Testing Indoor Air Quality
The 80/20 Rule
Most business space air infiltration is based on the 80/20 rule – 80% air circulation is, surprisingly, via attics, crawl spaces, and walls; the remaining 20% is, typically, via doors and windows. Add to this the age of the building and general wear and tear on the HVAC equipment, and you get a good picture of how the quality of air can affect your general health and/or aggravate a sensitive respiratory system. Additionally, air infiltration is money literally out of the building – higher energy costs and more wear and tear on your HVAC systems.
This may seem trivial to most of us, but let’s take a look at the effects of this infiltration from the various sources to get a better understanding of how it could affect our health and comfort for the time during the year we spend inside our businesses. The quality of the indoor air we breathe can be summarized as follows:
- Attic air leakage can contain dust, insulation fibres, dust and other unsightly contaminants.
- Basement and crawl space leakages can contain radon gas, mold and mildew.
- Duct, attic stairs, and recessed light fixtures can draw in dust and other contaminants.
- During the winter, air leaking into the house can dry out the building.
- During the summer, warm air adds humidity.
How do you remedy these issues?
Most contractors will promote a filtration system that attempts to remedy a problem, and one that generates high maintenance costs to you, the business nowner. All Quality Heating & Air, on the other hand, conducts a series of tests that produce measurable results – both from diagnostic tests and estimates on the heating and cooling losses. This also helps educate and allows the consumer to make better decisions when it comes to comfort and health.
Some examples of testing that we do are:
- Infiltration tests that provide measured results of air leakage
- Demonstrative duct, supply and return leakages
- Estimate of energy efficiency losses that translate into energy dollars
- Thermal imaging, which provides a map of hot, damp or moisture areas
The full range of tests are objective, non-intrusive, non-invasive, and provide conclusive results. Our job is to educate and help you make the right decision for you and your business when it comes down to Indoor Air Quality – after all, health and comfort are important to all of us.