It depends on what you’re cleaning. Cold water is recommended for high volume low pressure applications to knock away caked on mud and debris or when stripping away paint. For all other applications Hot water will allow for faster cleaning and reduce the amount of detergent required. Hot water is especially recommended when cleaning grease and oil.
If you’re in the agricultural, transportation or construction industry and you need a pressure washer to blast away caked on mud and dirt, then cold water will do the trick. But if you’re trying to clean engine grease, or you’re in the food processing industry and you’re counting on your pressure washer to help you break down grease and fat, kill harmful bacteria and maintain rigorous health and safety standards, then you’ll need a hot water unit.
While hot water helps clean everything better than cold water does, it isn’t always necessary. If you want to learn more about which type of pressure washer is best suited to your industry, be sure to download our free guide – 9 Things You Must Know Before Buying a Pressure Washer