The last time I changed my furnace filter, I waited four months instead of three to do so (how time flies in the last few months of the year!)and was amazed to see how woolly my filter looked! I'm surprised it didn't say "Baaa!" when I took it out.
I can now see what a great job this filter is doing and will change it every three months from now on.
I have been using these filters ever since we bought home and didnt have a reason to change. Our constructor recommended these and we stuck with it. No problems so far. If I were to change anything, the only thing would be a better disposal mechanism. when the filter is dirty and we are folding it to fit in a bag, it spills dirt on the floor. An innovative way of not spilling the dirt would be amazing
bought it instead of the good at the recommendation of a neighbor and I have not regretted the decision. keeps the air quality of the house so much better. the best part is that it increased my electric bill by only a very small amt.