HVAC for Detached Garage
I am planning a nice energy efficient detached 48x60x14 building/workshop and I am the builder (what I do for a living) I asked a question about sheathing a couple weeks ago. My plan will be 2×6 walls with R23 Rockwool, 7/16 osb with taped seams, Tyvek, 1.5″ of EPS or Polyiso and most likely Intello on the interior walls and ceiling since I have some left over from a big project. It will have raised heel roof trusses with R60. I will have 2″ of sub slab insulation also. The building will have 3- 12×12 garage doors, 1 man door and 6 windows. I will do some extra gasketing around the garage doors to help with air sealing. The building will have a dividing wall that will separate the 2,880 sqft into approx 1,000 and 1,880. I am in climate zone 5a. I am in the country and propane is my gas source. What would you do for HVAC? I was planning on going ahead and running pex for in floor radiant heat. And then I figured a couple (or more?) mini split heads. I would have to run a gas line over to the building for the boiler on the radiant which wouldn’t be a huge deal. Open to suggestions/opinions on what you would change and what system you would go with. Thank you!
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