Plumbing, Heating and Pool Repair Guides

Toyotomi Oil Miser Water Heater Review


WeT HeaD KnowledgeToyotomi USA is a subsidiary of the parent company Toyotomi Co. LTD of Japan. The company has been has been in the heating and cooling products since 1947.

There have been over 10 million products sold from the Toyotomi Company in the United States alone. All of their products meet the standards of the International Quality Control Standards ISO9002 and ISO14001. All of their products are designed with quality and safety in mind.One of the premier selling water heaters is the Oil Miser OM-148. This water heater is designed to provide hot water on demand. This feature alone can save you money due to the fact that there is no cost for storing water until you need it. The Oil Miser OM-148 is cost effective and will deliver hot water on demand every time. Let’s see what great features the OM-148 Oil Fired Water Heater has to offer.

There are so many great benefits to using tank water heaters alone. But there are other benefits from using the OM-148 from Toyotomi. One of these benefits is the economical benefit. Customers have decreased their hot water heating costs by an impressive 70%. The water heats up as you need it and since there is no water storage, you will save money on the water bills too. The OM-148 can heat up to 240 gallons of water in one hour. The water temperature is consistent every time. The unit is equipped with a stainless steel heat exchanger. The unit is perfectly safe; it is UL and CUL certified. This unit is perfect for the homes as well as mobile homes. Another benefit is that the OM-148 carries a 10 year limited warranty.

The Specifications of the Toyotomi Oil Miser OM-148:

The OM-148 is a Combustion Type of Water Heater. It has a Pressure Vapor Flue Pipe and a Forced Flue Heating Systems. The water source of the OM-148 is a direct connection to the main water supply. The ignition system is a High Voltage Discharge Spark design. The Fuel Type of the OM-148 is Kerosene, NO 1 Fuel Oil and No 2 Fuel Oil.

The OM-148 has an energy efficiency of 88%. The Hot Water Output is 148,000 BTU’s per hour with a fuel consumption of 1.1 gallons per hour. The heat exchanger has a capacity of 5.10 gallons with a maximum hot water temperature of 155 degrees Fahrenheit.

Safety Tips for Installation:

You should not attempt to install your OM-148 Water Heater alone. Always contact a professional installer to ensure proper operation and safety. It is recommended that you never use any other Fuel Oil other than Fuel No 1 and No 2, never use gasoline. If you need to remove any of the panels from the water heater for inspection, always make sure that the electricity is off. You should read and understand the installation instructions such as clearances for proper ventilations.

Choosing a Location:

When you are choosing a location for your new OM-148 water heater, you should keep in mind the company’s recommendations. One of these recommendations is that you choose a place where there is no moisture, water spills or snow. Choose a place where the draining of the system can be done without any obstructions. You should choose a place that is combustion free and a place where the tank can be installed safely. You should choose a place where the floor on the water heater has to be able to absorb any string vibration or shock. The floor must be able withstand the weight of the water heater which is 86 pounds empty. It is recommended that when you choose an installer that you ask their recommendation because they would have more knowledge of where a good location is.

You will receive everything you need to install your new water heater. The package includes the Flue Pipe Installation Kit, Chimney Installation Adapter Kit, the OM-148 Water Heater and all of the necessary Accessories. The installation manual and all of the literature you will need to maintain your new water heater. Everything you need except for the Fuel Oil.

Toyotomi Water Heaters may not be a well-known company such as Rheem or Takagi but they have a great reputation and have sold over 10 million products here in the United States alone. If you are looking for an oil fired water heater to save money, then the Toyotomi is the company for you. It is always best to shop around for the best water heaters and the best prices. Comparison shopping is the way to go, especially when you are making a big choice like a water heater. Log onto the Toyotomi website and find the nearest factory outlet store and for sales and service.


  1. I am the owner of a Plumbing and Heating company in Connecticut and have been installing the Toyotomi OM-148 since 2008. I myself and my customers truly like the unit for hot water purposes in the home. I would like to able to be included in your web site as a contractor in CT. to install these water heaters. I have been purchasing these units from Bob at Warmth for Less located in Manchester, CT. I would also like to advertise these units with your logo and pamflets. Please contact me as soon as possible. Thank You, Herb Davidson, Davidson Plumbing, Heating & Remodeling LLC, 27 White Oak Rd., Somers CT.06071. 860-749-5400 bus. phone 860-604-6202 cell number, or

  2. Mr. Davidson,
    I’m looking to purchase one of these units and up here I seem to have to first buy the unit and vent kit seperately ( costing me more $ ) then the original price quoted is too low and the dealer seems like they want to charge me more money. Could you please enlighten me to the cost of the om -148 toyo water heater in your neck of the woods so I can see if what I’m paying is legit or I’m being Gouged ?
    Thanks Mark

  3. I wish more people would write sites like this that are actually fun to read. With all the crap floating around on the web, it is refreshing to read a site like yours instead.

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