|Forum topic by WoodNSawdust||posted 06-09-2015 12:51 AM||727 views||0 times favorited||4 replies|
06-09-2015 12:51 AM
Currently my shop is not air conditioned and I use a unvented propane heater for the winter. As I age I am getting more sensitive to heat & humidity which cuts back on time in the shop. With current temperatures it may be September before I can comfortable be back in the shop.
I talked with my Brian my HVAC person and he recommended that I purchase a Mitsubishi ductless system running on electricity. I suggested a SEER rating of 21. Internet research shows that I can purchase a SEER 19 unit sized for my shop for around $2000 and SEER 21 unit close to $4000. I used several Internet calculators that tell me how much different SEER values cost to run and one told me it would take 14 years to recover the difference in costs between the two units.
Several years ago I looked at the cost of running Natural Gas to the detached shop and bids were coming in for around $600 simply to run the gas line. I don’t have the room in the shop for a full size furnace & AC and would have to locate it in one of those plastic sheds (4’ wide x 2’ deep x 6’ high) outside and then run duct work into the shop.
If I go with the Mitsubishi ductless system I would have to locate at one end of the shop (16’ x 36’) and expect the unit to blow air all the way down the 36’ length of the shop.
Before committing to spend this amount of money I wanted to query the collective wisdom of this forum.
Has anyone used one of these ductless systems? If so what are your experiences?
Would you trust the values that the Internet calculators for SEER costs?
I am leaning towards the lower SEER (19) unit figuring that I can use the money I save to do other things and who knows what I will be doing in 14 years. Your view?
Thanks in Advance,
P.S. When the shop was smaller (16’ x 20’) I tried a 120V window ac unit and it could not keep up. I think that it was a 5000 BTU unit.
P.S.S. I looked into a 18000 BTU window unit with heater but it is too wide to fit into a window requiring that I change the structure and install a larger window.
-- "I love it when a plan comes together" John "Hannibal" Smith