King Electric K Series 4K1210

Last updated: November 9, 2026

King Electric K Series 4K1210
2.7/5#9 of 10 in baseboard baseboard heaters
2.7

A sturdy 4 ft, 1,000 W contractor baseboard for 120 V. The short warranty and the higher price per watt hold it back.

  • 1,000 WOutput
  • 120 VVoltage
  • Optional built-in kitThermostat
  • 1 yearWarranty
Check price at Amazon$159

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Made in the USA with a crushproof element and a dent-resistant cover
  • Full-length safety cutout
  • Runs on a 120 V circuit
Cons
  • Only a one-year warranty, element included
  • Costs more than a Cadet baseboard of the same output
  • Needs a wall thermostat or a separate built-in kit

The King Electric K Series family

Every King Electric K Series model we rank, smallest first. Ratings compare each against its own type.

ModelOutputRatingPrice
King Electric K Series 3K2407750 W2.6/5$129
King Electric K Series 4K1210 (this one)1,000 W2.7/5$159
King Electric K Series 6K12151,500 W2.7/5$209

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model number4K1210-BW
Heat
TypeConvection baseboard
Rated output1,000 W
Voltage120 V
Length48 in
Output per foot250 W/ft
Heating elementAluminum ribbon fin element
Controls
ThermostatOptional built-in kit
Selectable wattageNo
Remote or timerNo
Safety
Overheat cutoutYes
Full-length limitYes
Build
Weight10.5 lb
Warranty1 year

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