12v solar to heat water Answered
im looking to install a hot water cylinder with a 12v immersion heater powered by solar panels(to add wind later) to my hot tub.
the idea is to either heat the whole thing all the time or to at least reduce my power usage on the heat side of the running cost.
has anyone done anything like this and have any advice?
the basic install idea i have is,
solar panel/s to a controller
controller to a battery
controller to immersion heater
was also thinking of installing a normally open relay onto the stat of the heater so when it is at temp a fan heater would kick in, but that would be a later install if the water heating would work.
any info would be great, if i get enough info i will be doing this and making it into an instructable to further help adopt this to work better.