Does anyone know if there's an issue with installing solar heating panels on a steep roof. I estmate my pitch is 14/12 (rise/run). All I can think off is reduced efficiency due to the high angle and increased back pressure due to the higher head. I have a 1.5 hp pump, btw. This section of the roof is the closest to the pump, starts at one stpory up, and is the only viable location. The rest of the roof is two stories up and would probably require a new pump.