evy wrote:
I will have a Tankless warer heater can it be used for that kind of system?
Is there a basic kit I can buy (hydronic) or is it a complete DIY project?
I would think your tankless heater could be used but installing an expansion tank might improve efficiency.
Yes, there are hydronic kits available but there are also an abundance of transmission coolers or other heat exchangers available in all sorts of sizes and configurations. An aluminum exchanger would be desirable as it fits the use of potable water. Same holds true for fans, millions available in all sizes.
There are a few threads about hydronic heating on the Forum. I am contemplating how to integrate hydronic into my trailer as auxiliary heat in a certain area. My main issue is that I have a metal fresh water tank and, in the Winter, that is a huge heat sink for cold air. It is located under a dinette seat and that seating area is frigid even with comfortable cabin temps. I may use the load control of my solar system and a heating element to raise the temp of the tank when empty (a 12 V heating pad) or/and a submersible element when it is full of water.