Oh sorry guys,
I haven’t actually applied this method with any of my enclosures yet, although I deal with a stack of this style of heating through work here for commercial and residential properties. I’m just wanting to scale it down
Daavid is right, it’s a heat term using the reticulation of heated water. I’m looking at setting myself up about 14 enclosures and felt it may be a viable proposition to heat them all hydronically instead of by electrical means. So basically I’d use the method as described by TrueBlue and run a low-voltage reticulation pump hooked onto a 50ltr hot water unit through a copper pipe circuit. Naturally I haven’t given it too much thought yet, but I’m sure it’s highly achievable and would work with pretty good results. Another good thing about it is, it doesn’t dry up the air.
After speaking to Roy Pails about his power bill for heating all his animals it got me thinking

I offered him to give me a call should he ever decide to over-haul his current system. But I think the horse has bolted hehe