Heating · Fox Valley & western suburbs
A furnace here has to start at twenty below wind chill and run for months. Sizing, venting, and commissioning decide whether it will — so that's what we obsess over.
Northern Illinois does not grade furnaces on a curve. Design temperatures sit near zero, cold snaps blow past them, and the heating season runs four-plus months of near-continuous duty. A furnace installed for this climate needs honest sizing — enough capacity for the polar-vortex outliers without so much that it short-cycles through the shoulder seasons.
That sizing comes from the building: envelope, windows, insulation, duct capacity, and how the outgoing furnace actually performed through past winters. Matching the old label is not sizing — it repeats a decision somebody made for a different version of your house, before the new windows and the attic insulation.
Install day is craft work: sheet-metal transitions cut to fit, venting and condensate run to code, gas connections leak-tested, and full commissioning — temperature rise, gas pressure, static pressure, safety controls — verified with instruments before we leave. Then the warranty gets registered in your name and the thermostat gets explained, not gestured at.
With heating seasons this long, high-efficiency condensing furnaces earn their premium back in fuel savings faster in the Fox Valley than almost anywhere — every therm saved compounds across four-plus months, every winter. We run that comparison honestly for your house, including the cases where the mid-tier furnace is genuinely the right buy.
Current specials: $175 off a single-unit install, $350 off a full furnace-and-AC system, through November 30, 2026. Financing through Enhancify approves from a 550 credit score with 0% options for qualified buyers.
Good to know
One day covers most straight replacements. Venting rework, duct changes, or a paired AC add time — which you hear at the quote stage, never as a surprise.
Usually 95%+ condensing equipment pencils out here given our heating season length — but venting logistics, how long you plan to stay, and budget all get a vote. We show the math for your actual house and tell you when the cheaper tier honestly wins.
Yes — a large share of Fox Valley furnaces live in closets and corners. Careful sheet-metal work and code-correct venting in tight quarters is routine for us; the furnace-closet photos on this site are real local jobs.
Always — removal and proper disposal of the outgoing equipment is built into every install.
Talk to a real local team about your heating, cooling, or indoor air problem — no call centers, no runaround.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550