The filters in your heat pump need to be cleaned every 2 - 4 weeks depending on how dusty your house is. This can be done with a vacuum cleaner. However, it's wise to have your unit serviced annually, which we can do for only $120 in. GST. We'll thoroughly clean the pump, sanitise filters, change remote batteries and anything else required to ensure your system is always operating at its best and most efficient. A comprehensive maintenance programme for businesses can also be arranged.