Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

1772 posts

Uber Geek
+1 received by user: 116

Topic # 189074 16-Dec-2015 11:01
Send private message

We've got a house we want to install a heatpump in. We originally thought an underfloor ducted system would be best as we want to be able to heat/cool/dry the bedrooms separately from the lounge, however since taking posession i'm not sure we have enough underfloor space (~400mm but in some places less). 

What clearance will we need to use an underfloor ducted heatpump? The alternative is to use an internal ceiling mounted pump, but the house has a skillion ceiling so there is no roof space... I could lower the ceiling in the hallway, but would only have about 300mm between the lowered lining and underside of the existing ceiling. Would this be enough? I think I need about 7kw for the living space (42m2, 2.7-3.2m ceiling) but would also want to heat the bedrooms (~9m2 each).

Am I dreaming, trying to fit a heatpump in somewhere other than on the walls? 

Create new topic
13462 posts

Uber Geek
+1 received by user: 2284


  Reply # 1451429 16-Dec-2015 11:28
Send private message

You should probably ask an installer. 40cm is pretty tight to get into, and some places won't go under houses. Lowering the ceiling sounds like a pain in the butt.

My very old but reasonably well insulated house has a Nocria heat pump heating the living area, and the areas with bedrooms, maybe 60 - 70 square meters. It works well, even going around two corners into one bedroom. I have a 10kw heat pump, it's much more effective than the older 7kw heat pump that I moved to another part of the house. If your house is modern you may get away with 7kw. Ducted I would be wanting more like 10 - 15kw.

AWS Certified Solution Architect Professional, Sysop Administrator Associate, and Developer Associate
TOGAF certified enterprise architect
Professional photographer

Hmm, what to write...
962 posts

Ultimate Geek
+1 received by user: 479

Lifetime subscriber

  Reply # 1451431 16-Dec-2015 11:31
Send private message

It could be done with that space. However you might need to do a bit of digging around the indoor unit so that everything will fit. Obviously access to get the unit and plenums needs to be considered too. Don't forget you are going to need to get under house for other things later on as well.

So in all likelihood Possible but not easy/cheap



137 posts

Master Geek
+1 received by user: 19

  Reply # 1451607 16-Dec-2015 14:27
Send private message

A 10kw -12.5 kW ducted unit is somewhere around 330 - 360mm deep so doesn't leave much room. The flexible ducting will be smaller than this, say 300mm and gets smaller as you get further from the unit.
I'd recommend you get an installer to have a look and give you a quote as every house/situation is different.

1772 posts

Uber Geek
+1 received by user: 116

  Reply # 1451701 16-Dec-2015 16:15
Send private message

Cheers all. 

Yeah will get an installer to have a look at it in the new year, but was interested to know whether I am going to need to spend a month convincing swmbo that one option is better than another (cost and feasibility-wise).

The house needs a lot of work so dropping ceilings isn't an issue (i'm going to be putting new ceiling linings on every ceiling anyway so I can get some insulation between existing and new). 

We'll just wait and see I guess. 

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

New Zealand's IT industry in 2018 and beyond
Posted 22-Jan-2018 12:50

Introducing your new workplace headache: Gen Z
Posted 22-Jan-2018 12:45

Jucy set to introduce electric campervan fleet
Posted 22-Jan-2018 12:41

Hawaiki cable system will be ready for service in June 2018
Posted 22-Jan-2018 12:32

New Zealand hits peak broadband data
Posted 18-Jan-2018 12:21

Amazon Echo devices coming to New Zealand early February 2018
Posted 18-Jan-2018 10:53

$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27

Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02

Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15

Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37

Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59

Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42

New Chief Technology Officer role created
Posted 19-Dec-2017 22:18

All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54

How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.