Family-Owned · Independent · 20+ Years

Plainfield, IL Heating & Cooling Services Built Around Your Home

Trusted HVAC contractor in Plainfield, IL for furnace repair, AC repair, AC replacement and furnace replacement. Serving Naperville and Chicago’s western suburbs.

Furnace RepairAC RepairHVAC ReplacementSeasonal Maintenance

(630) 318-62465.0 Google Rating

Independent by choice.
Local by nature.

20+

Years Serving Local Homeowners

5.0

Google Rating

0

Private Equity Owners

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

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.

All cooling services

Heating

Furnace Repair, Replacement & Heating Maintenance

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.

All heating services

Full-service HVAC

Complete HVAC service, from repair to replacement


FortHouse Heating & Cooling provides residential AC repair, furnace repair, HVAC replacement, preventive maintenance, heat pump service, ductless mini-split installation, and indoor air quality solutions for homeowners across Plainfield, Naperville, and the surrounding suburbs. Our technicians service all major equipment brands and tailor every recommendation to the home — not a sales quota.

Explore all HVAC services

What people say

See Why Homeowners Give FortHouse 5.0 Stars

Read all reviews on Google
We recently had our air conditioner and furnace replaced, and the entire experience was excellent from start to finish. The team was professional, knowledgeable, and took the time to explain all of our options without any pressure.

Michael Fabian

Local Guide · AC & furnace installation

The technician showed us all his tests, and thoroughly inspected the unit. We elected to replace our full system with FortHouse — they were able to do the install the next day. We will be using them from now on.

Nova G.

AC replacement · Montgomery, IL

I've worked with FortHouse for a couple years now. If you're in need of HVAC services, they're the guys to call. Honest, professional, and reasonable pricing.

Francis Linek

Local Guide · Repeat customer

How we work

Our HVAC Service Process:
Four Steps, No Surprises

The complaint we hear most about other contractors is not price. It is finding out the price afterward. Here is the whole sequence.


You Call, We Listen

Describe the symptom. We will tell you on the phone whether it sounds like a worn capacitor or a conversation about replacement.

Same-day appointments when availability allows

We Diagnose and Measure

Static pressure, superheat, subcooling, amp draw. Real readings, written on the invoice, so you can hold us to them.

Diagnostic typically $89–$150, general range

You Get a Number, Then Decide

Flat-rate pricing on paper before any work starts. If there is a cheaper path that we would take in our own house, we tell you about it.

No work begins without a signature

We Fix It and Prove It

Post-repair readings go on the invoice next to the originals. You can see the delta closed, not just take our word for it.

Built for the long-term relationship

Resources

HVAC Answers for
Chicagoland Homeowners

All resources
Buying Guides

When to Replace Your Air Conditioner: 4 Signs Beyond Its Age

ENERGY STAR puts the replacement threshold at 10 years old, but age alone doesn't tell the whole story. Here are the signs that actually mean it's time — rising bills, uneven cooling, and the noise that means a component is already failing — plus what replacement really costs.

9 min read

Where we work

HVAC Service Areas Near Plainfield, 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

TraneLennoxCarrierGoodmanBryantRheem

Common questions

Frequently Asked HVAC Questions

Do you offer emergency HVAC service?

Yes — 24/7, including nights, weekends, and holidays. A no-heat night in January or a no-AC day in July doesn't wait for business hours.

Read more about our emergency HVAC service

What areas do you serve?

Plainfield, Naperville, Yorkville, Bolingbrook, Oswego, Wheaton, Lisle, Minooka, Shorewood, and Aurora. If you're just outside that list, call and ask — we make exceptions for a reasonable drive.

See our full service area

How much does a diagnostic visit cost?

Typically $89–$150, depending on the system and symptom. That's a real diagnostic — pressures, amp draw, a written readout — not a flat trip charge.

See all HVAC services

What brands do you install and service?

Trane, Lennox, Carrier, Goodman, Bryant, and Rheem, along with most other major residential equipment.

Learn more about FortHouse

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

Requests are monitored during business hours

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