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The Oil Miser 180 Combo unit from Toyotomi USA, Inc. is designed to solve domestic hot-water and hydronic-heating needs while saving money. The unit features a 148,000 BTU burner encased in a stainless-steel cabinet; compact size that allows a single-person direct-vent or chimney-vent installation; heavy-duty high-efficiency heat exchanger; is capable of burning No. 2 heating oil, No. 1 fuel oil or kerosene, provides continuous hot water at up to 240 gallons per hour; and is ETL approved for both residential houses and mobile homes. Energy star rated.

The OM-180 unit is now available to safely and reliably solve your domestic hot water and hydronic heating needs while saving you hundreds of dollars a year! The compact unit features direct or chimney vent capabilities, 1 ¼" inlets and outlets on both sides, 148,000 Btu input, adjustable temperature differential, and 180° maximum temperature. With the ability to burn marine diesel this unit will surely find it’s way into medium to larger vessels as well as homes. For best results when using the OM-180 as dual purpose appliance (water heater and hydronic heater), it is recommended to use an indirect water storage tank or heat box.