David wrote: > But why are they more durable? If it's the bearings or the seals that > fail, why should this be any different on a 24V DC or 240V AC pump?
I suspect that it is because they are more substantial pieces of kit that use far more power. I looked at putting a mains circulation pump on Bream some years ago but the ones I saw were rated around 30-50W compared to less than 2W for the Bolin, and that's before inverter losses. Steve NB Bream
