I have used ODC twice now and would recommend their service. The technician was thorough, friendly, and even changed my furnace filter (a tight task I dislike), so really appreciated him giving some extra thought to that.
The air in our home feels lighter and the a.c. feels cooler.
I also had the dryer vent/tube cleaned and it was scary how clogged it was.
Thank you!

Althea,  Kitchener