Enginuk

Thank you for all your feedback, One of the reasons why I am exploring is that both myself and my wife suffer from hay fever from March to May. I heard MVHR has helped for some... It may be the filtering I will look at the recommendations

yes trickle vent all over the place at the moment. I am just hoping to retain some of the heat from the dryer, cylinder tank, bathroom, kitchen in exchange for some fresh air....

Hi there, renovation on going, and currently in 1st fix. Came across MVHR quite late, so won't be able to install the full MVHR now But I am thinking if I can go with a small DIY unit in the Util room to improve the air quality.. appreciate some advice. The downstairs Util room sits among kitchen, bathroom and study, so I am thinking to have a small unit in the util extracting the air from the kitchen, bathroom and util, and pushing the fresh air into the study room. Ducting will be pretty straight forward as these are all near by rooms. Question : as I have builder control overseeing the build work, this MVHR is 'out of scope'. If I were to go with this small unit / DIY, will this get refused by the building control and affect the sign off of the whole project ? Thanks