Products

Category // Gas Boilers

Trinity Fire Tube

Max Input: 399,000 BTU/H Stainless steel down-fired fire tube heat exchanger.

  • Nine models to choose from
  • Field Convertible gas system
  • Venting up to 150
  • 8:1 Turndown ratio
  • Cascading capable

With NTI, you're buying quality, North American-made comfort

Our customer service hotline and extended warranty program maintain our commitment to you.