Sure! Many people not only use their tub in the winter, but find that winter is their favorite time to get their hot water hydrotherapy. However, if you choose not to use your tub in the winter, please contact your authorized dealer to "drain and winterize" your tub so it can be ready to go again, when you are, in the spring!
Additional note from the engineer regarding our hot tubs: Our spas are designed to use year round and will have no problems being efficient in the northern climates. Our heat loss from the spa itself is so low, we were able to pass the ETL Test for acceptable cabinet temperatures without venting. Any heat that is created in the cabinet is not vented off, but kept inside the cabinet year round.