Professional Heating Installation in Connecticut

Ready for a new heating system? At A&S Nathan Heating & Cooling LLC, we specialize in installing furnaces, boilers, heat pumps, and ductless systems that keep your home comfortable and efficient—no matter how cold it gets outside. Whether you’re replacing an outdated unit, upgrading for better efficiency, or switching from oil to gas, our licensed team will get the job done right.

Why Choose Us for Heating Installation?

Expert System Sizing – We’ll recommend the best system for your home’s size and heating needs.
Energy-Efficient Options – Save money with high-efficiency models and modern technology.
Oil-to-Gas Conversions – Make the switch to a cleaner, more cost-effective fuel source.
Heat Pump & Ductless Solutions – Flexible options for all home types and comfort preferences.
Licensed, Insured & Trusted Locally – Serving Connecticut families with reliable HVAC service.
Financing Available – Affordable monthly payments through Synchrony.

Our Heating Installation Services

Furnace installation (gas & oil)
Boiler installation
Heat pump installation
Ductless heating systems
Thermostat upgrades & zoning
Oil-to-gas conversion services

Service Areas

We provide heating installation throughout Connecticut, including:
Fairfield • Stratford • Trumbull • Milford • Shelton • Monroe • Newtown • Ansonia • Derby • Orange • Seymour • Beacon Falls • Bethany • Oxford—and surrounding areas.

Upgrade Your Home’s Comfort Today

Don’t wait until your old system fails—plan ahead with a professional heating installation from A&S Nathan Heating & Cooling LLC. Call (203) 555-1234 or click Book Appointment to schedule your free estimate today.

Book an Appointment

Dan the Technician was extremely efficient. So much so that in the future I will request him. Very meticulous , informative , pleasant, and resolved our issue.

— Joe Slane

We had several things done/installed in one day. Ian was fantastic coordinating the entire project. Then he took time to explain everything to us. Heather in the office is so accommodat
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— linda hooper

We’ve been customers of A&S Nathan for some time so the decision to use them was easy when it came to replace our boiler. The process was easy and the installation was quick and s
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— Briget Stronge

If oil furnace abuse was a crime, I’d be writing this from Sing Sing. I’ve neglected my Weil oil furnace for a few years and it finally had enough of my abuse.

— Walt Bradley

We had several installation and maintenance projects with A&S Nathan. Everytime they were on time, friendly, competent and efficient. Bernie and Liz

— bernie Keppler

We purchased and had a new Water Heater installed. I can’t say enough great things about he company. They were on-time, did the job well, and at a better cost than others. I would
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— Jason Martinez

Paul & Wes did a great job! I could see that they had a plan in place and they working accordingly. The water heater selection was a great choice; and one the company stands behind
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— Stephanie Fians

My wife and I went through many hvac contractors before finding Jake and his team. We are so happy to have honest and efficient technicians to service our equipment year round.

— Stephen

Needed the furnace serviced before the start of cold season and customer service was great. Called and spoke with a nice woman who explained their pricing and deals (without being pushy
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— Theresa Hanson

My AC wasn’t working and I called my company and they said it would be a month to for someone to come out and look at it. I called A&S Nathan and they came the same day! Scott sav
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— Tom Feige

Called several companies, they were the only ones who were available for same day service. They had my AC unite up and running quickly. Excellent service, will definitely call them agai
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— Lukasz Glinka