* MSZ-AP25 and MFZ-KW25/35/42 indoor sound level on lowest fan speed in Heating Mode. How are Mitsubishi Electric Heat Pumps Quieter? Our quest for quietness begins at factory level. Our heat pumps are subjected to rigorous testing at our confidential sound testing facility, with sound ratings then independently certified. The Secret to Quietness Fan Design Our larger fan diameter enables the motor to run at a slower speed while maintaining the same air volume. Smaller fans have to spin faster to move more air, creating more noise as air passes over the fan tips. Coil Design The larger surface area of our coils enables the indoor unit to maintain a higher temperature. As a result, less air needs to be passed across the coil to achieve the same indoor temperature; less air means less noise. Airflow Our larger air inlet duct allows air to flow freely, reducing noise as it leaves the heat pump. Think of whistling; it is pretty hard to whistle when your mouth is open wide – the same principle applies here. Indoor Unit Our indoor unit casing has been designed to be robust, ensuring minimal noise is created when operating, i.e. no rattling or shaking. Noise Level Comparison In the context of appliances, a dishwasher registers around 55dBA and a washing machine on spin cycle registers at around 75dBA. So it’s easy to see why our heat pumps are considered so very quiet. As an idea of healthy sound levels for your home, the Night Noise Guidelines for Europe defines sleep disturbance at 42dBA, general annoyance at 32dBA, and 55dBA as likely to have a negative impact on children’s learning. It follows that when buying a heat pump for your home, the quietest available is all you should settle for − Mitsubishi Electric Heat Pumps are just that. New Zealand's Quietest Heat Pumps Quietness Mitsubishi Electric leads the industry with some of New Zealand’s quietest heat pumps. Don’t let your heat pump keep you up at night, starting from just 18dBA*, our high wall and floor console indoor units are unrivalled for quietness – because we want you to feel the warmth, not hear it. from 18dBA* Increase in Noise Level Even a small decibel increase impacts the level of sound you hear, so noise levels of any appliance are important. Sound exposure, measured in decibels (dBA), reflects pressure on your eardrum and grows exponentially; every 10dBA increase doubles the audible sound level. 0% 1 dBA 3 dBA 6 dBA 10 dBA 40% 80% 120% 7% 23% 52% 100% Noise Level Comparison 0dBA 20dBA 40dBA 60dBA 80dBA 18dBA – NZ's Quietest Indoor Sound Level* Breathing Rustling leaves Library interior Dishwasher Average street traffic Subway car interior The Mitsubishi Electric Advantage 2
RkJQdWJsaXNoZXIy MTg0ODUyNA==