After reading all the positive reviews I didn't realise how noisy this would be. I obviously expect the bubbles to make noise but also the heating/filtration makes a loud constant hum 24/7. The hot tub is at the back of the house and I can still hear it standing on the road at the front of the house (with the entire house between us). I can also still hear it in my bedroom with the window closed. I feel bad to make the neighbours listen to this loud hum all day and night, especially if they have a window open or are in their back garden where it is especially loud.