Glow Brand T180

Glow Brand T180 is a gas tankless water heater from Glow Brand at a 0.95 UEF — 194k BTU/h input.

Efficiency
Uniform Energy Factor (UEF)	0.95
Recovery efficiency	94.4 %

General
Fuel	Natural Gas, Propane

Performance
Gas input rate	194 kBTU/h

Installation
Max current draw	15 A

Smart features
Smart / connected capable	No

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 Glow Brand T180 at common temperature rises (a typical shower uses about 2 GPM of mixed water):

Temperature rise	Climate	Sustained flow	Simultaneous showers
45 °F	Warm climate (~75 °F groundwater)	8.2 GPM	4
55 °F	Mild climate (~65 °F groundwater)	6.7 GPM	3
70 °F	Cold climate (~50 °F groundwater)	5.3 GPM	2
77 °F	DOE test condition	4.8 GPM	2

Similar water heaters

A. O. Smith T-H3J-OS-N (ATO-240H 1-1) (UEF 0.95)
Rheem ECOHS180IP (UEF 0.96)
Vesta VRP PLUS-199 (UEF 0.96)
Noritz NCC199CDV (GQ-C3260WZ-FF US) (UEF 0.96)
Noritz EZ111DV (GQ-C3261WX-FF-1 US) (UEF 0.98)
A. O. Smith T-H3-OS-N 1 (ACT-199O-P 1-1) (UEF 0.95)

Frequently asked questions

Is the Glow Brand T180 ENERGY STAR certified?

Yes, the Glow Brand T180 holds a current ENERGY STAR certification for water heating efficiency (UEF 0.95).

Is the Glow Brand T180 a smart water heater?

No, the Glow Brand T180 is not connected-capable — it has no app connectivity or demand-response support.

Sources

data.energystar.gov (retrieved 2026-08-17)