New Pool Heater, what to expect / is something wrong?

[swammer3809]

I’m in my second full year of having a pool. We just had to replace our pool heater due to a leak, although it had a hard time doing anything at all last year anyways. It was on its last leg regardless.

New heater was just installed. Installer said to expect a degree increase every hour, but that has not happened. With my bad experience last year, I am already worried and I just want to know what to expect from it and how it should operate correctly (or if I’m doing anything wrong!) since this should be my first year of having a properly functioning heated pool.
Trying to gauge when the pool will be a swimmable temp or at least how fast it can get there when temps outside allow.

The details:
In ground
10K gallons
Heater is 103K BTU
Heater is a Hayward 5450ti heat pump
Running pump 2700-3000 rpm
Starting pool temp 61 degrees when heater was installed
I set the target temperature to 80 degrees
It was ~65 degrees air temp for about 10 hours following the install
Solar cover is on the pool
No blockage in returns/they feel like they are on full blast or close to it; baskets are clean of debris
Temperature after 10 hours of running heater - 63 degrees.

With weather in the 50-60s upcoming, I’m not expecting to swim for a couple weeks. However, I just want to have confidence that this thing is actually going to work this summer - it should it is brand new! But the temp only rose 2 degrees and couldn’t even reach to match the ambient temperature in 10 hours of running. If it jumped a few degrees more, I would feel good about it and then power it off until temps get warmer. But my test has not given me much confidence!

Am I getting worried over nothing? Or is there a problem?

Thanks!!

 

[PoolGate]

65 degree air temp that heater is not going to do much, if anything. If you got even a degree per day I would be surprised. A degree per hour is for a gas heater, not a heat pump. Also if you don't put the solar cover on when the pool is not in use you will not even maintain what that heater puts out in a day. Generally heat pumps are best for in-season use not shoulder months like we are in now. Gas heaters will heat very well in shoulder months.

 

[JJ_Tex]

Our pool sizes are similar, but my heater is 400k BTU, roughly 4x as large as your heater. I get about a degree per hour, so I would assume you would get 1 degree every 4 hours.
That seems in line with what you are experiencing, with the wild card being the air temp and any heat loss.

 

[PoolGate]

Our pool sizes are similar, but my heater is 400k BTU, roughly 4x as large as your heater. I get about a degree per hour, so I would assume you would get 1 degree every 4 hours.
That seems in line with what you are experiencing, with the wild card being the air temp and any heat loss.

Your heater is gas, his is a heat pump. Heat pumps are dependant on ambient air temps whereas gas is not.