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Serving Mukwonago · southern Waukesha County
Furnace and AC repair in Mukwonago, WI
From newer subdivisions to older homes near the village center and houses around the Phantom Lakes, we find the real cause and give you a flat-rate price before any work starts.
★ 4.9 on Google · 440+ reviews | BBB A+ Accredited | Wisconsin-registered HVAC contractor | Veteran-owned | Since 2014
About 40 minutes away
From our shop in South Milwaukee
Same-day in most cases
No-heat and no-cool calls get priority
Flat-rate price first
You approve the number before work starts
24/7 emergency line
Rings Mike’s cell, nights and weekends
What we see in Mukwonago homes
Mukwonago sits along the Mukwonago River and wraps around Upper and Lower Phantom Lakes. Most of the village is in Waukesha County, with a small part in Walworth County. The village grew about 12 percent between 2010 and 2020, so newer subdivisions now sit alongside older homes near the village center and houses around the lakes.
Newer two-story homes usually have one builder-sized forced-air system, and the upstairs is commonly the warm floor in summer. Lake and older homes often have additions, crawlspaces or sunrooms that the original ductwork was never meant to reach.
What we do in Mukwonago
Furnace repair and replacement, 80% and high-efficiency
Central AC and heat pump repair and replacement
Airflow fixes for warm upstairs rooms and additions
Ductless mini-splits for sunrooms, bonus rooms and finished lower levels
Water heaters and humidifiers
How we work in Mukwonago
We find the real cause, put the readings in front of you and quote a flat-rate price before any work starts. When a builder-grade system is near the end, we show you the repair-or-replace math, and a new system is sized with a load calculation instead of copied from the old label.
Emergency right now? Call or text 414-595-5175, any hour.
Request service or a free replacement estimate
We call you back during business hours. You get a flat-rate price before any work begins, and repairs are guaranteed for one year, parts and labor.
Rather pick a time yourself? Book a tune-up, free estimate or repair visit online, any time of day.
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Nearby areas we serve
The shop
3206 9th Ave, South Milwaukee, WI 53172
Installs, estimates and non-urgent repairs: Monday to Friday, 7 a.m. to 5 p.m., weekends by appointment. Emergencies: 24/7, any day.
How it works
What happens when you call A-1
1
You call or text, any hour
A person answers 414-595-5175, not a call center. We ask a few quick questions and give you a real arrival window, not a guess.
2
We find the actual problem
We test before we replace anything and show you the readings, so you can see what failed and why.
3
You approve a flat-rate price
You get the price before any work starts, with repair and replacement options in writing when both make sense. No hourly surprises.
4
We fix it, test it and clean up
Most repairs are finished on the first visit. We test the system, clean up after ourselves and explain what we did.
Good to know
Mukwonago questions we hear most
Do you serve both the Waukesha County and Walworth County parts of Mukwonago?
Yes. The whole village is in our service area, along with the homes around the Phantom Lakes, and the service call costs the same as anywhere else we work: $99 on weekdays, $179 nights, weekends and holidays.
Our two-story’s upstairs is always warmer than the main floor. Do we need a bigger AC?
Usually not. The fix is more often return air from the upstairs, duct balancing or zoning. We measure first and tell you what will actually change the temperature up there.
How fast can you get to Mukwonago?
Mukwonago is about 40 minutes from our South Milwaukee shop. No-heat calls get priority, we give you a real arrival window when you call, and the emergency line is answered 24/7.
Reviews
What our customers say
Word-for-word excerpts from Google reviews, names shortened. Overall: 4.9 stars from 440+ reviews.
5 out of 5 stars
“A-1 Milwaukee Heating and Cooling was efficient and fast! I appreciate all they have done to keep me and my family cool in the summer and warm in the winter.”
Steven T. · Heating and cooling · Google review
5 out of 5 stars
“Five stars to Mike and Klod, Best guys in the market and straight forward! … They will take care of you with honesty and integrity!”
Jamal B. · Service call · Google review
5 out of 5 stars
“Was on time and was charged exactly what my estimate was. Mike was awesome and the install team was professional and cleaned up when they were done.”
Scott C. · Installation · Google review
Read them all on Google
These are a few highlights. Google shows every review, including the critical ones, and we reply to them. Judge us by the whole record.
Ready when you are: