Eric

Fully agree with Thorfun, that is a big project & should be designed professionally from the start. It may even require more than one unit? I used BPC ventilation for my current house design which was a retrofit & found them really good as have many others on here. I think it cost around £100 for them to do the design/layout/rates etc. I am using Blauberg for my self build, again around £100 for the service & very helpful.

I would be interested to see the unit once insulated if possible? I have the vent axia sentinel BH & I need to insulate it.

I don’t have a trap fitted on my unit yet, I just have it draining into a bucket. I either have to drain it outside or to the soil vent pipe. It’s balanced very well. Does it matter that water is accumulating in the heat exchanger?

I have the same unit with similar problems, mine is in the attic & the heat exchanger keeps filling up with water. I’m hoping that some insulation around the unit will help.

I can’t help with your problem but I’m interested to see what you think of the fingerprint sensor as I’m thinking about having one.

Hi @Pete, Nice door but even nicer cladding ? what’s it called & where did you get it?

@Russdl did you go for a Komfovent unit? I have just received a quote from BPC for a new build & it’s for a Komfovent R500. I can’t find much information on them, they look fairly industrial! The unit is huge, heavy & has 250mm ducting.

@JFDIY it feels fine at the port on the unit, just way less at the extract valves. I will have an anemometer next week so I should be able to see what it is actually doing. Just seemed very little on the extract.

Ok, so I have fitted the unit, & all the pipe work etc. I have run the system to test it & there seems to be very little extract flow, inlet is fine at 30% & 50% etc. The extract doesn’t feel like it gets any better with boost etc. There is plenty of flow from the exhaust side. All pipe work is correct & tight. I have opened the inlet valves around 3 turns open. The summer bypass doesn’t activate & it doesn’t seem to detect humidity. Any ideas or suggestions?

Thanks @jamieled Yes, it could be a neat install if I just went straight out the gable wall but I think it will be better to drop the pipe down before going out the wall. Regards, Eric

Thanks @Stones Its a retrofit on a bungalow. I was planning to take the in & out pipes through the gable wall that the unit is on, the question was is it ok to go straight out the wall or should I drop the pipe down before going out the wall to try & minimise rain water entering the unit etc. Yes, I will use a trap. The bathroom extractor fan will be getting removed so I would like to use the existing hole for it so I only have to core 1 more hole. So it might be easier to floor mount the unit. Regards, Eric

Hello all, This is my first post on this forum. I have read a lot of posts but can’t find the info that I am looking for. I am installing a vent axia MVHR system & I’m unsure how fussy I need to be with the air in & out pipe work. So the questions I have are, Can you just go straight out the wall from the unit with the pipe or should you have the pipe lower to reduce the chance of rain water entering the unit through the pipe? Should I just floor mount it instead, use the existing extract hose for the bathroom fan, then make another hole for inlet? Probably easier I think. Can I put the drain to the SVP? Am I just overthinking it & crack on? Any help/ideas will be appreciated, I don’t want to core holes to find it’s unsuitable etc. Regards, Eric