Weight– 81 Lbs.

W x H x D– 12.7 x 27.3 x 22.5

SKU: OM180C Category:


OM 128 DIRECT VENT TOYOTOMI ON-DEMAND HYDRONIC HEATER is a New and improved model from the Oil Miser 180! Compact low-mass water heater with 87% AFUE efficiency saves customers as much or more than the leading cast iron boilers, at half the size!

New Features:

  • Improved Performance
  • Easier Maintenance
  • New Safety Features

The Toyotomi/Oil Miser water heaters are on-demand, which means there is no costly storage of hot water until it is needed. Like all Toyotomi products they are safe, reliable, and easy to install. You’ll love the convenience, and you’ll love your new lifestyle.

Continuous hot water
Compact size and weight allows for one person installation
OM-128HH has 1/2 inch drain and 3/4 inch pressure valve connections on the left side and 1 1/4 inch connections for supply and return on the right side
Choice of direct vent or chimney vent
Cold start capability
Very quiet and reliable operation
Heat exchanger has easy access for servicing from the top without having to disconnect any water pipes
New temperature fuse that attaches to the heat exchanger, to cause shut down in case the top of the heat exchanger gets too hot
New timing sequence for the photo eye.
Stainless steel heat exchanger and cabinet
Adjustable temperature differential for cycling control