how long to heat?

[anne]

I realize this will vary with types of heaters, water volume, etc, but about how long will it take a tub to heat up again after a drain and refill? Any general degrees per hour per volume guidelines out there? I will have an Arctic Summit, water volume of 390 gal. Obviously I dont have it yet, or I guess I could answer my own question.  

[Chas]

110 volt = around 3 degrees per hour.
220 volt = around 10 derees per hour.

Generally, a 110 tub will heat from tap water in about 14 -18 hours, a 220 in 4-6 hours.
Longer if you're in a hurry, of course.

[ssbraun]

My tub is 220V and heats 4 degrees per hour, not 10.  Others with similar tubs have indicated this is their heat rate also.  Tub size is likely to affect rate also...IMO  

Steve

[JcDenton]

Hi Anne

Just refilled my Arctic Summit this week. Lets see - I worked it out to about 7-8 degrees/hour.

Up north here the water out of the tap was 46 degrees so to get up to 103 - about 71/2  hrs for us.

Starting temp is key but I would think that the rate of 7/hr should give you a ball-park.

Enjoy the tub!


Jc

[bosco0633]

anne, I have the tundra which has a little more water than the sumit.  I filled today, and the tap water was 42 degrees.  Two hours later it was 65 degrees.  So I would say that Chas is bang on for my tub.  10 degrees an hour.

I also find that if I run the pumps and close the lid, it heats up quicker.

I am about to go in it right now and it is sitting at 104.  so nice fresh new water is great.

[ssbraun]

10 degrees per hour, eh?  That's impressive!

[anne]

Thanks, everyone. I'm already anticipating the "down time" before I get my first hot water, and the delay after my inevitable first monthly refill! And I dont even have the tub yet!!!!! Sore from shoveling gravel, though  :-/

[tony]

10 degrees per hour, eh?  That's impressive!

You've got a heck of a lot more water to heat.  Thats why you only get four degrees per hour.