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One comment about my old furnace filter changed how I buy them now

Last fall in Edmonton, a HVAC tech told me I was wasting money on cheap fiberglass filters. He showed me how my furnace was working twice as hard with a $5 filter compared to a $15 pleated one. Now I only buy MERV 8 filters from Home Hardware and swap them every 3 months like clockwork. Anyone else get told they were doing something basic all wrong?
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3 Comments
shane_park92
Been running basic fiberglass filters for years with zero issues, never saw a reason to spend more.
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ryanm60
ryanm601mo ago
Fiberglass is better than nothing but @shane_park92 you're basically just stopping the big dust bunnies... everything else just sails right through your furnace. I ran those cheap ones for a year then swapped to a MERV 8 and my AC coils stayed clean for the first time ever. The utility bill dropped a little too. Your blower motor probably hates you.
6
juliarodriguez
Whoa, nobody's factoring in reduced airflow can shorten your AC compressor's life too!
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