DVS...HRV....Smartvent....Air Systems...
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Category: General Chat
Forum Name: General Chat
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URL: https://www.ohbaby.co.nz/forum/forum_posts.asp?TID=18605
Printed Date: 23 July 2025 at 8:43am
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Topic: DVS...HRV....Smartvent....Air Systems...
Posted By: Kelpa
Subject: DVS...HRV....Smartvent....Air Systems...
Date Posted: 26 June 2008 at 12:56pm
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Does anyone have one of these.......or looking at getting one? I am sort of umming and ahhing but interested in any thoughts people have? -------------  
 
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Replies:
Posted By: mandz
Date Posted: 26 June 2008 at 1:24pm
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I would be interested in costs etc too - cause our power bill was $350 last month - first month since Oliver came into our lives!
Cheers Amanda ------------- http://lilypie.com"> 
Zack Robert Henton - 29th December 2009 |
Posted By: Bizzy
Date Posted: 26 June 2008 at 1:35pm
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my sister has an HRV but doesnt think much of it - she did say tho it is probably her house not the product. ------------- http://www.myfitnesspal.com/weight-loss-ticker"> 
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Posted By: james
Date Posted: 26 June 2008 at 1:39pm
we have hrv dont get one they are crap my best riends mum has a dikin heat pump and its great
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Posted By: sadie
Date Posted: 26 June 2008 at 1:41pm
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Hiya,
We had HRV put in before last winter and I think it's been great. Since then we've had no condensation, and as the air in the house is much drier, it makes it a lot more efficient to heat. We have a 3 bed bungalow, and got the basic system with 4 vents. From memory, I think it was around $2,400 or something. Definitely worth it (IMO), especially as it is always listed as a selling point in property listings. Hope that helps x |
Posted By: tishy
Date Posted: 26 June 2008 at 2:28pm
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We have HRV. We find it's great for the condensation and also we no longer have a stuffy bedroom with 2 adults and 2 babies sleeping in there.
I no longer feel the need to open windows during the day either as the house is getting ventilated. However having recently gotten a smartvent pamphlet in the letterbox we would have gone for that one with the additional 'Heat Transfer' Kit which would take the heat out of our warm sitting room and transferred it around the rest of the house. |
Posted By: Daizy
Date Posted: 26 June 2008 at 2:45pm
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We need an HRV as we have major condensation problems. Or some sort of System that does the same thing.
A lot of them work for us as we have no ceiling space. ------------- 
 
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Posted By: IVFGirl1111
Date Posted: 26 June 2008 at 2:46pm
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We have just got DVS and LOVE LOVE LOVE it.
It cost $2800 I think for 2 vents and a heater in the hallway. |
Posted By: mandz
Date Posted: 26 June 2008 at 3:11pm
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Can someone easily explain the difference between HRV and DVS or are they the same?
Thanks Amanda ------------- http://lilypie.com">
Zack Robert Henton - 29th December 2009 |
Posted By: Bumble
Date Posted: 26 June 2008 at 3:15pm
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We are looking at getting a Moisture master.
These have an optional heating unit that can take the chill off the air once the temp in the ceiling space drops (No it does not "heat" as such) It has 4 levels of heat options. You can also get the Heat transfer option as well, and they have another option that enables you to bring in cool external air during summer. I think that running cost is comparitable with the DVS and HRV, except for when you add in the heat option. That bumps it up to about $1.00 per hour, but you wouldn't run that full time anyways.. The main seller for me on the Moisture Master was the Heat Transfer option. We have a Kent fireplace n our lounge and the lounge gets REALLY hot, whereas the back bedrooms are REALLY cold... ------------- formerly known as "Bee" Ethan ~ March 2003 Big 6 year old school boy! Micah ~ Aug 2008 ~ Smiley pants who loves telephones! |
Posted By: mum2emj
Date Posted: 26 June 2008 at 3:24pm
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we are looking into this at the mo had hrv around last night for a quote ad will call on the others, although i have heard lots of good about hrv
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Posted By: MumsyMoo
Date Posted: 26 June 2008 at 3:30pm
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We have an HRV and do find it quite good...
The only thing that we're not enjoying is the fact that the air is now SO dry that our eczema is being affected, as eczema is not actually an allergy related issue, but has to do with the fact that the skin lacks the moisture necessary to function correctly. So the dry air is really rather irritating for us! No condensation is good though, and as Tishy said, the air flow is another positive thing. Others have mentioned it, but I'd recommend spending a bit more and getting something with a heat transfer kit. They're not really a means of keeping a room warm, but it definately takes the chill off and warming the air up a bit more, therefore reducing the need for a heater... So whereas it may cost a bit more up front, in the long run they're a great investment and save you a few $$ on heating. -------------  My wee girl is the love and light of my life!
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Posted By: AnnC
Date Posted: 26 June 2008 at 4:17pm
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Got an HRV here .... well worth the cost to get it in as our walls use to be wet from the cold and condensation in our bedrooms and now NONE AT ALL. I use to wash the walls down twice in winter due to the condesation mould that got on there and NONE AT ALL... Have't had to washa t all as no condensation mould! And that means the house doesm't smell old and damp either... It doesn't heat the house though - although now the house takes less to heat due to being dry ------------- Ann 
Also Mum to Josh (15) and Brooke (10) |
Posted By: mum2emj
Date Posted: 26 June 2008 at 5:07pm
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sounds great ann, our house has very wet windows and kayla's room is quite damp- she is often sick... thanks to the house sick programme for opening my eyes a bit and making me realise that it could be the house!!!
not so good with the eczema issue though serenity, we have eczema in our family! argh! gotta weigh it all up now, i hadnt thought about it drying out the air tool much! guess you cant win! |
Posted By: Daizy
Date Posted: 26 June 2008 at 5:17pm
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Our house is always wet. The walls are colour steel so they dont breath. We cant open window in wet weather cos they slide and are huge so the rain just comes straight in. Having a lot of people in a small space doesnt help either.
