Not many people keep a new and inspected furnace air filter but fewer still commit to such complex undertakings. Brands from the older generation could manage running hot water with low air-flow. Furnace air filters have always had some drawbacks and many of them needed adjusting but changing your furnace air filter is now a necessity. Old furnace models could tolerate hot temperatures with minimum air flow but over time efficiency demands increased and heat exchangers came thinner with a higher risk of cracking due to overheating. Newer furnace models monitor heat exchange temperature through an advanced control which controls the furnace shutting it down before it gets too hot. It’s a decent feature which saves the furnace but it could leave you without heat when you most need it. In situations when you need to change the filter, such as when you have a heat pump, you end up using more energy. Heat pumps run at high temperatures, which means more energy is used until it ultimately shuts down. The heat pump locks out and then the auxiliary: which is also known as the back-up heat automatically goes on. Backup heat generally costs more to operate and when you add in a technician to help repair and reset the heat pump, cost rise exponentially. For this reason it’s advisable to change your filter once every few months in order to keep you and your family more comfortable. You might need to set a reminder on your home PC to help get some perspective. Take time to change your air filters at least once every two –to three months and you should have an easier time at home, not to mention the savings on your wallet. You could use a reminder on your refrigerator or the office to help get your attention the next time your furnace air filter needs changing.