In Floor heating

[Slick Fork]

Hi there,

I'm hoping someone out there can help me out... On our acreage, I have a detached shop/garage. The building is split in two with a workshop side and a garage side. Currently each side has a hanging forced air propane heater that are ridiculously expensive to run.

Now, the previous owners (we've been here 3 years) had installed the beginning of an in-floor heating system on the workshop side by laying the pex pipe down and pouring a concrete slab on top. So my question is, I'd like to finish the work on the in-floor system... from what I can see I'll need an expansion tank, manifold, heat source and circulation pump.

Now, drawing on my plumbing experience from the tank, I'm not worried about installing the manifold or the expansion/pressure tank. My question is on sizing the heat source and circulation pump.

So, given the portion to be heated is roughly 600 Sqft, with a very tall ceiling what can I use for a heat source? I was hoping for the sake of simplicity to put an electric hot water tank in.

What sort of flow and what can I use for a circulation pump?

And finally, Is this stuff I can get at Home Depot, Rona, Totem etc.?

Thanks