Professional AC Installation in Connecticut

Looking to upgrade your cooling system or install air conditioning for the first time? At A&S Nathan Heating & Cooling LLC, we specialize in installing central air systems, heat pumps, and ductless mini-splits designed to keep your home cool, efficient, and comfortable—even on the hottest summer days. Our licensed team will help you choose the right solution for your home and budget, then install it with precision.

Why Choose Us for AC Installation?

Custom System Sizing – We’ll ensure your AC system is perfectly matched to your home’s needs.
Energy-Efficient Options – Lower utility bills with high-efficiency air conditioners and modern technology.
Ductless & Heat Pump Solutions – Flexible options for homes with or without ductwork. Mitsubishi Preferred Diamond Contractor.
Trusted Local Experts – Serving Connecticut families with reliable HVAC service for over 25 years.
Licensed & Insured – Professional installation backed by over 25 years of experience.
Financing Available – Affordable payment plans through companies such as Synchrony and Energize CT’s Smart-E loan.

Our Air Conditioning Installation Services

Central air conditioning systems
Heat pump installation
Ductless mini-split systems
Thermostat upgrades & zoning controls
Replacement of outdated AC units

Service Areas

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

Upgrade to a New AC System Today

Don’t wait until your old system breaks down—invest in a new, energy-efficient air conditioner with A&S Nathan Heating & Cooling LLC. Call (203) 555-1234 or click Book Appointment to schedule your free AC installation estimate today.

Book an Appointment

I had annual service done on my HVAC systems today. The guys did a great job! They arrived on time and were very friendly and professional. They explained everything to me and gave me m
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— Chris Blaszczynski

I very rarely write a review for a company but this is my SECOND review for A&S NATHAN… From the office people to the techs themselves, there is always a feeling of family and pro
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— Martin Goldschmidt

Fast service. Called on a dead furnace and new furnace installed SAME DAY!

— George Habrecht

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

I reached out for help with my AC unit that wasn’t cooling, and they came out the same day to diagnose the problem. Mark, the technician, was very knowledgeable and took the time to e
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— Carlos Caraballo

Techs came out to diagnose my oil furnace,Dave M and David S were very patient and explained everything, and corrected all the things that were left from the previous owner, then someon
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— salt peanuts

Contacted Jake at A&S on a Wednesday that I needed my hot water heater to be cleaned and they told me with the holidays they were 4-6 weeks out.

— Mikey DeLeon

Kyle was fantastic! So personable and quickly helped resolve our AC issue on a very hot day! He is such a credit to your business.

— Kate Dillon

We loved their service from scheduling down to getting the work done. Great prices! Worth the work!! 10/10

— Karina Dejesus

This is a great company. I had a problem with my heat not coming on and would have to hit the reset button.The technician, Craig, was friendly, fast and efficient.

— Tracy Buckley

We used A&S Nathan to replace our Water Heater that wasn’t venting properly. During the estimate, Jake explained my options and recommended an On Demand water heater. I am ext
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— Mark A

Great company. They have been servicing my oil furnace and air conditioning unit for about 20 years. The technicians are friendly, courteous and excellent at their trade. Highly recomme
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— Nick O