Guardian Heating and Cooling, LLC

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24 Years In Business

Company Details

  • Verified Licenses


7815 South 6th Street
Oak Creek, WI 53092


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Service Details

    Areas of Expertise

    • Installation of all Heating & Cooling Systems
    • Boilers / Furnaces / Air Conditioners
    • Radiant / Hydronic
    • Snow Melt Driveways and Walkways
    • Water Heaters
    View All Offerings and Cities Served

    Cost Information

    • Free Estimates
    • Warranty Offered


    62 Verified Reviews
    • 5
    • 4
    • 3
    • 2
    • 1

    Highly rated for

    • Quality
    • Value
    • Customer Service
    Showing 1-10 of 62 results
    5.0 Mary K. Mequon, WI

    He was very knowledgeable. Shared information on costs and explained process very clearly.

    5.0 Jeff K. Franklin, WI

    I needed heat before my pipes would freeze. He came out right when I called gave a great quoted price on the spot and came next day to get the job done. Can't say enough. Very happen. Stopped back couple days later to make sure everything was working to my expectations

    5.0 Ross S. Wauwatosa, WI

    The owner of Guardian Heating and Cooling, LLC (Steve Peterson) and one of his sons (Adam) did an AWESOME job installing a new, high-efficiency, gas-fired Laars combi-boiler at my residence! If the new unit continues to perform as well as it is presently, and Guardian service continues to be this excellent in the years ahead, I will be a happy camper and pat myself on the back for having been smart enough to hire them. :-) The unit they replaced was built by a highly-regarded manufacturer that had been installed by another highly regarded contractor by the previous owners of my home. As it turned out, the previous heating unit was a money pit and the previous contractors technical abilities left much to be desired. Each heating season, the previous boiler experienced one significant failure after another. The previous contractor kept changing parts without digging into **why** the parts were failing. They simply said I should accept this, since the unit was **old**. Unhappy with this response, I decided to cut my losses. To the rescue: Guardian Heating and Cooling! While not the least expensive contractor, Steve, and Son exceeded my expectations simply by meeting them! They arrived one time and did everything they said they were going to do. With unseasonably cold weather in October, I was initially a bit apprehensive at the prospect of having no heat for a few days while a replacement system was installed. I wondered if they would be able to complete this project in a timely manner, as they said they would. My worries were for naught. There were no surprises and no surprise expenses ... no nickle-and-diming when Guardian needed an extra part or fitting ... no drama. Guardian simply got the job done. And they did it beautifully. They took care to minimize the time I would be without water and without heat. After installation, they thoroughly tested the unit. The next day, they checked back to ensure that I was satisfied with its performance. They also cleaned up reasonably when they were done and were carefully not to damage my property, as they moved large, heavy pieces of equipment and tools around. In summary: a big Thumbs Up for Guardian heating and Cooling, LLC!

    4.5 Richard F. Milwaukee, WI

    Staff was always on time. Gave a very fair price. Only issue is that they had to replace a valve, as it was draining water daily. I would recommend them

    4.5 Jacob S. Milwaukee, WI

    Prompt and courteous service people. Product works great and our house feels amazing. Price was right where we needed it to be for our budget. You should know up front that payment without a credit card is preferred.

    5.0 Nick C. Wauwatosa, WI

    Our nearly 40 year old boiler system had seen its last day. Steve with Guardian was easily accessible by phone, prompt, and helpful. He installed a new boiler and retooled the set up of our system. We re very happy with the service, speed of the install, and professionalism the guys showed. We didn t shop around much since we weren t interested in having too many people coming in and out of the house during the pandemic, but felt confident Steve was giving us good information and a fair price based on what we were told in the past and research we had done. I would certainly recommend Guardian to friends and family. I will update going forward if necessary since the system is currently a day old, but the house is as toasty as ever so mission accomplished thus far.

    5.0 Anthony P. Sussex, WI

    Besides the excellent work, there was a friendly attitude. They left everything clean. Great work


    Guardian Heating and Cooling, LLC

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