Heat pump, Good Idea?

wingnut771 said:
That’s what sacrificial anodes are for. Besides, don't geysers that are connected to heat pumps also burst?
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Yeah but you only have to deal with 1. Now imagine the complications of 3. 3 days of rain and you are still stuffed also. What do you do then? And you would need some 20kWh to heat all 3 geysers.
 
denmendez65 said:
Yeah but you only have to deal with 1. Now imagine the complications of 3. 3 days of rain and you are still stuffed also. What do you do then? And you would need some 20kWh to heat all 3 geysers.
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Turn on the genny. Yeah, just have 2 geysers in series. Then its not complicated.
 
Sideshow Bob said:
You seem to know a bit hence the question. I wonder if gas based water heating solution is available to supplement swim pool heating that works with existing pool heat pump and solar 5kW kit + 4 batteries.
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In theory you could add some stop taps

Ball valve on return pipe after heat pump, slight restriction by slightly closing to force flow in geyser direction

Gland clamp on either side

Ball valve on each to kill any flow through gas geyser , since it will radiate heat if not heating

So when you want to use it open valves on glands , and fire it up

No idea how the running cost would compare , to increase heat pump size or add another heat pump in series
 
I bought my place with a heat pump. 7kw or something, I think. The fscking thing never worked properly, so I just used the geysers as is and switched off the heat pump at the isolator. I have 2 x 200L geysers. The temps were never high enough with the heat pump.

In 2021/2022 I got solar. And I connected the whole house on the essential side.
They 2 geysers run staggered during the day off the solar, never at the same time.

I suspect my geysers are connected in series. Not sure. The plumbing of this place was a clusterfsck.

So people tune me, why do I run both geysers if I live alone? The problem is, if I switch either one off, the water is not hot enough.
Not sure if I should investigate this again. The current heat pump that is sitting idle also looks pretty fscked with corrosion etc.

The BIGGEST issue is that there is fokolll space in the roof to inspect the installation and connection of geysers properly. The kunts installed the geysers, then fitted the roof sheeting. Best of all is that these 2 geysers are mounted above the master bedroom bed in the ceiling.

When these geyers go pop I will replace them on the outside wall.
 
leon.davibe said:
In theory you could add some stop taps

Ball valve on return pipe after heat pump, slight restriction by slightly closing to force flow in geyser direction

Gland clamp on either side

Ball valve on each to kill any flow through gas geyser , since it will radiate heat if not heating

So when you want to use it open valves on glands , and fire it up

No idea how the running cost would compare , to increase heat pump size or add another heat pump in series
Click to expand...
They sell a thermal activated switch that kicks in to supply the shower/bath with heated water from the gas geyser at whatever temp you specify. So it sits idle until the water from the geyser hits your temp which would happen whenever the solar wasnt enough to heat from the tubes, inverter or controller OR when too much hot water was used.. They have thought about this stuff already. But a good idea nonetheless.
 
W@P said:
I bought my place with a heat pump. 7kw or something, I think. The fscking thing never worked properly, so I just used the geysers as is and switched off the heat pump at the isolator. I have 2 x 200L geysers. The temps were never high enough with the heat pump.

In 2021/2022 I got solar. And I connected the whole house on the essential side.
They 2 geysers run staggered during the day off the solar, never at the same time.

I suspect my geysers are connected in series. Not sure. The plumbing of this place was a clusterfsck.

So people tune me, why do I run both geysers if I live alone? The problem is, if I switch either one off, the water is not hot enough.
Not sure if I should investigate this again. The current heat pump that is sitting idle also looks pretty fscked with corrosion etc.

The BIGGEST issue is that there is fokolll space in the roof to inspect the installation and connection of geysers properly. The kunts installed the geysers, then fitted the roof sheeting. Best of all is that these 2 geysers are mounted above the master bedroom bed in the ceiling.

When these geyers go pop I will replace them on the outside wall.
Click to expand...
@wingnut771. See the complications with 2. Now imagine 3
 
denmendez65 said:
They sell a thermal activated switch that kicks in to supply the shower/bath with heated water from the gas geyser at whatever temp you specify. So it sits idle until the water from the geyser hits your temp which would happen whenever the solar wasnt enough to heat from the tubes, inverter or controller OR when too much hot water was used.. They have thought about this stuff already. But a good idea nonetheless.
Click to expand...
He was asking about pool

Temp assist from gas geyser

So will likely not run all the time

The problem with heating devices like plastic solar panels on the roof and gas geyserbin this case

Is when they don't heat they work in reverse too, kinda like radiater in a car the the gas geyser aluminim radiater fins will actualy help lose heat if above abient temp
How hig the loss will be no idea

Just know from experience
If you put the pool pump on overide to get a bit more at tbe end of tbe day and forget it on

You lose a lot of heat in reverse

Assume the radiater in gas heater will do the same the moment the temp is above ambient if not using it, the ball valves is to takenit out of circulation when not used
 
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