Water Heater Pump designed for bus or coach luxurious bus with high efficiency, is favored by the majority of people.

Energy-efficient:
The ratio output against input is coefficient of performance (COP). That of gas,

and fuel of boiler will be less than 06-0. 8. The efficiency of the coal-burning boiler

is even lower, generally only 0.3-0.7. 

Let our price and quality speak for us... trust every hard working factory.