tag:blogger.com,1999:blog-281962575565507483.post8301602683543815989..comments2008-06-22T19:55:29.674+01:00Wayne Bennetthttp://www.blogger.com/profile/00396742905099443678noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-281962575565507483.post-22945311053939157462008-06-22T19:42:00.000+01:002008-06-22T19:42:00.000+01:00These rules of thumb tie into my experience over the last 6 months.I have 5 people in the house, and have a 250 litre tank with a 3.3m2 panel (vac tubes) I really should have bought 4 or 5 m2 of panel. Only on the very very sunniest of days does the panel "do the biz" - heat all the water up to 50 deg+Anonymousnoreply@blogger.com