Grenz Service Company is a Waukesha and Jefferson County area favorite, bringing friendly, dependable heating, cooling, and commercial refrigeration solutions to businesses and homes. Led by Jim Grenz, Jr. and Jim Grenz, Sr., our family-run company provides expertise, integrity and a personal touch. We specialize in: - Commercial and residential service on all makes and models - Air conditioner and furnace repair - Maintenance on all brands of air conditioners, heat pumps and furnaces - One-stop installation and service on all commercial refrigeration equipment, including walk-in and reach-in freezers and coolers, back bars and ice machines - Gas fireplace service and maintenance Our helpful, continuously-trained staff is always on standby to answer any questions, and we offer the proven quality of top brand names to ensure that you get the most performance, value and peace of mind possible. We are an independent dealer of American Standard Heating & Air Conditioning products and excel in their installation and service. Expert Solutions. Reliable equipment. Easy-to-talk-to people. For heating, cooling and refrigeration that delivers lasting results, you've got friends at Grenz!
Jim and his team replaced the a/c units in a timely and convenient manner. They are always friendly and explain in an easy to understand way. Very happy to recommend Grenz Service
Grenz Services identified issues with our furnace while conducting seasonal service checks and cleaning. They also identified a leak in our air conditioning system during the same visit. The technician helped setup a system review for the Spring of 2021. Grenz Services conducted an in home review of our heating and cooling needs and offered two options for us to choose from. Each option was explained in detail helping us to make an informed decision for our needs. They setup the installation and removal of the old system. The crew left our house cleaner than when they began the work. They were in and out in about 5.5 hours. I will recommend them to anyone that I know is looking for HVAC work.
I really appreciated the technicians honesty and accurate diagnostic skills. The work was done quickly and I now have heat again.
Jim was able Fix are30-year-old gas fireplace and saved us a lot of money.Other companies quote a lot more money. Jim’s knowledge and personality is simply amazing
Furnace went out overnight. Jim gas it fixed by noon.
Prompt- professional- very courteous- explained what was wrong- and what he was going to do to fix the problem.
Prompt- professional- very courteous - explained what was wrongs done what he was doing to fix the problem.
Jim came out to fix our fireplace that had stopped working. He was able to fix it quickly and at an affordable price. Sometimes having services coming into your home can be awkward, but he was very friendly and explained what the problem was and how he fixed it. Highly recommend Grenz Service!
Jim was over to do service/a tuneup on our gas fireplace. He was very thorough and explained everything that he was doing. He has a great amount of knowledge and experience which made me really comfortable at the end of the day. I would recommend his company to anyone.
Once again, great service! Thorough, hard working, efficient, friendly, courteous, and knowledgeable. We have loved working with them over the years and will continue to.
Grenz is an exemplary service company. I highly recommend Grenz and the American Standard Brand.
My AC unit stopped working on a Friday morning. Jim was able to come out within a couple of hours that afternoon. He was very knowledgeable and knew right away what the problem was. I appreciated that he explained to me what was wrong. I have Grenz scheduled for general maintenance coming up and know I’ve got a great company coming.
Grenz crew arrived exactly on time to install a furnace. They estimated that total installation time would have them leaving the site by 2pm. However, every thing went well and they were finished up by 12:30pm.
We needed both central air and furnace unit. Jim came out to our home to meet with us and provided a very thorough and comprehensive explanation of his products and services. He inspected our home and gave us several options. I have NEVER met an individual so thoroughly knowledgable about the industry, their product line, and technical details. Outstanding person to work with. Very professional communication - and timely! They reminded us of their upcoming visit and provided detailed receipts. (Nothing hand-drawn here!). The install was flawless - professional and hard-working team. I sincerely wish I experienced this degree of professionalism, honesty, and expertise with each company we worked with. We are very grateful we found Jim and his team. They are now our HVAC company and we would highly recommend them to everyone. Thank you Jim!
Called before the appointment and was very knowledgeable on my bar coolers
Jim does a great job of explaining the problem and offering solutions to fix the problem. I can trust Jim.
American Standard AC I natal