Does your home have an air exchanger? If so, how will it affect a radon test?
“When conducting a short-term radon test, should the air exchanger be running or not? Great question. I’ve heard it argued both ways. If a home is designed to have an air exchanger running, I say it ought to run during the radon test.
What’s an air exchanger and how does it affect radon?
An air exchanger, also known as a Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV) is a big box in the furnace room that exchanges the air in a home. You’ll typically have four ducts on these systems; one brings stale air into the unit from the house, a second brings stale air from the unit to the outdoors, and the other two do the opposite. They bring fresh air into the unit from the outdoors and then bring fresh air from the unit into the home.”
Read more on this question here.
The article mentions an interesting point about when an air exchanger is running at 100%. The author states that he heard from an instructor at a radon seminar that at that level, it could potentially result in radon readings to be half of what they actually are. Therefore, it’s probably best to set the exchanger to a normal running mode for more accurate results.
Whether you have an air exchanger in your home or not, our technicians perform thorough testing for Radon. If you suspect your home has dangerous levels of radon, please don’t hesitate to call us. We can be reached at 507-333-9838 or visit our radon page for more information.