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  # 1328897 21-Jun-2015 22:32
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The air in the room may be warm that quickly, but leather seats take some time to get enough heat out of the air to not be unpleasent to sit on.





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  # 1328899 21-Jun-2015 22:41
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Jase2985: 
Heat pumps are as cheap if not more so than gas heaters to run and they dont use fossil fuels, and the engery in vs energy out the heatpump also wins
 

Right - and where do you think the electricity comes from? Around 50% of generation is from things like coal, gas, oil. Hydro is fine - but is an issue when there is a cold winter in the south - and of  course the Cook Strait cable has capacity issues. 

What's more the entire infrastructure of turning other forms of energy into electricity and then distributing around the country is totally reliant on fossil fuels for such little details as high-tension power lines and generators. 

If you are generating your own power from solar or your backyard wind mill I'd have some sympathy - but nope gas and electricity both are heavily reliant of fossil fuels - just like the rest of modern civilization. 

Ground source HP are a different story - but I don't think they are widely available here 




I help authors publish their books - DIYPublishing.co.nz

 
 
 
 


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  # 1328901 21-Jun-2015 22:48
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Jase2985: Heat pump was already here, and the DVS has significantly reduced the condensation in the bedrooms over night, im talking from crying windows with puddles on the window sills to a light misting in the morning. The house is soo much easier to heat and also to keep warm. you might think its crazy but it works. Its also a old 1950's weather board house with no insulation in the walls and leaking wooden windows. 


That's odd - I never had an issue with crying windows in our old 1940's wooden windowed, uninsulated home - the one we ran unflued gas in. I think the condensation is a separate issue. We have pools of water  on the sills in he bedrooms too - but that's because the original 80's aluminium joinery can no longer stand up to a strong NW . New DG upvc windows are high on the list. 

you have a heat pump there that can do everything your gas heater can do and more. it can heat, cool and dehumidify, and they are cheap to run, don't add moisture and any potentially harmful fumes/byproducts into the air.

 

https://www.consumer.org.nz/topics/home-energy-costs
Heat pumps are as cheap if not more so than gas heaters to run and they dont use fossil fuels, and the engery in vs energy out the heatpump also wins

 

The graph is highly annoying - because they don't mention unflued gas heaters running on CNG - which are more efficient than the flued ones - so I suspect rather  cheaper to run than HPs! 

 

if your heatpump cant heat your room quickly, then its one of 3 reasons, its the wrong size for the room, its faulty and not running right, or you are using it wrong.

 

It's on heat and the fan is on high - what else can you do with them - the temp  is set at 23 or 25 or 20 - I've tried them all. Also tried auto fan - was even less effective. It does work, eventually, so long as it's not too cold There's nothing wrong with it according tothe service tech 




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  # 1328961 22-Jun-2015 08:14
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lissie:
Jase2985: 
Heat pumps are as cheap if not more so than gas heaters to run and they dont use fossil fuels, and the engery in vs energy out the heatpump also wins
 

Right - and where do you think the electricity comes from? Around 50% of generation is from things like coal, gas, oil. Hydro is fine - but is an issue when there is a cold winter in the south - and of  course the Cook Strait cable has capacity issues. 


you are highly mis-informed

In 2011, around 37.1% of the total electricity generated was consumed in the South Island, while 62.9% was consumed in the North Island. South Island generation accounted for 40.9% of the nation's electricity in 2011.
If all currently commissioned generation is available, both islands have enough generating capacity at peak times, without the connection between the two islands. However, the HVDC link provides benefits for customers in both the South Island and North Island:

 

  • The link provides the South Island consumers with access to the North Island's thermal generation resources that can support the South Island demand during times of low hydro storage levels and low inflows to South Island hydro lakes.
  • The link provides North Island consumers with access to the South Island's large hydro generation resources that can support the North Island demand at times of peak load.
and

in the quarter to march 2015, 76.9% of NZ's energy was generated by renewable sources, with the yearly average being 79.3%.

lissie:
The graph is highly annoying - because they don't mention unflued gas heaters running on CNG - which are more efficient than the flued ones - so I suspect rather  cheaper to run than HPs!

 

because they might be uncommon? look up many of the sites in NZ and they advise against using unflued gas heating anyways.

if the settings are correct then there must be something wrong with it if its not warming the room quickly.

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  # 1328971 22-Jun-2015 08:43
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You can also see a live report of what's generating our power here. I suspect gas is up higher than average today because it's cold - everyone has heating turned up high.

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  # 1329004 22-Jun-2015 09:16
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timmmay: You can also see a live report of what's generating our power here. I suspect gas is up higher than average today because it's cold - everyone has heating turned up high.


thats a cool page :)

i just turned my heatpump on, its 16 inside and im gonna do some study so want it a little warmer. Its set to 20 fan on auto. currently the air coming out of it ~50deg c (measured with a thermometer) and the fan is on full, not going to take long to warm up.

10mins later and its 3deg c warmer inside.

Ps its a Toshiba unit which is made in conjunction with carrier :)

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  # 1329041 22-Jun-2015 09:49
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jeffnz: ...Gas is more expensive and less efficient than a heat pump and as others have already stated it will create moisture which the HP takes away.


When it's used as a heater a heat pump doesn't take away moisture.




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  # 1329061 22-Jun-2015 10:17
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I've found heat pumps on dehumidify cycles pretty ineffective. On cooling they obviously remove water from the air.

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  # 1329342 22-Jun-2015 15:28
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timmmay: I've found heat pumps on dehumidify cycles pretty ineffective. On cooling they obviously remove water from the air.


And the constant switch between cool and heat is really inefficiant. couple of hundred dollar freestanding dehumidifier does a much better job for way less power and you get all the warmth from it as well.




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