Its called heat recovery ventillation, its the cheapest and most cost efficient improvement you can make to your life, house and energy bill. You will have fre

Its called heat recovery ventillation, its the cheapest and most cost efficient improvement you can make to your life, house and energy bill. You will have fresh air, control humidity and use 95% of the heat in your house air to heat incoming air from outside. It solves problems with mould and humidty. You can seal your house from the elments A 'box' that does everything costs just 1 grand, just install ducting and you are done.