After following so many recent build projects, I am thinking maybe my heater is too small (Hayward 5hp 140k btu)? We will likely only ever heat the entire pool (34x17 free form; 4-5 feet) for 2 months out of the year but we will use the spa frequently (approx 1-2 times per week). Spa size is 7 foot round. Any thoughts on if I should upgrade before our build?
Heater sizing
- Thread starter grumpiebk
- Start date
How do you have a horsepower rating on your heater?? I wouldn't use anything smaller than a 400K but heater if you are going to try to heat any size pool.
borjis
LifeTime Supporter
maybe referencing his pump which seems way over sized if it really is 5hp.
I'm 16x32 3.5 to 7 feet with a 250k btu heater. I'm satisfied with the performance and cost (about $ 30 a month for gas, only using when needed) so that one you have seems a bit small if your asking about it.
I'm 16x32 3.5 to 7 feet with a 250k btu heater. I'm satisfied with the performance and cost (about $ 30 a month for gas, only using when needed) so that one you have seems a bit small if your asking about it.
Yes, I misspoke. It is an electric heat pump and not a gas/propane heater. Bjoris, can you elaborate on your thoughts of it actually being oversized?
I'm not familiar with Hayward equipment but I have a little bigger pool and pentairs sizing tool led me to a 120k btu heat pump, the btu ratings on heat pumps are less than gas heaters.
I'm getting nervous reading some of these responses I have 16x32 free form 20,000 gal. And pb recommended a 117 rheem heat pump
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borjis
LifeTime Supporter
As I understand it after doing more research after confusing myself, electric heat pump options only go up to 140K BTU, while gas heaters go up to 400K+ BTU. The heat pump is more cost effective but takes longer to heat. Given I live in south florida and do not have natural gas or propane, the heat pump is a no brainer for me. It may struggle to get my spa to 103-105, but itll do the trick.
