Family-owned · Serving Wheaton, IL
Heating & Air Conditioning Services in Wheaton, IL
Your home is your fortress. We protect your comfort. Wheaton's been the DuPage County seat since 1867 — the permit office isn't a mystery to us, it's a regular stop.
Family-owned
Built on trust. Not private equity.
Premium service
Quality workmanship you can rely on.
Honest pricing
Straightforward. No games.
Always on call
Emergency calls answered 24/7 — even Sundays.
Cooling
AC Repair, Installation & Maintenance in Wheaton, IL
We service air conditioners, heat pumps, and ductless mini-splits throughout Plainfield, Naperville, and nearby suburbs. When your home stops cooling, we provide same-day diagnostics whenever availability allows.
AC Repair
$150–$600AC Installation & Replacement
From $3,800Ductless AC Installation & Mini-Splits
From $3,000/zoneAC Maintenance
$89–$150
Heating
Furnace Repair, Replacement & Heating Maintenance in Wheaton, IL
Our heating services cover furnaces, heat pumps, tune-ups, and the combustion safety checks that come with burning gas indoors. For no-heat emergencies, we answer the phone 24/7.
Furnace Repair
$150–$600Furnace Installation & Replacement
From $3,500Heat Pump Repair & Installation
From $4,500Heating Maintenance & Tune-Up
$89–$150
Why local actually matters here
Local HVAC service for Wheaton homes.
Wheaton has been the DuPage County seat since 1867, so the county courthouse and permitting office are right in town, not a drive away. That matters on installation day — we're not guessing which office to file with or how the inspector rotation runs.
Wheaton's roots go back to the 1830s, and Wheaton College has anchored the center of town since 1860. A lot of the housing near that historic core predates central air by decades, which is a different job than the postwar and modern subdivisions further out — we treat them differently instead of quoting them the same.
At just under 54,000 residents, Wheaton is one of the larger cities we serve. Same-day still means same-day; a bigger city just means tighter scheduling, not a longer wait.
What we handle in Wheaton
Everything FortHouse does, available to Wheaton homeowners directly — not routed through a regional dispatcher two counties over.
AC repair & AC maintenance
Same-day AC repair when the air stops running cold, and AC maintenance scheduled tight across a city of nearly 54,000 — one of the larger we serve — with real numbers on static pressure, refrigerant charge, and amp draw, not just a filter swap.
Furnace repair & heating maintenance
Furnace repair and gas furnace repair with a combustion safety check on every visit — the historic core around Wheaton College predates central air by decades, a different job than the postwar and modern subdivisions further out.
HVAC installation & replacement
Full HVAC installation and replacement, Manual J–sized and filed straight through the DuPage County seat's permitting office, which has been right here in Wheaton since 1867.
Ductless mini-split installation
Ductless AC installation and mini-split installation for additions and rooms in Wheaton's older homes near the historic core that were never built with ductwork to reach them.
Common questions
Wheaton, IL — frequently asked.
What HVAC services does FortHouse offer in Wheaton, IL?
AC repair, AC maintenance, furnace repair, heating installation, full HVAC replacement, and ductless mini-split installation — the same services listed on our services page.
See all HVAC servicesDo you offer emergency HVAC repair in Wheaton?
Yes — 24/7, including nights, weekends, and holidays. A furnace failure in January or an AC failure in a July heat wave doesn't wait for business hours.
Read more about our emergency HVAC serviceHow much does furnace repair cost in Wheaton, IL?
Most furnace repairs run $150–$600, depending on whether it's an ignitor, a flame sensor, or something bigger like an inducer motor. Every visit includes a combustion safety check at no extra charge.
Read the full furnace repair guideDo older homes near downtown Wheaton need different HVAC service?
Often, yes — homes built before central air existed have usually been retrofitted at least once, and the ductwork from that retrofit doesn't always match what a modern system needs. We check that history before quoting a repair or replacement, not after.
See how HVAC replacement pricing and timeline workWhat areas near Wheaton do you serve?
Plainfield, Naperville, Yorkville, Bolingbrook, Oswego, Lisle, Minooka, Shorewood, and Aurora, alongside Wheaton. If you're just outside that list, call anyway — we make exceptions for a reasonable drive.
See our full service areaHow we work
You call, we diagnose with real measurements, you get a flat written number before anything starts, then we fix it and put the post-repair readings on the invoice next to the originals. See the full four-step process.
Where we work
HVAC Service Areas Near Wheaton, IL
We keep the radius tight on purpose. A tech who is twenty minutes away can actually get to you the same day, and already knows how the housing stock out here is built.
Not on the list? Call and ask — we make exceptions.
We install and service
Book a visit
Tell Us What the System Is Doing
Describe the symptom and we will tell you what it usually means, what it typically costs, and the earliest available appointment. No obligation on the call.
- Weekdays
- 7:00 AM – 7:00 PM
- Saturday
- 8:00 AM – 4:00 PM
- Emergency
- 24 hours, 7 days
- Ownership
- Family-owned