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| Thread ID: 146378 | 2018-07-17 03:28:00 | Heat Pump | bruciebear (1478) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1451658 | 2018-07-20 01:36:00 | Heatpumps go great in the ceiling space - then you can run ducts to wherever you like in the house and only a small outlet vent is seen. (and no noise) 8953 AAAHH !! failed to rotate the picture - just tilt your heads to the left, guys. but installation and repair is a lot more complicated. very very easy to loose its benefits by not doing the ducting perfectly. the good side of it is whole house heating, which is something most kiwis never do. |
tweak'e (69) | ||
| 1451659 | 2018-07-20 21:03:00 | so what was the problem with the DVS ? Accomplished nothing at all other than throwing filth all over the ceiling. What was it supposed to do? I guess if you seal your house up like a plastic bag, maybe there is some benefit but nah...and it uses power....annoyingly it couldn't be turned off, we accused each other for a while of turning it back on, until we discovered it turns it self back on. So we disconnected it. Now actual heat transfer systems, that I do like and I would do that in a larger house, say like my brothers... |
piroska (17583) | ||
| 1451660 | 2018-07-21 00:29:00 | In theory a DVS takes the supposed hot air out of the ceiling space and brings it through a vent in the ceiling into the house space proper. Mum and Dad got sick of cleaning their large French windows and others every cold morning and the DVS people assured them that their system was the answer. However they were wrong because we had a cement tiled roof which was like a colander and may as well just have been the outside cold air as far as the DVS system was concerned. So all it did was bring in freezing cold damp air from the roof space together with all the fumes and dust and smoke from other peoples' wood fires and dirty up the ceiling and walls around the vent. The DVS crew were called in and put in a filter which helped a bit but the DVS still made the house colder and hardly alleviated the condensation on the windows at all. You have to put in a new filter each year which they do post to you and cost around $65 if I remember correctly. The whole system cost Mum and Dad about $2000 I believe and that would be when it first came out about 25 years ago I think. Definitely a very amateur attempt to make a viable product. |
zqwerty (97) | ||
| 1451661 | 2018-07-21 05:00:00 | We had a DVS system in an old wooden house we owned and it was very successful. We didn't have any mess because of the filter on the inlet. (should be standard) It pumped in warm air because of the black decramastic roof tiles. It used negligible power as it was only a low speed fan spinning over. Our neighbour asked why we never had condensation on our windows when she did - told her and she got one too. Problem solved. Obviously it is a case of "horses for courses" |
decibel (11645) | ||
| 1451662 | 2018-07-21 06:40:00 | How well did it go when there was frost on the roof? | Driftwood (5551) | ||
| 1451663 | 2018-07-21 07:08:00 | sounds like there is a ton of miss information about these systems (regardless of brand). they do not heat the house by the heat in the ceiling. they are not a heating system, they are ventilation systems. so in fact they make the house colder which is not always a bad thing. the big problem is that they are often miss used. if you have a house with plenty of ventilation then no point putting one in. its not going to do anything except make the place colder. also some house's they do not work well or require a different approach. they are for houses that have moisture issues, or homes that don't have enough ventilation eg cannot have windows open during the day. but they can provide to much ventilation. they need to be tuned to suit a the house and programmed to turn off when it gets to cold or ceiling gets to hot. old homes are really air leaky, they have tons of ventilation wither you like it or not. its completely uncontrolled. makes for a dry but cold home. new homes are much more air tight, which is great for insulation. ventilation and insulation are opposites. having air leak out of a house is really bad for keeping heat in. but you need a certain amount of ventilation to vent moisture from the people living in it. with a good ventilation system you can control that so its dry enough but still warm enough. you see this with new homes that have double glazing but have huge condensation on them. thats due to having no ventilation. houses like 70's-80's are sort of air leaky. some will have tons of ventilation, others may not. they can be a real mixed bag. the dirt around the vent is due to static from the air coming out the vent, causing dirt in the room to cling to the ceiling. all vent systems should have filters on it stopping dust etc coming into the house. for well sealed house you need a balanced air system. this also have a heat exchanger built in so the outgoing air heats the incoming air. this reduces the amount of heat lost to ventilation. |
tweak'e (69) | ||
| 1451664 | 2018-07-21 21:27:00 | In short, a DVS (or any other brand) ventilation system 'warms' the house in summer and and 'cools' the house in winter. Shouldn't it be the reverse? Condensation is a tough job, other than a good Dehumidifier which is quite expensive to operate and noisy, too. |
bk T (215) | ||
| 1451665 | 2018-07-21 22:03:00 | Heat pumps can be programmed to act as a dehumidifier if needed. | Bryan (147) | ||
| 1451666 | 2018-07-21 22:12:00 | Our neighbour asked why we never had condensation on our windows when she did - told her and she got one too. " Down South we had an old weatherboard house, floorboards, leaky windows etc as they are. Not a drop of condensation. No DVS. Neighbour, same kind of house , no DVS had loads of it. But their place had been modified, it had aluminium windows. So we move here, aluminum windows and doors, the whole insulated, carpet on floors business. So what do I do? The kitchen and bathroom windows are open 365 days a year, albeit not fully in winter. Works well, minimal condensation, in fact none unless cooking, then you get a wee bit. |
piroska (17583) | ||
| 1451667 | 2018-07-21 22:26:00 | NZ Consumer.org.nz is your best friend. Read their overview here: www.consumer.org.nz/products/heat-pumps/overview |
Zippity (58) | ||
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