Understanding Room
Heating Technologies

Electricity heats the Oil: When you switch on the heater, an electric heating element warms the thermal oil sealed inside the radiator.

Hot Oil transfers Heat: The heated oil circulates within the radiator, transferring heat to the metal fins without being consumed.

Fins warm the room: The heated metal fins release warmth into the surrounding air through natural convection and radiation, gradually increasing room temperature.

Enjoy steady, lasting comfort: The radiator retains heat and continues releasing warmth for some time, even after the heating element switches off.

• Steady warmth: Enjoy consistent heating during extended use.
• Long-lasting heat: Heated oil retains warmth and releases it gradually, even after the element switches off.
• Gentle heating: Experience comfortable warmth UNLIKE the radiant heaters (Quartz, Halogen & Carbon).
• Silent operation: Enjoy peaceful heating without fan noise.
• No exposed heating element: The heating element remains enclosed within the radiator, reducing direct exposure to the heating source.
• Ideal for longer sessions: Well suited for bedrooms, reading, studying and working during cold weather.
• Flexible heating: Adjustable thermostat and heating settings, where provided, help maintain your preferred comfort level.

OFRs Come in 9/11/13 fin Configuration and each OFR is equipped with a PTC fan heater.

Match the fins to your room area:

Room areas are approximate (1 sq m is about 10.8 sq ft). If your room is near the top of a range, or has high ceilings or large windows, choose the next size up.

• ISI Mark Certified: Built to rigorous Indian safety standards.
• Specially Designed Fins: Wave (FS model) and U-shape (FU model) fins offer ~20% better heating efficiency over conventional straight fins.
• Additional PTC Fan Heater (400W): Provides rapid initial warm-up while the oil reaches full thermal saturation.
• Best for Air Humidity: Minimum impact on ambient moisture, keeping air pleasant and breathable.
• Diathermic Oil: High flash point oil ensures efficient thermal transfer and highest user safety.
• Adjustable Power Setting: Rotary knob control with 3 power selections (1000W / 1500W / 2500W).
• Complete Safety Suite: Thermostat temperature control, overheat thermal cutout, and tip-over fall protection switch.
• Convenient Mobility: Handle and smooth castor wheels with 1.75m copper cord and cord winder.
• Asthma Friendly: No dust or pollen agitation when fan is turned off. Zero carbon emissions & no oxygen depletion.
• 2 Year Warranty: Includes Free Home Service across India.

Electricity generates heat: When you switch on the heater, electricity flows through the PTC ceramic element, generating heat.

PTC technology regulates heating: As the ceramic element gets hotter, its electrical resistance increases, reducing the current drawn under constant-voltage conditions and helping regulate its temperature.

Fan drives warm airflow: A fan positioned behind the heating element pushes air across the hot ceramic surface and distributes the warmed air into the room.

Enjoy quick, fan-assisted warmth: The combination of PTC heating and forced convection helps deliver warmth quickly to the surrounding space.

• Quick warmth: Fan-assisted airflow helps distribute warm air soon after switching ON.
• Self-regulating heating element: PTC technology helps regulate the element's temperature as it heats up.
• Effective heat distribution: Forced convection helps circulate warm air throughout the surrounding space.
• Compact design: Convenient for bedrooms, study areas and personal spaces.
• Easy operation: Simple controls make everyday heating convenient.
• Flexible heating: Multiple heating settings, where provided, allow you to adjust the heat output to suit your comfort.
• Added protection: Overheat protection and tip-over protection, where provided, offer additional safety.

• ISI Mark Certified: High standard construction and consumer safety.
• PTC Ceramic Heating Element: Inherent safety and high energy efficiency through dynamic self-regulating resistance.
• Shock Proof Body: Compact and portable rust-proof body with rust-proof front grill for safety.
• 3 Operating Modes: Low Heat, High Heat & Fan Only Mode for seasonal flexibility.
• Adjustable Power Setting: Rotary knob control – 1000W / 1800W.
• Adjustable Thermostat: Precise temperature regulation for consistent indoor comfort.
• 3 Pin ISI Mark Plug of 16A: Ensures reliable high-load safety and grounded circuit protection.
• Thermal Cutout: Automatic overheating protection safeguards against abnormal temperature rises.
• Tip Over Switch for Fall Safety: Heater automatically shuts off instantly when tipped or fallen.
• Ergonomic Handle: Integrated handle designed for effortless room-to-room portability.
• Heavy-Duty Copper Cord: 1.8 m (Effective) long, three core copper cord wire ensuring safety against electric shock & longer life.
• Clean & Healthy Warmth: No oxygen depletion and no carbon emissions.
• 1 Year Warranty: Backed by Usha Free Home Service across India.

