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Gas heat vs electric heat pump for pool?
Posted on 10/9/19 at 11:32 am
Posted on 10/9/19 at 11:32 am
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 10/9/19 at 11:34 am
5
Posted on 10/9/19 at 11:59 am to LSUvegasbombed
Gas will be able to heat quicker when recovering to a setpoint.
Electric will be slower but likely much cheaper to operate.
Electric will be slower but likely much cheaper to operate.
Posted on 10/9/19 at 12:00 pm to LSUvegasbombed
Hopefully someone can help you out but if not this place is a great source of info
Trouble Free Pool
Trouble Free Pool
Posted on 10/9/19 at 1:14 pm to LSUvegasbombed
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.
Posted on 10/9/19 at 3:25 pm to notsince98
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.
Posted on 10/9/19 at 4:06 pm to baldona
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.
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 10/9/19 at 4:08 pm
Posted on 10/9/19 at 4:17 pm to notsince98
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?
Posted on 10/9/19 at 4:37 pm to LSUvegasbombed
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 ??...
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 ??...
Posted on 10/9/19 at 8:51 pm to LSUvegasbombed
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.
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.
Posted on 10/10/19 at 10:21 am to baldona
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 10/10/19 at 10:22 am
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