Water Heater Size For Whirlpool Tub

Typically residential water heater sizes range from 40 to 100 gallon tanks.

Water heater size for whirlpool tub.

That is a water heater in the north either tank or tankless will need a higher btu input in the winter than the summer to heat and deliver water to a given temperature. However every family has different water demand requirements. The water heater tank should be about 2 3 the size of the bathtub. If your whirlpool tub is equipped with a heater you will need an additional 15 amp gfci receptacle.

We already covered gpm. A standard whirlpool tub requires one 15 amp gfci receptacle to run the motor. For a tank style heater household size is a simple indicator of hot water needs. Before we get to how to use the calculator to size a tankless water heater let s talk about the factors that go into understanding what size inline water heater you need.

A very small bathtub might hold 40 gallons while a larger single person bathtub could. We have a 6 foot whirlpool tub in our bathroom that we hardly use because filling it takes more than an hour since we only have a 40 gallon water heater. If filling a fairly large whirlpool tub is something you like to do you re stretching the capacity of a 50 gallon standard water heater. Tankless water heater sizing calculator.

Consequently these are the two most frequently installed sizes. For example if you have a 40 gallon water heater it would be just large enough for a 60 gallon bathtub. Incoming water temperature is a critical consideration which varies by region and season. Your tub is only halfway full and you re out of hot water.

This will happen if the water heater isn t large enough for the bathtub. Usually most homeowners find that either a 40 or 50 gallon hot water tank is the best fit for their needs. Now you need to understand what temperature rise means. We fill it halfway wait about 40.

Determining if a water heater is large enough for a bathtub is actually pretty simple. You should post a photo that sounds like a cool tub but an average hot water heater is 40 gallons it would take 2 3 tankfuls to fill that tub. A 15 amp circuit is the minimum standard but a 20 amp is better and is required by some tub manufacturers. For tankless water heaters the key criterion is hot water flow rate.

You can fill it but no one else can take a hot shower for about an hour or so until the water heater catches up. 03 18 2012 at 6 35 am.