Cook County · ZIP 60439
Northern Illinois winters do not grade on a curve. A furnace installed here has to start reliably at twenty below wind chill and run for months — and that starts with an install done right.
Apex Climate Control installs furnaces throughout Lemont — in the bluffs above the Des Plaines Valley — working out of North Aurora, about 48 minutes from our North Aurora shop.
Install day means sheet metal that fits, venting and condensate done to code, gas connections tested, and a full commissioning: temperature rise, static pressure, and safety verification before we leave.

Price a replacement when you recognize a few of these:
Install day, step by step:
We measure the house, inspect ducts and venting, and look at how the old system actually performed before recommending capacity and efficiency. Ask any Lemont customer who has watched us work.
Several tiers, actual model numbers, actual totals — and the $175 single-unit or $350 full-system discount already applied where it belongs. Nothing quoted from memory, nothing added later.
Old unit out, new furnace set with properly fitted transitions, venting and condensate to code, gas leak-tested, drop cloths down the whole way. We hold that line on every job in Cook County.
Temperature rise, gas pressure, static pressure, and safety controls verified with instruments; warranty registered; thermostat and filter walkthrough before we go.
What a new furnace costs in Lemont — the honest levers:
Furnace pricing moves with capacity, efficiency (80% versus 95%+ condensing), staging (single, two-stage, modulating), and the installation realities of your house — venting route, condensate drainage for high-efficiency units, plenum transitions. Phone quotes ignore all four, which is why ours come after a visit, in writing, at more than one price point. Every Lemont quote we write follows that rule.
A large share of Lemont furnaces went in during the same building years, and they are aging out on the same clock. Replacing yours on a mild week in your own timeline beats replacing it during a January cold snap on the emergency schedule.
The replacement missteps that cost for decades:
Real customers, real Google reviews
“The Apex Climate Control technicians are simply the BEST!”
“Great service and quality work, thanks!”
Good to know
Our Enhancify financing partner approves scores as low as 550, with 0% promotional options for qualified customers. You can apply online in minutes before committing to anything.
With Cook County heating seasons running four-plus months, a 95%+ condensing furnace usually pays its premium back in gas savings — but venting logistics, how long you are staying, and budget all get a vote. We run the comparison on your actual house and tell you when the cheaper tier honestly wins.
The house decides — envelope, windows, insulation, duct capacity — not the label on the old unit. Homes get air-sealed, remodeled, and re-windowed over decades; matching the old furnace just repeats a sizing decision somebody made for a different version of your house.
It depends on capacity, efficiency tier, and what the venting, gas, and ductwork need — so we quote in person, in writing, at multiple price points. Current specials take $175 off a single unit or $350 off a full system, and financing is available from a 550 credit score.
If the air conditioner is also mid-teens or older, pairing is usually the play: shared labor, matched components, and the $350 full-system discount. If the AC has years left, we will be the first to say leave it alone. Homeowners in the 60439 area ask us this all the time.
Yes — removal and disposal of the old equipment is part of every install. A quick call sorts it out faster than wondering.
One day covers most straight swaps. Venting rework, duct changes, or a paired AC install add time — which you will hear at the quote stage, never as a surprise mid-job.
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