16 Commercial HVAC Contractors in Norwalk, CT

4.0 avg rating
1,089 total reviews3 offer 24/7 service
Need emergency service? 12 HVAC providers in Norwalk offer 24/7 availability

Get Free Commercial HVAC Quotes in Norwalk, CT

Not ready to call? Tell us what you need and we'll connect you with top-rated contractors.

Free, no obligation. We'll show you top contractors you can contact directly.

Top-Rated Commercial HVAC Contractors in Norwalk

#1

Hellas Air Temp Inc

4.8(569 reviews)
Highly Rated

Adam Masterson's 5-star review praises their same-day response capability and Carrier system installation, while Miguel R's 1-star feedback documents a wiring…

52 Connecticut Ave, Norwalk, CT 06850
#2

Climate Care, LLC

4.5(172 reviews)
24/7

Five-star ratings dominate the review portfolio, with 4 out of 4 sampled reviews awarding maximum scores. Emergency same-day service appears in multiple…

318 Strawberry Hill Ave, Norwalk, CT 06851
#3

SERVPRO of Norwalk/Wilton

4.7(68 reviews)
24/7

Six of eight detailed reviews award 5 stars, with the remaining split between 4 and 2 stars. Technicians Dylan and Roberto appear in five positive reviews,…

173 Main St, Norwalk, CT 06851

All Commercial HVAC Contractors (16 total)

Anytime Appliance Repair Service LLC

4.2(57)

Twelve of fifteen sampled reviews award five stars, with customers specifically praising technician honesty…

24 1/2 Knapp St, Norwalk, CT 06854

Temp Assure Heating Air Conditioning & Refrigeration LLC

4.8(33)

All eight sampled reviews award five stars, with emergency response mentioned in four reviews. Jaime is named…

Amazon Air Duct & Dryer Vent Cleaning Norwalk

4.9(30)

All five-star reviews mention either thorough dust removal or allergy relief outcomes, and Dominic Alec…

30 Main St, Norwalk, CT 06851

Reo Appliances Inc

3.9(65)

Eight recent reviews award 5 stars, with each narrative naming a specific technician, Jose, Dylan, Mike, Joe,…

233 East Ave, Norwalk, CT 06855

Brothers Fix It

4.7(30)
24/7

All five reviewers awarded 5 stars and specifically mention technician Hilton by name, praising his…

101 Newtown Ave, Norwalk, CT 06851

AirPlus Inc

4.2(21)

All 21 reviewers awarded 5 stars, with ten specifically mentioning same-day or same-weekend response times.…

78 Fort Point St, Norwalk, CT 06855

Varsity Zone HVAC of Norwalk

5.0(12)

Eight reviewers awarded perfect 5-star ratings, with Mark, Theo, and Jose named personally across five of…

16 Commerce St #3, Norwalk, CT 06850

Barrios Electric

4.7(13)

13 verified reviewers collectively award Barrios Electric a 4.7-star rating, with 5 customers specifically…

56 Lockwood Ln, Norwalk, CT 06851

Lighthouse Heating & Cooling

5.0(9)

All six client reviews award five stars, with clients consistently praising technical knowledge, timeliness,…

25 Van Zant St Ste 1a-1, Norwalk, CT 06855

GT Electric

5.0(5)
20 Brookfield St, Norwalk, CT 06851

R.E. Michel Company

4.2(5)

Of 5 reviews, 1 customers noted inventory concerns while 4 reviews reflect generally positive experiences.…

23 Perry Ave, Norwalk, CT 06850

JDL Air Systems LLC

0.0
3 Earl St, Norwalk, CT 06854

Indoor Comfort Training Center

0.0

No homeowner reviews are available for this listing. The facility operates as an HVAC training center rather…

25 Van Zant St, Norwalk, CT 06855

Commercial HVAC Costs in Norwalk

Commercial system pricing in Norwalk. Actual costs vary significantly by building size and system type. Request a site-specific quote.

ServiceLowAverageHigh
Annual maintenance (per rooftop unit)
Quarterly inspections
$550$1,100$2,200
Annual contract (small business, < 5K sqft)
$1,100$2,750$5,500
Annual contract (mid-size, 5K-25K sqft)
$3,850$7,150$11,000
Basic rooftop unit replacement
$7,150$11,000$16,500
Small business full system (< 5K sqft)
$8,800$17,600$27,500
Mid-size building (5K-25K sqft)
$27,500$55,000$88,000
Operating cost (per sqft annually)
Utility + maintenance
$2$4$7

Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

Commercial HVAC in Norwalk, CT: What to Expect

Norwalk’s coastal setting on Long Island Sound moderates extremes but still creates real demand for year-round systems: summers climb to mid-80s with sticky 67% humidity and winters dip to mid-20s, pushing commercial ventilation, dehumidification and heating loads. With 16 contractors serving the area, an average 4.0 rating and three firms offering 24/7 coverage, commercial-hvac Norwalk needs a balance of reliability and moisture control.

Local pricing data is inconsistent in public listings, so businesses should budget based on system capacity, ductwork complexity and energy-efficiency upgrades rather than a single figure. Major cost drivers include rooftop unit replacement, chilled-water conversion and comprehensive controls integration. Connecticut requires HVAC contractors to hold a Heating, Cooling and Piping (HPC) Contractor License — Class 1 Master HPC Contractor — through the Department of Consumer Protection, so verify licensing before contracting.

Customer highlights are sparse in the dataset, but market signals point to recurring priorities: timely preventive maintenance, quick emergency response and expertise with coastal humidity management. When hiring, ask about service agreements, documented energy savings from past projects, and aftercare response times—especially if 24/7 coverage or seasonal load testing is critical for minimizing downtime and protecting sensitive commercial spaces.

Frequently Asked Questions

Commercial HVAC in Norwalk varies widely by building size. Annual maintenance contracts run $1,000-$10,000+ depending on unit count and service frequency. Rooftop unit replacement starts around $6,500-$15,000, small business systems (<5K sqft) run $8,000-$25,000, and mid-size buildings cost $25,000-$80,000 installed.

All HVAC Contractors in Norwalk, CT

Complete directory of 66 contractors — browse alphabetically

A–Z