I recently installed this faucet and th boost button became inoperable within a few uses. I reached out to customer service via chat on Monday. Since my contractor had purchased this awhile ago and with the Covid-19 my kitchen was delayed. I explained this and a few minutes later I was told I would receive a replacement. I thought just the button and we would have to remove and install. I received my replacement today and very happy with the ease of replacing the part. Very pleased with the look and function and the price. Thank you, Annie