Quote:
Originally Posted by Deerfly
What kind of filters are you talking about? I buy 3 for less that $10 at Lowes and install them myself. I do have a HVAC guy come once a year and go through my HVAC system for about $70 and he puts a new filter in as part of the inspection.
Having said all of that.....you're right about watching out for less that honest techs.
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All depends on the MERV which I found out is to do with what it filters. Looking at the chart
http://www.mechreps.com/PDF/Merv_Rating_Chart.pdf you should be wary of low (cheap) MERV ratings