Electric Radiator Wattage Calculator

Determine the correct wattage for your electric radiator by entering your room details below.

List of the Top 10 Best Electric Radiator:

# Image Product Link
1 Dreo Oil Filled Radiator, Electric Radiant Heaters for indoor use Large Room with Remote Control, Child Lock, 4 Modes, Overheat & Tip-Over Protection, 24h Timer, Digital Thermostat, Quiet, 1500W Dreo Oil Filled Radiator, Electric Radiant Heaters for indoor use Large Room with Remote Control, Child Lock, 4 Modes, Overheat & Tip-Over Protection, 24h Timer, Digital Thermostat, Quiet, 1500W View on Amazon
2 PELONIS Champagne Oil Filled Radiator Heater with Remote and Thermostat, 5 Temperature Settings for indoor use Large Room, Energy Efficient Electric Space heater with Safety Features PELONIS Champagne Oil Filled Radiator Heater with Remote and Thermostat, 5 Temperature Settings for indoor use Large Room, Energy Efficient Electric Space heater with Safety Features View on Amazon
3 Amazon Basics Oil Space Heater, Portable Radiator Heater with 7 Oil-Filled Fins for Indoor Use, 3 Heat Settings, Thermostat, Tip-Over Protection, ETL Safety Certificate, Manual Control, 1500W, Black Amazon Basics Oil Space Heater, Portable Radiator Heater with 7 Oil-Filled Fins for Indoor Use, 3 Heat Settings, Thermostat, Tip-Over Protection, ETL Safety Certificate, Manual Control, 1500W, Black View on Amazon
4 Amazon Basics Oil Heater, Radiator Heater for Indoor Use, With Over-Heat Protection, 7 Oil-Filled Steel Fins, 3 Heat Settings, ETL-certified Safety, 1500W, White, 11 Amazon Basics Oil Heater, Radiator Heater for Indoor Use, With Over-Heat Protection, 7 Oil-Filled Steel Fins, 3 Heat Settings, ETL-certified Safety, 1500W, White, 11"D x 14.8"W x 25.2"H View on Amazon
5 Dreo Oil Filled Radiator Heater, Electric Radiant Heater with Remote Control, 4 Modes, Overheat & Tip-Over Protection, 24h Timer, Digital Thermostat, Quiet Space Heater for Indoor Use Large Room Dreo Oil Filled Radiator Heater, Electric Radiant Heater with Remote Control, 4 Modes, Overheat & Tip-Over Protection, 24h Timer, Digital Thermostat, Quiet Space Heater for Indoor Use Large Room View on Amazon
6 Kismile Portable Electric Radiator Heater, Oil Filled with 3 Heat Settings, Adjustable Thermostat, Overheat & Tip-Over Protection For Indoor Use, 1500W (Black) Kismile Portable Electric Radiator Heater, Oil Filled with 3 Heat Settings, Adjustable Thermostat, Overheat & Tip-Over Protection For Indoor Use, 1500W (Black) View on Amazon
7 Dreo Radiator Heater, 8 Safety Protection Oil Filled Radiator Heater for Indoor Use, 1500W Electric Heaters for Large Room, 8 Fins, with Remote, 4 Modes, Digital Thermostat, 24H Timer, Quiet Dreo Radiator Heater, 8 Safety Protection Oil Filled Radiator Heater for Indoor Use, 1500W Electric Heaters for Large Room, 8 Fins, with Remote, 4 Modes, Digital Thermostat, 24H Timer, Quiet View on Amazon
8 De'Longhi Dragon Digital Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, programmable timer, Energy Saving, full room heater with safety features TRD40615E De'Longhi Dragon Digital Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, programmable timer, Energy Saving, full room heater with safety features TRD40615E View on Amazon
9 Comfort Zone Oil-Filled Radiator Space Heater, Radiant, Electric, Never Refill, Adjustable Thermostat, Tip-Over Switch & Overheat Protection System, Ideal for Home, Bedroom, & Office, 1,500W, CZ8008N Comfort Zone Oil-Filled Radiator Space Heater, Radiant, Electric, Never Refill, Adjustable Thermostat, Tip-Over Switch & Overheat Protection System, Ideal for Home, Bedroom, & Office, 1,500W, CZ8008N View on Amazon
10 De'Longhi Dragon Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, portable room heater, programmable timer, full room heater with safety features, TRD40615T De'Longhi Dragon Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, portable room heater, programmable timer, full room heater with safety features, TRD40615T View on Amazon

Understanding Electric Radiator Wattage

Electric radiators are sized based on the room they are heating, the insulation level, and the desired temperature. By calculating the correct wattage, you ensure your heater runs efficiently and effectively, providing you with optimal comfort.

Factors Affecting Radiator Wattage

Factor Description Impact on Wattage
Room Size The larger the room, the more wattage is needed to heat it. Larger rooms require more wattage.
Insulation How well your room is insulated affects heat retention. Better insulation reduces wattage needed.
Outside Temperature The colder the outside temperature, the more wattage required to heat the room. Lower outside temperatures increase wattage needs.

How to Estimate the Wattage Required

The basic formula for estimating the wattage required is:

Wattage (W) = Room Volume (ft³) × Temperature Difference × Insulation Factor

Where:

  • Room Volume (ft³): Length × Width × Height of the room
  • Temperature Difference: Desired temperature - Outside temperature
  • Insulation Factor: Low (1.5), Medium (1.2), High (1.0)

Recommended Wattage for Different Room Sizes

Room Size Wattage Needed
Small Room (up to 100 sq ft) 500 - 750 W
Medium Room (100-200 sq ft) 750 - 1500 W
Large Room (200+ sq ft) 1500 - 2000 W

Choosing the Right Heater Size

It's important to choose a radiator that matches the calculated wattage. Using a radiator with too low wattage may lead to insufficient heating, while a too-large radiator can lead to overheating and unnecessary energy consumption.

Maintenance and Efficiency Tips

  • Regular Cleaning: Dust and dirt can reduce heater efficiency. Clean your electric radiator regularly.
  • Proper Placement: Ensure that the heater is placed in an open area to allow efficient airflow.
  • Use Thermostats: A thermostat will help regulate room temperature and save energy by switching the heater off when the desired temperature is reached.