Lake County · ZIP 60035
In Lake 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 Highland Park, the install deserves to be done like it matters.
We are a Fox Valley company: North Aurora is home base, Highland Park is about 86 minutes from our North Aurora shop, and classic North Shore stock — large early-1900s homes, mid-century architect builds, and extensive renovations — where original boilers, converted systems, and added zones make mechanical work genuinely interesting — so we quote for the actual house, not a spreadsheet average.
You get options in writing at more than one efficiency tier, current specials applied, and financing laid out clearly if you want it.

Replacement is usually the right call for Highland Park homeowners when this pattern shows up:
Our furnace installation process in Highland Park:
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. It is how we have built our name around Highland Park.
Old unit out, new furnace set with properly fitted transitions, venting and condensate to code, gas leak-tested, drop cloths down the whole way.
Temperature rise, gas pressure, static pressure, and safety controls verified with instruments; warranty registered; thermostat and filter walkthrough before we go. Ask any Highland Park customer who has watched us work.
High-efficiency condensing furnaces make particular sense in Lake County: with heating seasons this long, the fuel savings over a builder-grade unit compound every single winter. We will show you the comparison honestly — including when the cheaper tier is actually the right call.
Furnace-buying mistakes we see in Highland Park:
How furnace pricing actually works:
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. That policy has never once changed for a Highland Park customer, and it will not start now.
Real customers, real Google reviews
“The Apex Climate Control technicians are simply the BEST!”
“Great service and quality work, thanks!”
Good to know
Yes — removal and disposal of the old equipment is part of every install.
A standard replacement is typically completed in a day. Venting changes, duct modifications, or full-system installs can add time — you will know before we start. Homeowners in the 60035 area ask us this all the time.
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. A quick call sorts it out faster than wondering.
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 Lake 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.
One call reaches our local team — no national call center, no runaround. Serving Highland Park and all of Lake County.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550