If you care to better your indoor air quality and energy efficiency at the same time, you may wish to stick with some elementary principles that will do both of these at the same time.
If you perform whatever you can to prevent cold drafts you will restrict the number of airborne allergens entering your home from the outside. By preventing cold drafts, you will be aiding your indoor air quality and energy efficiency by limiting the loss of warmth in the wintertime or cold room air in the heat of the summer. Simultaneously, you are limiting outside irritants as well as toxicant particles that may be based in the air around the outside of your home. If you circulate the warm and cool air inside your home, you will not be allowing for your rooms to grow stuffy and stale as you are preventing smells. You will as well be able to master the humidity in your home. By controlling the humidity in your home, you will be in condition to prevent mold and the need to use a dehumidifier, which can be very costly to run.
You will be far ahead with indoor air quality and energy efficiency if you are capable to create a sanctuary inside your home away from airborne microbes that may include anthrax, botulism, small pox, toxic gasses, and radioactive particles that are freed by terrorists or by accident.
A plain air leak test can be the prime step towards indoor air quality and energy efficiency. The air leakage test can be done with a fan in and outside doorway. After the fan has been set in the outside doorway you will notice that the amount of air flowing through the fan is match to the air running through any leakages in the shell of the building’s construction.
If you apply small cool white fume puffs during the air leakage test you will be able to distinguish the areas where insects, debris, mold spores, pollen and whatsoever possible cold drafts may be entering your home.
In most fresh home constructions as well as existing constructions there may be cracks, gaps and holes in the external shell construction that can total as much if not more than 100 to 300 sq in. These holes in the construction of your home’s shell are accessible all the time. If you possess a ducted air circulation system in your home it may be making a large level of pressure that can drive air through the cracks, crevices, holes and escapes between the interior and outside.