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  # 1345128 16-Jul-2015 08:28
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What model heat pump ? And sorry what kW is it again?




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  # 1345131 16-Jul-2015 08:38
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The important thing to know is she has a cathedral ceiling where the heat pump is, and to me this is where the issue lies, heat goes up and stays up, hence it takes ages to heat.

i would almost suggest pointing the vanes at the ground instead of across the room to try and encourage a flow of air through the room.

 
 
 
 


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  # 1345134 16-Jul-2015 08:47
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Jase2985: The important thing to know is she has a cathedral ceiling where the heat pump is, and to me this is where the issue lies, heat goes up and stays up, hence it takes ages to heat.

i would almost suggest pointing the vanes at the ground instead of across the room to try and encourage a flow of air through the room.
 

That. 

What we are doing is getting the ceiling insulated - by adding bats and plywood inside the existing ceiling. We'll also install a ceiling fan. I don't think the HP has the problem with the hot air sitting at the top of the ceiling (because it has a fan) - the log burner definitely does - and we use a small desk fan in the room which makes a noticeable difference. 

Carrier 6kw (I think I said 5kw before - double checked) 




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  # 1345259 16-Jul-2015 10:40
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lissie: ... we use a small desk fan in the room which makes a noticeable difference. 
...


One of the recent Consumer magazines (I couldn't find the article publishing date online) had running a fan as one of the three overall recommendations to improve the effectiveness of heating. A fan will mix the air more which has two main benefits:

 

  • it can mix the hot air from the heater with the cooler air closer to floor level.
  • it can break up convection patterns that are reducing the effectiveness of heating. The faster air moves then the faster it can transfer heat to colder surfaces like windows thereby causing greater heat loss from the room. Typically cold air drops from the window then hot air moves to the ceiling. This can create a circulation pattern that increases heat losses at the windows (or other cold spots) and increases the movement of hot air to the ceiling. Blowing air across (e.g. towards the coldest window/wall) or against (e.g. heater under a window or by the coldest external wall in a room) this air flow can break it down.

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  # 1346343 17-Jul-2015 15:58
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lissie: 

That said I don't want to run a heater 24/7 as some suggest in this thread - if you have to run a HP 4 x longer than a regular heater to warm a room - there is no savings in power to be had. 

The more I look into it there seems something very odd in the HP/heating industry.   Some people with 2 HPs running 24/7 report power bills for under $200 - others have reported huge power bills. There is something odd going on. 


I've just caught up with this thread, we have 2 Mitsubishi floor consoles running 24/7 (larger one in the living/dining/kitchen and med size in the lounge) we have it on auto fan and heat and using the temperature control ie turn it up to 20 when we are in the lounge and 21/22 in the living area and turn it right down to 16 when we go to bed and to work, when I get home the sun is streaming in the living area therefore I don't need to turn up the temp unless it is a cold miserable day, once up to temp it will idle and give little bursts of heat when required to keep it at the required temperature. Set it right and work it correctly and you will not be cold and not having huge power accounts. 

If you turn it on and off all the time it will use alot more power to get the room up to temperature but running it like I have mentioned will keep the room constant and not need to use so much power or take so long to heat a room. 

This is the 1st winter we have had 2 heat pumps and our power account just received is $281 but it would be less if our power was read each month but last one was an estimate and this one is a reading. 

Get a good quality heat pump to get your money's worth out of it. 

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  # 1346386 17-Jul-2015 16:33
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I guess whether it's best to keep it on or turn it on and off depends on insulation. For example we have a basic ventilation system that blows cold air in for 4-6 hours a day, if that way on with the heat pump it'd cost a bunch of money, but it really helps the air quality in the house to blow the moisture away.

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  # 1346396 17-Jul-2015 16:54
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I'm in a brand new house

 
 
 
 


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  # 1346409 17-Jul-2015 17:26
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that situation is totally different from running 2 heatpumps 24/7 to heat the neighbourhood




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