Hello everyone, I am new to home ownership and plumbing.
I recently had my hot and cold water pipes in my upstairs bathroom freeze up a few days ago after a cold night. The home is heated and the basement is relatively warm. The pipes run along an outside wall and are not accessible unless I tear open the dry wall so I believe that this is where they are freezing up. I want to avoid using heat tape and get a long-term solution.
I noticed that there are hot water recirculation products on the market that involve a pump and a valve that connects the hot and cold water lines at the sink. This helps to reduce frozen pipes since it keeps the hot and cold water moving. Here is my question: if I only install the valve, see link below for example, will this prevent the pipes from freezing? Will it allow the water to circulate and move? I don't care about instant hot water, I just want to prevent any freeze ups.
If this won't work, what would you recommend? Note that this is a rental property so I'd rather not install something under the sink that needs to be plugged in during the winter since the tenant might forget to turn it on etc..
Thank you and I appreciate any information!!