Furnace tune-up
Burners, igniter, flame sensor, inducer, blower, belts, filter, gas pressure and the safety switches tested and cleaned.
Tune-ups & safety checks
HVAC Maintenance & Tune-Ups in Chicago
Green Leaf Heating & Cooling connects Chicago homeowners with local technicians for furnace tune-ups, AC tune-ups and boiler service, done before the season starts so a worn part gets replaced on your schedule instead of failing on the coldest night. Call (312) 924-7223 to book.
Fix it in October, not January.
About maintenance
Furnace Maintenance in Chicago Before the First Cold Snap
Most no-heat calls in December trace back to parts that were already worn in October: a cracked igniter, a dirty flame sensor, a weak capacitor or a clogged filter. A tune-up finds them while there’s time to fix them.
A tune-up is also a safety check. Furnaces and boilers burn gas inside your home, so the technician checks combustion, venting and carbon monoxide every visit. For air conditioners and heat pumps, spring service cleans the outdoor coil, checks refrigerant and tests the electrical parts before the first heat wave.
The best timing in Chicago is early fall for heating and spring for cooling. Many homeowners book both, and ask for a reminder each season.
- ✓ Furnace tune-ups
- ✓ AC and heat pump tune-ups
- ✓ Boiler service
- ✓ Carbon monoxide and safety checks
What’s checked
What an HVAC Tune-Up Includes
The checks a seasonal visit covers. Exact steps depend on your equipment.
Combustion and CO check
Flue gases and venting checked for safe operation, and the heat exchanger inspected for cracks.
AC tune-up
Outdoor coil cleaned, refrigerant pressures and temperatures checked, capacitor and contactor tested, drain line cleared.
Boiler service
Burner and controls checked; on steam, the low-water cutoff tested and water level checked; on hot water, pressure and expansion tank.
Thermostat and controls
Calibration, wiring and settings checked, including heat pump staging and backup heat.
Filter and airflow
Filter replaced or checked, airflow and temperature rise measured, ducts looked over for obvious leaks.
How it works
How a Seasonal Tune-Up Visit Works
Call in late summer or early fall for heating, and in spring for cooling.
The technician works through the checklist for your system and cleans what needs it.
Anything worn or failing is shown to you, with a free estimate for the repair. Nothing is replaced without your approval.
The system is run through a full cycle, and you get notes on what to watch and when to change the filter.
STEP 01Book before the season
Call in late summer or early fall for heating, and in spring for cooling.
Between visits
HVAC Maintenance You Can Do Yourself
- Change the filter. Every one to three months for standard 1-inch filters, more often with pets; media filters last longer. A clogged filter is the most common cause of overheating and freezing.
- Test your carbon monoxide alarms monthly, and keep one near sleeping areas on every floor.
- Keep the outdoor unit clear. Cottonwood fluff in June, leaves in fall, snow in winter for heat pumps.
- Check the condensate drain on high-efficiency furnaces and ACs; a clog can shut the system down.
- Bleed hot-water radiators at the start of the season if they’re cold at the top. See how to bleed a radiator.
- Watch the sight glass on a steam boiler; the water should sit about a third to half way up.
For a full fall checklist, read how to get your furnace ready for a Chicago winter and what an HVAC tune-up includes.
Maintenance FAQ
HVAC Maintenance Questions From Chicago Homeowners
Short answers to what Chicago homeowners ask most before they call.
(312) 924-7223Once a year, ideally in early fall before the heating season. Boilers also need yearly service, and air conditioners and heat pumps do best with a spring check.
It catches worn parts before they fail, keeps the furnace running efficiently, and includes a safety check of combustion and venting. Many manufacturers also expect yearly service for warranty coverage.
Usually around an hour per system, longer if the equipment needs cleaning or a repair.
You’re shown what’s wrong and given a free estimate for the repair. Nothing is replaced without your approval.
Ask when you call. Many homeowners simply book a fall heating visit and a spring cooling visit each year.
Related services
More HVAC Services in Chicago
01Furnace RepairIf the tune-up finds a failing part, or the heat has already stopped.↗02Boiler RepairSteam and hot-water boiler repair.↗03AC RepairCooling repairs for central air and heat pumps.↗04Air Duct CleaningDuct and dryer vent cleaning when dust builds up.↗05Indoor Air QualityBetter filters, humidifiers and smart thermostats.↗06Water HeatersWater heater flushing, repair and replacement.↗
HVAC maintenance across Chicago
HVAC maintenance in Your Neighborhood
Ready when you are
Book an HVAC Tune-Up in Chicago
Call (312) 924-7223 to schedule a furnace, boiler or AC tune-up before the season starts.
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