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Thread: Cooling pool water

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    Cooling pool water

    It is really hot here in the summer and I don't like swimming in hot water. I assume that a pool heat pump can be used for cooling as well as heat. Does anyone cool their pool with one? Expensive to operate?

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    Mod Squad Texas Splash's Avatar
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    Re: Cooling pool water

    Unlike home heat pumps, I wasn't aware that pool heaters actually worked the same way (in reverse). Update - Actually there are. Duh (see below). However, I suspect most folks cool their water off by incorporating a fountain or sprayer that lets the air hit the water as it falls back to the pool's surface. This actually does quite well. You can find many examples of TFP by doing a search, some of them like these:

    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: Cooling pool water

    As I researched Rheem heat pumps for our future pool, there are certain models that will cool as well as heat. They seemed to just be more expensive than heat only models.

    I can not speak to efficiency though.


    18x36 vinyl liner , Hayward Sand Filter, Maxflo VS pump, Hayward VS Omni automation, Rheem 115k Heat pump, Colorlogic LED. Dolphin 400 robot. Build date: Spring 2018.
    18x36 vinyl liner ,19k gallons, Hayward Sand Filter, Maxflo VS pump, Hayward VS Omni automation, Rheem 115k Heat pump, Colorlogic LED. Dolphin M400 robot

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    Mod Squad Texas Splash's Avatar
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    Re: Cooling pool water

    As I researched Rheem heat pumps for our future pool, there are certain models that will cool as well as heat. They seemed to just be more expensive than heat only models.
    Well I'll be ...... ! There you go Dave. I really need to get out more often. While I have yet to hear of anyone mentioning them, they do have a "specialty" line that has some cooling capabilities.
    Rheem Specialty Heat Pump Pool Heaters Series

    So I spoke too soon on this one. Thanks for the correction and info TB!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Mod Squad YippeeSkippy's Avatar
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    Re: Cooling pool water

    Here inland of Savannah in Augusta I found our fountain run at night *really* cools the pool.

    Unless you've got bucks to spare I just don't see needing a cooling /heat pump in Savannah.

    Now in Arizona or some place like that, yeah, I can see it.

    But.. like I said.. if you've got the bucks to spend, go for it!

    Maddie
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Re: Cooling pool water

    Quote Originally Posted by Texas Splash View Post
    Well I'll be ...... ! There you go Dave. I really need to get out more often. They have a "specialty" line that has some cooling capabilities.
    Rheem Specialty Heat Pump Pool Heaters Series

    I did not know. Thanks for the info TB!
    Heat pumps are specifically designed for this purpose - A/C in the summer and then reverse the coolant flow for heat in the winter.
    29k Gallon Free Form Gunite Pool, 3 floor returns, 2 wall returns, 1 vacuum pressure port, 2 skimmers, Main drain, Jandy JXI400N Gas Heater, Jandy CV340 Cartridge Filter, FusionSoft 1400 SWG, 2 Watercolors LED, iAqualink with PDA, Sheer Waterfall, Rock Waterfall, 9' Deep End w/Diving Board, SunDeck, Polaris 9650iQ, TF-100 - Pool Build - 2017 - Google Photos

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    Re: Cooling pool water

    Pentair has had heat/cool heat pumps for close to fifteen years.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

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    Mod Squad Texas Splash's Avatar
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    Re: Cooling pool water

    Pentair has had heat/cool heat pumps for close to fifteen years.
    I'm going to take a lot of heat (no pun intended) for this one. That's okay, I'm allowed one mistake per year.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    jeremycrook's Avatar
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    Re: Cooling pool water

    Quote Originally Posted by Dave31410 View Post
    It is really hot here in the summer and I don't like swimming in hot water. I assume that a pool heat pump can be used for cooling as well as heat. Does anyone cool their pool with one? Expensive to operate?
    I have a heat pump / chiller that I like. Jandy model JE3000TR, my energy bill always raises in the middle of summer so I can't tell you how much extra it is using the Chiller pump. If the water gets above 90 and it's really hot outside I can run the chiller and see a significant difference in the jets / fountain's / bumblers temperature. If you wanted to you can also use the Heat Pump to keep the water a constant temperature if you desired, you can set it like a temperature thermometer in your house.
    ~10,000 IG / JANDY CV580 FILTER / STEALTH 1.65 PUMP / TRU CLEAR 11K SWG / JE PRO HEAT PUMP / POLARIS 280 (RO-BOT-IA) W/BOOSTER PUMP / 8X8 BEACH W/2 BUBBLER / TF-100 TEST KIT / 4 DECK JETS / SPEED-STIR

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    Re: Cooling pool water

    Quote Originally Posted by YippeeSkippy View Post
    Here inland of Savannah in Augusta I found our fountain run at night *really* cools the pool.

