AC Installation & Replacement

Whether you need to replace an old, inefficient air conditioner or install AC for the first time, our professional AC Installation & Replacement service delivers reliable comfort and long-term energy savings for homes and businesses throughout Illinois.

AC Installation

From city apartments to suburban homes, installing the correct air conditioning system is crucial. An improperly sized unit can lead to short cycling, uneven cooling, and inflated energy bills. Our AC Installation & Replacement service starts with a detailed Manual J load calculation—accounting for insulation levels, window orientation, and local climate—to ensure your new system is neither oversized nor undersized. We handle permits, duct modifications, and final commissioning so that when we leave, your property is cool and comfortable.

What We Offer

Our full installation process includes:

• Manual J heat load calculation for precise equipment sizing
• Ductwork inspection: sealing leaks, adding insulation, and verifying airflow
• Safe removal of your old unit (EPA-certified refrigerant recovery)
• Proper refrigerant line sizing and nitrogen purge for leak-free connections
• Condenser pad placement on a level, stable surface (ground, rooftop, or slab)
• Thermostat installation and calibration (including smart or programmable models)
• System start-up, leak testing, and customer walkthrough

How to Recognize When You Need a Replacement

Consider full replacement if you observe these signs:

• Your unit is over 10–15 years old with frequent breakdowns
• Rising energy bills despite normal usage
• Uneven cooling or hot spots in different areas of your property
• R-22 refrigerant leaks (older units using R-22 are no longer serviceable)
• Excessive noise and vibration from the outdoor condenser unit

Why Choose Smart Heat of Illinois for Installation?

Smart Heat of Illinois was founded in 2010 as a small family-run operation. Over the past 20+ years, we’ve grown into a full-service HVAC company serving residential and commercial clients across the state. We are Carrier Factory Authorized, meaning we adhere strictly to manufacturer-approved installation protocols—no shortcuts. Financing options include 0% interest for 12 months (qualified credit), and we assist with all local utility rebate paperwork. Every installation comes with a 10-year manufacturer parts warranty and a 1-year labor warranty. We also include a complimentary mid-season tune-up to ensure peak performance.