Ask yourself if you’re going to be using a hot water pressure washer very often and can you justify the expense. I my case the answer is No. In 41 years of being in the car wash business I can only remember having the need or a hot water pressure washer once and I was able to get by without buying or renting one. We’ve been egged a few times and the key is to get it off ASAP and the keep it wet. Once it dries it’s a bitch to get off, as you well know.