Warm. Efficient. Clean.

L531/532 Vented Heater


WE’VE BEEN GREEN FOR 40 YEARS. A half million satisfied customers can’t be wrong. From the Arctic to Antarctica, from Maine to California the revolutionary Toyotomi sealed combustion direct vent heating systems (TOYOSTOVE, Laser, and OIL MISER models) are the most fuel-efficient, energy saving, heating systems available (use up to 50% less fuel for heating the same area) and have substantially lower emissions (up to 50% less CO²) than traditional oil-fired heating systems. That, along with their whisper-quiet comfort, safety and dependability are why they are the most popular, best-selling, vented heating systems in the rugged, rural environment of Alaska. Toyotomi direct vent heating systems provide all the comfort and convenience of central heating in one small suitcase size unit at a fraction of the cost to purchase and operate. They are easy to install and require no chimney, ductwork, plumbing or electrical work. In most cases, these units can heat your entire home. They are also the perfect solution for those hard to heat rooms or areas—all too common in many homes. This is especially true of older homes and those with additions where a central heating system is just not enough. Now, even problem areas can be made comfortable, at an affordable price. In addition, Toyotomi direct vent heating systems are ideal for garages, basements, summer homes, hunting cabins, and are certified for installation in mobile homes and manufactured housing. These units operate on K-1 Kerosene, No. 1 Low Sulfur Fuel Oil, or Ultra Low Sulfur Heating Oil /Ultra Low Sulfur Diesel.

Efficient and Economical 

You get much more heat for the money than with other conventional oil-fired heating systems as they are much less expensive to purchase, install and operate. The cost to operate a Toyotomi vented heating system is so economical that owners enjoy annual savings of up to 50% over conventional heating systems. A Toyotomi heater can pay for itself in just a few short years. Most conventional oil-fired heating systems only run at peak efficiency 20% of the time. That’s because they first have to reach the desired temperature, then they have to cool down, then continually repeat this same process—like stop-and-go heavy city traffic driving. Toyotomi’s special stainless steel heat exchangers carry the highest efficiency code and run at peak efficiency 100% of the time—like smooth, steady highway driving. And Toyotomi heaters don’t lose heat through ducts, pipes and registers like conventional heating systems do. Remember, it’s not necessarily how much fuel costs; it’s how much fuel you use. (By the way, did you know that oil generates one-third more heat (BTU output) than natural gas or propane?) Also, conventional heating systems consume indoor heated air and exhaust this out the chimney, which causes a vacuum that is filled by attracting outdoor cold air to infiltrate into the house. Toyotomi direct vent heating systems use outdoor air for combustion by utilizing their unique “pipe-within-a-pipe” forced-flue venting technology warming the incoming outdoor combustion air by the warm outgoing exhausted air, and they are modulating, meaning they maintain the desired temperature by automatically changing burning settings between high, medium and low.

Convenient, Easy to Use 

Toyotomi heaters combine the most advanced technology with the fuel economy, comfort and convenience of direct vent heating. They feature a simplified digital control panel that displays room temperature, temperature settings, time and error codes. With programmable thermostat, these units can remain in operation for up to 24 hours in a reliable, fuel-saving mode.

Clean and Safe 

A permanent mesh filter protects the circulation fan and the inside components from dust. The unit is especially safe for children and pets as its cabinet is cool to the touch. Toyotomi’s “pipe-within-a-pipe” forced flue venting system brings in outside air for combustion while the inner pipe exhausts all combustion by-products to the outside. A circulation fan distributes the heat. The result is smokeless, odorless and clean heating. The unit also features an electric surge protector and shut-off safety system. Toyotomi direct vent heating systems reduce greenhouse emissions substantially more than most conventional oil-fired heating systems. 


Toyotomi’s large circulation fan distributes clean heat quickly and evenly. The unit automatically regulates between low, medium and high burn modes. It turns itself off when the room temperature rises approximately 4 degrees above the desired set temperature. This maintains maximum comfort while increasing efficiency and extending the life of the unit.

Easy Installation 

A Toyotomi heater can easily be installed in just an hour or two. The helpful owner’s manual provides complete, step-by-step instructions. A full range of optional parts and accessories is available to make installation simple.

HEATER DRAWING (1) Unique style wall flue pipe makes venting to dwelling exterior simple and easy. Different length accessories make the Flue Pipe adjustable to different wall thicknesses . A small vent cap is all that shows on the outside.
Part Number: L-530
Fuel Type ASTM D3699 K1 KEROSENE
Heating Efficiency 87% (AFUE Rating)
Heating Rating 22000 BTU/Hr (high)
15000 BTU/Hr (medium)
8000 BTU/Hr (low)
Fuel Consumption 0.165 Gal/Hr (High)
0.113 Gal/Hr (Medium)
0.060 Gal/HR (High)
Size (WxHxD) 19-5/8″ x 23-5/8″ x 16-1/2″
Weight 38 lbs (empty)
Heating Area *   920 Sq. Ft. at (0°F)
1150 Sq. Ft. at (20°F)
Max. Length of
Vent Pipe System
Maximum 10 Ft., 3 bends or less
Electrical Rating 120 Volts AC, 60 Hz
Preheat: 240 Watts
Burning: 40 Wattts
Vent Hole Pipe 2-3/4″ – 3″ Diameter
Type of Tank Exterior Tank

* 0° F Heat Load = 24 BTU/ft²/hr
20° F Heat Load = 20 BTU/ft²/hr
Room size for which this heater is suitable will vary depending on outside temperature, house insulation, window
size and other factors.

  • Compact Size
  • Contemporary Design
  • 4 Burner Modes (including off)
  • Safety “Shut-Off” System
  • Programmable Weekly Timer with up to 30 Different On/Off Intervals
  • Power Failure Recovery (at least 30 Minute Backup for Time)
  • Cool to the Touch Top and Side Panel Cabinet
  • Display Room Temperature, Set Temperature and Error Code
  • Automatic Ignitor Cleaning System
  • Only 2-3/4″ Hole Needed in Wall for Flue Pipe
  • Wisper Quiet Operation
  • Easy Installation as Direct-Vent System requires No Chimney or Special Duct Work
New style wall flue pipe makes venting to dwelling exterior simple and easy.
Completely flexibile, it adjusts to the wall thickness.
A small vent cap is all that shows on the outside.