IMPORTANT! This is MoneySavingExpert's open forum - anyone can post

Please exercise caution & report any spam, illegal, offensive, racist, libellous post to forumteam@moneysavingexpert.com

  • Be nice to all MoneySavers
  • All the best tips go in the MoneySavingExpert weekly email

    Plus all the new guides, deals & loopholes

  • No spam/referral links
or Login with Facebook
Positive Input Ventilation System
Reply
Views: 25,846
Thread Tools Search this Thread Display Modes
# 1
Vincenzo
Old 06-07-2007, 3:22 PM
MoneySaving Stalwart
 
Join Date: May 2006
Posts: 507
Default Positive Input Ventilation System

Hi everyone,

I have recently let a flat out and the tenants have been complaining of damp. To cut a long story short, it is condensation and while I have helped the tenants to manage it correctly (who have been keen to help solve the problem) I need to find a permanent solution that does not rely on having sensible tenants!

In anticipation of other suggestions, the property is as follows:
- ground floor maisonette (detached house)
- 9" brick solid walls (no cavity)
- concrete floors and ceilings (quite a cold flat even with the heating on full blast)
- new double glaxed windows with trickle vents

During my research I came across the Nuaire Flatmaster 2000 and various other Positive input Ventilation Systems.

Does anyone have experience of these. They sound great but do they actually work??? At the best part of a grand to install I really don't want to go to all the trouble to find they are all hype and no help!
Vincenzo is offline
Reply With Quote Report Post
# 2
economiser
Old 06-07-2007, 11:13 PM
Serious MoneySaving Fan
 
Join Date: Nov 2004
Location: West Essex
Posts: 892
Default

The important thing with any forced fan system is that the air can get out as well as in. There web site shows the air flowing throughout the flat (note that doors would need to be open to achieve this and you either need air bricks (or leaky windows) to let the air out. Notice also that the supply must not be directly into the bathroom or kitchen as it would spread vapour and smells throughout the house.

There is also no guarantee that the air will ventilate all rooms as shown. It will take the path of least resistance and may be affected by wind pressures.

Which areas of the flat are experiencing the problem? With bathroom and kitchen local extract fans might be more effective and a lot cheaper. Bedrooms are more difficult as fans are too noisy normally and some sort of permanent vent might be a solution.

Last edited by economiser; 06-07-2007 at 11:14 PM. Reason: clarity
economiser is offline
Reply With Quote Report Post
# 3
Doozergirl
Old 06-07-2007, 11:39 PM
Deliciously Dedicated Diehard MoneySaving Devotee
 
Join Date: May 2005
Location: Midlands
Posts: 18,389
Default

Is it possible to reinstall a fireplace, if there was one?

We had people recommend a system and then a taxi driver told me to just reinstall the fireplace. We did as it was something we'd have liked to have done anyway and the condensation problem just disappeared!
Everything that is supposed to be in heaven is already here on earth.
Doozergirl is offline
Reply With Quote Report Post
# 4
greyteam1959
Old 07-07-2007, 12:28 PM
Fantastically Fervent MoneySaving Super Fan
 
Join Date: Jan 2007
Posts: 2,231
Default

Quote:
Originally Posted by Vincenzo View Post
Hi everyone,

I have recently let a flat out and the tenants have been complaining of damp. To cut a long story short, it is condensation and while I have helped the tenants to manage it correctly (who have been keen to help solve the problem) I need to find a permanent solution that does not rely on having sensible tenants!

In anticipation of other suggestions, the property is as follows:
- ground floor maisonette (detached house)
- 9" brick solid walls (no cavity)
- concrete floors and ceilings (quite a cold flat even with the heating on full blast)
- new double glaxed windows with trickle vents

During my research I came across the Nuaire Flatmaster 2000 and various other Positive input Ventilation Systems.

