Help me choose a heat pump

[eldog]

Is there no room in the crawl space? Otherwise a ducted unit sounds ideal.

It's a roof with 2 angles 30 degree to the top and 12.5 degree from the outer wall for about 1200 from memory.

There is about 100-150mm at the outer wall and quite a bit of space at the middle - easy enough room to stand up in.

Going up in the roof tomorrow to see what's died there recently - plenty of blowies appearing (150 so far)

[Drew]

I will find out, if he is installing it or not.

I doubt Drew is willing to travel to AKL for an install

It wouldn't be the first time.

A ducted unit is a couple days to install for one or two guys a lot of times.

If there's room to move around in the attic, you can normally get a ducted unit to suit. Really sounds like it could be a good option.

Smaller outfits don't often sell them. They can be a mongrel of a job. Clamoring around amongst pink Batts and hating your life. Sweating like a gypsy with a mortgage. Shit work. So those of us doing it charge accordingly...except Choppa. The mofo won't charge market rates no matter how much I bitch about not wanting to work so hard.


From the money you are talking, it could well be a cheaper option though.

[Drew]

It's a roof with 2 angles 30 degree to the top and 12.5 degree from the outer wall for about 1200 from memory.

There is about 100-150mm at the outer wall and quite a bit of space at the middle - easy enough room to stand up in.

Going up in the roof tomorrow to see what's died there recently - plenty of blowies appearing (150 so far)

Dude. Go ducted! Electronic damper Controller in any rooms you want to be able to turn off that aren't always used, fresh air intake on another controller if ya want it. Climate control the whole shimozzle!

230 squares is a fucken big house for three bedrooms isn't it?

[haydes55]

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

[Drew]

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

Dunno about the cost. That shit aint cheap to have retrofitted. Properly specced andinstalled, a ducted should be near silent from inside the house.

[eldog]

Ducted I will look into it.

trying to keep an open mind about what system to put in.

it sounds big. But isn't really, it includes a double garage with enough room to swing a cat.

it was designed by an architect who lived here, has a few more modern features than would have been expected, and a few more which are a PITA

you don't want to be in the roof midday in summer. Good way to loose weight though.

reason for no ducted-probably because I didn't suggest it in the first place.
they both seemed keen to supply indoor and outdoor units
they asked me what I wanted and I said I didn't really know could they suggest something, but I wanted to be able to separately heat/cool each area of the house with adding air from outside (can get stuffy in a closed bedroom)

a mate of mine has a ducted system but he was doing a full Reno including digging under his house and creating a whole living floor under his, he did the ducted system as part of the build

[Drew]

Ducted I will look into it.

trying to keep an open mind about what system to put in.

it sounds big. But isn't really, it includes a double garage with enough room to swing a cat.

it was designed by an architect who lived here, has a few more modern features than would have been expected, and a few more which are a PITA

you don't want to be in the roof midday in summer. Good way to loose weight though.

Ah. So less than 200m2 to be heated/cooled. No trouble getting a unit capable of that unless every wall is glass and there's no insulation.

There are gas central heating systems that seem popular at the moment. Not my thing so dunno how they work, but could also be something to look into. No cooling though.

You shouldn't have to be making the suggestion. It's supposed to be them giving options.

Is this normal? Are outfits just quoting what people ask about and fucking off? Doesn't sound like they're doing themselves any favors.

[eldog]

Ah. So less than 200m2 to be heated/cooled. No trouble getting a unit capable of that unless every wall is glass and there's no insulation.

There are gas central heating systems that seem popular at the moment. Not my thing so dunno how they work, but could also be something to look into. No cooling though.

Tomorrow I will work out the exact sizes, I am building up a acad dwg of the house so I can label the electrical points etc Currently it has 50% fuses and 50% circuit breakers all unlabelled. LOL

Keeping away from gas as I expect it to rise in cost as the fields slow down. There plenty of power-in the Sth Is we can use

Insulation in roof space is going to be increased to the joist height and then a blanket over to the outside of the house and ALSO the garage will be insulated.
Changing lights so I can cover them with insulation as well

[haydes55]

Dunno about the cost. That shit aint cheap to have retrofitted. Properly specced andinstalled, a ducted should be near silent from inside the house.

Top of the range fire that can heat that area about $3500. bits and bobs needed for install, installation and permit, around $6000. Average heat transfer unit installed about $1500.

Firenzo fires can have an outside air intake for the combustion air.

If you want fresh air, a top of the range HRV, with heat transfer and summer kit will use less power than a air con system and cost around $9000 for your size house.

Best wood fire you can buy and best ventilation system you can buy, still only $15,000. Or $7500 for a simpler heat transfer system with the fire.

[Drew]

Oh yeah. With a ducted you can't cool one area and heat another. So that's prolly the crux of it right there. My bad.

[haydes55]

Oh yeah. With a ducted you can't cool one area and heat another. So that's prolly the crux of it right there. My bad.

99% of the time you should never need to. Could a ducted system heat one room and just dehumidify another?

I know with multi indoor units off 2 out door units you can.

[eldog]

You shouldn't have to be making the suggestion. It's supposed to be them giving options.

Is this normal? Are outfits just quoting what people ask about and fucking off? Doesn't sound like they're doing themselves any favors.

I know I shouldn't have made a suggestion, I suppose they were wanting to know if I wanted cheap arse and expected the rolls Royce item.

I didn't want just heat and cool, I knew from the insulation guy who saw me earlier to be aware about air flow once the light fitting where covered.

I think people are very busy at the moment so they are getting so many enquiries that they quoting what they feel is correct, at least this guy is coming back and asking questions.

maybe I should get your man to quote it for a fee just to keep them honest.

[eldog]

Oh yeah. With a ducted you can't cool one area and heat another. So that's prolly the crux of it right there. My bad.

Having lived in this house for a while, there aren't many times of the year that would require heating and cooling at the same time.

a few years back mostly heating, lately mostly cooling on a few weeks of the year.

it has a Jetfire fireplace which draws air from the room to fuel it. It ducts air under it and over the top to heat the air in the room as well as radiant heat.

looks nice when working but doesn't heat all that much. Read about others fires on other threads on KB, externally supplied air to fire seems best, otherwise using some of the heated air to be burnt and go up through the chimney.

[eldog]

Top of the range fire that can heat that area about $3500. bits and bobs needed for install, installation and permit, around $6000. Average heat transfer unit installed about $1500.

Firenzo fires can have an outside air intake for the combustion air.

If you want fresh air, a top of the range HRV, with heat transfer and summer kit will use less power than a air con system and cost around $9000 for your size house.

Best wood fire you can buy and best ventilation system you can buy, still only $15,000. Or $7500 for a simpler heat transfer system with the fire.

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

[Drew]

99% of the time you should never need to. Could a ducted system heat one room and just dehumidify another? I know with multi indoor units off 2 out door units you can.

No. But when your keeping positive pressure you shouldn't need to run a dehumidifier. The moisture is being pushed out rather than absorbed.