DeKalb County · ZIP 60115
Apex Climate Control has been inside DeKalb homes home of Northern Illinois University — and if there's one thing this town's housing teaches an HVAC company, it's not to assume anything until you've seen the mechanical room.
What we see here: 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. That range is exactly why we diagnose and quote from the actual house in front of us instead of a formula.
The climate does the rest. DeKalb County homes run furnaces near-continuously from Thanksgiving into March, then pivot to humid 90-degree cooling season — a duty cycle that finds every weak part and every dirty coil. Regular maintenance and clean airflow aren't luxuries here; they're how equipment survives.
Landmarks aside — and DeKalb has good ones, from the NIU campus to downtown DeKalb — what matters to us is the block-by-block reality of the homes. Our North Aurora shop is 28 miles away — close enough that DeKalb calls never sit at the bottom of a regional route list.

















Good to know
Yes — the whole town, home of Northern Illinois University, across ZIP code 60115. Our North Aurora shop is 28 miles away — close enough that DeKalb calls never sit at the bottom of a regional route list.
Everything on our board: AC repair, installation, and maintenance; furnace repair, installation, and heating tune-ups; air duct cleaning with video inspection and sanitizing; and dryer vent cleaning. Call 630-486-0401 and tell us what's going on.
DeKalb is about 53 minutes from our shop. No-heat and no-cool calls jump the line in extreme weather — call for a real arrival window.
Through November 30, 2026: $99 AC tune-ups, $175 off a single-unit install, $350 off a full system, and 15% off when you bundle air duct and dryer vent cleaning. Mention the offer when you call.
Heating, cooling, or air quality — one call covers it. Local crew, DeKalb County.
Or email support@apex-climate-control.com · Financing available with credit scores as low as 550