Does anyone have experience of these. They sound great but do they actually work??? At the best part of a grand to install I really don't want to go to all the trouble to find they are all hype and no help!
I have installed one of these in my house and one in a friends house.
http://www.nuaireforhomes.co.uk/drimaster2000.shtml
This is the version you use if you have a loft space.
Mine has been installed for over 10 years now and is absolutely brilliant.
No mildew / no running condensation on windows etc etc
My problems started when we installed upvc double glazing in the 1910 detached house.... sealed up all the draughts but also sealed in all the moisture and started to get problems with mildew on walls and in wardrobes.
They seem to be expensive but I can assure you that they do work and in my case work very very well.
If you want to know anything else just post...............
greyteam1959 is offline
Reply With Quote Report Post
The Following 2 Users Say Thank You to greyteam1959 For This Useful Post: Show me >>
# 5
Vincenzo
Old 09-07-2007, 9:13 AM
MoneySaving Stalwart
 
Join Date: May 2006
Posts: 507
Default

Mervyn11,

I would have to install the Flatmaster but I presume they are fairly similar. Am I correct in thinking there is one inlet for the whole house? Does this mean that it only works well if all the doors are left open? Also does it make any noise or cause drafts?

Cheers.
Vincenzo is offline
Reply With Quote Report Post
# 6
greyteam1959
Old 15-07-2007, 3:34 PM
Fantastically Fervent MoneySaving Super Fan
 
Join Date: Jan 2007
Posts: 2,231
Default

Yes only one inlet for the whole house.
Doesnt really matter if the doors are open or shut cos a door is never really sealed that tight.
They do make a slight noise but you soon get used to it and a slight draught can be felt if you stand ( under it in my case) near it.
The slight drawbacks are far outweighed by the massive improvement in the problems associated with lack of ventilation.
greyteam1959 is offline
Reply With Quote Report Post
The Following User Says Thank You to greyteam1959 For This Useful Post: Show me >>
# 7
dubainikolai
Old 24-07-2007, 1:44 PM
MoneySaving Newbie
 
Join Date: Jul 2007
Posts: 1
Default

Hello there

I was wondering if anybody knew of the merits of a Heat Recovery Ventilation system as an alternative to the Positive Input Ventilation System in terms of combatting condensation in flats?. I know that the HRV systems are usually used in houses, with the inflow at ground level, but I guess flatmaster type unit could be used in houses as well flats?
dubainikolai is offline
Reply With Quote Report Post
# 8
onlyoneme
Old 05-11-2007, 4:01 PM
MoneySaving Stalwart
 
Join Date: May 2006
Posts: 290
Default

Hi
Does anyone know howmuch it cost to install one of these (Flatmaster), including the actual equipment.

Thanks
onlyoneme is offline
Reply With Quote Report Post
# 9
tactical observer
Old 16-12-2009, 5:34 PM
MoneySaving Newbie
 
Join Date: Dec 2009
Posts: 1
Default

Quote:
Originally Posted by mervyn11 View Post
Yes only one inlet for the whole house.
Doesnt really matter if the doors are open or shut cos a door is never really sealed that tight.
They do make a slight noise but you soon get used to it and a slight draught can be felt if you stand ( under it in my case) near it.
The slight drawbacks are far outweighed by the massive improvement in the problems associated with lack of ventilation.
Hi there - shot in the dark I know but I wonder if you are still around !
im looking into these kind of systems for my late 19the century house, do you still have a good opinion of them - did you have any kind of surveys done before you had it fitted?
Any other information would be great.
tactical observer is offline
Reply With Quote Report Post
# 10
sparky101
Old 28-03-2011, 11:44 PM
MoneySaving Newbie
 
Join Date: Mar 2011
Posts: 1
Send a message via Yahoo to sparky101
Post Condensation, Damp and Mould.

Hi,

A friend of mine recently bought an old barn conversion that was done about a year ago. Since moving in he has had problems with condensation, damp and mould. I/we have looked in to what we can do, done a bit of research on the internet and spoken to a few different ventilation companies, both have suggested heat recovery units and/or positive air input units to combat the problem. If you do a google search for positive input units it brings up various ventilation companies and some of them will do a free survey and recommend one of there products to use which we have yet to do. Once we have done this I will report back with what they say, but if anyone could give us anymore information regarding this matter we would be grateful.
Cost wise, your looking at anything from 100 to 300 plus installation for a heat recovery unit maybe more, and anything from around 200 to 800 or more plus installation for a positive air input unit, all depending on the size of your property and so on.
I myself am an electrician in Bristol and will be looking in to all this a bit more. If anyone requires or can give me anymore info please contact me on here or at reachsparky@yahoo.co.uk
sparky101 is offline
Reply With Quote Report Post
# 11
tunster
Old 23-01-2012, 4:05 PM
MoneySaving Newbie
 
