How to Understand Indoor Air Quality | Ask This Old House

26November 2019

Ask This Old House home technology expert Ross Trethewey and plumbing and heating expert Richard Trethewey discuss indoor air quality, what it is, and how to measure it.

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1. Indoor air quality (IAQ) is a description of different compounds and pollutants that comprise the air inside a home or building, which includes everything from particles released from cooking, CO2 from humans breathing, VOCs from cleaning products, etc.
2. IAQ has become more top of mind for HVAC engineers because homes are tighter and keep air inside the building for significantly longer than in years past.
3. To keep clean air in an airtight home, consider installing an energy recovery ventilator (ERV) which can act like lungs for the building, bringing fresh air in without losing any of the heating or cooling attached to it.
4. There are a couple different monitors designed to measure and keep track of common pollutants in the air, including radon, CO2, VOCs, etc., that can be installed in a home and monitored via phone.

Most homeowner-friendly IAQ monitors have similar price points, but Ross suggests carefully reading the reviews of the monitors before investing in one, since they have different quality levels of sensors and some are more accurate than others.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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Keywords: Ask This Old House, Kevin O'Connor, Ross Trethewey, Richard Trethewey, indoor air quality, IAQ monitors

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How to Understand Indoor Air Quality | Ask This Old House

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