Short answer is no, especially if you just need a top off after opening in the spring, but it depends on the circumstance. If you installed a new pool or liner yourself or if your pool is portable (Intex, Coleman, Etc.), we would prefer that you be home in case there is any issues with the installation. If you’re not going to be home just make sure we have easy access to the pool through a unlocked gate (Not ajar – for obvious safety reasons). We do not run our hoses over top of fences or railing.