Join Date: Nov 2006
Posts: 6
Default

Hi sparky101 have you anymore info on the piv system? I just got a quote locally for 6k?? Seems way too much for my budget.If i can buy a unit somewhere i will install it myself. Can anyone tell me where to buy and how much i should pay.
tunster is offline
Reply With Quote Report Post
# 12
muckybutt
Old 23-01-2012, 7:50 PM
Fantastically Fervent MoneySaving Super Fan
 
Join Date: Sep 2009
Posts: 3,394
Default

Quote:
Originally Posted by tunster View Post
Hi sparky101 have you anymore info on the piv system? I just got a quote locally for 6k?? Seems way too much for my budget.If i can buy a unit somewhere i will install it myself. Can anyone tell me where to buy and how much i should pay.
Why comment on a thread from last year never mind 2007 ???

Would have been easier to start a new thread as it avoids confusion as is more upto date.

Anyhow all you need to do is google whole house ventilation, there are many systems available and even the heat recovery ones are less than the 6k you have been quoted.
You can click the Thanks button if you want
muckybutt is offline
Reply With Quote Report Post
# 13
tunster
Old 23-01-2012, 9:34 PM
MoneySaving Newbie
 
Join Date: Nov 2006
Posts: 6
Default

[QUOTE=muckybutt;50458309]Why comment on a thread from last year never mind 2007 ???

Commented on the thread cos i need one now! Does it matter when the thread was posted? Last week,last year- 2007!
All i want is a decent price for a system.
tunster is offline
Reply With Quote Report Post
# 14
ogcabrera
Old 06-02-2012, 3:09 PM
MoneySaving Newbie
 
Join Date: Sep 2006
Posts: 2
Default

Hi tunster,

I think 6k is way too much. I am about to install one of these and it shouldn't cost more than few hundred pounds + fitting.

Google preservationsupplies and have a look at the condensation control units.

I hope it helps.
ogcabrera is offline
Reply With Quote Report Post
# 15
castanley
Old 16-10-2012, 6:03 PM
MoneySaving Newbie
 
Join Date: Mar 2006
Posts: 5
Default Nuaire PIV system

I have had a Nuaire loft mounted PIV for several years. It does work - the condensation has gone away. However my family constantly moan about the cold air being pumped in from the loft. In the winter it is very cold.
castanley is offline
Reply With Quote Report Post
# 16
mundania62
Old 21-11-2012, 11:59 AM
MoneySaving Newbie
 
Join Date: Nov 2012
Posts: 1
Default

For those considering this method of ventilation, here is a report by the Building Research Establishment. Seems positive. As a new user I am not allowed to post links so if you want to read it, cut and paste it to your browser.

projects.bre.co.uk/positivevent/index.html

From personal experience, and picking up on a post by another member;-
I live in a 1930's art deco apartment block. Some flats have condensation problems and others do not. The ones which do have the problems invariably have blocked up the fire places in their living rooms.
mundania62 is offline
Reply With Quote Report Post
Reply

Bookmarks
 
 




Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 Forum Jump  

Contact Us - MoneySavingExpert.com - Archive - Privacy Statement - Top

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

All times are GMT +1. The time now is 1:29 PM.

 Forum Jump  

Free MoneySaving Email

Top deals: Week of 27 August 2014

Get all this & more in MoneySavingExpert's weekly email full of guides, vouchers and Deals

GET THIS FREE WEEKLY EMAIL Full of deals, guides & it's spam free

Latest News & Blogs

Martin's Twitter Feed

profile

Cheap Travel Money

Find the best online rate for holiday cash with MSE's TravelMoneyMax.

Find the best online rate for your holiday cash with MoneySavingExpert's TravelMoneyMax.

TuneChecker Top Albums

  • VARIOUS ARTISTSNOW THAT'S WHAT I CALL MUSIC! 88
  • ED SHEERANX (DELUXE EDITION)
  • KATE BUSHTHE WHOLE STORY

MSE's Twitter Feed

profile
Always remember anyone can post on the MSE forums, so it can be very different from our opinion.
We use Skimlinks and other affiliated links in some of our boards, for some of our users.