We never used ours in the Summer, why bother doing so as it's hot outdoors anyway. However, it got lots of usage during the Winter. As I mentioned earlier, it was fantastic to soak in at night and watch the stars, also, if it was snowing, just to loll there and watch the snowflakes plummeting down through the steam and perish on the tip of your nose and the roiling heated surface of the tub. And then, after a few more drinks, scrunch back to the house on snow so cold that it squeaked when you trod on it...Oh, great memories:)