DuPage County · ZIP 60137, 60138
In DuPage County, a furnace is not an appliance — it is life support for your house four months a year. When it is time to replace yours in Glen Ellyn, the install deserves to be done like it matters.
From homes near downtown Glen Ellyn to the neighborhoods around the College of DuPage, we have set furnaces in Glen Ellyn closets, basements, and utility rooms of every vintage.
Sizing comes from the house — envelope, ductwork, and real heating performance — because an oversized furnace short cycles its way to an early death and an undersized one loses the fight in January.

Here is when a new furnace beats another repair:
From estimate to first heating cycle:
We measure the house, inspect ducts and venting, and look at how the old system actually performed before recommending capacity and efficiency. That is the difference homeowners in Glen Ellyn notice.
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.
Out with the old unit, in with sheet-metal transitions cut to fit, venting and condensate run to code, gas connections leak-tested, and drop cloths under every step of it. The mechanical room ends the day cleaner than we found it.
Temperature rise, gas pressure, static pressure, and safety controls verified with instruments; warranty registered; thermostat and filter walkthrough before we go. That is non-negotiable on our Glen Ellyn jobs.
Furnace sizing is a local craft: a Glen Ellyn home needs equipment that handles design temperatures near zero with reserve for the polar-vortex outliers, without being so oversized it short cycles through the shoulder seasons. prewar and midcentury homes on mature streets, many expanded or remodeled over the decades — which leaves behind creative ductwork, additions with weak airflow, and equipment closets designed for smaller machines — so we size the house in front of us.
What to avoid when replacing a furnace:
Replacement money, without the fog:
The efficiency decision deserves honest math for DuPage County winters: a condensing furnace costs more up front and saves real gas every heating season here — our winters are long enough that the payback is genuine, not theoretical. But an 80% unit remains the right answer in some venting situations, and we will tell you when yours is one of them instead of forcing the premium sale. That is how we price work in the 60137 area — no exceptions.
Real customers, real Google reviews
“The Apex Climate Control technicians are simply the BEST!”
“Great service and quality work, thanks!”
Good to know
Capacity, efficiency tier, and what the venting, gas, and ducts need all move the number — so the honest version is a written in-person quote at several price points. The current specials cut $175 off a single unit or $350 off a full system, and financing opens at a 550 credit score. It is one of the most common questions we get around Glen Ellyn.
If the AC is also in the 12–15+ year range, pairing them saves duplicate labor, gets matched components, and qualifies for the $350 full-system discount. If your AC is young, we will tell you to keep it.
Always — removal and proper disposal of the outgoing equipment is built into every install we do.
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.
Yes. A cracked exchanger can allow combustion gases including carbon monoxide into the air stream, and on most aging furnaces the repair cost approaches replacement anyway. This is the one diagnosis where we will not recommend limping along.
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. That has held true on every Glen Ellyn job we have run.
With DuPage 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.
One call reaches our local team — no national call center, no runaround. Serving Glen Ellyn and all of DuPage County.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550