NTI – TFT399 Residential/Light Commercial Gas Boilers

NTI Boilers

TFT Series

The TFT is the top quality choice for both residential or light commercial applications. The high-performance stainless steel down-fired fire tube heat exchanger and the top and bottom stainless steel piping connections, offer supreme durability and flexibility of installation. The TFT reigns supreme with its unique mix of outstanding performances and legendary reliability.

Main Features

  • Touch screen intuitive display
  • High performance fire tube stainless steel heat exchanger
  • Integrated low water cut-off
  • Stainless steel internal piping and venting
  • Top and bottom water connections
  • Advanced cascade settings
  • Vents in PVC, CPVC or Poly Propylene


Input power, NG 39.9 – 399 MBH
Input power, LP
AFUE 95.40%
Heating capacity 380 MBH
Net AHRI rating 330 MBH
Installation type Indoor Wall Hung
Weight 247 lb
Gas connection 3⁄4 in NPT male
Water connection 11⁄2 in NPT male
Air inlet 4 in (max 100 ft)
Flue 4 in (max 100 ft)