If your looking for someone to change your reverse osmosis RO filters you can buy a 5 year or 10 supply from me and do it yourself at a fraction of the cost of a service call. I sell replacement filters and parts for every type water filter and system on the market including specialty systems from companies such as Simple H2O, H2O Pros, Culligan, Nelson Water etc.... I service all of Canada. Please contact me for pricing. To learn more please visit my website: http://www.ottawawaterfiltersco.com