Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Retired

I go away for about a week every winter and I was concerned about my furnace possibly failing and my water pipes freezing. I purchased the first home freeze alert and I tested it by installing it in my garage where the temperature was cold and it worked fine. The temperature was below 42 degrees and I got the tone like I should have. I then used it for a couple of winters when I went away. I assumed it was working as it should have. When I finally got around to testing it again, I realized that it was not working. I purchased another one for $38.00 and the new one has done the same thing. I do not recommend this product for the price I had to pay. It has a two year warranty but unfortunately it was just past the warranty period each time when I realized that it was not working. It would be a great idea if I could depend on it. I also want to mention that I am writing this review but I did not purchase this product from Amazon.