I live in Lannon WI, in the greater Milwaukee area. I was assigned Wilkes Plumbing thru my HSA Home Warranty. We had a leak in a valve behind a pedestal sink in the bathroom that was leaking thru the floor and into the basement. The plumber assigned, TIM was great, professional and quickly had the problem fixed. He even replaced the faulty valves with an upgraded value and not the builder grade that was there.
While I was with him in the utility room, where he had turned off the water supply to the house... I noticed the top of my hot water heater had standing water and asked him what was going on. He explained that it was part of my NTI boiler system (in floor heating) which uses a special type of dual stage water heater and that there was a clog in my system that was venting water out the top (not good). This called for a specialized tech for the NTI, not a regular plumber.
I called HSA Home Warranty and they again assigned Wilkes Plumbing to the job as they had an NTI tech on staff. ROB came out and explained what was happening and that he would fix my issue. He replaced the broken part, fixed a small leak in an adjoining pipe and reviewed my system with me. He also showed me that a particular part of the system was not turned on... and made sure my whole NTI was working correctly and had proper settings. When done, he wiped everything down and left it better then when he arrived.
I would greatly recommend WILKES Plumbing.