Pump Size

[duraleigh]

Poolpup,

Poolman's advice is on the money. I have a full-rated 1.5HP pump for a 43,000 gal. pool (2" plumbing) and I would've been a little more efficient with a full rated 1HP. My only saving grace is I have a very large sand filter (950 lbs) so my system is ok.....just could've saved some money with less pump and had a little better system.

(Full-rated pumps are about .5HP stonger than up-rated pumps)

Stu,

based on your preliminary info, 1.5 sounds a little large for the pool....unless your going to drive both pool and spa from one pump.....then maybe a 2hp 2-speed would be a good mix. Others more experienced with spas than me will chime in soon and give you a better-educated answer.