Here is some useful information about the Passivhaus energy and comfort standard, and about heat recovery ventilation (MHVR).
Passivhaus Energy & Comfort Standard
Passivhaus Contractor training – become a Certified Passivhaus Tradesperson – www.passivhaustraining.co.uk/contractor
Passivhaus Designer Courses – http://www.passivhaustraining.co.uk/designer
Passivhaus Trust – promoting the Passivhaus energy and comfort standard in the UK – www.passivhaustrust.org.uk
Mechanical Ventilation with Heat Recovery
Zero Carbon Hub – MVHR in New Homes (July 2013) – http://www.zerocarbonhub.org/sites/default/files/resources/reports/Mechanical_Ventilation_with_Heat_Recovery_in_New_Homes_Final%20Report.pdf
Zero Carbon Hub – Ventilation in New Homes (Mar 2016) – http://www.zerocarbonhub.org/sites/default/files/resources/reports/ZCH_Ventilation.pdf
Zero Carbon Hub – Overheating and Ventilation in Homes (Jul 2013) – http://www.zerocarbonhub.org/sites/default/files/resources/reports/Overheating_and_Ventilation_in_Homes.pdf
Passivhaus Trust – The Case for MVHR – https://www.passivhaustrust.org.uk/UserFiles/File/research%20papers/MVHR/2020.04.27-The%20Case%20for%20MVHR-v7.pdf
MVHR in retrofit projects – http://www.superhomes.org.uk/resources/can-i-install-mvhr/
Brink and Zehnder MVHR unit instruction manuals
Brink Flair 325 4/0 instruction manual
Brink Flair 325 2/2 instruction manual
Brink Flair 400 4/0 instruction manual
Brink Sky 200 instruction manual
Zehnder ComfoAir Q350/450/600 instruction manual