250 West Main St.
Delafield, WI 53018
262-646-3880

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Local Reviews

Rated 5.0 out of 5 stars based on 148 customer reviews

Great service

Great company!

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Friendly, professional service

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

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Great 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.

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FANTASTIC SERVICE

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Furnace issue resolved quickly at a great price

I really appreciated the technicians honesty and accurate diagnostic skills. The work was done quickly and I now have heat again.

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Great service

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

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Great Timely Service.

Furnace went out overnight. Jim gas it fixed by noon.

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Great service

Prompt- professional- very courteous- explained what was wrong- and what he was going to do to fix the problem.

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Great service

Prompt- professional- very courteous - explained what was wrongs done what he was doing to fix the problem.

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Outstanding service

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Job Locations

James P. G.

James P. G. Job Checkin

Carrier air conditioner repair

Carrier air conditioner repair

James P. G.

James P. G. Job Checkin

Fillet cooler repair

Fillet cooler repair

James P. G.

James P. G. Job Checkin

American Standard Install

American Standard Install

James P. G.

James P. G. Job Checkin

American standard platinum system install

American standard platinum system install

James P. G.

James P. G. Job Checkin

Walk in cooler refrigeration

Walk in cooler refrigeration

James P. G.

James P. G. Job Checkin

American standard system install

American standard system install

James P. G.

James P. G. Job Checkin

Goodman heating system maintenance

Goodman heating system maintenance

James P. G.

James P. G. Job Checkin

American standard platinum variable speed install

American standard platinum variable speed install

James P. G.

James P. G. Job Checkin

American Standard system install

American Standard system install

James P. G.

James P. G. Job Checkin

American standard system install

American standard system install

James P. G.

James P. G. Job Checkin

Lennox air conditioner repair

Lennox air conditioner repair

James P. G.

James P. G. Job Checkin

American standard air conditioning installed

American standard air conditioning installed

James P. G.

James P. G. Job Checkin

Armstrong air conditioner repair

Armstrong air conditioner repair

James P. G.

James P. G. Job Checkin

American Standard AC install

American Standard AC install

James P. G.

James P. G. Job Checkin

Armstrong AC Maintenance

Armstrong AC Maintenance