20Homeowner MaintenanceYour investment in a WaterFurnace geothermal system was a significant expenditure. While these systems are amongthe most reliable HVAC systems available, your WaterFurnace system (and any other HVAC system) must be properlymaintained in order to achieve maximum performance and long system life (like your automobile). It is recommendedthat you have your system thoroughly checked by your dealer twice per year (usually Spring and Fall) to maintainoptimum performance. If your dealer offers a maintenance agreement program, we suggest you take advantage of it.Regular checks will ensure that your system performs safely and efficiently with less likelihood of major problems andpremature failure.Things You Can Do1. Check Thermostat (Once a month)Check your thermostat to ensure that there are no fault signals displayed or that Emergency Heat is not engaged.If you have selected Constant Fan on your thermostat, your operating cost will be affected more (they will be higher)if your unit is equipped with a single speed PSC blower instead of a variable speed ECM blower.2. Replace Your FilterStandard disposable filters (Every 2 to 4 months)Pleated disposable filters (1˝ every 2-4 months; 2˝ and 4˝ every 4-6 months)If you use a disposable filter, change it regularly before it accumulates too much dirt. Never attempt to clean it.Simply throw it away and install a new one. Do not turn a dirty filter over to the clean side and reinstall it—this resultsin blowing the accumulated dirt right back into the home. Disposable filters can be purchased at most hardwarestores or through your local WaterFurnace dealer.Electrostatic Filters (Clean every 1-2 months)Electronic Air Cleaners (Clean and replace media every 2-4 months)If you have an electronic air cleaner, replace the filter media according to the manufacturer’s instructions.3. Check the Unit and Accessories (Twice per year)Check for LEDs that are ON. Check for moisture around the base of the unit or the flow center. Check for anythingappearing or sounding unusual.4. Check Drain Pan (Annually during heavy cooling periods)The drain pan collects condensation from the air coil. Water dripping into the pan is normal; however, the drain hole(or drain hose) may occasionally become clogged. This will most likely occur during the cooling season.5. Check Ductwork (Annually)A recent study found that many homes had a least one section of duct disconnected resulting in the blowing ofconditioned air into attics or crawl spaces. It's a good idea to give your attic or crawl space a quick inspection everyyear, just to make sure everything is connected properly. Check registers in every room for air flow and to ensure theyare open.HOMEOWNER MAINTENANCE