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6 What maintenance can you do yourself? Replace your HVAC filter, or clean it if you have a reusable one, about once a month during operating seasons. A dirty filter can restrict airflow and increase energy use in your home. Look for a MERV rating of 11 or higher when choosing filters for better in- door air quality. But keep in mind the high- er the MERV rating the more expensive the filter. Rarely if ever do homes need hospital quality air filters. Also, keep the area around your outside unit clean—have at least 2 to 3 feet of space around the unit and a 5-foot clear- ance above it. It's important to leave ad- equate space between the unit and any plants to avoid restricting airflow. 7 How often should you get your HVAC serviced? Get your unit professionally serviced at least twice a year, once in the spring and once in the fall. Having it checked during the milder seasons helps avoid any emer- gencies during the peak seasons, when it may be more difficult to get an appoint- ment. You can get ahead of any costly repairs or replacements you might need down the road by implementing regular service for this appliance. 8 How do you know whether to replace or repair your HVAC? Have an HVAC service professional evaluate your current system's condition, they can see whether there is a simple issue, like a spider in the contactor, or if the system is ready for retirement. It's important to keep in mind that, on average, air conditioners last for 10 to 12 years and furnaces last for 15 to 20 years. 9 Are financing and rebates available? HVAC dealers often offer monthly pay- ment plans and manufacturers regularly have deals on their websites. Rebates and tax credits are often available to help off- set the cost of a higher-SEER system, so it's important to ask your technician about specific HVAC warranty plans that may best fit your needs and situation.