I have nothing but good to say about Carew Heating and Air Conditioning, and as a Realtor that has…read morerecommended them to a fair number of clients now, I'm really happy to be able to point the people I'm working with their direction for service, which happens a lot in my world. I'd count them in my top half dozen businesses that I'll offer to my clients for work. There are numerous other HVAC places I've hired in the past on behalf of clients. A couple have even been quite good, but none have risen to their level of 1) expertise, 2) ease of working with, politeness, 3) promptness, timely completion, and 4) value. I could give several, but one recent example: I was trying to get a home warranty repair on a nearly new heat pump/AC unit, that evidently had been improperly installed. This was just not getting done...the places dispatched just simply couldn't fix it, despite all seemingly good effort and multiple visits. I called Mark, and it just flat gets done. Just like that. Happy client, happy Realtor, happy happy joy joy. They're located in Watertown, WI (Jefferson County), which is just a little west of Oconomowoc, though they'll travel a decent distance. I've had them work as far north for me as Hustisford and as far south as Eagle. As always, please note, I get exactly nothing from anybody I recommend, but the knowing that I can do it with confidence is worth plenty to me and my work.

Excellent service! Our furnace stopped working overnight. I contacted Carew first thing on a Friday…read moremorning, and they had a technician at my door by 8:30AM. He found the issue and in the process discovered an unrelated, very serious Carbon Monoxide issue. All was fixed and cleaned up same day. Very thorough and reasonably priced. I will be contacting Carew again in the Fall for my next boiler check-up. Highly recommended.

I just really appreciated what seems like an honest assessment. I was looking for a second opinion,…read morebecause two other companies had recommended major, costly repairs or replacement for my gas furnace. The Grenz folks came, carefully looked at the unit, and said, "If it were my furnace, I wouldn't do anything. It is running the way it's supposed to." This second opinion cost me something, naturally, but it also saved me between $5,500 and $19,500 (two quotes from the other two companies). Jim seems like a straight shooter. I'd recommend you give these folks a try.

He called me back and talked me through the fix. He did not wait to come out and wouldn't take any…read morepayment for his assistance. He clearly knew what he was doing. He was able to talk me through several troubleshooting exercises without seeing the gas fireplace itself. If I have any HVAC or fireplace needs in the future, I will definitely use Grenz

We have done business with Kleckers on 2 occasions. First they installed a brand new furnace with…read morean Aprilaire air filtration system (about 2 years ago) and a new thermostat and that has worked flawlessly and is easy as it gets to operate. Then late this Spring we had them replace our old central air conditioner, and that works like champ also. They are very professional and take care of their customers - if anything is wrong they will fix it. Both installations went flawlessly for us and the units work perfectly. A++

AS A DISABLE Vietnam Military Veteran I was robbed, scammed, by Klecker's Heating and Air…read moreConditioning demanded $700.00 for one of their Technician who worked on my Air Conditioner for a little over two hours and never fixed it. I had to call someone else who only charged me $176.00 and fixed it. Klecker's Technician must of hated his job. He was very RUDE, DISRESPECTFUL, and kept wanting to use my bathroom while smoking a pipe. If he hates his job so much, why is he still working their.

I have dealt with a lot of furnace and water heating guys over the years and I THANK GOD I found…read moreMARK. He is one of the most honest and hard working guys I met. I had a furnace go last year and gave him a call because friend said he did good work. He was out the next day and walked us through what would fit the house and what would fit my pocket book. Last week my HOT water went and he gave me a call back and said he was in the area next day. He was on time and fixed it in a flash. He is also clean and handles himself as a true gentleman. I am over in Beaverdam and I recommend Mark anytime ! Great experience both times

Fiedler heating has been repairing my furnace for almost 9 years. He's always been quick to respond…read moreeven though I don't have children he makes an extra effort to get to homes with failed heating for families that have children. Even when my furnace wasn't installed by him originally he managed to keep it running until I ended up replacing my my furnace with a new one that of course he installed. I could not be happier with his service and I'd recommend it to you. Mark gave me a great deal on a high-efficiency furnace that replaced my 24-year old one and reduce my heating bill.

Cardinal has been the BEST company I've experienced so far at my house. I've also used Action--they…read morewere terrible in comparison. 1st call to Cardinal was in a panic with the sudden loss of AC in a 90 degree day. 5 animals in the home. The person with whom I spoke understood how dangerous of a situation this was and a service person was scheduled that day. 2nd call was for electrical work--not urgent but they happened to be able to squeeze me in on the same day which was probably rare but amazing! Best parts of this experience: 1. Friendly and empathic front team who got me scheduled ASAP. 2. Text prior to the service person's arrival with their pic and some info to help personalize this 'stranger' 3. The service people themselves--extremely competent, focused, and very personable. I only wish they serviced commercial properties so I could have them out to my business!

