Louisville heating and cooling since 2004
Same-day furnace and AC repair across Louisville and Southern Indiana. You see the price before we start, and the $89 diagnostic comes off your repair.
Services
One crew for every system in your house. All makes and models, with common parts on every van.
Comfort Club
Members get a spring AC tune-up, a fall furnace tune-up, front-of-the-line scheduling and up to 20% off repairs. Plans start at $14 a month, and you can cancel anytime.
Upfront pricing
No hourly billing and no surprise parts list. Here is how every repair visit works.
We find the problem and test the whole system, not only the part that failed.
You get a fixed price for the repair on the tech's tablet. You decide. No pressure.
Approve the repair and the $89 comes off your bill. Plus and Total members pay nothing.
If a repair we made fails within a year, we come back and fix it free.
21-point safety and efficiency check, carbon monoxide test and a new standard filter. Book by November 30, 2026.
Code FALL79Financing
Based on an $8,000 system at 7.99% APR for 120 months, with approved credit. 0% plans for 18 months too.
Estimate my paymentReviews
Average of 1,860 Google reviews. 97% of customers say they would book us again.
"Our furnace quit on a 12-degree night. Devon was at the house by 9 PM, showed us the price on his tablet, and we had heat before 10."
"Three companies quoted us. Cardinal was the only one that measured every room. The new system runs quieter and our July bill dropped $64."
"The Club pays for itself. They call us when the tune-up is due, so we never forget, and our last repair was 15% off."
Your techs
Every tech is background-checked, drug-tested and EPA 608 certified. You get a text with their photo and name before they arrive.
Owner, master technician
Started Cardinal in 2004 with one van. Still answers the phone on snow days.
Comfort advisor
Designs new systems room by room and gives you three options, with prices, on paper.
Service technician
Nine years on furnaces and heat pumps. Explains the fix before he starts it.
Service area
Same-day service in every area below. No trip charge anywhere on the list.
Questions
$89 for the diagnostic visit, any time of day. You get a flat-rate price for the repair before we start, and the $89 comes off when you approve it. Comfort Plus members pay $0 during office hours, and Total Comfort members pay $0 anytime.
Emergency visits after 7 PM and on Sundays carry a $75 after-hours fee. Total Comfort members never pay it.
All major brands of furnaces, heat pumps, air conditioners and boilers. Every van carries common parts, so most repairs finish on the first visit.
Multiply the system's age by the repair price. A result over $5,000 usually means replacement is the better buy. Try the repair or replace calculator.
Yes. Plans run from 18 months at 0% to 120 months, with approved credit. Estimate your payment in under a minute.