This article explores the new macro designer and other new macro features available in Access 2010. After reading this article, you will be able to take full advantage of what Access 2010 macros have to offer.
Rules For Sizing Your Heat Pump Pool Heater. 1  Size at 4 BTUâs per gallon or 1 BTU per litre of water. To heat in normal summer conditions when ambient air temperature average 70Â°F in a 24 hour period.  Size at 5 BTUâs per gallon or 1.3 to 1.5 BTUâs per litre of water.
Heat pumps range in size from 50K Btu's up to 150K Btus's. For an average inground pool, 100 Btus's may be a good size, with larger units for shady pools, large pools, or high wind areas. The cost to buy an inground pool heat pump is $2500-$3500.