Serving North Aurora & the Fox Valley — 57 Towns Across 9 Illinois CountiesFinancing Available · support@apex-climate-control.com

Cook County · ZIP 60439

Furnace Replacement & Installation in Lemont, IL

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.

New Goodman furnace and evaporator coil installed with fresh sheet-metal plenums

Signs It’s Time To Call

Price a replacement when you recognize a few of these:

  • The furnace is 15–20+ years old and facing a significant repair
  • Loud operation that keeps getting louder
  • Repairs two winters in a row, with each one bigger than the last
  • A cracked heat exchanger — the one failure that ends the conversation on safety grounds — the call we get most from Lemont
  • Uneven heat that duct fixes have not solved
  • The house cannot hold temperature during cold snaps anymore (we see this weekly around Lemont)

How We Handle Furnace Installation in Lemont

Install day, step by step:

1. Home evaluation

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.

2. Written options

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.

3. Clean installation

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.

4. Full commissioning

Temperature rise, gas pressure, static pressure, and safety controls verified with instruments; warranty registered; thermostat and filter walkthrough before we go.

What It Costs — The Honest Version

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.

Local Know-How for Lemont Homes

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.

Mistakes Worth Avoiding

The replacement missteps that cost for decades:

  • Choosing the lowest bid without itemization; the gap is usually missing work, not charity
  • Matching the old furnace's size instead of the house — oversizing causes short cycling and uneven rooms for the unit's whole life
  • Accepting an install with no combustion analysis or gas pressure measurement — 'it lit' is not commissioning (we see this weekly around Lemont)
  • Skipping the warranty registration and maintenance documentation that keep coverage valid
  • Ignoring the AC coil sitting on top; mismatches and clearances matter for both systems — do not wait on this one

Why Lemont Calls Apex

  • Honest tiering: if the mid-tier furnace is the right answer for your house, that is the one we will tell you to buy.
  • $175 off a single-unit install or $350 off a full furnace-and-AC system, valid through November 30, 2026.
  • Financing through Enhancify with approvals from a 550 credit score and 0% options for qualified buyers.
Installing a furnace in Lemont before November 30, 2026? Mention the current specials when you call 630-486-0401 — $175 off a unit, $350 off a full system.

Real customers, real Google reviews

What Lemont Customers Say

The Apex Climate Control technicians are simply the BEST!

Rachelle Ventura, Google review

Great service and quality work, thanks!

Douglas Anderson, Google review

Read more reviews on Google →

Good to know

Furnace Installation FAQs — Lemont, IL

Can I finance a furnace with imperfect credit?

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.

What efficiency furnace should I buy for Cook County winters?

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.

What size furnace does my house need?

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.

How much does a new furnace cost in Lemont?

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.

Should I replace my AC at the same time?

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.

Do you haul away the old furnace?

Yes — removal and disposal of the old equipment is part of every install. A quick call sorts it out faster than wondering.

How long does furnace installation take?

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.

Need Furnace Installation in Lemont?

One call reaches our local team — no national call center, no runaround. Serving Lemont and all of Cook County.

630-486-0401

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

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