Had to have another provider correct installation of thermostat. Air Conditioner was never…read moreconnected properly

Incredible service all around. The staff are so communicative and friendly - it's as if they are…read moreall owners of Droegkamp! Since helping us with a furnace issue during the great freeze of 2025, we have been using them since. Our family won't look to anyone else now.

First time using Pro Serve. I needed to have my home's water supply switched from well to city…read more They were able to come out right away to assess the project, and the estimate followed shortly after. Unfortunately, the area experienced heavy rainstorms, which put our project on hold while they handled more urgent work. Once that backlog cleared, they were able to get back to me and complete the job. Super helpful people, both in the office and on-site. I would definitely recommend them to others.

They charged me more than my divorce attorney did. Shameful pricing. Don't hire these guys. I feel…read morerobbed.

We had a new furnace installed in 2023 and a new air conditioner in 2024. We signed up for the…read moreannual "Maintenance Agreement". Well, we are 100% satisfied with the quality of workmanship, professionalism, prompt service, friendly attitude and excellent products sold. We have never needed a service call on either machines to date. The annual maintenance is such an outstanding offer. It gives you peace of mind that your investment is being taken care of. I would love to recognize Ray Seeber, our technician for his outstanding quality of work. He was so informative, patient and respectful. Thank you Ray, we look forward to seeing you again. Kettle Moraine, you are certainly the BEST!!!! Mr.& Mrs. O'Brien

I was told the service visit would be $125. I was then charged an additional $175 for about 45…read moreminutes of the technician's time, for a total of $300. No repairs were performed and I was ultimately told that the AC was operating normally, without a solution to the temperature difference I had called about. I understand paying for diagnostic time, but $300 for this visit felt very expensive, and I wish the additional charges had been clearer when I scheduled. Update: I appreciate the business owner commenting on their charge process. The technician specifically noted charging me for 45 minutes, and I have an email time stamped 45 minutes after he started work. Also, none of the paperwork notes that the initial charge includes 30 minutes of time, which further emphasizes my point about transparency. Update: Update: I previously listed the wrong dollar amounts, so I am correcting them after reviewing my invoice. I was charged $149 for the diagnostic visit plus $130 for an additional 45 minutes of labor, for a total of $292.95 with tax. After the business stated that the technician spent approximately 75 minutes diagnosing my AC, I requested their timestamped records. Their records show that at 12:38 PM I signed their Customer Acknowledgement stating that "all work has been completed," and my invoice was emailed at 12:40 PM. However, they are counting time through 12:51 PM toward the 75-minute visit based on their tracking system. I disputed the additional labor charge and requested a refund. The company refused and offered only a credit toward future service, which I declined. My concern is not that diagnostic work costs money. My concern is being charged for diagnostic labor that I do not believe is supported by the company's own records.

Seriously, a one-stop shop for HVAC needs, from the front office, sales and to the installation of…read moretheir systems. We had an extremely tight time-frame with our need for a new AC Unit and a ton of hurdles, but neither of those things mattered, they were able to deliver exceptional value with a smile. I cannot say anything negative about our experience. Joe and Jana went above and beyond any HVAC Co, we have worked with.

I worked with Droegkamp to have a heating unit added to my garage. They came out and discussed…read moreoptions for the unit, its placement and how best to run the utilities to it. Once the unit came in, the installation crew did a great job getting things up and running and cleaning up the work site. Really pleased with Droegkamp!

First time here. I drive past this place all the time, but this was the first time I stopped in. I…read morehappened to need a light socket for a lamp, so I thought I'd check to see if they had one. It's a cute little store with a bit of everything. As soon as I walked in, I was greeted with a cheerful welcome and an offer to help. After explaining what I was looking for, they took the time to go through the options they had with me. Unfortunately, none of them turned out to be the right part. If you're looking for a friendly, personable shopping experience, this is a great place. What they may lack in selection, they more than make up for with outstanding customer service.

Since there seem to be some skewed reviews here .... My first experience with this company was…read moretoday. I needed parts for a medium sized building that had need for discontinued parts. The service detail and cost all lend themselves to my driving by many competitors to return again and again. It certainly appears that reasonable expectations are in order. I believe this out of the way stop has saved me hundreds of dollars and a dozen hours with less helpful more expensive competitors. It should also be noted that True Value Hardware on Washinton in Cedarburg made the referal to this business. To that young man I owe a debt of gratitude. There is always room for a first rate referal that solves a problem. You both have a slice that may have gone to bloated big box competitors due to your reasonably calculating the cost of a solution gone good. Thanks i look forward to seeing more of you in the future!

We used Mueller about 10 years ago for a new furnace and this summer when our air conditioning…read moreneeded replacement. They were very easy to work with & Zak did an excellent job explaining everything and gave easy to understand answers to all of our questions. They also were priced very very competitively and to be honest even if they had cost a little more it would have been worth it. They also were able to work around our schedule and get our unit in time for an event we had. I would highly recommend Mueller to anyone who is looking to replace their furnace or AC systems. In fact I would go as far to say it would be a mistake not to at minimum include them in you quote / search process.

Mueller Heating installed my furnace several years ago and did a great and affordable job. I…read morerecently had problems with my furnace and they walked me through steeps to try and fix. I wasn't able to resolve and had them come out. They quickly identified the issue and indicated it needed a part that had been back ordered. They pulled parts of a new unit they had in stock so they can get my unit running same day. Will always call Mueller.

Mike was really knowledgeable & worked fast! He did a great job for us. We will definitely use his…read moreservices for all our HVAC needs going forward. Easy to work with Quality job Great attitude

i called them on saturday, 6-13-2026 at 3:10pm for a monday, 6-15-2026 appointment from 11-1pm…read more they set the time. they said they would call me when they are 1/2 hour away. i called them at 12:50pm, they said they transformed my phone number. he then said he would be there in 40-45 minutes. i said ok. i called him back at 2pm, he then said he was coming from miller pkwy. i told him to forget it. i would never call a-1 milwaukee heating & cooling .

During July 2025, we hired this company to install a new fan in a utility room in our condo. Matt,…read moreone of the company's technician's, was immediately condescending and belligerent. Despite my repeated attempts to cool the conversation down, he continued being aggressive and condescending. I will never use this company again and will recommend others not do so also.

We contacted this company to repair an issue with our AC. The scheduling clerk was friendly and…read moreefficient despite high demand for service at that time. They came out on a Saturday to find mice had set up residence in our outside unit. They did a quick clean up and then checked the inside unit. They found the unit arcing and creating a fire hazard. They cut off the energy supply to avoid a fire. Next they quoted the cost to replace the AC system. A check around quickly showed that their price was better than competitors. We hired them for a replacement of the heating and AC systems. They were on time, friendly, professional, clean and explained everything. I highly recommend this company.