Is your air conditioner not cooling very well or at all? A good place to check before you call The Heating Dude is your air filter. A clogged air filter can cause a system to cool poorly or not cool at all. If your filter is clogged you should replace it. You can get the air filter for your air conditioning system at your local hardware store, or give Heating Dude a call and we can furnish you with one. Don’t let a clogged air filter cost you alot of money on a diagnostic when all you need is a new air filter.