7 Money Saving Hacks Kiwis Are Using to Beat the Winter Power Bill Crisis
Winter power bills are hitting Kiwi households like a sledgehammer this year, with electricity prices soaring 15-20% across most providers. While energy companies post record profits, ordinary New Zealanders are choosing between heating and eating.
The cost of living crisis has turned winter power bills into a financial nightmare for thousands of households. But savvy Kiwis are fighting back with clever money saving hacks that can slash hundreds off their winter electricity costs. Here’s how the smartest households are beating the system.
Winter heating cost savings at a glance
1. The 18-Degree Rule That Saves $300+ Per Winter
Most Kiwis are heating their homes to 21-22 degrees without realising they’re burning money. Drop your thermostat to 18 degrees and you’ll cut heating costs by up to 30%. Yes, you’ll need an extra layer, but your wallet will thank you.

Smart households are going further – heating only the rooms they’re using. Close doors, use draft stoppers, and heat one room properly rather than the whole house poorly. It’s uncomfortable for about three days, then it becomes normal.
The math is brutal but effective: every degree you drop saves roughly 10% on heating costs. In a typical winter, that’s $50-80 per degree per month for most households.
2. Off-Peak Timing Tricks That Power Companies Hate
Most electricity retailers offer cheaper rates between 9pm-7am, but they don’t exactly advertise it. Smart Kiwis are shifting their power-hungry activities to these windows and saving 20-40% on usage costs.
Run your dishwasher, washing machine, and dryer overnight. Charge devices during off-peak hours. Some households are even using timer switches to automatically shift non-essential appliances to cheaper time slots.
The really clever ones are heating water during off-peak hours only, using a timer on their hot water cylinder. It’s a $50 investment that saves $200+ per winter for most families.
3. The Heat Pump vs Heater Reality Check
Fan heaters, oil heaters, and bar heaters are electricity vampires. A 2400W fan heater costs about $1.20 per hour to run. Use it for four hours daily and you’re looking at $144 per month just for one room.
Heat pumps use roughly one-third the electricity for the same heat output. Even a cheap $800 heat pump pays for itself within two winters compared to portable heaters. But here’s the kicker – most Kiwis could rent a heat pump for less than they’re spending on inefficient heating.
According to EECA, the average household could save $500-800 per winter by switching from portable heaters to a properly sized heat pump.
4. Window Insulation That Costs $20 But Saves $200
Single-glazed windows are basically holes in your wall during winter. Thermal curtains help, but window insulation film creates a cheap double-glazing effect that can cut heat loss by 50%.
You can buy window insulation kits from Bunnings for $15-25 per window. It looks like glad wrap but creates an insulating air gap. Installation takes 30 minutes per window with a hair dryer.
Most households see 10-15% reductions in heating costs after installing window film throughout their home. For a typical winter power bill, that’s $150-250 in savings from a $100 investment.
5. The Appliance Audit That Finds Hidden Money Drains
Your second fridge in the garage, that old freezer in the shed, the fish tank heater you forgot about – these phantom loads are costing serious money. Old appliances can use double or triple the electricity of modern equivalents.
Do a brutal appliance audit. If you’re not using it daily, unplug it. That spare fridge might be costing $300+ per year to run. The old heat transfer ventilation system you never turn off could be adding $200 to winter bills.
Smart plugs with energy monitoring can identify the worst offenders. Most households find 2-3 appliances they had no idea were costing them hundreds annually.
6. Hot Water Cylinder Hacks Your Installer Won’t Tell You
Hot water heating accounts for 30-40% of most power bills, but simple cylinder tweaks can cut this dramatically. Wrap your cylinder in an insulation blanket ($40 from hardware stores) to reduce heat loss by 25%.
Drop your cylinder temperature from 60 to 55 degrees – you won’t notice the difference but you’ll save 8-10% on hot water costs. Install low-flow showerheads and tap aerators to use less hot water without sacrificing pressure.
The biggest hack: put your cylinder on a timer. Heat water for 2-3 hours in the morning and evening only. Most families find they still have plenty of hot water but cut heating costs by 40%.
7. Switching Providers – But Doing It Smart
Everyone knows about switching power companies, but most Kiwis do it wrong. They focus on unit rates instead of total monthly costs including fixed charges. Some “cheap” providers have higher daily charges that wipe out any unit rate savings.
Use the Powerswitch calculator but don’t just pick the cheapest. Look for providers offering winter discounts, payment incentives, or bundled deals. Some offer free power hours or loyalty credits that aren’t factored into comparison sites.
The smartest switchers negotiate. Call your current provider’s retention team before switching and ask what deals they can offer to keep you. Many will match or beat competitor rates rather than lose customers.
These money saving hacks won’t solve the fundamental problem of electricity price gouging, but they can put hundreds of dollars back in your pocket this winter. The power companies are making record profits while Kiwis choose between heating and eating – it’s time to fight back with every trick available.