Most people are confused when it comes to the water temperature they should use when cleaning their floors. The answer to this question depends on your flooring type. If you have floors that can withstand warm or hot water, such as marble, feel free to use hot water. In most cases, your best bet is to use cool water to stay on the safe side and not damage your floors. The reason why people opt for hot water is because they think it will destroy bacteria much faster. That’s not the case, because you’ll destroy bacteria with the right cleaning solution even if you use cold water.