I have 1250 sq. ft cabin that I keep at 72 degrees. To do this I have a 12000 BTU and a 6000 BTU and another 6000 BTU. I'm tempted to reinvest in a new system but I was wondering if it makes more sense to switch from a ductless system to a duct system.
Here are my options:
1) Replace my 3 units with 3 more units with the same BTU's
2) Replace my 3 units with 1 big unit (24000 BTU's say,)
3) Replace my ductless system with a duct system.
No matter the system I reinvest in, it'll probably cost me a lot. The question I have for you pros is which is the most sustainable equipment investment?
Note: The matter is a bit more complex because some mini-split air conditioners qualify for a federal tax credit due to The American Tax Payer Relief Act of 2012.
Sources:
http://senville.com/air-conditioner-tax-credits/ or here http://en.wikipedia.org/wiki/America...ef_Act_of_2012
Do you heat with these units as well? If you stick with the mini-splits, I have had good success with the Mitsubishi units that connect multiple heads to 1 outdoor unit. The compressor and fans are variable speed and the units are extremely quiet. I don't do resi installations so I don't know how the costs would compare. I don't know much about the rebates either as I don't get involved with this.
go for a ductless system with multiple heads, might as well get a heat pump unit as well, it would be great to heat a cabin until it got cold enough to warrant using a woodstove. ive heard great things about the mitsubishi units however dont work on them much. i install LG units and the customers seem to really like them.