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LSUvegasbombed
LSU Fan
Red Stick
Member since Sep 2013
14647 posts
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Gas heat vs electric heat pump for pool?
Anyone have comments on this? Redoing a pool soon and quote is with gas. I had someone tell me electric was better.
This post was edited on 10/9 at 11:34 am


notsince98
Missouri Fan
KC, MO
Member since Oct 2012
10907 posts

re: Gas heat vs electric heat pump for pool?
Gas will be able to heat quicker when recovering to a setpoint.

Electric will be slower but likely much cheaper to operate.


CAT
LSU Fan
Central Arkansas
Member since Aug 2006
6357 posts

re: Gas heat vs electric heat pump for pool?
Hopefully someone can help you out but if not this place is a great source of info

Trouble Free Pool


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bluemoons
New Orleans Saints Fan
the marsh
Member since Oct 2012
4195 posts

re: Gas heat vs electric heat pump for pool?
My folks have an electric heater and it’s awful. Cheap to operate, but there are times in winter where it takes several hours just to heat their hot tub.


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baldona
Auburn Fan
Florida
Member since Feb 2016
10472 posts

re: Gas heat vs electric heat pump for pool?
quote:

Electric will be slower but likely much cheaper to operate.


I have absolutely no idea for pools, but how is electric cheaper to operate then gas? This would be about the only thing I’ve heard of where a gas heater is more expensive.


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notsince98
Missouri Fan
KC, MO
Member since Oct 2012
10907 posts

re: Gas heat vs electric heat pump for pool?
Heat pumps don't convert electricity directly to heat. They transfer heat from one place to another which makes it very efficient when it comes to a BTU/kWh comparison.

Essentially, heat pumps can "create" (it is really moving heat, not creating) about 3W in equivalent BTUs for every 1W consumed making them operate at 300% "efficiency." Unless gas really cheap and electricity is really expensive, this makes heat pump heat cheaper than gas heat.

Electrical resistive heating is a different story. Electric strip heaters are only 100% efficient and this isn't enough to makeup the cost difference between gas and electricity at the thermal unit level.
This post was edited on 10/9 at 4:08 pm


baldona
Auburn Fan
Florida
Member since Feb 2016
10472 posts

re: Gas heat vs electric heat pump for pool?
I’m not arguing just educating myself. Why are gas instant hot water heaters better then electric but pool pumps the opposite? Don’t they do the same thing?


habz007
LSU Fan
New Orleans
Member since Nov 2007
1442 posts

re: Gas heat vs electric heat pump for pool?
Gas heater ... hot tub will heat up within 10-15 mins or so. I’ve actually timed and graphed it a few times out of personal curiosity, and it seems to heat pretty linearly. In my experience, just over a degree per minute for hot tub.

I’ve heated up hot tub in dead middle of winter here at outside temp of 29° up to 102° in under an hour (granted the starting water temp was probably closer to high 40’s at the time).

In the ’off season’, it will heat up the whole pool in 12+ hours or so. I usually flip it on and let it heat overnight to be ready for the next day for nice spring or fall days with outside temps of 60-70s.

I’ve been told from few sources that electric heaters are garbage and not worth it. Though I have no direct proof. Maybe they’ve improved ??...


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Alleman
LSU Fan
St. George
Member since Apr 2013
584 posts

re: Gas heat vs electric heat pump for pool?
If you have only a pool and not an attached hot tub, have you considered option C: solar?

The benefit of solar is it is actually a heat exchanger, not a heater. Run the pool pump through the grids at night in July and August to lower the pool temperature.


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notsince98
Missouri Fan
KC, MO
Member since Oct 2012
10907 posts

re: Gas heat vs electric heat pump for pool?
quote:

I’m not arguing just educating myself. Why are gas instant hot water heaters better then electric but pool pumps the opposite? Don’t they do the same thing?


You can't get a tankless heat pump water heater. Tankless electric water heaters are electric strip, not heat pump. That is why gas is better for those when it comes to operating costs.
This post was edited on 10/10 at 10:22 am


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