Can you keep Spa open in winter on a shared system if pool is winterized

MDpool21

Member
Mar 22, 2021
12
Clarksville, MD
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MDpool21

Member
Mar 22, 2021
12
Clarksville, MD
Everything the OP described is what is currently being built in my backyard right now.
Spa does have a skimmer.
I'd prefer to keep it open in the winter, and my PB has told me that wouldn't be an issue. Cost of gas, would be high no doubt.
My spa is only 6 x 8 and fully in ground detached.
One set of equipment.
I'm told that is not an uncommon setup here in Utah. I imagine that things get colder here than in MD.
So your pool and spa share one set of equipment? Do you have any concern for freezing/bursting pipes in your pool if you keep your spa open all winter but close your pool?
 

MDpool21

Member
Mar 22, 2021
12
Clarksville, MD
I was thinking about this last night and I think you can have what you want... I will not be easy to do you just have to do it right..

1. Make your hot tub a stand alone system complete with its own pump, filter, skimmer, and heater.
2. put your pump and all equipment in a heated shed. (you said you have a whole house auto backup generator)
3. your hot tub will be set up like a big pool, just heated with jets.
4. use an electric heater or 2 to keep the temp up to 104 or whatever temp at all times.
5. bury all pipes 6 inches below the normal frost line
6. use some kind of foam or something else for insulation around the hot tub during install to keep heat in and cold out.
7. get a 6 inch custom cover, beyond nice makes custom covers like this.. Oversized Spa Covers | Large Hot Tub Covers | BeyondNice
8. make the hot tub a rectangle not round to be able to have a cover.

In the winter if anything happens and the temp falls below 50 degrees have a way to winterize the system fast.. The problem people in Texas found is it went bad fast and freezes within hours... The more insulation you can have the less it will cost to keep heated...

I grew up in Oregon and they had giant hot tubs like this, they did not have covers.. It was a great big heated hot tub that they kept at 100 degrees at all times so I know it can be done.. I can only imagine the cost to keep it going but it was a very expensive resort..

You could also have a gas heater connected to it, not sure the most efficient way to do it, gas or electric....
This would be the ideal situation, but we unfortunately don’t have room for a second system. But thank you for thinking about it.
 

MDpool21

Member
Mar 22, 2021
12
Clarksville, MD
If you are going to go this route the plumbing needs to have a design to completely bypass the pool with double valve isolation. And you need to really learn what is what amd why it is there. If you have an issue PB may not be on call to help.
The larger spas amd swim spas are great, no comparison. My biggest issue with all this is the need to plan use. I have a standalone hot tub, I just got out of it. Had no plan to use it but had a rough day digging a pool amd got beat up. If I had to go outside amd heat the water and wait I'd be asleep already amd said screw it. Not to mention the gas bills
Thank you. I will pass this info onto our PB.
 

YippeeSkippy

Mod Squad
LifeTime Supporter
Jan 17, 2012
16,507
Evans, Georgia
Have you ever sat in a concrete spa?? Have you sat in a stand along hot tub?? Apples and Oranges for comfort.

The variety of jets and directed levels are far reaching a world above a cement spa.

The seats alone come in various shapes and loungers in a hot tub make you comfortable, unlike the hard straight cement spa.

Hot tubs for 8-9 are out there..... otherwise that large family will just have to take turns. ;)

Maddie :flower:
 

sl7vk

Active member
Jan 6, 2021
43
Salt Lake City, Ut
So your pool and spa share one set of equipment? Do you have any concern for freezing/bursting pipes in your pool if you keep your spa open all winter but close your pool?
Well, I didn't until I read this thread. My PB has the same setup himself and hasn't had issues.
Now you'll have me nervous. :oops:
As far as comfort, jets etc... I'm sure those prefabs are much better. They all look pretty horrible to my eye though. Form over function here for me I'm afraid.
 
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