Need a part for your Heating System?

We will find it for you. We have thousands of parts from various manufactures including Armstrong, Grundfos and Hayward just to name a few.


With nearly every component or part found in today’s complicated mechanical rooms in stock, when you need it we have it. This includes complete hydronics coverage – boilers, pumps, PEX, valve controls, accessories, specialties and in-house design software.

We ship across North America from our central location in Greater Toronto.

A full line of replacement parts are available for the following manufactures including, heat exchangers, refractory, and burners.

  • RBI Water Heaters
  • Raypak
  • Teledyne Laars
  • Lochinvar
  • Patterson Kelly
  • Thermal Solutions
  • Camus
  • Hayward
  • A.O. Smith
  • Weil McLain
  • Voyager
  • And Many More

With over 3000 sq. feet of showroom space, our fully stocked counter carries a full line of components and accessories. We have you covered from air vents to power ventors, from gaskets to flow switches. Drop by anytime, to make your next service call an easy one.

  • Colton
  • Air vents, bleed valves
  • Tekmar Controls
  • Indoor/out door controls, snow melt sensors
  • Tjernlund
  • Powers venters, dampers
  • McDonnell Miller / ITT
  • Flow switches, low water cut-offs
  • Erie zone valves
  • Humidifiers / filters
  • Ranco limits & controls
  • RBI Water Heaters
  • Raypak Boilers
  • Rheem / Ruud Water Heaters
  • Laars Boilers
  • Lochinvar Water Heaters
  • Voyager Water Heaters
  • Hayward Pool Heaters
  • A.O. Smith Water Heaters
  • Weil Mclain Boilers
  • Patterson Kelly Boilers

If you do not see a particular product you may be looking for, please contact us at 905.265.1527 or and we will do our best to locate it for you.

Contact Thermal Hydronics for the right efficient and energy saving pump solution to fit your need.

We carry the following Grundfos and Armstrong pumps:

Product Groups

Contact one of our Field Assistance specialists to find the part you are looking for.

We at Thermal Hydronic Supply Ltd. manufacture a wide range of replacement heat exchangers for several of the industries top Boiler Brands. Each and every copper-fin heat exchanger produced by THS meets, or exceeds the same requirements and specifications as the O.E.M. model it is replacing. All of our heat exchangers offer industry wide compatibility for all commercial, residential, and industrial applications.

  • A full line of heat exchangers and tube bundles are in stock at all times.
  • Most models can be manufactured and shipped “same day”

Over the years, several boiler manufactures have discontinued certain models within their product line, making room for new product. What do you do if you have to replace a heat exchanger in a model that still is in good working condition but can not get replacement parts for? That is where THS thrives. We have data dating back to 1950 and can produce a tube bundle for a particular model of boiler which is no longer available by the manufacture itself. This extends the life span of your boiler, avoiding costly replacement to the customer.

  • All of our heat exchangers come c/w all gaskets, and mounting hardware for a simple installation.

All Heat exchangers are tested in our facility to ensure quality before they leave the premises. Precise fit, no leaks, guaranteed.

Please contact us at 905.265.1527 or should you need help with your next hydronic project, or are looking for something as simple as a replacement part for any number of manufactures we support in our great industry.

Fibre Board has completely revolutionized the refractory market in the past 8 years. As one of the first companies to implement this technology, THS has produced thousands of refractory sets for several of the industries top Boiler brands. With the aid of C.N.C. technologies, our machine centre can produce intricate and precise machining of ceramic fibre board, with use limits up to 3000°f and densities up to 50 lb/ft.

The superior rigidity of Thermal Cast refractory will minimize the risk of shipping, handling, and installation damage, as well as enhance the performance and efficiency of your boiler. Thermal Cast is precut to the specific size requirements of the boiler you are working on. All the information we need is make & model, and you can leave the rest to us.

Thru extensive testing, Thermal Cast will out last regular pre-cast refractory by up to 4 times its life span, and carries an industry first “2 Year Warranty.”

  • No cracks or collapsing, sold by the brick or by the set.

Thermal Cast Refractory available for:

  • RBI Water Heaters
  • Laars Boilers
  • Raypak Boilers
  • Rheem / Ruud Boilers
  • Lochinvar Boilers
  • Weil Mclain
  • Many custom applications are also available, from ½” to 2.5” thick. Please inquire.

Product specifications

Thermal Cast products are vacuum formed from a slurry alumina-silica fibre and binders. These ridged, light weight boards and shapes offer low thermal conductivity, high temperature stability, uniform density, and excellent resistance to thermal shock, and chemical attack.

These products are well suited for applications experiencing vibration and mechanical stress. The excellent rigidity and modulus of rupture processed by these boards and shapes make them strong and self supporting yet relatively light weight and easy to cut or machine.

Did you know?

Did you know that during the initial heating of the Thermal Cast refractory, a small amount or organic binder will start to burn off at approximately 450° F (232°C). Once this material has burned off, there will be no further off-gassing. Caution should be exercised during this period which should last no longer then 15 minutes.

Please contact us at 905.265.1527 or should you need help with your next hydronic project, or are looking for something as simple as a replacement part for any number of manufactures we support in our great industry.