Reducing energy costs is one way profitability can be improved. A study was carried out to find out if there are different energy requirements for different heating sources. Three different heating methods were set up in conventional hog barn rooms. A ground source heat pump, a heat exchanger and a conventional heating system. The heaters were used for3-4 months and energy usage was tracked and compared. The study found no difference in average daily gain of the pigs and only slight differences in average daily feed intake and feed efficiency. The heat exchanger and the conventional heater were measured in gas usage and the ground source heat pump was measured in electricity. Results showed that using a ground source heat pump can reduce energy use by 45% and a heat exchanger can reduce energy use by 54% compared to a conventional heating system.