We tested eight brands of room heaters with
fan as per the specifications set by the Bureau of Indian Standards
(BIS).
Hot Air Output
Bajaj
registered the highest temperature rise — 15.75°C at
heat setting 1 and 23.17°C at heat setting 2 (at ambient temperature
of 27°C). The lowest temperature rise at heat setting 1 was
in Black & Decker
at 7.5°C and that in heat setting 2 was in ABC
at 14.54°C.
Thermal cut-out (a safety device) did not function
in Orpat, Omax
and Black & Decker.
Thermostat
Thermostat (a temperature sensor) was absent
in Usha (FH423N), Omax, Orpat
(ORH-9007-DX), and ABC.
It did not function in Greenline.
Orpat includes electronic circuit. It can
be operated using re-mote control and timer is provided for setting
of working hours up to 7½.
Input
Orpat
failed in the test of input since the actual wattage consumed
was 1700 W against the rated wattage of 2000 W.
Cord Length
Except Bajaj,
all brands failed to meet the requirement for cord length. The
seven failing brands had cord length less than the specified 2
metres.
Shock
ABC
failed to meet the requirement of protection against electric
shock as live parts were accessible from the front grill of the
heater which could lead to electric shock to the user. In the
case of Orpat
plug housing is provided for fixing the plug when the heater is
not in use. However, when the plug is not fixed this portion remains
open in the absence of a flap. Through this opening, insects may
enter and cause short circuit.
Finish
Omax
failed in finish test with a part of the inner assembly rusted.
Rusting may lead to short circuit.
Price
The price varied quite a bit ranging from
Rs 690 (Omax)
to Rs 1,850 (Greenline).
Most of the prices lay in the Rs 1,500 to Rs 1,800 range.
Greenline
is provided with a swing angle of 90° (oscillating facility).
Energy Consumption
The energy consumed in kilowatt hour was
the lowest in Greenline
at 1.548 KWH and highest in Bajaj
at 2.051 KWH.
Marking
Except for Orpat
and ABC
the marking information on the other brands was printed on paper
which was glued to the heater. This can get easily removed. Instruction
manual was not provided by Omax,
Orpat and ABC.