Company Profile

Quality products, seven-days-a-week service, 24 hour emergency service, same-day turnaround – these building blocks have allowed Thermal Hydronic Supply Ltd. (T.H.S.) of Vaughan, Ontario to quickly grow into a trusted and reputable wholesaler who’s customer base has expanded across North America.

T.H.S. has been servicing the HVAC industry since 1999. With more than 60 years of collective experience in the boiler & hydronic field, T.H.S. has achieved its goal of becoming a leader in the aftermarket and replacement parts business.

With our constant dedication to service, and a “customer comes first” attitude, our toll-free number (1-877-836-7772) has become an important one to almost every major heating contractor in Canada and the U.S. With have just moved into our new 20,000 sq ft facility to make your experience with us even better.

We have expanded our product lines, increased our stock, and have built a 3000 sq. ft parts counter & showroom. The customer can now shop themselves, and view the latest products on the market which are displayed throughout the showroom for the contractor to familiarize themselves with.

Our fully trained staff onsite can assist in any way possible.

Bid, Spec and Design

From complete mechanical room rebuilds, booster systems, heat exchanger and boiler installs, to radiant heating solutions for your home or business T.H.S. has you covered.

We do all our own design work in house, eliminating the middle man, lowering your install cost. Whether you are thinking about heating your basement floor, installing a snow melt driveway, putting in floor heating in a new warehouse or plant, or are replacing the boilers in a 30 story high rise, we can help.

Just contact us and we will do our best to help in any way we can. T.H.S. is also very proud to be the exclusive North American master distributor for SIME BOILERS. SIME is a global leader in the hydronic market and has been in business for over 40 years.

With a full line of Cast-Iron, wall hung, condensing & non-condensing boilers; there is a model for even the most complex and demanding application.

Come visit our showroom anytime, or give us a call to find out more about this exciting new product line or vist us on the web at

"THS has established an unmatched reputation for quality products and superior service."

- HPAC Magazine