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Versatile and made to last. Your pool, spa and hot tub heating solution.

  • Various sizes available
  • Outputs from 35 to 500 MBH
  • High quality Stainless Steel
  • Economical heating solution
  • Designed to ASME

Seven sizes are available with outputs from 35 to 500 MBH. Meets customers' extra heating needs using the home's boiler.


Provides dependable, extremely economical heating for swimming pools, hot tubs and spas.


All components constructed of top quality 316L stainless steel.

  • Constructed of high quality 316L steel for all components.
  • All connections threaded NPT.
  • The unit is designed to ASME sec.V111, Div.1.
  • The maximum allowable water pressure is 250 psig @ 406 F.
  • ISO 9002 Registered and CRN, in some provinces.
Product Registration

To view any of the documents below please click on the link to view online or download in PDF format. If you have any queries about any of our products please contact us. Thank You.

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The Future in Heating Technology and Home

Acknowledged as a leader in research and product development, NTI is a pioneer in developing the most advanced and efficient home heating equipment.