I have been helping a long term friend look for a house in Raymond NH. Well the house he really wants Has radon. The last test is from 2003. Has radon levels of 1.6. If he gets the house it will be retested. Well I know radon filters can be pricey. He knows this n is already looking for prices. If the sale goes thru it will be a sale. Should be cash in hand. Help with contacts or shoot me your phone number. Thank you.