We have had to change the curtains in our house soo many times because the mould on them gets so bad. Im sure it cant be good for our health. It gets extreemly cold as well having steel walls, although when we heat it up it doesnt take long and usually holds the heat pretty well. We have been searching for things to help for a while now but having no ceiling space has been a real problem. We have dehumidifyers running all the time, which helps a bit but our power bills are shocking! -------------
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Posted By: peachy
Date Posted: 26 June 2008 at 6:49pm
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We have a DVS system in our home and our house is over 50 years old so it can be freezing! The DVS does keep it very dry and takes the chill off the air. We have very little, if any condensation when the DVS is on.
We switched the DVS off accidentally last winter for a few weeks and our windows were dripping with condensation and water was running down the walls under the window sills. So that prooved to us that it is doing something when it is on! ------------- http://lilypie.com">  http://lilypie.com">
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Posted By: Red
Date Posted: 26 June 2008 at 7:52pm
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We have an HRV and it is great the and we don't get any condensation. I think for those who have not found it effective - you might want to get it serviced or something cos we have no complaints here. It is not a heating system though which people don't always realise.
We got it installed last may and it cost approx $2,800 for a small 3 bedroom house. ------------- http://lilypie.com">  http://lilypie.com">
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Posted By: Kelpa
Date Posted: 26 June 2008 at 8:46pm
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Im so confused with what they all do....
I basically want something to stop the condensation and to "move" warm air from the hotter areas of the house which mostly occurs naturally as all living areas are pretty warm throughout summer and winter...just our rooms are all cold......... Plus I dont get how it would work if it was a freezing cold day and there was no sun would it then take the GAS heater heated air from the Living areas and pump it through to the other rooms????? -------------
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Posted By: caliandjack
Date Posted: 26 June 2008 at 8:57pm
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Then you want two different things.
DVS and HRV are home ventilation systems which draw warm dry air from your roof and by pushing it out into your living space, this forces the colder air out of your home. a Heat transfer kit is what takes the warm air from the heat source ie: heater/fire/heat pump etc and transfers it to another room by way of a vent. We got DVS and two panel heaters came with it, they keep the chill off the air, our house temp is around 16 degrees in the evenings, it does drop over night. We've found DVS fantastic during the Autumn and Spring months, when the weather is cooler but still sunny as you get the benefits from the temp in the roof. DVS struggles a bit in winter, cause it never gets hot enough. DVS will automatically turn off if the house gets below 18 degrees. ------------- http://lilypie.com" rel="nofollow">   [/url] Angel June 2012 |
Posted By: Kelpa
Date Posted: 26 June 2008 at 9:01pm
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So would the heat transfer thing stop the condensation too?? Sorry for some reason having trouble getting head around it!!! LOl (hmm maybe pregnancy) -------------
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Posted By: Bumble
Date Posted: 27 June 2008 at 9:18am
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The DVS and HRV do not have the optional heat transfer kit to be added to them (As far as I am aware)
The moisture master does. What happens is the moisture master will bring down warm air from the roof cavity until the roof cavity lowers to a certain temp (generally 18 deg) Then the heat transfer kicks in (provided the lounge gets to a certain temp, which you decide) Using the same exit vents that the roof air goes out, the unit gently sucks out the warm air in the lounge and puts it out the other vents. Is your Gas heater in the lounge flued?? (As in it is not one of those box gas heaters that you can move around, it is an installed one) The reason I ask is a non-flued Gas heater is introducing moisture (as a by product of heating) into the air. ------------- formerly known as "Bee" Ethan ~ March 2003 Big 6 year old school boy! Micah ~ Aug 2008 ~ Smiley pants who loves telephones! |
Posted By: Kelpa
Date Posted: 28 June 2008 at 8:07pm
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Ah yes ...ours is one you go get the bottle filled and can move it around.....................
Hmmm might look into the Moisture master then and cross the other two off the list! -------------
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Posted By: Candkids
Date Posted: 28 June 2008 at 10:04pm
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we have a dvs
it was installed about 4-5 yrs ago so doesnt have the flash remote pad thing lol it works fantastic but . . . in winter it also pulls the cold air out of the roof and all thru the house! so i have it off at the moment and our windows are dripping! its gross. i also found that if we used the gas heater the dvs didnt work , ------------- http://lilypie.com" rel="nofollow">  DD 10.5yrs DS 6yrs DS 11mths 5 little angles watching from above |
Posted By: Guest_91400
Date Posted: 06 August 2015 at 1:58pm
| People do free in home assessments, I've recently had HRV do a quote for me and last night had Energy solutions come and do a quote and we are getting one of their systems, alot cheaper. We are also getting a heat transfer system put in also to move the warm air from our fire through the vents also. Great investment for health reasons and a drier and warmer home:) Good luck |