It is that time of year. We are ready to turn the page to Summer. It was a very mild winter even more so than ever we are going to have varying degrees of debris accumulated on our furnace filters. For washable filters I recommend vacuuming the filter first to remove larger particles and then hosing it off for the final cleaning. Just water is all you need. For replaceable filters there is a large variety of filters out there. For the most part the more money you spend the better filter you get. Better filters filter out the smaller particles at a higher rate. Remember Energy Upgrade CA is doing rebates and as well as Carrier rebates are still going strong. Have a great day!