Pool heat pump what what size ?

[FIESTA62]

hi, about to install a electric heat pump for a 37000 litre inground pool, any advice on what size pump to extend the swim season from say sept to april in sydney, average climate, would be great, thanks

 

[Newdude]

The larger the BTUs the quicker it heats. If you have double the BTUs you will need to run it half as much for the same gains. Maybe a tad more because with all that downtime you'll lose a degree or two and have to turn it on again. But anyway, the investment upfront will pay for itself many times over.

 

[FIESTA62]

The larger the BTUs the quicker it heats. If you have double the BTUs you will need to run it half as much for the same gains. Maybe a tad more because with all that downtime you'll lose a degree or two and have to turn it on again. But anyway, the investment upfront will pay for itself many times over.

ok but there must be a point where it just gets overkill, like i have used online calculators and get various answers, 10kw then 16kw, one guy said get 19kw, i am thinking 16kw, i am not worried about upfront cost, but am thinking about running cost, seems no sense in running a pump that way too big, but thats the question what is a good size without being overkill

 

[Newdude]

Maybe with your 10k gallons and a 420k BTU gas heater, but the heatpumps max around 140k BTUs so it won't be overkill. Hang tight and some other folks will chime in.

 

[FIESTA62]

heres a list of the system options, i am thinking the 16kw model for my 10000 gal or 37000 litre pool