Stay Cool with Professional Air Conditioner Installation

When your old air conditioner can’t keep up with Rockford’s summer heat, it’s time for an upgrade.
At Gilley’s HVAC, we provide AC replacement and installation in Rockford, IL, delivering reliable comfort, energy savings, and peace of mind.
Our licensed HVAC technicians help you choose the right system, install it correctly, and make sure it runs efficiently — all backed by honest pricing and guaranteed workmanship.

When to Replace Your Air Conditioner

Wondering if it’s time to replace your AC instead of repairing it? Here are a few telltale signs:

• Your AC is 10–15 years old or older

• Frequent breakdowns or expensive repairs

• Uneven cooling or poor airflow

• Increasing energy bills

• R-22 refrigerant system (phased out and costly to maintain)

If you’re unsure, our team can evaluate your system and give you an honest recommendation — no pressure, just facts.

Why Choose Gilley’s for AC Replacement in Rockford?

• Family-Owned & Operated Since 1985 – Trusted by Rockford homeowners for decades.

• Certified HVAC Installers – Licensed, insured, and factory-trained.

• Free, No-Pressure Estimates – Clear, upfront pricing every time.

• High-Efficiency Systems – ENERGY STAR® air conditioners that reduce energy bills.

• Financing & Rebates Available – We’ll help you access utility and manufacturer incentives.

Gilley’s makes upgrading your comfort system simple, affordable, and stress-free.

Our Air Conditioner Installation Process

1. In-Home Assessment – We measure your space and assess your cooling needs.

2. System Selection – Choose from top brands and high-efficiency models.

3. Professional Installation – We remove the old system, install the new one, and ensure proper airflow and refrigerant charge.

4. Testing & Cleanup – Your system is tested for peak performance, and we leave your home spotless.

Every installation is backed by strong warranties and Gilley’s satisfaction guarantee.

How Much Does AC Replacement Cost in Rockford, IL?

Air conditioner installation typically costs between $4,500 and $8,500, depending on the unit size, efficiency rating, and ductwork.
Upgrading to a high-efficiency system can lower your cooling costs by 20–40% and may qualify for federal tax credits and ComEd rebates.
We’ll provide a clear, written estimate before any work begins.

Types of Air Conditioning Systems We Install

• Central Air Conditioners – Quiet, powerful, and efficient for whole-home cooling.

• Ductless Mini-Splits – Great for additions, remodels, or homes without ducts.

• Heat Pump Systems – Energy-efficient all-in-one heating and cooling.

• High-Efficiency Units – Advanced models for maximum comfort and energy savings.

We’ll help you compare options and find the best solution for your home and budget.

Areas We Serve

We proudly install air conditioners in Rockford, Loves Park, Belvidere, Machesney Park, Cherry Valley, and surrounding Illinois communities.
If you’ve been searching for “AC installation near me” or “air conditioner replacement Rockford IL,” Gilley’s is your trusted local expert.

Schedule Your AC Replacement Today

Don’t sweat another summer with an unreliable air conditioner.
Call Gilley’s Heating, Cooling & Plumbing today for professional AC replacement in Rockford, IL, or click below to request a free installation estimate.
Our experienced HVAC team is ready to help you stay cool, efficient, and comfortable.