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

Local Reviews

Rated 5.0 out of 5 stars based on 60 customer reviews

exceptional service

Couldn't ask for a more helpful, courteous person coming into my home

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Spectacular service, fast, affordable!

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Great Company and people

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fantastic!!

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Friendly people, professional

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Great Service

Grenz ,excellent customer service gives me piece of mind know that my equipment is maintained by professionals who are dedicated to excellent service. I recommend that everyone use them, they are honest and reasonably priced.

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Fantastic service and pricing!

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Ac service

Very responsive and great service

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Great service

Jim explained the problem very well and fixed it Great job

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Great service and advice at a fair price

Grenz is always very responsive. They give good solid advice to make repair decisions on. Work is done well and explained. I'm addition, they have always worked around my schedule and coordinated with the tenants of the property.

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Job Locations

James P. G.

James P. G. Job Checkin

Heil Furnace Maintenance

Heil Furnace Maintenance

James P. G.

James P. G. Job Checkin

Cooler repair

Cooler repair

James P. G.

James P. G. Job Checkin

Bryant furnace maintenance

Bryant furnace maintenance

James L. G.

James L. G. Job Checkin

Repair Gas fireplace.

Repair Gas fireplace.

James L. G.

James L. G. Job Checkin


James P. G.

James P. G. Job Checkin

Chiller work

Chiller work

James P. G.

James P. G. Job Checkin

Furnace repair


James L. G.

James L. G. Job Checkin

Service Mendota Fireplace.

Service Mendota Fireplace.

James P. G.

James P. G. Job Checkin

American Standard Heating install

American Standard Heating install

James L. G.

James L. G. Job Checkin


James P. G.

James P. G. Job Checkin

American Standard Heating Maintenance

American Standard Heating Maintenance

James P. G.

James P. G. Job Checkin

Trane air conditioning repair

Trane air conditioning repair

James P. G.

James P. G. Job Checkin

Furnace and air conditioning install

Furnace and air conditioning install

James P. G.

James P. G. Job Checkin

American Standard Heating install

American Standard Heating install

James L. G.

James L. G. Job Checkin

Repair Martin Fireplace.

Repair Martin Fireplace.