Swimming Pool Blog

5 Myths about Solar Pool Heating

5 Myths about Solar Pool Heating
Mark Garcia February 25, 2014

If you've been a reader of this blog for some time, you know that we are partial to solar pool heaters. I have installed many pool solar heaters over the years, in all places both north and south.

There are a few misconceptions about solar pool heaters, mostly discussed by people that have never installed or even seen a solar pool heater in action.

This post is about some of those Myths of Solar Heating for pools - the ones that I keep hearing over and over again ~


Solar heating takes too long to heat up.

I have seen it written, that a solar heater can only do 1 degree per day, to a maximum of 7 or 8 degrees per week. Well, I have to tell you, I've seen it add 7 or 8 degrees in a day! It just depends on how many solar panels you have, and how much sun exposure you enjoy. I had one customer who could heat her attached outdoor spa to 105 degrees - in only 30 minutes! That's as fast as any gas heater could do. Of course, she could only do that during the day... 

Solar heating only adds as much heat as the outside air temperature.

The theory here is that if it's only 75 degrees outside, you can only get the pool up to 75 degrees using a solar pool heater. Nonsense, you can easily raise the temperature of the water to a higher level than the outside air. In fact, that's commonly done with solar systems as the end of the day, to boost the heat up before the sun goes down.

Solar heating only works on bright, sunny days.

It works best on bright, sunny days - but even on overcast days, where the sun rarely makes an appearance, it can still pull some heat out of the air, on a warm day. If it's raining however, or cloudy with low temperatures, running the solar pool heater is best avoided, as it can actually cool the pool. Using a solar controller will maximize the heat on cloudy days.

Solar heating only works in Florida.

Did you know that many solar heater panel manufacturers are located in Canada? And, solar heaters work well in all parts of North America. Again, it all depends on how many panels you have and how much sun exposure you get. If you can put an amount of solar panels equal to at least 50% of the pool surface area, and mount them in a southerly direction, you'll have more heat than you can imagine.  

Solar pool heater panels are ugly

To some perhaps, but to someone that likes saving money while saving the planet, those black mats on your roof are a badge of honor, and a real conversation piece. You can also mount pool solar panels out of sight, on the backside of the fence, or on top of a shade pavilion or pool house.

Take a look at our selection of solar pool heaters and solar controllers, if you think are thinking about solar panels to heat your pool!


Thanks for Reading!
Mark Garcia