4 - 4X8ft. Sun Earth collectors		Collectors removed November 2021 now using this system as backup for heat pump.
Rheem 80 gal. water heater used as storage tank		System discontinued completeley April 2024.  All parts were scrapped, sold or recycled.
I drained and filled the collectors seasonally since they would over heat in the summer.  If antifreeze gets too hot it will turn acidic and rot the copper pipes.  We have a long heating season in Maine and I fill after the first frost and drain once temperatures get above 40F consistently. DRAIN FILL 05/22/09 -- 05/03/10 -- 05/31/11 -- 05/33/12 10/05/12 05/29/13 10/12/13 06/01/14 10/20/14 06/29/15 10/16/15 06/01/16 10/08/17 06/14/17 09/01/17 06/14/18 10/04/18 06/24/19 10/11/19 06/05/20 10/05/20 11/4/21 10/06/21