Grenz Service Company LLC

"Came in and fixed my gas fire place in about two hours, this was after I had a different company out and they said it was unfixable. Great service would highly recommend. We will definitely be using Grenz to service all of our HVAC systems."

"Grenz Service Company recently did two jobs at my home. The first was installing a new HVAC system. Jim Grenz walked me through all the options and provided me with three quotes, each depending on the low, medium, or high grade HVAC that were recommended. They answered all my questions, did the install in one afternoon, and even entertained my questions and requests for system configuration tutorial. Awesome! The second was a repair to my gas fireplace. The pilot light had just aged, and my penchant for turning off the pilot after winter was not a good idea. Again, the service was excellent. I would highly recommend Grenz Service Company. Great products, great service, great prices."

"Great to have a knowledgeable HVAC technician work on our system. Same day service, promptly figured out the problem and explained everything to me in terms I could understand. Working with Jim from Grenz Service was painless and professional. Highly recommend this company!"

"Our air conditioner and furnace were 30 years old and both went out around the same time. Luckily my father in law gave me a good recommendation to call Grenz. He had hired them in the past and had great things to say. I can see why he said those things. They installed a brand new furnace and A/C all in one day. We got a quote from another company before hiring Grenz and they made no mention of needing to change and upgrade some of the duct work so that way our huge purchase isn’t hampered by the ducts. We then asked Grenz to give us a quote and I was so impressed with the attention to detail, use of actual math and measurements to determine what is needed for us, and the clarity it was communicated with so we could clearly understand what we need to do. I have 100% confidence they installed everything as well as you’d want a company to do. They were extremely courteous, smart, and professional. They also respond to any questions as quick as I’ve ever seen a company respond. The time in between the quote and actual install was super quick so that we weren’t left being sweaty and uncomfortable until they had time to do our job. Overall I have only great things to say about them and their work. It’s a father and son operation and you can clearly see that this is their life’s work based on the care and attention to detail. I’m glad we gave our business to them and will be giving it to them in the future for anything HVAC related."

"We recommend Grenz Service. Probably like yourself having AC installed is not a frequent experience. They took the time to educate me and show my options, which also included a cost savings recommendation on why a higher end unit that they offer would not have a good ROI for us here in Wisconsin. They proactively communicated on a possible late part which ended up arriving on time. For the day of service they called to see if they could come EARLY!, how often does that happen. I also explored other companies which took a while to call back and never called. I am happy with my service and will use Grenz again."