Cook County · ZIP 60439
Heat pumps run year-round, and in Lemont that means year-round chances for something to quit — in a January cold snap or a July heat wave alike.
Apex Climate Control repairs heat pumps throughout Lemont — in the bluffs above the Des Plaines Valley — from our home base in North Aurora, about 48 minutes from our North Aurora shop.
We test the system the way heat pumps demand — in both modes, through defrost, with the auxiliary heat logic checked — because half-diagnosed heat pumps are how homeowners pay for the same failure twice.

If any of this sounds like your system, it is time for a diagnosis:
What happens when you call us about a heat pump problem:
A heat pump cannot be diagnosed like an AC with a winter hobby — so we run it like what it is: pressures and temperatures in heating and cooling, defrost observed through a cycle, reversing valve and auxiliary staging tested directly. The failures unique to heat pumps live exactly where generic diagnostics never look.
You see what failed, what likely caused it, and what the fix costs — before any work starts. If the system's age makes a major repair questionable, you get the repair-versus-replace math honestly, with the decision left where it belongs: with you. It is the same standard we bring to every Lemont visit.
The fix goes in right — correct parts, correct refrigerant handling, correct control configuration — and then the system proves itself through full cycles in both modes while we verify capacity and operation.
Before the truck leaves, we look for what killed the part: starved airflow, a dirty coil, a drifted charge, aux settings working the system too hard. Fixing the component without the cause is how the same repair gets sold twice — not our model. Cook County homes deserve nothing less.
The money side, both seasons of it:
Age math runs faster on heat pumps: year-round duty means a 12-year-old unit has worked like a much older AC, so major component quotes — compressor, reversing valve — on older units get the honest repair-versus-replace treatment automatically. Both totals, side by side, with financing options on the replacement column; the decision stays yours. Ask around Lemont; our quotes have a reputation for matching the invoice.
Lemont winters are where marginal heat pumps get exposed: defrost problems, low charge, and bad aux-heat settings all hide in mild weather and surface in the first real cold. We diagnose with that pattern in mind.
Heat pump mistakes Lemont owners make:
Real customers, real Google reviews
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Good to know
First check the reassuring explanation: heat pump supply air runs near body temperature — warm to the room, cool to a hand expecting furnace blast — while heating perfectly well. The real-problem version is a house losing ground on the thermostat: low charge, reversing valve, or mode fault, all diagnosable, all better caught before aux heat quietly takes over the bill.
It is the setting that runs backup heat alone, bypassing the heat pump. Use it when the heat pump has clearly failed — iced solid, making bad noises, tripping breakers — to stay warm until service. It is expensive to run, so it is a bridge to a repair, not a lifestyle.
Same honest math as any equipment, adjusted for the fact that heat pumps age in dog years — year-round duty means a 12-year-old heat pump has worked like a 20-year-old AC. Small electrical repairs: fix at nearly any age. Compressor or reversing-valve money on an older unit: you deserve both totals side by side, and you will get them.
Light frost that clears during defrost cycles is completely normal. A unit encased in thick ice that never clears is not — that means a defrost fault, low charge, or an airflow problem, and running it that way strains the compressor. Shut it to emergency heat and call us. Homeowners in the 60439 area ask us this all the time.
All of them. Heat pump failure parts are largely universal — capacitors, contactors, defrost boards, fan motors — and the brand on the cabinet changes little about the diagnosis. We stock the common parts and service whatever is out there in Cook County.
Ideally twice a year — once before heating season, once before cooling — because it works both. Annual service is the practical minimum. Year-round duty means maintenance matters more for heat pumps than for any other residential HVAC equipment.
Some increase is normal — heat pumps work harder in cold weather. A dramatic spike usually means auxiliary electric heat is running far more than it should, either because the heat pump has a problem it is compensating for, or because the aux lockout settings were never configured right. Both are fixable, and both are worth fixing quickly at winter electric rates. It is one of the most common questions we get around Lemont.
One call reaches our local team — no national call center, no runaround. Serving Lemont and all of Cook County.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550