Water Heater Size For Whirlpool Tub

Incoming water temperature is a critical consideration which varies by region and season.

Water heater size for whirlpool tub.

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. We already covered gpm. 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. This will happen if the water heater isn t large enough for the bathtub.

We fill it halfway wait about 40. The water heater tank should be about 2 3 the size of the bathtub. A very small bathtub might hold 40 gallons while a larger single person bathtub could. For tankless water heaters the key criterion is hot water flow rate.

Consequently these are the two most frequently installed sizes. Typically residential water heater sizes range from 40 to 100 gallon tanks. 03 18 2012 at 6 35 am. A standard whirlpool tub requires one 15 amp gfci receptacle to run the motor.

Now you need to understand what temperature rise means. Determining if a water heater is large enough for a bathtub is actually pretty simple. 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.

For a tank style heater household size is a simple indicator of hot water needs. 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. 1 or 2. However every family has different water demand requirements.

Your tub is only halfway full and you re out of hot water. 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. You can estimate the necessary tank capacity in gallons based on the number of people in the house. For example if you have a 40 gallon water heater it would be just large enough for a 60 gallon bathtub.

Before we talk about tankless hot water heaters here is a recap of the above. A 15 amp circuit is the minimum standard but a 20 amp is better and is required by some tub manufacturers.