The HVAC Questions Every First-Time Home Buyer Should Ask

Updated September 28, 2026. The heating and air-conditioning system is one of the most expensive components of a home to replace—and one of the easiest to overlook during a showing. Before making an offer, ask the questions below, watch for warning signs and use the due-diligence period to arrange an appropriate evaluation.

1. What type of system is it?

Most Georgia homes have a gas furnace with central air conditioning, or an electric heat pump that both heats and cools. Some have ductless mini-splits, and a few older homes have boilers or no central AC. Ask whether heating is gas or electric, how many systems the home has (larger and two-story homes often have one per floor), and where the equipment and ductwork are located. In many Georgia homes, ducts run through the attic or crawlspace, where leaks and poor insulation waste energy.

2. How old is it?

Check the data plate on the outdoor unit and the furnace or air handler. The manufacture date is usually printed there or encoded in the serial number. ENERGY STAR suggests considering replacement when a heat pump or air conditioner is more than 10 years old, or a furnace or boiler is more than 15 years old. Age alone does not prove a system needs replacement, but an older system is an important budgeting and negotiating factor.

3. Is there a maintenance history?

Ask the seller for records of tune-ups, repairs, part replacements and the original installation. Regular service is a good sign. Gaps, repeated refrigerant recharges, or recent major repairs are worth a closer look.

4. Is there a warranty, and does it transfer?

Manufacturer warranties often depend on registration and may not transfer to a new owner. Ask what's covered (parts, labor or both), how long remains, and what's required to transfer it. Get the paperwork.

5. How efficient is it?

Cooling efficiency is now rated in SEER2. Since 2023, new central air-conditioning efficiency requirements have varied by equipment type and region; the Southeast standards apply in Georgia. Check the equipment label and current U.S. Department of Energy guidance rather than assuming a rating from appearance alone. For gas furnaces, AFUE describes annual fuel-use efficiency. Ask the seller for 12 months of utility bills to review real-world costs.

6. What refrigerant does it use?

Older systems may use R-22, an ozone-depleting refrigerant that is no longer produced or imported for servicing existing equipment in the United States. An R-22 system is not automatically required to be replaced, but repairs involving refrigerant may be costly because servicing relies on recovered, recycled or reclaimed material. Review the EPA phaseout information and ask the contractor to identify the refrigerant on the unit label.

Warning signs to look for

During showings and the inspection, watch for:

• rust, corrosion, or water stains around the equipment;
• a clogged or leaking condensate line or drain pan (common in humid climates);
• rooms that are noticeably warmer, cooler, or more humid than others;
• musty odors, excessive dust, or visible mold near vents;
• banging, rattling, or buzzing sounds, or a system that cycles on and off frequently.

Georgia's humid climate (most of the state is in climate zone 3A, and the mountains are 4A, per Southface) makes moisture control as important as temperature. An oversized or poorly maintained system can cool a house without removing enough humidity.

What a home inspection covers and what it doesn't

A general home inspector checks accessible heating and cooling equipment using normal controls and reports visible problems, subject to the inspection agreement and applicable standards. Inspectors generally do not guarantee remaining service life or complete system design. If the equipment is older or the inspector flags concerns, have a properly licensed HVAC professional evaluate it during due diligence. Georgia regulates this work through the State Board of Conditioned Air Contractors. Also see our list of common inspection red flags.

How HVAC can affect financing and negotiations

Loan type matters. FHA property standards address adequate heating and the operation of installed systems; review the current HUD Single Family Housing Policy Handbook and ask the lender how the requirements apply to the property. Other loan programs have their own standards. If the HVAC system is old or has problems, obtain a written contractor estimate before the due-diligence period ends. Depending on the contract and situation, a buyer might ask the seller to:

• make repairs before closing;
• provide a credit toward closing costs;
• reduce the price;
• include a home warranty.

Quick checklist

Use this summary during showings and due diligence. On a phone, swipe horizontally to see every column.

Ask for the system age, the maintenance records, the warranty paperwork and 12 months of utility bills. Watch for moisture, noise and uneven rooms. If anything is uncertain, schedule an HVAC contractor evaluation during due diligence. Buying your first home? Contact The Carl Hawthorne Team. We'll help you plan inspections and negotiate repairs. For first-time buyer steps in Cherokee County, see our first-time buyer guide. The Carl Hawthorne Team, Watkins Real Estate Associates.

Important: Equipment requirements, efficiency standards, refrigerant rules, warranties and loan guidelines can change. Verify property-specific conditions with the inspector, appropriately licensed contractor, lender, manufacturer and applicable agency.