Upgrade to Smarter Comfort
No heat, no cooling or a system that's past its best? We fix it fast and explain everything in plain English.
- Free, no-obligation estimate
- Clear, upfront written quote
- Clean, tidy work every time
- Written workmanship warranty
Trusted by businesses and homeowners across Wisconsin
Heating, Cooling & Fresh Air
Choose the right system
We install every major heating and cooling system and explain the options during your estimate.
Compare SystemsCentral Air
Whole-home cooling
Heat Pumps
Heating and cooling in one
Gas Furnaces
Reliable winter warmth
Ductless Mini-Splits
Room-by-room comfort
Your Partner for Year-Round Comfort
Zenith has kept homes across Madison comfortable since 2003. We're a local, family-run team that believes in honest advice, quality equipment and doing every job properly the first time.
Learn MoreOur Mission
To keep every Madison home comfortable, safe and efficient with honest advice and careful work.
Our Vision
To be the most trusted local name in heating and cooling, recommended by neighbours for generations.
Our Values
Honesty, skill and respect for your home, from the first call to the final check.
Hundreds of Happy Homes
Heat Pump Install
Replaced a 20-year-old AC and furnace. 3-ton system, 1 day on site.
Start a similar projectAC Replacement
New condenser and coil. High-efficiency unit, 1 day on site.
Start a similar projectFurnace Repair
Ignitor and flame sensor replaced. Same-day fix, 2 hours on site.
Start a similar projectDuctwork Upgrade
Sealed and rebalanced ducts. Whole home, 2 days on site.
Start a similar projectTrusted by Our Neighbours
“Our AC died on the hottest day of the year. They had a tech here in two hours and cool air by dinner. After the duct cleaning our house feels fresher and the upstairs finally stays cool.”
Comfort in 4 Simple Steps
Book a Visit
Pick a time that suits you, including evenings.
Honest Diagnosis
We find the real problem and explain your options.
Expert Repair or Install
Our technician completes the work cleanly and safely.
Proudly serving Madison and nearby
Good to Know
Are your technicians licensed?
Yes. Our technicians are licensed, insured, background checked and trained on all major brands.
Do you offer emergency repairs?
Yes. We offer same-day and after-hours repairs for no heat, no cooling and other urgent problems.
Do you offer financing?
Yes. Approved homeowners can spread the cost of a new system with low monthly payments.
How often should I service my HVAC system?
Twice a year is ideal: your AC in spring and your furnace or heat pump in autumn. Regular tune-ups prevent most breakdowns.
Should I repair or replace my system?
If your system is over 12 to 15 years old or needs frequent repairs, replacing it often saves money. We'll give you honest options.
Too Hot or Too Cold? We Can Help
Don't wait for a breakdown. Book a service or get a free quote from our local team today.
Get Your Free Estimate
Fill out the form and our team will get back to you within 24 hours.