This is an overview of Radiant Heat Supplies that will be necessary for a domestic water radiant floor heating system. The household hot water tank not only supplies your domestic hot water needs but also passes energy to the radiant heating setup to warm your house.

Hot water tanks are pretty standard, with most homes having a gas fired or an electric tank in the utility room. If you are buying a new tank, look for the high efficiency models to save heating costs. If this is an upgrade to an existing system, then using your old tank should work if it is still in good shape.

From the water tank, hot water flows to a Flat Plate Heat Exchanger. At this time, heat passes through the FPHE and into the heating system fluid which carries the heat away from this point and is replaced by cool fluid, which starts to warm up rapidly.

An endless loop is created as the circulating pump pumps the fluid around the diy radiant heat system. The Tubing and radiators release the heat into the house as the water goes along, and it returns to the FPHE ready to be brought back to temperature.

Some radiant heat supplies you will require are one way valves or check valves to stop fluid moving in reverse during this circuit. The hot water always needs to go in the correct direction to return to the FPHE.

Expansion tanks are necessary to keep a leak from developing or parts from being wrecked. As the circulating fluid is heated and cooled, it will grow and shrink enough to strech or break your tubing without one of these.

Manifolds are needed to split the water into multiple lines or loops. A supply manifold and a return manifold are common components of the diy radiant heat supplies.

You will find that you need a lot of clamps and fittings to assemble your diy radiant heat setup. If you run out during your project, don’t despair. You will be able to get more fittings locally, since they usually stock these items.

And that is our general rundown of radiant heat supplies for your diy radiant heat system using the domestic hot water tank. Good luck with your project!