Spencer Manufacturing Mark Spencer IV Cold Busters

The Spencer Manufacturing Mark Spencer IV Cold Busters is a reliable air conditioning unit specifically designed for heating applications. This used model is engineered to provide a high volume of clean, heated air, making it ideal for aircraft cabins and ground support in cold-weather environments. Featuring dual operating modes, it offers both heating and ventilation options, ensuring year-round functionality. This model is equipped with a 4-position throttle control system, which allows for precise heat output adjustments ranging from 1,100 to 2,800 RPM. The engine coolant is circulated through an exhaust heat exchanger to maximize thermal efficiency, and an automatic thermostat set to 195°F (91°C) helps prevent overheating by dissipating excess heat. With real-time monitoring through duct temperature and pressure gauges, operators can ensure optimal performance and safety. The illuminated control panel facilitates operation around the clock, while a visible warning light system enhances safe, unattended use. Mounted on a compact, rugged trailer, the Mark Spencer IV is built to withstand harsh cold environments, making it a dependable choice for airport and ground support operations seeking efficient, safe, and versatile heating solutions.