King Electric K Series 6K1215
#8 in BaseboardFull review
A sturdy 6 ft, 1,500 W contractor baseboard for 120 V. The short warranty and the higher price per watt hold it back.
Amazon $209$209
The King Electric K Series 6K1215 is the better baseboard or wall heater overall, rated 2.7 to 2.7. The King Electric K Series 4K1210 costs $50 less ($159 vs $209).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
King Electric K Series 4K1210
#9 in BaseboardFull review
A sturdy 4 ft, 1,000 W contractor baseboard for 120 V. The short warranty and the higher price per watt hold it back.
Amazon $159$159
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every baseboard baseboard or wall heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | King Electric K Series 6K1215 | King Electric K Series 4K1210 |
|---|---|---|
| Overall rating | 2.7/5 | 2.7/5 |
| Value 35% | 56 $139.33 per kW ($209, 1,500 W) | 49 $159 per kW ($159, 1,000 W) |
| Controls 25% | 20 optional built-in thermostat kit | 20 optional built-in thermostat kit |
| Safety 15% | 75 full-length overheat cutout | 75 full-length overheat cutout |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| King Electric K Series 6K1215 | King Electric K Series 4K1210 | |
|---|---|---|
| Heat | ||
| Type | Convection baseboard | Convection baseboard |
| Rated output | 1,500 W | 1,000 W |
| Voltage | 120 V | 120 V |
| Length | 72 in | 48 in |
| Output per foot | 250 W/ft | 250 W/ft |
| Heating element | Aluminum ribbon fin element | Aluminum ribbon fin element |
| Controls | ||
| Thermostat | Optional built-in kit | Optional built-in kit |
| Selectable wattage | No | No |
| Remote or timer | No | No |
| Safety | ||
| Overheat cutout | Yes | Yes |
| Full-length limit | Yes | Yes |
| Build | ||
| Weight | 15 lb | 10.5 lb |
| Warranty | 1 year | 1 year |