Hi everyone.

STM · 07-10-16, 01:44 PM

Joined up because I'm interested in heat pumps. Currently building my own tiny 500 sq ft house and want to keep my bills low.

oil pan 4 · 07-10-16, 02:34 PM

500 square foot should only need 6,000 BTU per for cooling if it's well insulated.

STM · 07-10-16, 03:56 PM

Only R13 in the walls with 1/2" sheathing and 5/8 wood siding. 2' overhangs helps with the sun, only the back wall heats up in the afternoon but I'm adding a wash room and porch back there that will help that. R30 in the ceiling keeps the attic heat up there where it belongs. 12kbtu a/c in the wall has no problems at all keeping it cool inside. Only two windows helps too.

07-10-16, 01:44 PM	#1
STM Helper EcoRenovator Join Date: Jul 2016 Location: Mississippi Posts: 35 Thanks: 19 Thanked 2 Times in 2 Posts	Hi everyone. Joined up because I'm interested in heat pumps. Currently building my own tiny 500 sq ft house and want to keep my bills low.

07-10-16, 02:34 PM	#2
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	500 square foot should only need 6,000 BTU per for cooling if it's well insulated.

07-10-16, 03:56 PM	#3
STM Helper EcoRenovator Join Date: Jul 2016 Location: Mississippi Posts: 35 Thanks: 19 Thanked 2 Times in 2 Posts	Only R13 in the walls with 1/2" sheathing and 5/8 wood siding. 2' overhangs helps with the sun, only the back wall heats up in the afternoon but I'm adding a wash room and porch back there that will help that. R30 in the ceiling keeps the attic heat up there where it belongs. 12kbtu a/c in the wall has no problems at all keeping it cool inside. Only two windows helps too.