I have a 40,000 gallon pool that has always run on a 1HP single-speed motor - with a Hayward Super II pump housing. Pool is run for 3 months in Colorado. I never turn off the pump for those 3 months - it's just how I have done it. Cost is $400/mo. My pump motor just died again - it seems to die every 2-4 years. I read about the variable speed pumps but really don't want to spend the money and deal with replacing the entire pump housing, etc. So, what about a 2-speed pump? My question is, with this large of a pool, how many HP of a motor should I get because it will mostly run at the slower speed - and, can I put a larger HP motor into my current pump housing?
Thank you to anyone that replies.