Go with the heat pump, or gas and AC, and you will never be sorry. You will
love an AC shop. Put it in so that it does a good job on the upstairs, and
let a little heat or AC ( a couple outlets that can be closed ) into the car
As far as the in floor DC system goes, you will never want anything else,
once you have one of these. No more ducts in the way every time you swing a
piece of wood.
Oooooo my favorite,
In Floor radiant heat is great. The heat stays near the floor, and heat
loss is very small compared to Hot air. If you opened a door in the dead of
winter the loss would be less. It would be great to be under a car and not
have the cold from the concrete try to kill you.
That said there are a few disadvantages. First is the fact that if you want
AC you have to install a second system often doubling the cost of your HVAC.
2. Not all PEX is designed to go in concrete. 3. It does take some
specialized equipment to install PEX. A plumber may have some of the
equipment. 4. In floor heating needs an Heat loss calculation as does any
HVAC assessment for that matter.
That said, Grainger is a good place to look for boilers, furnaces, blowers
(for AC only systems) etc. They are cheaper and you won't put a huge
investment in a name brand that you might use only once or twice a week.
And yes radiant heat uses the same basic heating equipment as other hot
water systems. The system is totally enclosed circuit. IF you get air in
it you are probably losing water.
Your DC: not much wrong with an infloor system. The advantage is that
gravity helps suction, and sometimes the pipes are more accessible. The
disadvantage is the pipes are more permanent so if you get a new tool you
may not be able to rearrange the shop. Takes a bit of forethought. IF you
add a DC from a reputable company such as Oneida they may be able to help
you design the system.
"Violin playing and Woodworking are similar, it takes plenty of money,
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