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

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Local Reviews
for brookfield, wi

Rated 5.0 out of 5 stars based on 6 customer reviews

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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Top Notch Company!

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!

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Great service

I appreciated how engaging James was during the service call. He showed me in detail how a pressure switch failed which prevented the furnace from going into stage 2 heating. He also showed me what was causing a humidifier leak and how to replace the humidifier filter. Overall, Grenz seemed pretty honest and fair. I'll probably continue using them for future service.

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Great Service,!

Arrived early, explain everything they did, asked me if I had questions and they answered them.

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Excellent Service

I have always had a great experience with Grenz...very professional and neat. They’ve serviced and cleaned our fireplaces for the past few years and we’ve been extremely pleased. Hope they stay in business for many years to come.

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Job Locations
for brookfield, wi

James P. G.

James P. G. Job Checkin

Hoshizaki ice machine install

Hoshizaki ice machine 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

Cooler and freezer repair

Cooler and freezer repair

James L. G.

James L. G. Job Checkin

Repair obsolete pilot assembly on this fireplace.

Repair obsolete pilot assembly on this fireplace.

James P. G.

James P. G. Job Checkin

Walk in cooler repair


James P. G.

James P. G. Job Checkin

Sterling unit heater

Sterling unit heater

James P. G.

James P. G. Job Checkin

American Standard furnace install

American Standard furnace install

James P. G.

James P. G. Job Checkin

Hussman freezer repair

Hussman freezer repair

James P. G.

James P. G. Job Checkin

American standard install

American standard install

James P. G.

James P. G. Job Checkin

Walk in cooler repair

Walk in cooler repair

James P. G.

James P. G. Job Checkin

Ac repair

Ac repair

James P. G.

James P. G. Job Checkin

Trane HVAC system maintenance

Trane HVAC system maintenance

James P. G.

James P. G. Job Checkin

Ac repair

Ac repair

James L. G.

James L. G. Job Checkin

Inspection for proper operation and tune up system.

Inspection for proper operation and tune up system.

James P. G.

James P. G. Job Checkin

Zoning system repair

Zoning system repair