PeterP

I have a 16' x 36' pool located down a 45 degree hillside approximately 200' from a rooftop where solar panels could be located. It is also a little more than 200' and downhill from my gas meter to the pool house where a natural gas heater could be located. One solar contractor proposes 12 Heliocol 4' x 4.5' solar panels with a Pentair Intelliflo variable 4 speed pump to move water up the hill in 2" black solar pipe, through the panels and back down to the pool. A second contractor says the distance is too far for effective solar heating. The second contractor also thinks the distance is too far for natural gas flow, unless a separate 2" dedicated gas line from the meter is used. Please share any information on these issues.