Hi Glyn, have OEM looked much into MVHR efficiency monitoring?
I think it could be interesting to have some 3rd party monitoring of some systems to work out what units perform best in the real world as opposed to advertised unit efficiencies.
I think you’d have to monitor airflow rate (maybe velocity and knowledge of duct size), intake, supply and extract temperatures (and humidities if ERV) and power consumption.
Some of that info could maybe be obtained from the unit fairly accurately (e.g. temperatures) but few units measure airflow and when they do it isn’t the most accurate.
To get better info about the system it would also be good to know static pressure of the system but maybe this could be a one off measured at commissioning value.
Any sensors I’ve looked into have gotten fairly expensive quickly.
I work for a company designing MVHR systems so it would be good for comparing units and proving system performance.