The number is owned by Dun-Rite Property Services. They said they provide radon testing in Northern Illinois. I asked how much they charge, and I was told that they offer testing at a flat rate of $170.00 regardless of how many monitors they use to meet the states requirements for radon testing.

The guy said that their monitors are calibrated and that the monitor runs a self check prior to a test to make sure the monitor is functioning properly. He also said that the monitors measure radon, temperature, humidity and barometric pressure on an hourly basis.

I called around for fun, they charge less than most of their competitors and do not charge extra if more than 1 monitor is used. I will consider using them when I have my radon test done on my house.

They have a lot of information on their website. I think it was http://www.dunrite-services.com.