Serving New Haven & Fairfield Counties
24/7 Emergency Service
Fully Licensed & Insured
Free Estimates & Financing Options
Est. 2000
Trusted HVAC Repair & Installation Experts
Serving New Haven & Fairfield Counties
24/7 Emergency Service
Fully Licensed & Insured
Free Estimates & Financing Options
Est. 2000
Oil. Gas. Propane. Heat Pumps. Air Conditioning.
We Service And Install It All!
A&S Nathan Heating & Cooling LLC is a family-owned business serving New Haven and Fairfield Counties for over 25 years. We specialize in HVAC service and installation, with a commitment to quality, reliability, and 24/7 emergency service. Free estimates and financing options available—your comfort is our priority.
SERVICES
Heating
Ensure your home stays warm and cozy with our expert heating services, providing reliable solutions for all your needs.
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Air Conditioning
Stay cool and efficient with our expert air conditioning services, ensuring comfort and savings all season long.
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Water Heaters
Enjoy consistent hot water with expert water heater services—heat pump, tank, and on-demand systems tailored to your home.
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Indoor Air Quality
Breathe easier with our indoor air quality services, designed to create a healthier and cleaner home environment.
Learn MoreWhy Choose A&S Nathan Heating and Cooling LLC?
Choosing A&S Nathan Heating & Cooling LLC means partnering with a team known for reliability, expertise, and trusted service throughout New Haven and Fairfield Counties. Established in 2000, we bring 25+ years of experience delivering quality HVAC service and installation backed by deep industry knowledge. We’re also an approved EnergizeCT contractor and part of the EnergizeCT Heat Pump Installer Network, helping homeowners take advantage of eligible heat-pump rebates and incentives.
As a local, family-owned business, we pride ourselves on personalized care and a strong connection to the community. Our HomeAdvisor Pro certification reflects our professionalism, and we’re honored to be the 2024 Pulse Award winner for Excellence in Customer Satisfaction. Trust A&S Nathan for dependable comfort—every season, every service.
- Service Contracts
- HVAC Service & Installation
- Installation, Repair, & Service—all fuel types
- Estimates Received Within 24 Hours
- Mitsubishi Preferred Diamond Dealer
- Pulse Award Winner
Ways To Save
At A&S Nathan Heating & Cooling LLC, we offer smart ways to make comfort more affordable. Save with flexible financing, manufacturer incentives, rebates, low-interest loan programs, and federal tax credits. We also provide preventative maintenance plans to help you avoid costly repairs, plus specials and exclusive offers throughout the year. Let us help you find the best savings for your home.
Brands We Specialize In
Navein
Bradford White
Weil-McLain
Thermo Pride
Rheem
Bosch
Riello
Boyertown
Regal
American Standard
Ruud
Utica
Burnham
Mitsubishi Electric
Peerless Boilers
Bock Water Heaters
Real Reviews. Real Customers.
I have been using A and S Nathan heating for a couple years now . Very professional, helpful and on time . Mark came out to my moms at 8:00 on Friday night . Dispatch told me where he w— Jeano Carloni
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Excellent work, nice people, been using them for years. Most recently technician Mark fixed my broken AC. He was knowledgeable, professional and thorough. Recommended!— Wm R
A&S Nathan replaced the seised blower motor in my funance that is also used for my central A/C. Diagnosed the issue found a new replacement locally, picked it up and installed it, t— Robert Steller
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Excellent prompt service— Diana Diana
Fantastic customer service. Friendly, helpful, and their advice saved me from having another pipe burst at my house.— Tim Reiss
We loved their service from scheduling down to getting the work done. Great prices! Worth the work!! 10/10— Karina Dejesus
Shout out to A&S Nathan Heating and Cooling. Today we discovered our water heater sprung a leak (water everywhere) Called A&S first thing this morning and they were able to come— Deb Tiriolo
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10 out of 10 recommend. Ian, Tommy and Dan worked on our ac unit replacement today, the crew was here on time, honest, efficient, helpful, clean and got the job done very quickly! Also— Dena Miccinello-Barbarula
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Can’t say enough about A&S! they have exceptional service and very reasonable prices. Technicians are extremely knowledgeable. Dave is fabulous!— Valerie Lucas
