The cleanliness of your vents can have an impact more than just the performance of you ventilation system; it can also impact upon your health. Cleaning your ventilation system is easy, and could do wonders for you and your home’s health
Heating and cooling ducts carry air all around your house, and vents often get dirty as a result of how much air flows through them. Find out if (and how) you need to clean them.
Part of establishing how well your home fares in terms of passive design is to establish how 'tight' it is. Learn more about how to test how much air leaks from your home.