23 Aug 09 5:53 PM

Have a look at my solution at www.felixcollins.com. We saved lots of money and energy. Another big plus is stopping condensation damage to wooden joinery....read more

8 Jun 09 9:42 PM

I want to know why heat pump COPs are generally higher for lower powered units. I'm considering whether it is better (more efficient) to buy a larger unit that will run at a low setting most of the ti......read more