March is a strange time for the weather in the Central Valley. It’s hard to predict the swings in temperature, which can run into near-summer warmth only to drop back to the lowest points of winter. It’s an important month for the transition between heating season and cooling season: you need to have a furnace in good shape and an air conditioning system ready for the heavy work ahead.
No matter which forced-air comfort system you use the most during March, there’s a component the two systems have in common that requires special attention, the air filter. This filter must be changed on a regular basis as part of ongoing heating and air conditioning maintenance.
