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TOYOTOMI On-Demand Hydronic Heater | OM-128HH

Toyotomi  |  SKU: TOY-OM-128HH
$3,65628
Shipping calculated at checkout.

TOYOTOMI On-Demand Hydronic Heater | OM-128HH is backordered and will ship as soon as it is back in stock.

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Pickup available at 4490 Avenue des Industries

Usually ready in 2-4 days

Description

The Toyotomi OM-128HH On-Demand Hydronic Heater is a compact, low-mass oil-fired boiler engineered for closed-loop hydronic heating systems. With 148,000 BTU/h input and 128,900 BTU/h output and 87.1% efficiency AFUE, it delivers continuous hot water without storage losses, using an on-demand stainless steel heat exchanger. The unit supports K-1 kerosene, No.1/No.2 fuel oil and ULSD, offers direct-vent or chimney-vent configurations, and integrates advanced safety controls including overheat protection, dual temperature fuses and ignition safety devices, making it suitable for space-constrained residential and light commercial installations.

Warranty:
  • 10-Year Limited Warranty
Additional Details:
  • Type: Combustion Type – Oil Pressure Vapor
    Flue Pipe – Forced Flue / Chimney Vent
    Heating System – On-Demand
    Purpose – Hydronic Heating
  • Weight: 77 lbs (34.93 kg)

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SpecificationsProduct AttachmentsReviews

Key Features

The Advantage of Smarter Heating

Continuous Hot Water Performance

Enjoy a reliable supply of continuous hot water, designed to support residential, cabin, and light commercial heating applications with consistent comfort.

Compact & Easy to Install

The compact size and manageable weight allow for one-person installation, helping reduce setup time and simplify handling on-site.

Flexible System Connections

The OM-128HH includes 1/2-inch drain and 3/4-inch pressure valve connections on the left side, plus 1-1/4-inch supply and return connections on the right side for efficient hydronic system integration.

Direct Vent or Chimney Vent Installation

Choose between direct vent or chimney vent options, offering flexibility for different building layouts and heating system requirements.

Cold Start Capability

Built for dependable performance in low-temperature conditions, the cold start capability helps ensure reliable operation when heat is needed most.

Quiet & Reliable Operation

Engineered for very quiet performance, this heating system delivers dependable comfort while minimizing noise in indoor environments.

Easy-Service Heat Exchanger Design

The heat exchanger is easily accessible from the top for servicing, with no need to disconnect water pipes—making maintenance faster and more convenient.

Advanced Safety & Ignition Monitoring

A new temperature fuse helps shut down the system if the heat exchanger gets too hot, while the updated photo eye timing sequence supports smoother, more reliable ignition monitoring.

Durable Stainless Steel Construction & Cycling Control

The stainless steel heat exchanger and cabinet provide long-lasting durability and corrosion resistance, while the adjustable temperature differential improves cycling control, comfort, and overall heating efficiency.

Additional Details

Dimensions (inch | mm)320.68 × 704.85 × 571.5 mm (12.625 × 27.75 × 22.5 in)

Resources & Downloads

Installation Manual
Download
Operation Manual
Download

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