Current DOE CCMS record

GSW WATER HEATERS GTM-199X3-N Water Heater Specifications

Source facts reported to DOE for this exact model identifier.

Key specifications

DOE-reported brand
GSW WATER HEATERS
Exact model number
GTM-199X3-N
DOE heater type
Instantaneous Gas-fired Water Heater
Rated storage volume
1 gallons
Draw pattern
High
UEF
0.95
Maximum flow rate
6 gallons/minute
Recovery efficiency
96%

DOE source details

DOE basic model number(s)
ATM-199M-N 1**

Source & freshness

DOE CCMS source page

Source snapshot retrieved: September 21, 2026

These records were reported to DOE. Appearance here is not a DOE compliance determination, independent test, or approval.