Dillett Mechanical - Commercial Industrial HVAC - Waukesha's heating & air conditioning experts!

Listen To What Our Customers are Saying

The following are testimonials from our clients expressing their appreciation for our services. We’d like to thank them for their kind words. These customer testimonials encourage us to work even harder as we continue to improve our services to provide you with the highest level of customer satisfaction. 



Dillett Mechanical
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Bob Radewahn, Facilities Director at Catholic Financial Life



Catholic Financial Life has been using Dillett Mechanical for HVAC, chiller maintenance, and plumbing (until that division was closed) since they opened in 1996.  When it comes to HVAC service, their service men excel in knowledge and ability to get the job done well and efficiently.


Chiller Maintenance

Dillett Mechanical has also been doing our chiller maintenance since 1996.  While their HVAC service is outstanding, I believe they excel even more in chiller maintenance.  They are very thorough and so competent that we have not had any downtime in the past 23 years.



When Dillett had their plumbing division, they did all of our work.  We had a large remodeling project – all 120 bathrooms in our apartments.  This job was done over a 3 year period, and it went very smoothly and came in under budget.


I have been very satisfied with all Dillett Mechanical has done for Catholic Financial Life and would recommend them to anyone.  However, the story goes beyond 1996 when Dillett was founded. I knew the founder, Mike Dillett, back in the early 90’s when he was at Johnson Controls.  He mentored me when I started as a very green facilities maintenance man.  He spent so much time helping me be successful that we became good friends.  I followed Mike when he started a division of Murphy & Miller in Milwaukee, and then when he founded Dillett Mechanical in 1996.

Previous Article Matt Byrne, at TribusServices


About Dillett Mechanical

Mike Dillett founded Dillett Mechanical in 1996. With over 30 years of experience in commercial and industrial HVAC Mike realized that most industrial and commercial businesses want to reduce their dependency on outside contractors.


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