Absolute Radon has been wonderful to work with. From the initial call, Katherine was very responsive and patient. We ended up choosing Absolute Radon due to their great warranty in addition to being insured and certified. We appreciated that they came out to give a free estimate. We have a unique situation with the layout of our home and many other companies just quoted over the phone. We felt we had a more accurate estimate from Absolute because they came out to see the space. We thought we had to drill through our foundation to vent the system but on the day of instillation, Nick found a way to do it without drilling which saved us $300! Nick was great and worked quickly (he and his partner finished about an hour earlier than expected). We would highly recommend Absolute Radon.