Help me choose a heat pump

**Drew** · 23rd July 2016, 23:14

Originally Posted by eldog

The HRV man was looking at approx $4000 with out a heat pump for a normal HRV install.

Ventilation is good. I think they're all over priced (and we install them), but they maintain positive pressure to reduce moisture.

**BMWST?** · 24th July 2016, 00:37

Originally Posted by Drew

Ventilation is good. I think they're all over priced (and we install them), but they maintain positive pressure to reduce moisture.

he doesnt want to use the roof space air too many dead rats up there

**sidecar bob** · 24th July 2016, 08:45

Originally Posted by haydes55

Get a wood fire and heat transfer kit. Less than half the cost and quieter.

Not if you include the noise of the chainsaw & axe.
I'm past wasting my weekend doing manual labour. One small beep from the unit & ten minutes later, toasty.

**Drew** · 24th July 2016, 10:09

Originally Posted by BMWST?

he doesnt want to use the roof space air too many dead rats up there

You can use outside air.

**eldog** · 24th July 2016, 10:32

Originally Posted by Drew

You can use outside air.

BOC AKL have it on special this week

wont be long before AKL council figure a way to tax it either

**Drew** · 24th July 2016, 10:40

Originally Posted by eldog

BOC AKL have it on special this week

wont be long before AKL council figure a way to tax it either

BOC wellington better not start selling that Aukland air down here though.

**eldog** · 24th July 2016, 12:41

Originally Posted by BMWST?

he doesnt want to use the roof space air too many dead rats up there

Just one I think, this time, it's under the insulation (usually on top) in a roof space approx 300 high, I can smell it but it's nearly gone by the amount of smell.
its one of 2 that's been hard to get crafty buggers.
got the other one a month or 2 ago, saw it running around outside during daylight (I have seen it inside the house too) it was desparate to get in.

replacing the spouting and putting an ally mesh to stop leaves and rodents getting in

got the drainage man coming this week I hope to look at what he can do.

so it's quite busy, got to figure out who first.

20 more blowies today

**Ocean1** · 24th July 2016, 13:33

Originally Posted by eldog

The HRV man was looking at approx $4000 with out a heat pump for a normal HRV install.

Which, for a fan, half a dozen vents, a few meters of ducting and 3 or 4 hrs work is just fucking ridiculous.

$400 is probably more what it should be.

**Ocean1** · 24th July 2016, 13:40

Originally Posted by sidecar bob

Not if you include the noise of the chainsaw & axe.
I'm past wasting my weekend doing manual labour. One small beep from the unit & ten minutes later, toasty.

Yeah that's for sure. I reckon the amount of time you spend sweating your ring out dropping a decent sized gum, chopping it up, splitting it, stacking it and fetching it in to burn is roughly the same as the time it spends making you warm.

So why not just exercise through winter instead?

There is something about a nice fire though, other than the fact that they're probably at least as interesting to watch than the shite on TV...

**sidecar bob** · 24th July 2016, 13:57

Originally Posted by Ocean1

Which, for a fan, half a dozen vents, a few meters of ducting and 3 or 4 hrs work is just fucking ridiculous.

$400 is probably more what it should be.

When they phone us soliciting for work, I say, "yes we already have one, we call ours a window"

**Drew** · 24th July 2016, 14:00

Originally Posted by Ocean1

Which, for a fan, half a dozen vents, a few meters of ducting and 3 or 4 hrs work is just fucking ridiculous.

$400 is probably more what it should be.

The components are fucken expensive to buy, for what they are. What we pay for 'Smartvent' systems is fucken unbelievable.

**Drew** · 24th July 2016, 14:01

Originally Posted by sidecar bob

When they phone us soliciting for work, I say, "yes we already have one, we call ours a window"

Your place wouldn't be a likely candidate for an efficient system anyway.

**george formby** · 24th July 2016, 15:06

Not wanting to hijack the thread.... but, fuck it, I will ask anyway.
We have been using a portable de-humidifier in the cottage lately and it does a better job of warming the house than the fire. Sooo, I'm thinking of looking into a dedicated system when we do our refurb.
Stick the unit under the house with ducting and vents at floor level in the rooms, transfer the warm air back into the house. Is this a sane idea with a wood fire for heat in a house which it is impossible to completely draft and damp proof? The cottage is 140 years old and not exactly straight or level.

**Drew** · 24th July 2016, 15:42

Originally Posted by george formby

Not wanting to hijack the thread.... but, fuck it, I will ask anyway.
We have been using a portable de-humidifier in the cottage lately and it does a better job of warming the house than the fire. Sooo, I'm thinking of looking into a dedicated system when we do our refurb.
Stick the unit under the house with ducting and vents at floor level in the rooms, transfer the warm air back into the house. Is this a sane idea with a wood fire for heat in a house which it is impossible to completely draft and damp proof? The cottage is 140 years old and not exactly straight or level.

You would need to duct the air into a dehumidifier from inside the house, then back in. If you're gonna go to that level, a normal ventilation system will have the desired effect of drying the house out.

Still worth it even without the best sealed house.