Heating Replacement

When the temperatures drop, you need a heating system you can rely on. At A&S Nathan Heating & Cooling LLC, we specialize in professional heating replacement services that keep your home warm, efficient, and safe. Serving homeowners across Fairfield County, New Haven County, and surrounding Connecticut towns, our licensed technicians deliver dependable solutions tailored to your home and budget.

Signs It’s Time to Replace Your Heating System

Not sure if repair is enough? Replacement may be the smarter investment if your system shows these signs:

Your furnace or boiler is more than 15–20 years old
Rising energy bills despite regular maintenance
Uneven heating or cold spots in your home
Frequent breakdowns or costly repairs
Strange noises, odors, or reduced air quality

Our Heating Replacement Services

We provide expert installation of energy-efficient heating systems, including:

Gas and oil furnaces
Boilers
Heat pumps
Ductless mini-splits
High-efficiency systems designed to lower utility costs

Every installation includes professional sizing, removal of old equipment, and a clean, safe setup so your home is ready for comfort right away.

Why Choose A&S Nathan Heating & Cooling LLC?

Local Experts – Trusted HVAC company proudly serving Connecticut families
Licensed & Insured – Fully certified for furnace and boiler replacements
Energy Efficiency – We install systems that meet or exceed ENERGY STAR® standards
Financing Options – Flexible plans available to fit your budget
24/7 Emergency Service – We’re here when you need us most

Serving Your Town

We proudly offer heating replacement in towns across Connecticut, including Bridgeport, Stratford, Milford, New Haven, Trumbull, Shelton, Fairfield, Hamden, Waterbury, and more.

Book Your Heating System Replacement Today

Don’t wait until your system fails during the coldest day of the year. Schedule a consultation with our team and discover the best replacement options for your home.

Book an Appointment

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

I highly highly recommend them. Very professional. Calls back right away. Sets up meeting. Email and text sent. Then another email and text sent to remind you of the meeting and then a
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— Linda Dzurenda

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

Very satisfied with installation and service.

— starry night

I used A&S Nathan to repair my a/c unit. They were there in what felt like a couple of minutes. Mark D was the guy that came out, he repaired my a/c without any problems.

— Chris Turner

I am completely satisfied with the way your company conducts its business. I am in the building industry as well and I know how important customer service is as well as the quality of y
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— Sue Marinko

I have been a customer of A&S Nathan for several years. Scott always does a great job with my annual oil furnace tune up. Scott always goes above and beyond and patiently answers al
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— Alessandro Lopes

Great service prompt return call from the owner him self quality work

— James Rafferty

Great company. Would highly recommend! Wonderful people from the ladies in the office to the installers and servicemen to the owner.

— libby dicicco

A&S Nathan replaced my boiler and hot water tank yesterday and I couldn’t be happier. They were very professional and courteous and I would highly recommend them to anyone!

— Susan Darmiento