Their quote was 2.5 times higher than two other local businesses!! Absurdly high! No way was the…read moreamount of work I was estimating worth the same às a slightly used car! $9k for what is probably 2-3h work is laughable!!! This makes me wonder what they are charging other people who haven't researched the things they want to the same degree I have. It's almost criminal. Their estimator was very pleasant, though. And their communication is quite good. Maybe that's where the extra $5k is required!!!.... Complete BS

We called Pat's to diagnose and repair our boiler, which decided to crap out on us on a Sunday. The…read moretech, Michael quickly gave us a call back, and within an hour he arrived at our place. Michael not only diagnosed and repaired the boiler in record time, but he was also kind enough to take the time to thoroughly explain how a hydronic heater works, and all of the necessary maintenance involved. Michael was extremely knowledgeable with all things HVAC. We were charged a very fair price for the labor, especially considering the weekend callout. Fast forward a few weeks, and we called out Michael to update some of the heater controls. Again, Michael provided outstanding service and corrected a few other issues with our hydronic system. Still highly recommended!

Our AC went out a couple weeks ago and we contacted Pat's to come out and fix it. Brady showed up…read moreat the time I was told he would be here and had it up and running in about 30 minutes. When he was done I asked if he could also do the regular maintenance on it because we had never had it done. He said he couldn't that day but if I called the office and signed up for the yearly maintenance I could save 10% on the service call for that day. I called and signed up. Today was the day he had to come and do the maintenance and again he showed up at the scheduled time. Very polite and professional every time. If you ever call Pat's, ask them to send Brady. I think we paid less than $600 for the repair and yearly maintenance on both our AC and furnace.

WOW!! RUN!! Don't walk!! These guys are AMAZING!! So.... I live in a condo complex that…read morewas built in 1988. The owners were instructed that we needed to have our dryer vents brought "up to code" as most of the vents had become disconnected... and were venting somewhere inside the building.. but not venting out side the the building. Argh... a challenging task for sure. I called several companies to come out and give me an estimate. Every single company I called said "I will find your disconnect, but you are responsible for replacing your drywall, painting, etc" Not good news. Then... Ducts On Call came out... and they spent 4 hours researching... trying to figure out which vent was mine that exited out of the back of the building. But since every single dryer vent was disconnected in the interior of the building... there was NO way they could figure it out without tearing up the ceiling in mine, and my neighbors units. I was SO frustrated. But then Nick suggested we put in a new vent duct from my unit straight out the front of the building. It was my only option. He said we would need to schedule a time in the future... but I told him I needed it done in the next 3 weeks. He said... "I will make this happen for you" Well for starters... he DID NOT CHARGE ME for the 4 hours he spent trying to figure out which vent was mine. HE SAID... "I didn't solve the problem.. so I will not charge you" What?? 4 hours of your time for free?? Moving forward..... Nick and his crew came back 2 weeks later to install my NEW, up to code dryer duct on a new path out the front of my condo. I was SO not looking forward to having my ceiling ripped open to have the duct installed. So the day had come. Nick arrived before his scheduled time and he went to to work. I asked him... "How much of my ceiling do you need to open up?" He said... "I'm not opening your ceiling... I'm going to drill a hole in the exterior of your building, and slide the new duct straight back to your dryer connection" I was beside myself! I could go on and on... but let me tell you, this guy is the real deal!! He is incredibly gifted at what he does... super friendly... hard worker, and gets the shit done!! For what I thought was going to be a day of HELL... turned out to be a day of BLISS. I CAN NOT recommend this company any more than I do!! They were AMAZING... and the job was smooth, and quick, and so much easier than I dreamed it would be. Let me state again... that I called several companies to get the job done.... and these guys were one of the newer companies I called.... but I hit the jackpot!! Trust me!! If your need Duct work done... these guys were stellar from start to finish. And no... I'm not related to them... I'm not his high school friend... and I knew nothing about them, but I took a chance... and boy... am I glad I did. Amazing! THESE GUYS KICK ASS!! Give them a try!! Thank You Ducts On Call!!

OMG, these guys are great! Nick and Kim are awesome! My son in law blew out our dyer vents and…read moredidn't get the pipes put back together. Took Nick & Kim like 5 minutes to reattach everything at no charge!

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.

They were recommended by a friend of mine, and they were both very inexpensive and prompt. They…read morereplaced my furnace and air conditioner, replaced the condenser outside and helped upgrade our ductwork. Mark is really nice and I trust him implicitly.

I had Mark's heating quote a project for me along with 5 other competitors. To start things off,…read morethe person that answered the call was helpful and thankful for the opportunity. Mark made himself available to my time so he could stop by and understand the project. His quote came back quickly and he was able to start work in a reasonable time. He always returned phone calls and was a true pleasure to work with. Mark's work quality is excellent AND his prices were the best I found! Excellent Job Marks Heating!