    Unless you've got bucks to spare I just don't see needing a cooling /heat pump in Savannah.

    Now in Arizona or some place like that, yeah, I can see it.

    But.. like I said.. if you've got the bucks to spend, go for it!

    Maddie
    In Arizona we have such high evaporation rates due to the dry air that an uncovered pool can easily maintain 85-90 degrees without any intervention. A pool left covered during the day can get up near 100 degrees plus though.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Re: Cooling pool water

    Do you have any solar installers in your area (what area doesn't, now-a-days)? Pool solar heating systems can be used to cool a pool. They don't always offer the same capabilities as heaters and heat pumps do, in terms of when they can heat/cool a pool, but they are generally much more cost effective (less to install, less to run, last longer, better warranties, etc). Maybe something to look into before deciding on a heat pump...
    12300 gallon IG pebble, freeform 19x28, 1 skimmer, 3 returns, no floor drains, auto fill. Pentair: EasyTouch PSL4, ScreenLogic2, Indoor Control Panel, Intelliflo 2 VST, IntelliChlor IC40, IntellipH, CCP320 Cartridge Filter, MasterTemp 250 Heater, Rebel Suction-Side Cleaner, IntelliBrite. Solar and cleaner actuators. Heliocol HC-50 8-panel solar heating. FlowVis Flow Meter. Taylor: K-2006 and K-1766 Test Kits, SpeedStir. City/softened water.

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    elwood58's Avatar
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    Re: Cooling pool water

    We have a Pentair Heat/Chill Pump. It is far from economical if you set it and forget it, but it does get the job done. Heating is most efficient during the sunlight hours, and cooling works best overnight. I can knock the pool down 10 degrees overnight. Heating is typically used to speed up the start of swim season, or extend it a little. We heated our 20K gallon pool up to 88 degrees for Thanksgiving week. We have 30 solar panels generating power, which does take the sting out of running the heat pump.
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

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    Re: Cooling pool water

    Yep, when I first researched heating my pool, the solar guy wanted to install a heat pump and the PV solar panels to power it (in addition to a PV system to power the whole house). So that is one way to go to heat/cool a pool and control the cost. (I'm in the camp that believes a PV solar system will pay for itself in short order, about six years in my case.)

    I have PV solar now, and am enjoying zero PG&E bills. But I still went with water-solar panels to heat my pool. They don't extend my swim season as well as a heat pump would, for sure, but because the PV panels accommodate the extra pump time the water panels require, I'm heating my pool "for free."

    The heat pump units are, what, $5K? Or more? And they can break down. What are maintenance costs over time? And they don't last all that long, if my research was right. Five years? Ten years? Not sure. What are replacement costs over time? But my water panels are warranted for 20 years, and I installed them myself for about $3K. I think I compromised my warranty by installing them myself, but I'm rolling the dice there. Had they been installed by the solar company, it would have cost considerably more, and I would have gotten the full warranty. I'm gambling that a product that an installer would warrant for 20 years, will last that long, even if installed by me. Even if not, the panels are about $300 each, so I can just replace any that fail (probably the cost of a service call on a heat pump). Even if they all failed during the 20-year-expected lifespan, that's about $2400 to replace them all. So I'm still under what a heat pump would cost, not counting its running costs (the electricity, repair and replacement).

    Sorry, not sure I explained all that well enough. There are lots of ways to heat/cool a pool and pay for it all. I'm just suggesting you do all the math before you decide, including how a whole-house PV solar system could work into the figures. My PV system cost about $12K and is warranted for 25 years. And in six years my electricity will be "free." So, conceivably, I've pre-paid a lifetime of pool heating costs. It'll then be a race as to which will wear out first... the PV panels... the water panels... or my body!!
    12300 gallon IG pebble, freeform 19x28, 1 skimmer, 3 returns, no floor drains, auto fill. Pentair: EasyTouch PSL4, ScreenLogic2, Indoor Control Panel, Intelliflo 2 VST, IntelliChlor IC40, IntellipH, CCP320 Cartridge Filter, MasterTemp 250 Heater, Rebel Suction-Side Cleaner, IntelliBrite. Solar and cleaner actuators. Heliocol HC-50 8-panel solar heating. FlowVis Flow Meter. Taylor: K-2006 and K-1766 Test Kits, SpeedStir. City/softened water.

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