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How long does it take your water to heat up?

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sjde:
We have a 375 gallon hot tub. On a refill , how long do you expect it to take for yours to heat up?

Ours just took 18 hours and that seems excessive. We figure the tap/hose water is about 50 degrees year round.  Outside temp was cool-40's- but that shouldn't matter since the spa is well-insulated.

Spatech_tuo:

--- Quote from: sjde on May 30, 2019, 01:47:51 pm ---We have a 375 gallon hot tub. On a refill , how long do you expect it to take for yours to heat up?

Ours just took 18 hours and that seems excessive. We figure the tap/hose water is about 50 degrees year round.  Outside temp was cool-40's- but that shouldn't matter since the spa is well-insulated.

--- End quote ---

220V hook-up?

bud16415:
I leave the cover open until the tub hits the air temp. Our tub same size as yours 240V and starting temp about the same i would guess about 12 hours. I have my fill hose hooked to both hot and cold water and if I'm in a hurry or doing a partial drain I can add up to 50 gallons of 150f water. That speeds it up a lot. I often use the hot water to top it off before we get in.   

sjde:
Yes, 220V

BullFrogSpasMN:
need more info on the spa itself, some manufacturers are putting heaters as low as 3.5-3.7kw all the way up to 5.5kw in 220V spas so depending on heater size it could take 16-18 hours, 12-14 for the larger heaters

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