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Anyone used a PIV system with integrated heater like this Nuaire model? Looking to add PIV to our home to help with ventilation (retrofit), wondering if this is a good way to avoid the draughty feeling I understand you normally can get with PIV.

Hi there! I haven't managed to find a plot yet but for the past few months I've been designing the perfect home for my partner and I. I want it to be as "eco friendly" as possible but I'm not fussed on the technology that's used in home nowadays (ASHP's & MVHR's). That's why I've focused on a small footprint with lots of airflow around the house and just a wood burner as the main heating source for the winter. I am considering electric underfloor heating in the bathroom if needed. The shell will be made from SIP panels and will be clad in cork rather than a traditional brick, render or timber cladding. I'll also have a Solar Assisted Heat Pump for hot water as it has less moving parts than an ASHP and is ample just for our hot water use. My main stumbling block now is whether the ventilation system I want is adequate (I think it is but have no real experience apart from research online). Rather than a MVHR I've gone for a PIV system to pump in the fresh air and some old fashioned vents to exhaust the stale air. I'll be relying on air currents to transfer the heat and fresh air around rather than tons of ducting. I've attached a pic to show my ideal layout and some of my ideas. Anyone have any experience with this type of low tech build here?

Hi there. This is my first post on the buildhub. I'm a halfways capable DIY-er, with more mistakes behind me than successes, but I learn. My current problem is the ventilation of my sons' bedrooms. Do you think you can help please? The window in each room has no trickle vent. Please see the attached photos. I do have a sliding vent above each bedroom into the hall. With 3 boys sharing two rooms, a lot of moisture and smell is generated overnight. I am not keen on leaving the windows open overnight, due to draughts and security. After watching a DIY video explaining how to retro-fit a trickle vent in a DG window, I drilled a pilot hole in one window frame, expecting a short penetration into void space within the frame that could likewise be accessed from the other side. Instead I hit something solid - possibly metal reinforcement within the frame. Anyways it looks like trickle vents are out, unless you can advise on what I might be doing wrong with the window frame, or perhaps suggest another means, e.g. through the brick wall? I'm concerned in any case these vents are passive and largely uncontrollable. They are also subject to clogging and the effects of wind and other weather stuff. Buildhub led me to the idea of PIV. I have plenty accessible space in my loft and easy access to gable ends, but not much money. I suspect they are expensive? I have two bathrooms, a kitchen and a living room, as well as 3 bedrooms to be involved in PIV. Do you think that might be a solution? What are the limitations? Can I DIY the installation? I also read about MVHR. Do you think that could work? Again, I don't have much money, what are the limitations? Can I DIY the installation? I read that this solution is dependent on air tightness levels of 5ach or below (air changes per hour). No idea how I can measure that. Do you know? A few questions here. Apologies. I hope you can provide some good advice that will help me. Ay. James.

Hi. I am a home ventilation specialist and work for BPC ventilation that are leading designers and suppliers of home ventilation and heat recovery systems to builders and self builders throughout The UK, Ireland and most other worldwide locations I will try to answer any questions and explain the facts from the myths Gary