Be more intelligent with humidity warnings in Air Comfort
Right now you get warnings that your humidity is too high or may cause mould at certain hard coded values i.e. greater than 60% RH or greater than 70% RH for mould.
However, humidity is only an issue when it is colder outside and humid air reaches a surface that causes it to reach its dew point by cooling down and causing condensation on that external surface that then leads to mould.
- If it is 21c inside, 21c outside and the humidity both outside and inside is 75% this is not an issue. There is nothing that can be done to remedy it without a dehumidifier which might make things more comfortable but is not necessary to prevent any chance of condensation or mould. Warning about 75% RH here is not needed.
- If it is 21c inside, 16c outside and the humidity outside is 95% as is often the case in the UK, it is physically impossible to get the house below 71% humidity even with all the windows opened or a state of the art heat recovery system. It is also not possible to cause condensation on an external surface even with the worst insulated wall/window until humidity inside reaches at least 74% for those temperatures.
This suggestion is to use thermodynamic equations with the information you have for temperature and humidity outside and inside to calculate and then communicate and warn what humidities should be concerning for causing condensation and mould (you could even have notifications for when they are reached).
If you are curious on the maths you can find a great calculator here: https://www.richard-stanton.com/humidity-calculator/