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| Thread ID: 143041 | 2016-11-05 07:50:00 | Home Ventilation - HRV vs DVS | bk T (215) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1428392 | 2016-11-06 07:14:00 | roof space makes no difference. its pulling in outside air just like opening a window. its not a case of "open a couple of windows at each end of the house for 10 mins a day and achieve the same thing". you would need to open every window and door wide open. do that when you get home after work and all the heat in the house goes out with the air. cheapest is leave some windows open all day. not great for security or if its rains etc. a ventilation is a way to do that without those hassles and have a small amount of ventilation constantly. i t hink there is one around thats programmable. it would be good to actually ventilate during the night or early morning. use that cold but dry air, and let the house heat up in the sun while your away at work. Roof space - that's where they install them, no roof space, nowhere to install. Also the whole point is to use the warm air trapped in the ceiling to warm the incoming fresh air with a heat exchanger. It is a case of open a couple of windows for 10 mins, get a humidity meter and try it yourself. My record is a 12% drop in 10 mins. With a window open in the lounge and one in the kitchen - and the meter in a side room across the hall. If you haven't tried it you're just assuming you know better, but it likely depends on the way your house is designed as well, one side of mine is basically a large rectangle and it works perfectly. I don't know about you but I don't heat my house while I'm at work and it's empty so there's not much heat to lose, and the drop in humidity makes it easier to heat back up anyway. That said you would be lucky to lose 2-3 degrees in 10 mins - again try it yourself. I'm not saying there's no point to dehumdifiers and DVS systems but you should at least try opening a window for 10 mins each day first, it costs nothing and you lose nothing if It doesn't work. In modern joinery they now build in vents, seems wrong to me when I'm trying to heat but apparently it's better overall. I use the second latch on my window to achieve the same thing when the weather is warm enough. |
dugimodo (138) | ||
| 1428393 | 2016-11-06 07:54:00 | "As people became less naive and more questioning, their advertising hype has dropped this idea" More like, got taken in and bought the crappy product only to realize they had been scammed. |
zqwerty (97) | ||
| 1428394 | 2016-11-06 08:26:00 | We had a DVS in the hallway, all it did was blow cold air throughout the house, but there was never any condensation on the windows. ...............snip.................snip lurking. Exactly, that is how the systems work. Inside temperature equals window temperature equals outside temperature(more or less)............ergo: no condensation. Works well if you don't mind being cold. It's just physics, dew point and all that. |
Terry Porritt (14) | ||
| 1428395 | 2016-11-06 08:48:00 | To sum it up, it's going to be hotter in summer and colder in winter = no condensation = higher power bills (both heating and cooling). | bk T (215) | ||
| 1428396 | 2016-11-06 17:38:00 | yes/no a bit. there is a wide range of filters available. the black ring around the vents is caused by static generated by the air flow passing the lip of the vent, causing dust to stick to the ceiling. I don't care....it aggravated their allergies.... I had to clean the ceilings. You know, as modern houses came about, and people started to seal them up like plastic bags, condensation became a thing. never had any in old villas. |
pctek (84) | ||
| 1428397 | 2016-11-06 19:05:00 | I'm in an old villa and we had problems with condensation on the windows in cold mornings. Double glazing and heat transfer system has reduced the problem but not eliminated it. | user (1404) | ||
| 1428398 | 2016-11-06 19:29:00 | Getting rid of the portable gas heater, solved all our problems :) | Zippity (58) | ||
| 1428399 | 2016-11-06 20:53:00 | I haven't yet tried the drying mode on our Fujitsu heat pump, the manual doesn't explain how it works, or whether both dehumidifying and heating can be set, but it would be interesting to see if it affects condensation. To clear a windscreen quickly, shut off outside air, turn on AC. If it's gets too cold turn on heating, to give warm dry air in the car, same principle for a house, but it takes energy, can't escape that. Better to spend money on insulating outside south facing walls |
Terry Porritt (14) | ||
| 1428400 | 2016-11-06 20:56:00 | I've not used any of them but have heard very good things about SmartVent. | wratterus (105) | ||
| 1428401 | 2016-11-07 02:18:00 | Getting rid of the portable gas heater, solved all our problems :) Portable 9kg gas heaters put out 1 litre of water, per kg of lpg burnt. ! |
BobM (1138) | ||
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