About Us


Welcome Thermal Hydronic Supply.

Thermal Hydronic Supply Ltd. is a boutique-style, single location HVAC super centre that was founded and established in 2000 by Robert Ruscio. Born into the HVAC and Boiler industry, Rob and his loyal team of professionals have become a valuable resource to many mechanical contractors, engineers, and home builders in the G.T.A. and have successfully expanded our offerings across North America. At T.H.S. we do our very best to put the customer first and always listen to the needs of our clientele.

Our 20,000 square foot modern facility is filled to the rafters with the very latest technology, and products our industry has to offer. Our knowledgeable staff is always happy to assist in any way that they can, and when you dial our phone number you will always be greeted with a live person happy to help, and never a machine.

T.H.S. represents several of the top manufacturers in our industry and also manufactures our own line of aftermarket heat exchangers and fibreboard refractory for the biggest brands in the boiler business.  With same-day turnaround, 24/7 emergency service, tech support and troubleshooting, have become the foundational building blocks in which T.H.S was built upon.   

Thermal Hydronics is also very proud to be the Exclusive North American distributor of RADIANT BRUCIATORI s.p.a.  Radiant is one of the best manufacturers of wall-hung boilers, and tankless water heaters in the world. Their products are sold in more than 50 countries worldwide, and are distributed, supported, and sold across Canada and the United States from our location in Woodbridge, Ontario Canada. The relationship, and trust between Radiant Italy, and T.H.S. is what a true partnership is all about, and we are excited to share with our customers and home builders the very best Italy has to offer.

With more than 100 years of collective experience in the boiler and hydronic industry, the team at Thermal Hydronic Supply Ltd is happy to help out in any way that we can. 

Over 57+ Best Quality Brand

We will assist with your next project from concept to completion

Full mechanical layouts, floor heating and piping diagrams, as well as snow melt and Hi-Velocity air conditioning design. T.H.S will be there to supply all your equipment needs to get your job completed on time and under budget.

Your one-stop shop is something we have spent years trying to perfect. Anything from a ½” pex fitting, to a pump, to a wall-hung boiler. T.H.S. has you covered.

We started out as a solution to the mechanical room, helping contractors like yourself get their buildings back up and running when things went wrong. As time has passed we have evolved into so much more.

Thermal Hydronic Supply is also extremely proud to be the new exclusive North American dealer for RADIANT BOILERS & WATER HEATERS. From boilers, to water heaters, to a fully designed snowmelt system. T.H.S. has what you need to get your next job done right.

Contact us at 905.265.1527 or [email protected] should you be interested in becoming a RADIANT dealer, need help with your next hydronic project, or are looking for something as simple as a replacement part for any number of manufacturers we support in our great industry. Our staff will be more than happy to assist you in any way that we can.