Larry Jaques wrote in
:

Bill, as I said, insulate that space and use a fan-blown electric
heater or two (on separate circuits, yeah?) to get the space heated so
you can work. I saw you link to a convection heater. Forget that.
Forced air is the only type of heat to have, period. I worked in a
shipping and receiving area in a warehouse in '75. It had radiant
heaters and we were always cold. I moved to Oregon and the house came
with 240v baseboard heaters (convection). When they were running, my
ankles were cold and when I stood up, my forehead instantly broke out
in a sweat. I immediately installed a nice Carrier HVAC. It's my first
air-conditioned home/shop and I love it. (For $6k, I'd better, huh?
But I wouldn't have it any other way. I'm gas heated.)

Convected air stratifies, forced air blends. For comfort, go with
forced air.


I'm partial to the system I've got in the shopwarehouse* myself. It's in
slab hot water, so once the slab gets warm heat recovery is very quick if
the garage door needs to be opened. (It's a big garage door. 10x17)
When the temperature approaches 0, the shop is still nice and warm.

No idea how much propane the boiler actually uses itself, this will be
the first year heating the house through electric forced air.

(*shopwarehouse: building used for storing every else's junk. Wish
they'd find somewhere else to put it.)

Puckdropper