ActivePassive

Just as a point of interest, I live in a rural location similar to yours (I came to your home during an open day), although mine is slightly more open, on the side of a hill, where every house has a log burner including my own. For the last 2 years I have a particulate monitor (PM1.0, PM2.5, PM10) and latterly a VAX Pure Air 300 Air Purifier which automatically reduces internal air pollution in the house (fan speed varies automatically depending on PM levels). What I have noticed 1) prior to having the air purifier PMs in the room with the log burner would often run above 100 ug/m3 when the log burner was running, often when I was struggling to get the burner to start and draw properly, and this would often last for 1 to 2 hours 2) after installing the VAX, it is rare to get anywhere near 50ug/m3 if the WB is struggling to light and draw, and if it does the VAX gets it quickly down to under 5 ug.m3 within 5 minutes, typical levels when the burner is in use and the VAX on is under 2 ug/m3; I now also use a hand held gas burner to light the stove rather than matches as it minimises the time the boiler doors are open 3) so a combination of the VAX and the PM monitor lets me keep the house internally at reasonable levels of PMs most of the time, and certainly better than it was before 4) where I struggle with internal PMs, is very still days, like today, which happens perhaps 10 times during the winter, where my neighbours log burners create high PM levels outside. today it ranged between 60 and 100 ug/m3, at which point even with my own log burner off, the house internally was 30 ug to 50 ug most of the day, until I mpved the VAX to the centre of the house and turned the VAX on which brought down ambient levels within the house to about 10ug, but even on max I couldn't get it much lower (I live in a reasonably air permeable ( 7m3/m3/hr @ 50Pa) 1970s house. So my conclusions, narrowly relating to PMs (not NOX, VOCs or anything else) are: 1. log burners are a health problem internally unless you manage them carefully and use an air purifier (or MVHR) 2. internally, PMs can be quite high, even if you have an external air feed, largely because max PMs are caused when the doors are open however briefly when lighting the stove 3. externally log burners, rurally, seem to be a problem only on still days, for neighbours It would be difficult to persuade neighbours to stop using wood for heating, as for many its a free local source, and it part and parcel of the culture of rural life. From recollection there are word burners starting to come onto the market with catalysts for treating the smoke going up the chimney, don't know anything about them. Personally I think wood burners are acceptable in rural non-bowl exposed locations where most of the time smoke can be dispersed away from neighbouring homes. I am making no comments on burners in urban locations. I wouldn't be surprised in locations like Jeremy's, in rural valley bowl locations if high levels of ambient PMs persist for much of the winter?

I wasn't going to mention that the watermarking is easy to remove given Stroma might read this and change their restrictions.....now the cat is out of the bag......!

I think its a permanent free license. I have had my FSAP 2009 and then FSAP 2012 free license for at least 5 years; not come across any 30 day limitation. The only drawback of the free version is that reports end up with 'Draft' watermarked across them - and you can't use the free version for filing EPCs.

If you are posting questions about FSAP 2012, its helpful to also post your FSAP 2012 project file *.sts2012 (renamed as a uploadable file type if you are attaching it e.g. pdf).