Rheem ECOHS200IP is a gas tankless water heater from Rheem rated 5.8 GPM at a 0.96 UEF — 176 therms/yr certified use, 199k BTU/h input.
Our take
On propane, Rheem's ECOHS200IP keeps the strong certified profile of its natural-gas twin — 0.96 UEF at the 93rd percentile of the class, 98% recovery, 5.8 GPM rated and roughly 5.5 GPM sustained at a 70 °F rise, 0.4 GPM activation, 2-inch direct venting — while the fuel moves the annual figure to about $519 at average propane rates. Nothing in the hardware causes that gap; it is the cost of being off the gas main. Rheem and Richmond both sell this certified unit.
Best for: Full-flow propane service with a sensitive activation threshold.
Trade-off: The propane bill: roughly twice the natural-gas equivalent.
Efficiency
Uniform Energy Factor (UEF)
0.96
Annual gas use (natural gas)
176 therms/yr
Recovery efficiency
98 %
Annual propane use
192.35 gal/yr
General
Fuel
Propane
Capacity
Max flow rate
5.8 GPM
Draw pattern
High
Minimum activation flow
0.4 GPM
Performance
Gas input rate
199 kBTU/h
Installation
Max current draw
2 A
Vent type
Direct Vent
Vent size
2
Smart features
Smart / connected capable
No
Dimensions
Width
18.1 in
Depth
13.6 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 Rheem ECOHS200IP 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)
5.8 GPM
2
55 °F
Mild climate (~65 °F groundwater)
5.8 GPM
2
70 °F
Cold climate (~50 °F groundwater)
5.5 GPM
2
77 °F
DOE test condition
5 GPM
2
Also sold as
The Rheem ECOHS200IP is certified hardware that Rheem and its partner brands
publish under 6 names. The same specifications apply to every
variant:
Yes, the Rheem ECOHS200IP holds a current ENERGY STAR certification for water heating efficiency (UEF 0.96).
How much does the Rheem ECOHS200IP cost to run per year?
About $519 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 Rheem ECOHS200IP use?
The Rheem ECOHS200IP uses Direct Vent venting with 2 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the Rheem ECOHS200IP a smart water heater?
No, the Rheem ECOHS200IP is not connected-capable — it has no app connectivity or demand-response support.
