Family-owned HVAC service across Waukesha, Milwaukee, and Ozaukee counties. Flat-rate pricing, licensed techs, and same-day appointments — every day of the year.
Whether it's a broken furnace at 2am or a routine tune-up, we show up in a marked van, in uniform, on time.
Gas, propane, and electric furnaces — most repairs completed on the first visit.
Central AC, mini-splits, and heat pumps from Trane, Carrier, and Bryant.
Cleaning, sealing, redesign, and new installs for whole-home comfort.
Whole-home humidifiers, HEPA filters, and UV air purification.
21-point precision tune-up. Included free with our Comfort Club membership.
High-efficiency furnace + AC installs with 10-year warranty and financing available.
You get the price before we start the work. Every job, every time — even at 3am on a holiday.
Real humans answer 24/7 — never a call center.
We diagnose on-site and give you the exact price before any repair.
Fully stocked trucks mean 92% of repairs are done on the first visit.
NorthStar has been keeping Wisconsin families comfortable since 2008. If you're within 30 miles of Waukesha, we're your neighbors.
Serving Wisconsin
Homes served
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Emergency? Call (262) 555-0158 — we answer 24/7. Otherwise pick an available time below.
Same-day appointments available.