Nick,
I have fitted 140 on a new build site, am told by residents that little or no condensation on windows, fitted three types Nuaire's Sunwarm, Ecosmart and Drimaster, with the later being the basic positive input ventilation unit. Currently monitoring ten of each from an energy input viewpoint, a year down the line is does seem as if they do provide a solar input into the home and in the case of the Ecosmart may even exceed the manufacturers claims.
I fitted a Drimaster in my 1920's home about 18months ago, I had very bad consensation in the back of a wardrobe where the wall ran with water this time of year and bad mould growth in the bathroom. No longer have consendation in wardrobe and mould in bathroom is almost banished (think there may be a bigger problem here with the external wall. The first morning after the day I switched it on the improvement in air quality was very noticable, it's still as good you just don't notice it know, helped with my son's very bad hay fever. Only one regret, I wished I had fitted the Ecosmart (think it's now called a sunwarm tile) to help with the heating bills.

Thanks guys.

Peter,

Does the sunwarm tile alter the appearance of the roof ?

May be a stupid question but does closing internal doors efect the performance?

Cheers

Thanks Peter spoke to Nuair at length today, helpful people.

Posted By: DJTaNY OTHER SUGGESTIONS ARE WELCOME. THANKS

Fix your caps lock key.

Paul in Montreal.

I too am interested in this sytem: never heard of it until this thread. On the face of it, it sounds like a good idea, so why don't we hear about it regularly on this forum? Airtightness and MHRV are discussed all the time, but I wonder whether this is actually a more practical solution, especially in older houses where complete airtightness is impossible. Or maybe it's a lot of money for only marginal benefit if you don't have damp problems.

So can anyone explain to me where this system is suitable, pros and cons etc? We are just staring refurbishment on a 100 yr-old house without any damp problems, probably because it's very leaky. I want to make it as airtight as possible, but hadn't considered doing anything about ventilation until now.

Interesting threads! I have the nu aire agent coming round tomorrow. The reviews seem to vary widely in either outright condemnation or love of the product. We live in a large Edwardian house which we have refurbished and in doing so with things like double glazing have removed the natural flow of air. In particular we have a large kitchen with bi folding glass doors. I wonder if the unti can extract the condensation from that room as it would be the furthest from the duct. We do try and keep all the windows open on trickle even in the coldest weather but we still get mould in the corner of the rooms. Comments would be welcome.

Thanks David, I think I will ring Nu aire direct and see if they have specific agents. The people who came round were damp specialists and not very clued up on the technical aspects of the drimaster.

Tom