Frequently Asked Questions

We recommend a furnace tune-up once a year, ideally in the fall before heating season. Annual maintenance catches small issues early, keeps your system running efficiently, and can extend the life of your equipment significantly. It's one of the best investments you can make in your home comfort.

A/C systems should be serviced once a year, typically in the spring before cooling season. A tune-up includes cleaning coils, checking refrigerant levels, testing electrical components, and making sure the system is ready for summer demand.

Common signs include frequent breakdowns, uneven heating, rising energy bills, or the system is 15–20+ years old. A cracked heat exchanger is a safety issue that often means it's time to replace. We'll always give you an honest assessment — sometimes a repair makes more sense, and sometimes replacement is the better investment. We'll walk you through your options without pressure.

Signs your A/C may need replacing include the system being 10–15+ years old, frequent and costly repairs, refrigerant leaks (especially older R-22 systems), poor cooling performance, or unusually high electric bills. We'll diagnose the problem and give you honest options.

Yes. We have 24/7 service availability — including nights, weekends, and holidays. If your heat goes out in a snowstorm or your A/C fails on a hot summer day, call or text us at (847) 516-8221 and we'll get to you as quickly as possible.

Most furnace or air conditioner replacements can be completed in a single day. More complex jobs — like adding ductwork, upgrading electrical service, or installing a full system from scratch — may take two days or more. We'll give you a clear timeline before we start any work.

We commonly install Rheem, Goodman, and Durastar equipment, and we service and repair all major brands including Carrier, Trane, Lennox, York, Bryant, American Standard, and more. If you have a brand not listed, give us a call — we can almost certainly help.

Tank water heaters typically last 8–12 years. Signs it's time to replace include rust-colored water, rumbling noises, leaks around the base, or inconsistent hot water. If yours is over 10 years old, it's worth having it inspected — a proactive replacement is much less disruptive than an emergency one.

For standard 1-inch filters, every 1–3 months is a good rule of thumb — more often if you have pets, allergies, or heavy dust. Thicker media filters (4–5 inch) can last 6–12 months. A dirty filter restricts airflow, which strains the system and reduces efficiency. When in doubt, check it monthly.

A mini-split (ductless) system heats and cools a space without needing ductwork. They're great for additions, garages, bonus rooms, sunrooms, or any area that's hard to condition with your main system. They're efficient, quiet, and provide both heating and cooling from one unit. Contact us and we can walk you through whether a mini-split is the right fit for your situation.

Yes. Epp's Custom Heating & Air is fully licensed, bonded, and insured in Illinois. We've been serving the Fox River Grove area and surrounding communities for over 40 years.

For installations and replacements, we're happy to provide estimates. Give us a call at (847) 516-8221 or submit a service request online and we'll get back to you to discuss your needs.