TORONTO AIR QUALITY DEPENDS ON SEASON, WEATHER, NEW CONSTRUCTION AND OTHER FACTORS. IT MAY BE BEST TO CHANGE CEILING FILTERS AT LEAST EVERY 3 MONTHS. A NEW CEILING FILTER COMPARED TO ONE CHANGED AFTER 3 MONTHS IS SHOWN. RESIDENTS MAY WISH TO BUY THEIR OWN FILTERS. THEY COST ABOUT $10 EACH, TAKES A 2-STEP LADDER AND ABOUT 5 MINUTES TO INSTALL.Questions? Email David Reynolds, Owner. dvrcondo@gmail.com
