24/7 Emergency Service
CT Lic. #S-1 391121
Trane, Lennox and Carrier air conditioning units side by side at a Connecticut home

Family-Owned & Operated Since 2001 · CT Lic. #S-1 391121

Total Home Comfort,
Year-Round.

Honest, dependable heating and cooling service for Shelton, Milford, Monroe and surrounding Connecticut communities — with upfront quotes, same-day repairs, and 24/7 emergency response.

24/7 Emergency Service 3,500+ Satisfied Customers Free, No-Obligation Estimates
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BBB Accredited Business

BBB Accredited

A+ Standard of Trust

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Yelp Reviews

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Homes Served

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Our Services

Complete Heating & Cooling Solutions

From emergency repairs to brand-new high-efficiency installations, our EPA-certified, factory-trained technicians handle it all — residential and commercial.

Central air conditioning condenser unit beside a residential home

Air Conditioning

Repair, maintenance, and installation of central air systems and ductless mini-split AC units.

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Residential furnace and boiler heating system in a basement utility room

Heating Systems

Expert repair and installation of hot water boilers, hot air furnaces, and heat pumps.

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Professional air duct cleaning of residential ductwork

Air Quality & Ductwork

Professional duct cleaning, duct sealing, and indoor air quality solutions for a healthier home.

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HVAC technicians installing a new high-efficiency system

New System Installation

Consultation and installation of new, high-efficiency HVAC systems tailored to your home and budget.

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Technician performing a seasonal HVAC tune-up with pressure gauges

Preventive Maintenance

Seasonal tune-up plans that boost energy efficiency and extend the life of your equipment.

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Ductless mini-split air conditioning unit mounted on an interior wall

24/7 Emergency Service

Heating or cooling emergency? We answer around the clock with fast, same-day repair for most issues.

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Specials & Offers

Comfort That Fits Your Budget

We respond to every inquiry within 24 hours — and every job starts with an honest, upfront quote.

Current Offer

FREE

No-Obligation Estimate

On any new system installation or replacement — honest, upfront pricing with zero pressure.

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Current Offer

Seasonal

Tune-Up Special

Keep your system running at peak efficiency with a seasonal maintenance visit before the rush.

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Current Offer

24/7

Emergency Response

No heat in January? No AC in July? We respond around the clock — most repairs done same-day.

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How It Works

Our Simple 4-Step Process

No surprises, no pressure — just straightforward service from first call to final walkthrough.

1

Initial Contact

Call, email, or request an instant quote online — we respond to every inquiry within 24 hours.

2

Expert Diagnosis

An on-site technician diagnoses the issue and gives you an upfront, honest quote before any work begins.

3

Professional Work

Repairs and installations done right by EPA-certified, factory-trained pros — most repairs same-day.

4

Long-Term Comfort

Every job is backed by warranties, so your home stays comfortable season after season.

Mark Corna Heating and Cooling team standing in front of the branded company service van

42+ Years

In the HVAC Trade

Why Choose Us

The Name Shelton Trusts for Home Comfort

Licensed & Fully Insured

Master Contractor License S-1 391121 with $2 million in liability coverage for total peace of mind.

EPA-Certified Technicians

Factory-trained pros who diagnose it right the first time and treat your home with respect.

Family-Owned Since 2001

A local Shelton business built on honesty, word-of-mouth referrals, and long-term relationships.

Upfront, Honest Quoting

You approve the price before any work begins — no hidden fees, no surprise charges. Ever.

More About Us

Brands We Trust

We proudly install & service the industry's most reliable HVAC systems

Lennox heating and air conditioning systems logo
Carrier HVAC systems logo
Trane heating and cooling systems logo

We service all makes and models — even if your brand isn't listed here.

Service Area

Proudly Serving the Greater Shelton Area

Based in Shelton, CT, we provide fast, friendly heating and cooling service throughout the lower Naugatuck Valley and Fairfield County.

Shelton, CTMilford, CTMonroe, CTTrumbull, CTStratford, CTDerby, CTAnsonia, CTSeymour, CT
Comfortable, cozy modern home interior with smart thermostat

Ready for Total Home Comfort?

Get a fast, no-obligation quote in minutes — or talk to a real person right now. We respond to every inquiry within 24 hours.