Enjoy crystal clear waters with our guide to how to clean a hot tub. Otherwise experts at the British and Irish Spa and Hot Tub Association are clear that even a straight-forward inflatable design will require some hot tub maintenance. Their advice is that 'the essential points on upkeep relate to the water's quality and purity and a sound filtration system. All hot tubs and swim spas will come with a warranty, and your dealer will be able to advise you on how to keep high-quality water in the hot tub'.