Having been asked by some hot tub owners for the best suggested hot tub temperature when not in use, like when they take a break for more than a week and leave their hot tub unattended, the best bet is to set the temperature down by around ten degrees below your normal usage setting.
By reducing the heat setting your water will slowly cool slightly over perhaps two or three days to the lower temperature as all hot tubs lose heat, no matter how well they are insulated.
I’m assuming you will have your hot tub cover installed to help keep as much heat as possible in the water, along with keeping any rubbish out?
As the temperature drops, this means less heat is transferred to atmosphere compared to when it is in use, meaning costs will be reduced while you are away.
It is very much the same as when you go away for a spell, you reduce the timing on your home lights and heating to ease the costs a little.
When you return, perhaps three or four hours heating will bring it back to normal for you, so don’t be tempted to jump right in the moment you get back.
On the other hand, if you are thinking of a shorter time of around three or four days away, set the dial to five degrees cooler to gain any benefit on reducing your electricity bill.
If you have the option of being able to time the power supply to your hot tub, try setting the temperature lower and at the same time reduce the time the pump is in action to perhaps twice per day for an odd hour or two, preferably in the morning rather than night time.
This will have to be judged from past experience as the aim is to not be heating up the world with your hot tub while you can’t use it.
One more point comes to mind regarding temperature drop and pump operation timing.
Winter hot tub running
If you are planning on leaving it during the colder parts of the season, or even, dare I say it – winter – you may be best just turning the heating down by five degrees rather than adjusting the pump timing, as you do not want to be coming home to your personal pool with a skimming of ice on top beneath your hot tub cover.
Where we live there’s no way we would leave our hot tub filled after Fall as it is starting to get far too cold.
Chemical cost savings
An added benefit of turning the temperature down is there is a chemical saving as ammonia and chlorine tend to evaporate well from the hot water, but as the temperature drops, so does the expense for the chemicals needed, plus not checking the pool should be fine providing you check the chemical balance just like we do and reset it before you take a dip.
So there are no worries about reducing the heat while you are away and everything will be waiting your return with the flick of a switch.
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