Electricity generates heat: When you switch on the heater, electricity flows through the heating element, causing it to heat up.

Heating element warms the air: Cooler air enters the heater and gets warmed as it passes over or around the heating element.

Fan drives airflow: A fan positioned behind the heating element draws in cooler air and pushes it towards and across the heated element.

Warm air circulates: The heated air rises and spreads into the room, while cooler air moves towards the heater, creating a continuous convection cycle.

Enjoy comfortable warmth: The continuous circulation of warm air helps raise the surrounding room temperature for a comfortable indoor environment.

• Uniform room heating: Warm air circulates throughout the space, helping distribute heat beyond the area directly in front of the heater.
• Compact design: Fits conveniently into suitable indoor spaces.
• Easy operation: Simple controls make everyday heating convenient.
• Flexible heating: Adjustable thermostat and heating settings, where provided, help you manage warmth according to your comfort.
• Ideal for daily use: Suitable for bedrooms, study areas and other indoor spaces during cold weather.

• ISI Mark: Certified quality and consumer safety.
• High Quality Nichrome Wire: Heavy-duty heating element for fast and durable heat generation.
• Shock Proof & Rust Proof Body: Compact, resilient housing engineered for long service life.
• Adjustable Power Setting: Rotary knob control with 3 power selections (665W / 1300W / 2000W on HC 423N).
• Adjustable Thermostat: Precise temperature regulation (in model 812T).
• Overheat Thermal Cutout: Comprehensive protection against overheating across all models.
• Ergonomic Portability: Sturdy carry handle and adjustable height stand for angled airflow.
• Heavy-Duty Copper Cord: 1.5m 3-core copper cord wire with 16A ISI plug to prevent electric shock.
• Clean & Safe: Zero carbon emissions and no oxygen depletion.
• 2 Year Warranty: Backed by Free Home Service (HC 443C).

Electricity generates heat: When you switch on the heater, electricity passes through a tungsten filament inside the halogen tube. The filament heats up rapidly and begins to glow.

Infrared radiation delivers warmth: The hot filament emits infrared radiation, which travels through the air and warms your skin and other surfaces it reaches.

Reflectors direct the heat: The reflector behind the heating tubes helps direct radiant heat towards the front of the heater and the intended heating area.

Enjoy quick, focused comfort: The result is warmth that can be felt quickly when you are sitting or standing within effective range of 0.5 meter–1.5 meter (depending upon ambient temperature).

• Quick warmth: Feel the benefit of radiant heat shortly after switching ON the oscillation feature.
• Direct heating: Enjoy warmth directed towards your seating or working area.
• Simple operation: Easy-to-use controls make everyday heating convenient.
• Portable convenience: Compact models can be moved to suitable locations as required.
• Flexible heating: Multiple heating settings, where provided, allow you to adjust the heat output to your comfort.

• ISI Mark Certified: High standard build quality and consumer safety.
• Premium Halogen Tubes: Filled with halogen gas to enhance filament life (1000 ON hours rated).
• Shock Proof & Fire Retardant: Tough plastic exterior with cool-touch body.
• Multiple Power Settings: Model HH4002 (400W & 800W); Model HH4003 (400W, 800W & 1200W).
• Wide Oscillation: Up to 90° motorized sweep (HH4003) for uniform heat coverage across the seating zone.
• Honeycomb Anti-Glare Mesh: Optimizes radiant transmission while minimizing light intensity for visual comfort.
• Tin Reflector: High reflection coefficient directs maximum radiant energy forward.
• Tip-Over Safety Switch: Shuts the heater off instantly if knocked over.
• Asthma Friendly: No fan means no dust or pollen movement in the room.
• Muscle Relaxation: Infrared rays penetrate comfortably into skin for muscle relief.
• 1 Year Warranty: With Free Home Service.

