Best Air Conditioner in Milwaukee WI

Had them install a bar sink drain in my basement. They had to jack hammer my concrete floor, dig down and connect into existing plumbing. Did a fantastic job, let me look it over and take pictures before they sealed it back up and finished it with concrete. They noticed my sump cover was rusted so they replaced that too for a very reasonable price and sealed it all with silicon. Will definitely use them again!

I needed a Dryer vent hose hooked up, service technician Isaac Klahn did a great job and was very professional. I will recommend Hartlaub and Issac to family and friends.

I cannot say enough positive things about O & W. Our tankless heater was having issues. Omer came over within a day to take a look. He was able to provide me a lot of information about what was wrong with my unit so that I could make an informed decision moving forward. I ultimately had to replace my unit. When it came to the replacement, Omer was able to coordinate with an electrician to complete the job in an efficient manner. I know I will look to use O & W for my future heating and cooling needs. They will take the time to explain the situation so I can make the right decisions.

Jared came to our house to hook up our city water . He was very professional, informative, on time, and did a great job. We would definitely recommend them to anyone!

I had my furnace inspected by Kurt B. He was very prompt and professional. Highly recommend. I will use them again.

They did a good job fixing my mother-in-law's toilet.

Great team that did a fanatast8c and professional job installing my new AC unit..I will recommend them to others.

Even took the time to lay down blankets so their shoes wouldn't dirty up my floor.

Thanks all!

in this time of coronavirus, a handy person needs to be prepared. jerry was supposed to fix two switches, said he would wear a mask if i provided one. can he not be vaccinated working in a person's home???? and not have his own mask???? so we cancelled.