Whats the most efficient temperature setting for jacuzzi

[theinnatpaloalto]

Hello everyone!

This is my first post. I own a small hotel in the mountains of Panama and we have a pool and jacuzzi. The pool is not heated and the jacuzzi is heated with a Pentair Mastertemp 400. Currently I have the temp setting to kick on after dropping one degree. So technically the heater is on 24 hours a day 365 days a year.

The question is: is it more efficient to have the heater kick on after dropping one degree or kick on say once it gets below 98 and stay on until it hits 104? Or best to have the range set at 103/104.

Gracias!

 

[ajw22]

Welcome to TFP.

The MasterTemp should be able to heat the Jacuzzi quickly. It is most efficient to only heat it when guests want to use it.

Letting the temperature fall to 98 before heating back to 104 may not be what guests in it enjoy. When in use it should maintain a temperature.

I think 104 is too high for comfortable and safe use. 101 or 102 is much better. But that is me.

 

[theinnatpaloalto]

So it’s more efficient to only heat when in use otherwise turn it off? My local “tech” said it’s best to get to a temp and maintain that temp 24/7. Thanks for your input

 

[ajw22]

Is the Jacuzzi covered when not in use to retain the heat?

Uncovered the Jacuzzi will lose heat when not in use and you will waste gas maintaining the temperature for the heat going into the air.

 

[theinnatpaloalto]

Is the Jacuzzi covered when not in use to retain the heat?

Uncovered the Jacuzzi will lose heat when not in use and you will waste gas maintaining the temperature for the heat going into the air.

Yeah I get that. The cover is always on when not in use. The question is, is it more efficient to let it cool all the way down while not in use then fire it up when needed (several times a day) or let it maintain a constant temp

 

[ajw22]

Yeah I get that. The cover is always on when not in use. The question is, is it more efficient to let it cool all the way down while not in use then fire it up when needed (several times a day) or let it maintain a constant temp

Fire it up when needed.

 

[Dave95602]

Heat loss is proportional to the temp difference between the spa water and the outside air, its basic physics. Insulation, covers, etc., help, but don't change the physics.

The warmer you keep the water, the more energy you will use to keep it warm. So from an efficiency point of view, its cheaper to let the temp fall between uses. This has to be balanced against the time your guests have to wait for it to reach optimal temp.

 

[RDspaguy]

Set it and forget it. Set to 102 with a 2 degree trigger. You can shut off the heater if you close your spa at night and restart in the morning, but depending on volume it may take a while to heat back up. If it really runs 24/7 it's struggling to maintain temp as is and letting it cool at all will take a long time to heat back up.