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Heat Pumps & Mini-Splits · Fox Valley & western suburbs

Heat Pump Repair

A heat pump works both shifts — heating and cooling, all year. Repairing one takes a tech who understands both halves of the job, and that's exactly what shows up.

Heat pumps fail in ways furnaces and air conditioners never can: a reversing valve that won't flip between modes, a defrost board that lets the outdoor coil turn into an ice sculpture, auxiliary heat staging that quietly hijacks the electric bill. A tech who only knows furnace-and-AC work will miss these — or worse, misdiagnose them into expensive guesses.

Our heat pump diagnostics run the system the way it actually lives: through heating, cooling, and defrost, with pressures, temperatures, and electrical readings in each mode. Reversing valve operation, defrost sensors, and aux-heat logic get tested specifically, because that's where heat pump problems hide from generic diagnostics.

And because a heat pump has no off-season, we treat these calls with urgency in both directions — a failed heat pump in January is a no-heat call, and the same machine failing in July is a no-cool call. Same equipment, same phone number, same priority.

Technician testing an outdoor unit fan assembly

Symptoms worth a call

  • Cool air in heating mode while the house loses ground on the thermostat
  • The outdoor unit encased in ice that defrost cycles never clear
  • An electric bill spike that tracks the cold — the aux-heat signature
  • The system stuck in one mode, or refusing to switch
  • Breaker trips when the unit starts
  • New grinding, screeching, or hard buzzing from the outdoor unit

The aux-heat trap, and why bills tell on broken heat pumps

Here's the failure mode unique to heat pumps: they can be broken and you might not notice — because the auxiliary electric heat quietly covers for them. The house stays warm, the thermostat looks satisfied, and the only witness is the electric bill, running double while resistance coils do a job the heat pump should be doing at a third of the cost.

If your winter electric bills jumped without a weather explanation, that's a diagnostic call that typically pays for itself within the billing cycle. We'll find whether the heat pump has a fault, the aux staging is misconfigured, or both — and fix the actual cause.

Debris buildup inside an outdoor unit coil
Talk to a local tech: call 630-486-0401 or email support@apex-climate-control.com. Financing available with credit scores as low as 550.

Good to know

Heat Pump Repair FAQs

Is steam rising off my heat pump a problem?

No — that's a normal defrost cycle. The unit briefly reverses to melt frost off the outdoor coil, and the meltwater flashes into visible steam. Periodic steam is health; permanent ice is the problem worth calling about.

Should I run emergency heat while I wait for service?

If the heat pump is clearly failing — iced solid, making mechanical noise, tripping breakers — yes. Emergency heat keeps the house warm at higher operating cost, which is exactly what it's for: a bridge to the repair, not a lifestyle.

Do you service mini-split heat pumps too?

Yes — ducted and ductless alike. Mini-splits share the same heat pump fundamentals with their own quirks (washable filters, condensate pumps, board-driven controls), and we handle both.

My heat pump is 12 years old and needs a compressor — repair or replace?

That's replacement-conversation territory, honestly. A heat pump runs year-round, so 12 years of duty is comparable to a much older AC — and compressor money on that vintage rarely pencils against a new system with full warranty. You'll get both totals side by side and the decision stays yours.

Ready to Get Comfortable?

Talk to a real local team about your heating, cooling, or indoor air problem — no call centers, no runaround.

630-486-0401

Or email support@apex-climate-control.com · Financing available with credit scores as low as 550

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