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With energy costs on everyone’s mind, finding energy efficient heaters that strike a balance between keeping you warm and keeping bills down can be a real game-changer. While all electric resistance heaters (ceramic, oil, radiant, convector, fan) are essentially 100% efficient at converting electricity into heat, some options are better than others when it comes to how they use that energy, especially if you’re mindful of usage patterns. Below, we’ll delve into the best ways to stay toasty in New Zealand’s cooler months without seeing your power bill skyrocket.
Choosing the right KW heater ensures your room heats up efficiently without wasting electricity. A heater that's too small will struggle to warm the space, while one that's too large will unnecessarily increase your energy bills.
Measure your room (length × width × height) to find the volume.
Allow about 44 watts per cubic metre of room volume.
Add 10% if your room has large windows. Add another 10–20% if your room has partial or no insulation.
For a bedroom, multiply by 1.2, for a lounge, multiply by 1.5, for smaller areas multiply by 0.8.
Example:
A well-insulated bedroom 3.2m × 3m × 2.4m high = 23.04 cubic metres. Multiply by 44 to get 1013 watts, then by 1.2 for bedroom = 1216 watts (1.2 KW).
Heat pumps are widely recognised as one of the most energy-efficient ways to heat your home and are the most low cost energy efficient heaters for large rooms. They work by extracting heat from outside air and transferring it indoors, making them significantly more efficient than conventional electric heaters. However, despite their advantages, installing a heat pump isn't always feasible for everyone. Factors such as rental restrictions, the high initial installation cost, home layout, and building constraints can limit your options. If you fall into this category, there are still excellent electric heater alternatives available that provide warmth effectively while keeping running costs manageable.
This guide focuses on those practical alternatives, helping you choose the best electric heater type to match your space, usage patterns, and budget, ensuring you stay warm without overspending on electricity.
Saving on bills:
Rather than cycling it on and off, set the built-in thermostat to a moderate temperature (roughly 18–20°C) and let it run steadily. This gentle, continuous heat uses less energy than blasting a room hot, turning the heater off, and repeating the process. Briscoes offers various oil heaters with digital controls. Perfect for fuss-free, cost-effective warming.
Ceramic Heaters
Radiant Heaters
Saving on Bills:
Use them only when you’re in the room. They lose much of their cost-effectiveness if left on when nobody’s around. Briscoes has compact ceramic and radiant heaters with thermostats and timers for better energy control.
Convector Heaters
Fan Heaters
Saving on Bills:
These are best for quick fixes, like warming a chilly bathroom or a study for a short time. If you’re running them for hours, you’ll notice it on your next electricity bill. Instead, limit usage to when you need immediate heat, then switch them off once the room is comfortable. Check out Briscoes’ range of fan heaters and convector heaters.
Ideal for winter nights: An electric blanket can be a real luxury when the temperature dips.
Pro Tip:
Look for electric blankets at Briscoes that feature timers or dual controls, so each side of the bed can be set to a personal preference. This targeted approach to heating drastically reduces power consumption compared to heating a large room.
Layer up: The simplest way to stay warm without ramping up power usage? Put on cosy socks, a jumper, or snuggle up under a thick blanket.
Lowest Ongoing Cost: Electric Blankets
Best heater for bedroom: Oil Heaters
Short-Burst, Focused Heating: Ceramic or Radiant Heaters
Occasional Rapid Heating: Fan Heaters
Convector Heaters
Keeping cosy shouldn’t mean dreading your next power bill. The key is choosing the heater (or blanket!) that suits both your lifestyle and your space. At Briscoes, you’ll find a wide array of oil heaters, ceramic heaters, radiant models, fan and convector options, and of course, electric blankets. Chat with our team in-store or browse online to compare different specs and styles before making your choice.
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