Heating and plumbing supplies are available for retail sale in O Fallon. Plumbing is the arrangement of pipes and drains in an establishment, an arrangement which carries either water or waste water/sewage. Heating refers to centralized heating solutions. Both these systems need specialized supplies and equipment, which are available in O Fallon. Some of the supplies that may be needed include boilers, cylinders, electric fire systems and enclosures, bathroom accessories, taps, underfloor heating systems etc. They are manufactured by a number of companies, one or more of which are available in O Fallon. One can also buy sets of equipment, such as a complete shower set, or a bathroom suite set, and so on. It is important to buy quality supplies that come with a performance and safety warranty. Especially in the case of heating supplies, energy efficiency is also an important consideration.