Energy Conservation Center, Japan / Evaluation Criteria for Machinery and Appliances / Space Heaters

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12. Space Heaters

1) Target Scope:

Restricted to those using gas or oil as fuel. Unvented types, space heaters using gases other than those in the group of city gas 13A and liquefied petroleum gas as fuel, vented gas space heaters, vented oil space heaters with maximum fuel consumption of over 4.0l/h, and direct vent type oil space heaters with maximum fuel consumption of over 2.75l/h are excluded.

2) Energy Consumption Efficiency:

Energy consumption efficiency is heat efficiency (%) measured in the manner stipulated by JIS S2122 or S3031.

3) Category and Target Values:

Gas space heaters

Category	Standard energy consumption efficiency
Direct vent type	82.0

Oil space heaters

Category			Standard energy consumption efficiency or its calculation formula
Air supply and exhaust type	Heat transfer type	Category name
Direct vent type	Natural convection type	A	83.5
Direct vent type	Forced convection type	B	86.0
Vented type	Radiating type	C	69.0
	Non-radiating types with maximum fuel consumption of 1.5 liters per hour or less	D	67.0
	Non-radiating types with maximum fuel consumption of more than 1.5 liters per hour	E	E = -3.0L + 71.5

Remarks:

E and L shall express the following numeric values.
E: Standard energy consumption efficiency (unit: percent)
L: Maximum fuel consumption (unit: liters per hour)

4) Target Fiscal Year:

2006

5) Energy Conservation Effects:

An improvement in efficiency of approximately 1.4% for gas space heaters and 3.8% for oil space heaters compared to 2000 levels by 2006.

6) Display Items:

Product name or type, category (restricted to oil space heaters), maximum fuel consumption (restricted to non-radiation types among vented type oil space heaters whose maximum fuel consumption is over 1.5l/h), energy consumption efficiency, manufacturer's name

7) Place of Display:

Catalogues and product bodies that provide performance data.

8) Exemption:

Manufacturers or importers that ship fewer than 300 units in total are excluded, but display obligations must be met regardless of the number of units shipped.

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