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When people build a new house or a new building in most climates a heating system or heaters need to be installed and people go to heater retailers and heating system retailers to buy new heaters and heating systems. New heaters and heating systems are also purchased when people need to replace their old heaters or heating systems. Most heater and heating system retailers install the heaters and heating systems they sell. Many heater and heating system retailers also repair the heating systems they sell. Some firms specialize in heater or heating repair. Some heater retailers specialize in selling gas heaters and heating systems while others specialize in selling; electric heating systems; heat pumps; hot water boilers; energy efficient systems; or radiant heating systems.
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