The M-80 Water Heater provides 9 gallons of water per minute with a 100º F temperature increase. The Water Heater is mounted on an aluminum skid with fork pockets for easy mobility. The unit is simple to set up, operate and maintain. The Water Heater has multiple capability. The unit has time tested durability. HEI also provides M-85 Water Heaters. The M-85 Water Heater differs only in the electrical controls and the exhaust system.