Bradford White RTG-K-199N1 is a gas tankless water heater from Bradford White rated 5.4 GPM at a 0.95 UEF — 178 therms/yr certified use, 199k BTU/h input.
Also sold as the Bosch Greentherm (T9800 SE 199). This model is the same certified
hardware as the Bosch Greentherm (T9800 SE 199), published under a
different brand — full details, comparisons, and pricing live on that page. The
certified figures below are identical.
Efficiency
Uniform Energy Factor (UEF)
0.95
Annual gas use (natural gas)
178 therms/yr
Annual propane use
194.53 gal/yr
General
Fuel
Natural Gas, Propane
Capacity
Max flow rate
5.4 GPM
Draw pattern
High
Minimum activation flow
0.5 GPM
Performance
Gas input rate
199 kBTU/h
Installation
Max current draw
2.7 A
Vent type
Direct Vent
Vent size
2
Smart features
Smart / connected capable
No
Dimensions
Height
32 in
Width
19 in
Depth
10 in
Certification
ENERGY STAR certified
Yes
Real flow rate by climate
A tankless heater's usable flow depends on how far it must raise incoming water
temperature. Sustained hot-water flow of the Bradford White RTG-K-199N1 at common temperature
rises (a typical shower uses about 2 GPM of mixed water):
Is the Bradford White RTG-K-199N1 ENERGY STAR certified?
Yes, the Bradford White RTG-K-199N1 holds a current ENERGY STAR certification for water heating efficiency (UEF 0.95).
How much does the Bradford White RTG-K-199N1 cost to run per year?
About $258 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What venting does the Bradford White RTG-K-199N1 use?
The Bradford White RTG-K-199N1 uses Direct Vent venting with 2 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the Bradford White RTG-K-199N1 a smart water heater?
No, the Bradford White RTG-K-199N1 is not connected-capable — it has no app connectivity or demand-response support.
