3 days ago
Spring AC tune-up special: $89
Get ahead of summer. Our spring tune-up includes coil cleaning, refrigerant check, and a full system inspection. Book before May 15.
Google Business Profile
Answering calls now · 24/7 emergency service
Furnaces, AC, and everything in between. Done right the first time.
Family-owned, licensed, and serving the Illinois Valley since 2008. Same-day service most days. Emergency calls answered 24/7.
Emergency? Same-day service, call (815) 555-0134Licensed & insured
BBB A+
Carrier Factory Authorized Dealer
Services
What we do.
Residential heating and cooling for homes across the Illinois Valley. One call, one truck, the job done.
Furnace Repair & Install
Gas, propane, and high-efficiency systems from every major brand.
Learn more →Heat Pumps
Energy-efficient heating and cooling in one system, sized for Illinois winters.
Learn more →Ductless Mini-Splits
Room-by-room comfort for additions, garages, and older homes without ducts.
Learn more →We service all major brands: Carrier · Trane · Lennox · Goodman · Rheem
Licensed and insured.
Illinois-certified technicians, full liability coverage. Every truck, every visit.
Upfront pricing.
Flat-rate diagnostics, no surprise fees. You know the number before we start the work.
Local and reachable.
Dave answers the phone. Always has. We live in the towns we serve.
We stand behind the work.
Every install comes with a 1-year labor warranty. If something isn't right, we come back and make it right. No charge, no hassle.
Reviews
What our customers say.
4.9based on 287 Google reviews
Sarah M.
2 weeks ago
Furnace went out on a Saturday night. Cardinal had someone here within 2 hours. Honest about the repair, fair price. This is how it should be done.
AI · REVIEW ASSIST
Cardinal Heating & Cooling (owner)
Thanks Sarah. Glad we could get you warm again quickly. Give us a call anytime.
Replied in 3 minutes.
Tom R.
3 weeks ago
Had Cardinal install a new AC system last month. Crew was on time, cleaned up after themselves, and walked me through everything. Quote matched the final bill to the dollar.
AI · REVIEW ASSIST
Cardinal Heating & Cooling (owner)
Appreciate the kind words, Tom. Enjoy the cool summer ahead. We're here if you need a tune-up down the road.
Replied in 2 minutes.
Linda K.
5 weeks ago
Signed up for the maintenance plan two years ago and it has paid for itself. They catch small things before they turn into a 2 a.m. emergency. Great peace of mind.
AI · REVIEW ASSIST
Cardinal Heating & Cooling (owner)
Thank you Linda. That's exactly what the plan is built for. See you on the next visit.
Replied in 4 minutes.
Mike P.
7 weeks ago
Called for an annual furnace tune-up. Tech was friendly, knew what he was doing, and didn't try to upsell me on stuff I didn't need. Hard to find that these days.
AI · REVIEW ASSIST
Cardinal Heating & Cooling (owner)
Thanks Mike. Honest work is the only kind we know how to do. See you in the spring for the AC check.
Replied in 5 minutes.
AI Review Assist is part of every DeezeSites site.
Updates
From Cardinal.
1 week ago
Reminder: change your filter
Most homes need a new 1-inch filter every 60-90 days. A clogged filter is the #1 reason furnaces fail in February. Quick swap, big difference.
Google Business Profile
2 weeks ago
Adding a room? Think mini-split.
Adding ductwork to an addition or finished basement gets expensive fast. A ductless mini-split installs in a day and runs all year.
Google Business Profile
3 weeks ago
We're a Carrier Factory Dealer.
That means factory training, factory parts, and the strongest warranties Carrier offers. Ask us about their lifetime compressor coverage.
Google Business ProfileOur work
Drag to see the difference.
A few recent jobs from around the Illinois Valley. Drag the slider on each one to see what the system looked like when we got there and what we left behind.
Before
After
Replaced a 22-year-old furnace with a high-efficiency Carrier 59SC5B.
Before · After
Reworked tangled basement ductwork and insulated the trunk lines.
Before
After
Installed a proper split-system AC on a home that had been running window units.
Before · After
Added a ductless mini-split to a finished garage workshop.
Before
After
Swapped a failing 14-year-old condenser for a new Carrier outdoor unit.
Before · After
Rebuilt a poorly-sealed return duct with proper mastic sealing throughout.
Dave Mueller, owner
About
Run by Dave Mueller.
Based in Princeton.
Dave grew up in Bureau County and has been working on furnaces and AC systems for more than 15 years. He took over the family business in 2014 from his father-in-law, who started Cardinal back in 2008.
The shop is small on purpose. Six technicians, four trucks, and a phone that gets answered by someone who actually knows the schedule. That's how we keep service fast and prices honest.
"If I wouldn't put it in my own mom's house, I'm not putting it in yours."
Service Area
Who we serve.
We cover Bureau and LaSalle counties and a few towns just outside of them. Click your town to see how we work in your area.
HQ
Princeton
Bureau County
Peru
LaSalle County
LaSalle
LaSalle County
Spring Valley
Bureau County
Ottawa
LaSalle County
Streator
LaSalle County
Mendota
LaSalle County
Walnut
Bureau County
Tiskilwa
Bureau County
Wyanet
Bureau County
Bureau
Bureau County
Dalzell
Bureau County
...and surrounding towns. Not sure if you're in our area? Just give us a call.
Contact
Get a free estimate.
Tell us what's going on and the best time to reach you. We'll call back with a real person, no phone tree.