Delivering Mission-Critical Power and Cooling Solutions for over 50 Years

See Our Products

Everything you need when you need it

We have over 75,000 parts available for next-day shipping and offer 24/7 services to keep your systems running.

Parts & Services
Exterior of Zonatherm and ThermFlo office building located in Buffalo Grove, IL

Experience you can rely on

Zonatherm and sister company ThermFlo have delivered mission-critical solutions in the critical power and cooling industry since 1969.

About Us


Supplying market-leading products and services you can trust


Saving you time and money with the best solutions available


Providing future-focused products and solutions

Powering business as usual

We believe that the only acceptable amount of downtime is zero. From day-to-day operations and planned outages to natural disasters, we offer solutions that keep businesses in various industries up and running.

Explore Industries

Ready to partner with Zonatherm for 100% reliability?

Contact Us