Necessity of closing during winter?

Helter

Gold Supporter
Jul 14, 2022
15
SE PA, USA
New pool owner here... I'm in SE PA USA, we don't get super cold winters, but do spend a month or two with temperatures below freezing, and 0 degrees F isn't unheard of. We have a whole house generator, so ignoring the potential for a power failure that stops my pump, would there be a significant problem with leaving my pool running all winter? Will the pump circulation and salt be enough to keep the water from freezing, and avoid any significant negative consequences?
 

hexabc

Bronze Supporter
New pool owner here... I'm in SE PA USA, we don't get super cold winters, but do spend a month or two with temperatures below freezing, and 0 degrees F isn't unheard of. We have a whole house generator, so ignoring the potential for a power failure that stops my pump, would there be a significant problem with leaving my pool running all winter? Will the pump circulation and salt be enough to keep the water from freezing, and avoid any significant negative consequences?
There isn't enough salt in your pool to significantly lower the water freezing temperature. My advice is - don't do it...
 

jark87

Silver Supporter
Jun 5, 2011
964
Flower Mound, TX
Pool Size
25500
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
Assuming your system has a freeze guard, your pump will be running 24x7 when temps are slightly below 40°. Ours kicks on at 38°. I’m in Texas, so I never close my pool, but we’ve had some extended freezes that had me worried, especially in ‘21 when our power was cycling off and on and temps were below 0. If I lived in an area that spends a month or 2 below freezing, I’d close for the winter.
 
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Helter

Gold Supporter
Jul 14, 2022
15
SE PA, USA
There isn't enough salt in your pool to significantly lower the water freezing temperature. My advice is - don't do it...
Yeah, I found a chart and the level of salt in the pool doesn't seem to change the freeze point much.
Assuming your system has a freeze guard, your pump will be running 24x7 when temps are slightly below 40°. Ours kicks on at 38°. I’m in Texas, so I never close my pool, but we’ve had some extended freezes that had me worried, especially in ‘21 when our power was cycling off and on and temps were below 0. If I lived in an area that spends a month or 2 below freezing, I’d close for the winter.
I have a VSP, and run it 24/7. The schedule is 4 hours on high, 4 hours on medium, and 16 hours on low. What made me think of it is that my wife read a book by someone who swims every day, all year long, and wanted to give it a try...
 

JeanZ1

Bronze Supporter
Aug 15, 2017
148
Newark/DE
Pool Size
28000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-60 Plus
Do you have a heater? I imagine it would cost a small fortune to heat the pool in winter to a swimmable temperature.
 

trivetman

Bronze Supporter
Jul 14, 2017
605
Jenkintown, PA
Pool Size
24000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Im also in SE PA.

Ive seen one pool in the neighborhood that was designed to stay open year round but it was covered with a permanent tent enclosure and heated. Not an indoor pool but not exactly outdoor either.

I would not risk it.
 

TimZ

Member
Apr 30, 2020
23
Southeastern PA
Pool Size
30000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Also in SE PA (New London Twp) and our pool builder related a story of a customer in the area who insisted on having their system set up to keep the gunite spa running year round. Due to freeze protection, their first winter propane bill was ~$10,000. After that they gave it up.
 
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Casey

TFP Expert
Gold Supporter
LifeTime Supporter
Apr 16, 2007
12,787
SW PA
Pool Size
17000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
I'm in SWPA and I'd never attempt not winterizing my pool. The weather would destroy the pool lines.
 

ghall6292

Bronze Supporter
Jun 10, 2018
265
North Central PA
Pool Size
13500
Surface
Vinyl
Chlorine
Liquid Chlorine
I'm in NCPA and I wholeheartedly agree with Casey. You would be courting disaster by Christmas, no matter the year. Buy a membership at the "Y" if you need to swim all winter anywhere in PA.

Need more of a push? Total up the price of all that wonderful equipment in your signature. Every bit of it could be at risk. Winterizing all of it before freezing temps arrive, should take no more than a day. Opening it in the spring, the same. And it will probably be just as you left it. As for me, I wouldn't tempt fate.

Good luck on whatever you decide, though.
 

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