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:
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Your furnace or boiler is more than 15–20 years old
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Rising energy bills despite regular maintenance
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Uneven heating or cold spots in your home
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Frequent breakdowns or costly repairs
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Strange noises, odors, or reduced air quality
Our Heating Replacement Services
We provide expert installation of energy-efficient heating systems, including:
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Gas and oil furnaces
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Boilers
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Heat pumps
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Ductless mini-splits
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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?
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Local Experts – Trusted HVAC company proudly serving Connecticut families
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Licensed & Insured – Fully certified for furnace and boiler replacements
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Energy Efficiency – We install systems that meet or exceed ENERGY STAR® standards
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Financing Options – Flexible plans available to fit your budget
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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.
I wanted to take a moment to thank the office staff, Beth and Toni whose real voices answered the phone versus hearing recorded voice prompts and then listening to music to wait for som— Charlene R
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Fast service. Called on a dead furnace and new furnace installed SAME DAY!— George Habrecht
What a great company is A&S Nathan The technician was knowledgeable in his work. Very efficient and quickly gave me heat in upstairs bathroom!! He was polite efficient and knowledge— Sandra Mirsky
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Great service prompt return call from the owner him self quality work— James Rafferty
Chose them to replace my 25 year old oil boiler and couldn’t be happier. Worked fast, cleaned up, very responsive and helpful.— Niall Begley
What an awesome company to deal with. My technicians Craig and Larry were an absolute pleasure to have in my home servicing my boiler. I would recommend them to anyone looking for a qua— Jim Dummitt
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Heather is so knowledgeable and easy to work with!— Evelisse Lopez
I’ve used A&S for many years. Fast, professional and reasonable! Available for emergencies (think New Year’s Eve!). I frequently recommend them to friends, family and neighbors!— Meg Zuklie
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Was having issues with my heating on a Friday afternoon, called A&S and they sent someone over right away to take a look. They had my heat working within 30 min. I recommend them to— Peter Vicente
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Great installation and service experience.— Shannon Bowley
We had our AC system replaced this year. The A&S team was on time, professional and polite. They got the job done within the timeframe they estimated, they shared honest feedback on— Deb Ferreira
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Big shout out to A&S! Our fujitsu mini split was blowing warm air, called several shops and got the run around or no call backs. A&S was able to send a tech out the next day, TH— M Carrello
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