Martin Direct Vent propane heaters are an efficient and reliable heating solution for homes, offering models in 8,000, 11,000, and 20,000 BTU sizes. These heaters utilize outdoor air for combustion, ensuring safety and cleanliness indoors while maximizing warm air circulation. Propane consumption varies based on heater size, temperature settings, room insulation, and usage patterns, with typical usage ranging from 0.37 to 0.92 gallons per hour. By optimizing thermostat settings, improving insulation, and performing regular maintenance, you can effectively manage propane usage and keep your home cozy throughout the winter.