Hi Mark,
I'm not sure how "well" the shop can ever be insulated. Apparently my
post wasn't clear on how the shop is constructed. The outside of the
shop is covered with corrugated sheetmetal. The inside walls, instead
of having something like sheetrock have 1/2" plywood nailed up
instead. The only way I can insulate is to have it blown in. The costs
to do that verses buy a good used heat pump are going to be less.
Don't get me wrong, I will be insulating the shop, most likely this winter
when I hope to have the time. If I size the heat pump for a moderately
insulated shop and have to suffer through slightly warmer temps I
would rather do that than nothing at all right now.
My major concern is that even after blowing in insulation into the walls,
how well will it work since there is nothing covering the seams of the
plywood on the walls. I can currently think of no reasonable means of
sealing those joints. Nailing something like screen molding over each
seam is out and the only thing I can come up with is smearing a bead
of caulk over each joint. Not my preference either.
A window unit would be pretty much worthless since there are only 3
windows and they are on one wall. The office which is a 12 x 12
room off the side of the main 25 x 65 area already has a small window
air conditioner.
Our shop is located in Rowlett close to lake Ray Hubbard.
Brad
On 2 Apr 2002, at 18:41, jmark.vanscoter@amd.com wrote:
> Buying your main AC now could be risky. A well insulated shop will use FAR
> less AC than one uninsulated. Suggest you just buy a window unit for a
> small area for now.
>
> Mark V.S. in Austin, TX
>
> P.S. Where are you in Texas?
>
> -----Original Message-----
> From: Brad Kahler [mailto:brad.kahler@141.com]
>
> Summer in Texas is fast approaching and I need to start thinking about (or
> is it to late already?!) installing an hvac/heat pump system in the shop.
>
> The shop is 25' x 65' with a 13.5' ceiling and 10' x 13' garage doors, one
> at each end. Galvanized steel outside, 1/2" plywood inside. Currently no
> insulation in the walls or the ceiling. That situation won't be corrected
> until this fall at the earliest.
>
> We would like a heat pump arrangement to allow us to heat the shop in the
> winter as well as cool it in the summer.
>
> Any susggestions on what size, brand, style heat pump to use? We would
> like a "single package" system installed outside with duct(s) running
> lengthwise down the center of the ceiling.
>
> A friend has suggested that we need about a 3 ton unit, possibly 4 ton at
> the most. I know very little about hvac and can't tell if this is right
> or wrong.
>
> I realize that with the lack of insulation we won't get optimal
> performance but some cooling is better than no cooling, right?!
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// http://www.team.net/mailman/listinfo
/// Archives at http://www.team.net/archive/shop-talk
|