Columbus has wholesalers and manufacturers for electric heating equipment. Heating during the cold winter months is necessary, and usually, it is managed in a central fashion, like air-conditioning. The amount of heating needed also depends on average weather, fuel types and seasonal energy usage. Some of the heating options available include oil furnaces, gas furnaces, heat pumps, indoor coils and all-in-one systems. Heating can be done using various fuels, such combination of gas and electric, oil and electric, or just electric. It is important to pick a heating solution that is adequate for the needs of the establishment, and ensure energy efficiency at the same time (since fuel is expensive and also a non-renewable source of energy). One should replace or repair a heating system broken down or condemned by gas inspectors. These systems usually come with warranties. Many models of furnaces are manufactured, one or more of which can be available in Columbus. Wholesalers sell in bulk, at lower than retail rates.