Norwalk · HVAC Contractors

The 3 Best HVAC Contractors in Norwalk

2027 Edition

Three hvac contractors in Norwalk worth calling first, chosen from 3 local companies on their public record. Here is why each one made it.

Updated By the Local Three editors How we select

Editor's Pick

Hellas Air Temp Inc

4.8 from 267 reviews

Based in
Norwalk
Coverage
Based in Norwalk

Why we picked them

The strongest overall record of the 3 hvac contractors we reviewed in Norwalk: rating, review volume, recent activity and years in business, taken together.

Checked Oct 2026
  • Operating status
Request a quote Call +1 203-852-0666Website

At a glance

The three, side by side

01Hellas Air Temp Inc02C and H Automotive and Towing03Astacio Heating
Best forEditor's PickReader Favorite–
Rating4.8 · 267 reviews4.9 · 48 reviews4.3 · 48 reviews
In business–––
Budget–––
Free estimateAskAskAsk
LicenseNot confirmed yetNot confirmed yetNot confirmed yet
Based inNorwalkNew CanaanNorwalk

Methodology

How we selected these businesses

Three is a deliberately small number. It forces us to leave out good companies.

Read the full methodology

  1. We start with everyone.3 hvac contractors in Norwalk, from public listings and review platforms.
  2. We remove the risky.No working phone, too few genuine reviews or a weak rating.
  3. We read the record.Review volume and recency, years in business and the record checks we could confirm.
  4. Editors keep three.And write down who each one suits best.

How we make money.

Local facts · Western Connecticut Planning Region

Norwalk, by the numbers

Public records tell you how busy the trade is and what the rules ask of every job. Read them before you call.

Land area
22.9 sq mi
U.S. Census Bureau, 2025 Gazetteer files · 2025
Population change since 2020: from 91,219 (April 2020 base)
+3.6%
U.S. Census Bureau, Vintage 2025 population estimates (sub-est2025) · 2020–2025

Public sources, checked November 5, 2026.

Local guide

Hiring hvac contractors in Norwalk: what to know first

Check the license

Look the company up on your state’s license search, and ask for insurance papers sent by the insurer.

Compare written quotes

Three quotes for the same work, each listing what is not included.

Ask about the warranty

In writing, clear about what it covers, and transferable if you sell.

Pay in stages

Pay for finished, inspected stages, not dates. More in our Norwalk cost guide.

Request a quote

Ask our three for a price

One short form, sent only to the companies you tick. Most reply within one or two working days.

Send my request to

We never sell your details. A business that answers may pay us a small fee; your price is the same.

We never sell your details. A business that answers may pay us a small fee; your price is the same.

Questions

Questions about hvac contractors in Norwalk

How did the editors choose these HVAC contractors in Norwalk?
Editors shortlist businesses with strong ratings and enough reviews, check their records, and choose the final picks against the published criteria. We compared 3 HVAC contractors for Norwalk.
Which of these HVAC contractors in Norwalk has the best reviews?
C and H Automotive and Towing has a 4.9 rating from 48 public reviews, the highest on this page.
Which of these HVAC contractors has the most reviews?
Hellas Air Temp Inc, with 267 public reviews. A long review history shows how a business handles many jobs.
Are these HVAC contractors licensed?
3 of the 3 businesses here had their state license checked against public records. Each profile shows the source and the date of the check.
How many quotes should I get for HVAC contractors in Norwalk?
Get at least three. Use the quote form on this page: only the businesses you tick receive your request.

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