Laundry and Kitchen less than 60 seconds (front of the loop) Bathrooms and showers maybe 90-120 seconds. We usually just tell Alexia to start recirculation undress for shower and by that time we have hot water. Or Ill use the app start it and head back to shower. The buttons only recirculate for 5 min per push which is plenty for most applications. Using Alexa or the phone app allows us to set a longer recirc time if needed. I purchased 5 buttons (6 max so they say) one in each bathroom, the kitchen sink and the washing machine. We have a long insulated loop 200 ft or so.