezing, so both cooling and heating get real use. Booking maintenance in spring and fall avoids the peak repair weeks.

Sources: US Census Bureau, ACS 2024 1-year estimates for New Haven, CT, via Census Reporter; Open-Meteo historical weather archive, 2015-2024 averages.

This market

HVAC Contractors around New Haven: what this page found

1 of the 6 hvac contractors on this page is listed under New Haven itself; the other 5 serve New Haven from Bridgeport and Waterbury.

Nearby directories for the same trade: Bridgeport (4 ranked), Waterbury (3 ranked), New Britain (3 ranked).

Common questions

HVAC Contractors in New Haven: quick answers

How are the hvac contractors in New Haven ranked?

Each listing is scored on public signals we can check ourselves: whether the website is live and secure (HTTPS), whether it works on a phone, whether a phone number and website are published, and how closely the business matches the hvac contractors category. We do not collect customer reviews, so no star ratings or review counts appear here, and no business pays for placement.

How do I pick the best hvac contractor in New Haven?

Use this list to shortlist two or three hvac contractors, then read their Google reviews yourself, confirm license and insurance, and get written estimates before committing. The score here is a filter, not a verdict.

How do I verify a hvac contractor's license in Connecticut?

Licensing in Connecticut runs through the Connecticut Department of Consumer Protection. Before hiring anyone in New Haven, ask for their Home Improvement Contractor (HIC) registration number and verify it in the DCP eLicense lookup before signing; electricians, plumbers and HVAC technicians hold separate DCP trade licenses. Also confirm current liability insurance, and get the license number in writing on the estimate.

Which hvac contractors serve New Haven?

This page lists Telyn, Celco Heating and Air Conditioning, CTS Heating & Cooling, M & M Heating & Cooling, LLC, Advanced Duct Solutions and Fairfield HVAC Pros, in ranked order. All of them publish a phone number, so you can call directly.

When is the best time to book hvac contractors in New Haven?

Going by New Haven's own weather records (typical last spring frost around April 5, first fall frost around November 12), the usual windows are late winter, before about April 5, from about April 5 into early summer or early fall, before the first frost around November 12. Booking a few weeks ahead of those windows beats the rush.

Read our guide
The HVAC maintenance schedule that prevents 90% of breakdowns
Also useful

Directories & guides for hvac contractors in New Haven

Third-party roundups and multi-business directories covering this area. Not curated by us; included for reference.

Couple Runs 6 MINI SPLIT unit | Ductless HVAC in new build - YouTube Mini Split, or Ductless HVAC systems are becoming more and more popular for their efficiency and…

What to look for when hiring a hvac contractor in New Haven

  • Ask for the heating, piping and cooling contractor license (S-1, or D-1 for air conditioning). In Connecticut, HVAC contractors need it from the Connecticut Department of Consumer Protection. Verify it at the official Connecticut license lookup before signing. Many Connecticut HVAC licenses are limited in scope, so confirm the license covers your specific equipment.
  • Written estimates. Any hvac contractor who won't put the scope in writing is a red flag.
  • Review quality, not just volume. Read the 3-star reviews, they're usually the most honest.
  • Local references. A hvac contractor who's done work in New Haven will understand local housing stock better than a regional chain.

Popular hvac contractors neighborhoods in New Haven

The hvac contractors on this page serve all of New Haven and surrounding areas. Response times and service radius vary, call ahead for estimates.

New Haven HVAC Contractors

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