DeKalb County · ZIP 60115
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.
From homes near the NIU campus to the neighborhoods around the Egyptian Theatre, we have set furnaces in DeKalb 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.
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. DeKalb County homes deserve nothing less.
Old unit out, new furnace set with properly fitted transitions, venting and condensate to code, gas leak-tested, drop cloths down the whole way. It is how we have built our name around DeKalb.
Temperature rise, gas pressure, static pressure, and safety controls verified with instruments; warranty registered; thermostat and filter walkthrough before we go.
Replacement money, without the fog:
Watch the quote spread trap: identical furnace models get quoted thousands apart across companies, with install quality hiding in the gap — venting done right, gas pressure set with instruments, combustion tested, airflow verified. Our quotes itemize the work, and the current $350 full-system special and $175 single-unit special come off honest numbers. Every DeKalb quote we write follows that rule.
Furnace sizing is a local craft: a DeKalb 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. a university town's mix — historic neighborhoods, mid-century family stock, and a large rental inventory where reliable equipment and responsive service matter to owners and tenants alike — so we size the house in front of us.
What to avoid when replacing a furnace:
Real customers, real Google reviews
“The Apex Climate Control technicians are simply the BEST!”
“Great service and quality work, thanks!”
Good to know
Yes — Enhancify approves down to a 550 score, with 0% promotional terms for qualified customers, and the online application takes minutes with no obligation attached.
With heating seasons this long, 95%+ condensing furnaces usually earn their premium back in fuel savings — but the right answer depends on your venting situation, how long you plan to stay, and your budget. We lay out the math for your actual house. Either way, you will get a straight answer from us.
It comes from the house — square footage, insulation, windows, and duct capacity — not from matching whatever was there before. Homes get air-sealed, remodeled, and re-windowed over the years; the old label is history, not guidance.
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 60115 area ask us this all the time.
Yes — removal and disposal of the old equipment is part of every install.
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 DeKalb and all of DeKalb County.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550