Replace Your Old AC with Modern Efficiency

If your air conditioner struggles to cool your home or frequently breaks down, it’s time for an upgrade. A&S Nathan Heating and Cooling LLC provides professional air conditioning replacement in Derby, CT, installing advanced systems that reduce energy use and improve comfort.

Signs It’s Time to Replace Your Air Conditioner

AC older than 12 years
Frequent repairs or high energy use
Weak or uneven cooling
Outdated refrigerant (R-22)
Rising energy costs

Modern Cooling Systems We Install

We replace and install a wide variety of high-efficiency systems designed to meet Derby homeowners’ needs:

Central Air Conditioning Systems – Whole-home comfort with quiet, even cooling.
Ductless Mini-Splits (Mitsubishi, Daikin, LG, etc.) – Zoned cooling with independent room control.
Heat Pumps & Hybrid Systems – Efficient year-round comfort for both heating and cooling.
Smart Thermostats – Connected technology from Nest, Ecobee, and Honeywell to fine-tune your comfort.

We’ll help you choose a replacement that fits your home’s design, energy goals, and budget.

Our Air Conditioning Replacement Process

We make upgrading simple and stress-free with a proven, step-by-step process:

System Evaluation – We inspect your current setup, ductwork, and electrical systems.
Personalized Recommendations – You’ll get options suited to your comfort preferences and energy needs.
Upfront Pricing – Clear, honest estimates with no hidden fees or surprises.
Professional Installation – All work performed by licensed, insured HVAC specialists.
Testing & Calibration – We check temperature balance, airflow, and efficiency before we leave.
Warranty & Follow-Up – We register your system and stand behind every installation.

Our replacements are built to deliver consistent comfort for years to come.

Your Local Cooling Partner

We serve Derby, Ansonia, Seymour, and Shelton, delivering reliable replacements with clean, precise installation.

Why Choose A & S Nathan Heating & Cooling

Derby homeowners trust our family-owned company because we combine experience, honesty, and quality service.

Family-Owned & Operated Since 2000
Fully Licensed, Insured, and Factory-Trained
All Major Brands Installed
Upfront Pricing — No Hidden Fees
Rebates & Financing Options Available
100% Satisfaction Guarantee

We don’t just replace equipment — we improve comfort, reliability, and efficiency in every home we serve.

Rebates & Financing Made Easy

High-efficiency air conditioners qualify for Connecticut energy rebates and convenient financing programs, making it easier to upgrade your home’s comfort. Our team will help you find eligible systems and handle rebate paperwork for a smooth, affordable experience.

Financing and Rebates