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Posted: Wednesday, August 23, 2017 8:55 AM

What is GPM?!
Tankless water heater manufacturers size their heaters via GPM specifications.
Often this is also included with fine print about the temperature rise.
If your groundwater is 45 degrees, and the temperature rise is 45 degrees at 3.2 GPM.

What this means is that the output temperature of the water coming from the heater will be 90 degrees at a maximum flow of 3.2 Gallons Per minute.
Tank type heaters are sold as total gallons held in reserve in the tank. For example, a typical tank type heater may hold forty gallons of water.

Comparing a 3.2 GPM tankless water heater to a forty gallon tank type heater is possible.
For example, if a tankless unit produces hot water at 3.2 gallons per minute, this rate of flow will run a 40 gallon tank type heater out of water in only ten minutes.
Our 3.2 GPM (at 45F degree rise) tankless heater will still be making hot water long after the 40 gallon tank heater has ran out!
ALL Listed Units on our Tankless Website MUST GO NOW

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• Location: San Francisco

• Post ID: 78833073 sf

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