Electricity flows: Current passes through the resistance wire inside the Quartz heating tube.

The element heats up: The wire becomes hot and emits infrared radiation.

Heat travels directly: The infrared energy warms people and objects in its path without first needing to heat all the surrounding air.

The reflector directs heat: A reflector directs more of the radiant heat towards the front of the heater and the intended heating area.

The consumer benefit: Warmth can be felt quickly when sitting or standing within the heater’s effective range of 0.5 meter–1.5 meter (depending upon ambient temperature).

• Instant radiant heat: Immediate warmth without waiting for room air to circulate.
• Inverter friendly: Low power consumption (Per Hour running cost < 5 Rs @ Full Heat Setting of 800W).
• Silent operation: No fan noise, completely noiseless for sleep and quiet study areas.
• Useful for Asthmatic patients: No flow of dust & pollen with air as the product has no fan.
• Muscle relaxation: Emitted infrared radiation penetrates easily into the skin, serving as a soothing muscle relaxant.

• ISI Mark Certified: High standard construction and consumer safety.
• High Quality Quartz Tubes: Nichrome element with terminal joints crimped instead of soldered for longer life.
• Shock Proof Body: Side panels made of Fire Retardant Plastic.
• Inverter Friendly: Operates on 400W & 800W settings via rotary knob.
• Low Power Consumption: Running cost is less than ₹ 5 per hour at full 800W heat setting.
• Tip-Over Switch for Fall Safety: Automatically shuts off immediately if the unit falls.
• Stainless Steel Reflector: Rust proof reflector directs maximum heat forward.
• Powder Coated Safety Grill: Rust proof front grill protects against accidental contact.
• Compact & Portable: Lightweight body with ergonomic carrying handle.
• 1000 ON Hours Rated: Quartz tubes tested for long-lasting continuous performance.
• 1 Year Warranty: Backed by Free Home Service.

Electricity generates heat: When you switch on the heater, electricity passes through the carbon heating elements, causing them to heat up and emit far infrared radiation.

Infrared radiation delivers warmth: The heated carbon elements emit infrared radiation that travels through the air and warms your skin and nearby surfaces directly.

Reflectors direct the heat: The reflector behind the heating elements helps direct radiant heat towards the front of the heater, focusing warmth where it is needed.

Enjoy quick, focused comfort: The result is warmth that can be felt quickly when you are sitting or standing within the heater’s effective range.

• Quick warmth: Feel radiant warmth shortly after switching on the heater.
• Focused heating: Enjoy direct warmth in your seating, reading or working area.
• Soft crimson glow: Experience the gentle, warm glow of carbon heating elements with low visible glare.
• Comfortable heating: Ideal for relaxing, reading or working during chilly weather.
• Portable convenience: Compact models can be moved to suitable locations as required.
• Flexible heating: Multiple heating settings, where provided, allow you to adjust the heat output to suit your comfort.

• ISI Mark Certified: High safety standard compliance.
• High Quality Carbon Tube: Low luminescence high heat carbon tube with minimal glare for visual comfort.
• Shock Proof & Fire Retardant: Tough plastic construction ensures long-term safety.
• Inverter Friendly: 450W & 900W power settings; running cost ~ ₹ 5/hr at full 900W setting.
• Off Timer Function: Up to 60 minutes adjustable timer for automatic convenience.
• Wide 90° Oscillation: Motorized rotation delivers wide area heat distribution.
• Diamond Cut Aluminum Reflector: Specially treated surface provides rapid, even heat projection.
• Tip-Over Fall Protection: Integrated tilt switch automatically shuts the unit off if it falls.
• 2.0m Long ISI Copper Cord: Extended reach 3-core copper cord wire with 6A small plug.
• Asthma & Allergy Friendly: Operates silently without fans, preventing circulation of airborne dust.
• Muscle Relaxant Benefit: Far infrared rays penetrate skin comfortably to aid relaxation.
• 1 Year Warranty: Backed by Free Home Service.