Heat pumps are shit!

[Max Preload]

How'd I do?

not very well i think

Really?

when you ask for info after telling them,the supplier,waat you expect and that waat you expected is not delivered one has every right to make comments! and when you find out that the goods supplied have been dumped in NZ from Aussie and said suppliers to one of our bigger DIY and building suppliers has vanished!

What I gather from that is you bought a heat pump, on the cheap, from a fly-by-nighter, who undersized it and now you want the heat pump you should have bought in the first place from a reputable supplier, at no further cost to yourself.

Seems like much the same thing to me. Just more concise. Correct the bit's that are wrong.

[eldog]

I supply and install Mitsubishi Electric ( as opposed to Mitsubishi Heavy Industries). They are very good if sized and installed correctly.
Older heatpumps run on R22 and compared to the newer R 410a and are junk.
I ( foolishly) when working for York bought Luxaire (Warehouse) units....they are rubbish...anything below 10 degrees and the heat output is pathetic.
Still...they were cheap but you forget the cost when something does not work properly.

Mitsubishi....I have measure 50 degrees plus air off with a frost outside.
Installation: make sure your installer at least has a vacuum pump...if not it voids the warranty.
Pipe work should be pressure tested and vacced to under 500 microns to ensure long compressor life.
Larger units should have a dedicated power circuit.
Only a registred electrician can install new fixed wiring, and supply a Compliance Certificate.

that's a few good points there

Bingo! We got a ventilation kit and the heat pump specced at the same time and the combination has been brilliant.

would you still do the same again, now that you have had it for a while?
would you oversize it slightly now since we seem to have been having some hotter summers?

[James Deuce]

would you still do the same again, now that you have had it for a while?
would you oversize it slightly now since we seem to have been having some hotter summers?

The ventilation kit has Summer and Heat Saving modes so the whole kit and caboodle was designed for both seasonal extremes.

[eldog]

The ventilation kit has Summer and Heat Saving modes so the whole kit and caboodle was designed for both seasonal extremes.

OK

I was thinking about having heat pumps AND HRV/DVS so I could move air about to reduce condensation/mould growth.
as well as

a SEPARATE external duct/fan to remove the excessive heat from the roof during the summer months which ends up soaking the rooms below during the night.

[russd7]

OK

I was thinking about having heat pumps AND HRV/DVS so I could move air about to reduce condensation/mould growth.
as well as

a SEPARATE external duct/fan to remove the excessive heat from the roof during the summer months which ends up soaking the rooms below during the night.

hrv/dvs draw the heat from the ceiling space,all they are is fan and ducting with a filter in line, last place i lived was a big old house that the owner got talked in to installing a HRV system in, it was an utter and complete waste of money and when HRV were told they came to inspect and said this was wrong and that was wrong and they did this and that and still it was no better, so when we put a new logburner in i converted the HRV in to a heat transfer kit and got the sparky in to put speed control on the fans, much different house.

[BMWST?]

OK

I was thinking about having heat pumps AND HRV/DVS so I could move air about to reduce condensation/mould growth.
as well as

a SEPARATE external duct/fan to remove the excessive heat from the roof during the summer months which ends up soaking the rooms below during the night.

a decent ventilation system doesnt need a heat pump to make the whole house a much less damp place.Howver a properly configured ventiltion system can work as an effective heat transfer system.And the idea you have about drawing in cooler air from outside rather than the hot roof space is also part of some ventilation systems.Mosy sytems now will have multiple outlets unlike the earlier systems,If you want to use the heat pump to heat the whole house via the heat pump and transfer you will have to get aheat pump that can do it.There is never something for nothing

[Berries]

Heat pump.

Auckland.

?

[eldog]

Heat pump.

Auckland.

?

its zero degrees here this morning, not that I am complaining.
looks to be a clear sky day - so maybe able to go for a ride this evening after work

[Voltaire]

Frosty outside, toasty inside with the 6KW Mitsi I installed a couple of years ago.

HRV. I used to work for the company that made the filters for them, sounded to me HRV were making good money on the after sales filter

replacements.

We used to fit a heat transfer kit, oversize the main unit by 1-2 kw and this would take the heat to the other rooms.

Worked ok.

You can buy DIY kits, would just need a sparky to do the electrical part.

No doubt they make better systems these days.

[granstar]

Nothing like hacking through a pile of firewood with an axe to keep warm

[Grumph]

Nothing like hacking through a pile of firewood with an axe to keep warm

I was always told firewood warms you three times...Cutting it, stacking it and burning it....

[george formby]

I was always told firewood warms you three times...Cutting it, stacking it and burning it....

I bought the Superior other a proper splitter, she kept falling over backwards trying to use the big axe thing. I get hot cutting the trees and fairly excited watching the missus splitting and stacking them. I've found that the appropriate allocation of domestic chores does wonders for her muscle tone.

When it starts to warm up a little I shall be shopping for a hi viz safety bikini.

[Ocean1]

I was always told firewood warms you three times...Cutting it, stacking it and burning it....

Got that right, there's at least 4 solid weekends of fucking hard yakka in dropping a big gum, slicing it, splitting it and stacking it.

If there's more hours lazing in front of the fire than there was sweating like a pig cutting wood it wouldn't be very fucking many, and if you priced what you saved in power bills you'd probably find you were working for a few cents per hr.

Still, there's some genuine intangible benefits....... oh yeah, you save on gym fees... and the ritual of starting and maintaining a fire soothes the soul. Now that I don't have a monster fire to feed I make do with gas fired under floor heating, sloth and whisky.

[Ocean1]

I bought the Superior other a proper splitter, she kept falling over backwards trying to use the big axe thing. I get hot cutting the trees and fairly excited watching the missus splitting and stacking them. I've found that the appropriate allocation of domestic chores does wonders for her muscle tone.

When it starts to warm up a little I shall be shopping for a hi viz safety bikini.

Good to see the priorities are sorted.

I used to borrow a mate's splitter, a professionally build item that started life as a Toyota Corolla.

It's why he's a mate. Same fundamental attraction to excess in all things.

Edit: remind me to tell you about Charlie's splitter one day...

[Laava]

Good to see the priorities are sorted.

I used to borrow a mate's splitter, a professionally build item that started life as a Toyota Corolla.

It's why he's a mate. Same fundamental attraction to excess in all things.

Edit: remind me to tell you about Charlie's splitter one day...

Is that ole "thumbless charlie"?