Thanks for your enquiry again my recommmended ERV models are XHBQ-D6TH and XHBQ-D8TH. Pls find attached the quotation sheet for your reference.
XHBQ-D6TH air volume 600CMH (353CFM), ESP 0.39 inches WG. Efficiency 70% at high speed. power 2*100W, 220V 50Hz
XHBQ-D8TH air volume 800CMH (470CFM), ESP 0.4 inches WG, Efficiency 70% at high speed, power 2*177W, 220V 50Hz.
For the detailed product specification pls refer to attached the product catalogue page 9.