Understanding Heat Pump Running Costs: What You Need to Know
If you’re thinking about installing a heat pump or already have one at home or work, a common question is: how much does it cost to run? We get it — energy bills matter, especially during those cold Christchurch winters or hot dry summers.
At ACS Air Control Systems, we believe in giving you honest, practical information so you can make the best decision for your space. So, let’s break down the real heat pump running costs, what affects them, and how to keep them low — without losing comfort.
How much does it cost to run a heat pump?
The good news? Heat pumps are some of the most energy efficient systems available today.
According to EECA, running a heat pump in heating mode costs between 3 and 16 cents per kilowatt-hour (kWh) of heat delivered. That’s a whole lot cheaper than electric heaters, which can cost between 19 and 40 cents per kWh.
Why the big difference? Because heat pumps don’t create heat — they move it. For every 1kW of electricity used, a good heat pump can produce 3 to 5kW of heat energy. That’s up to five times more efficient than a standard heater.
What affects heat pump running costs?
Not all homes — or businesses — are the same, and neither are all heat pumps. Your heat pump running costs will depend on a few key things:
- The size and layout of your space: Bigger or open-plan areas need more power.
- Insulation: Well-insulated homes hold heat better, reducing system strain.
- Model and brand: Premium systems like Mitsubishi heat pumps are built for performance and efficiency.
- How you use it: Constant high settings or turning it on/off frequently can increase energy use.
Even the location matters. Christchurch heat pumps need to perform in a climate that swings from frosty mornings to warm afternoons — so choosing a system designed for local conditions is key.
Is it cheaper to run a heat pump all day?
This is one of our most asked questions — and the answer depends on your habits.
Yes, in many cases, it’s more efficient to keep your heat pump running at a steady temperature than to keep turning it off and on. Starting from cold takes more energy than simply maintaining warmth.
However, if you’re leaving the house for several hours, it’s still better to turn it off. A good balance is to use a programmable timer, which many modern systems include. That way, you can set your heat pump to come on just before you wake up or get home.
Some models — including many Mitsubishi heat pumps — even offer Wi-Fi control, so you can adjust settings from your phone.
Tips to keep running costs low
Running your heat pump efficiently doesn’t mean sacrificing comfort. Here are a few smart tips to lower your heat pump running costs:
- Set the temperature between 18–21°C in winter. Every extra degree can increase power use by up to 10%.
- Keep filters clean. Dirty filters make your heat pump work harder.
- Close doors and windows to prevent heat from escaping.
- Use timers to match your daily routine.
- Check insulation — even basic improvements can lower your energy use.
What about defrost mode and winter performance?
On cold mornings, you might notice your heat pump stops blowing warm air for a few minutes. Don’t panic — that’s defrost mode, and it’s normal.
In freezing conditions, the outdoor coil can start to ice up. The system will automatically reverse its cycle briefly to melt the ice. It only lasts a few minutes and helps maintain maximum efficiency.
Regular maintenance helps ensure your heat pump handles winter with ease. At Air Control Systems, we offer servicing that keeps your system in top shape — and your bills under control.
Are there any ongoing costs to consider?
Yes — but they’re low.
Most households spend around $100 per year on maintenance. That includes cleaning filters, checking refrigerant levels, and inspecting the system for wear and tear.
Compare that to the cost of running gas or electric systems, and it’s easy to see why more people are switching to Christchurch heat pumps for long-term savings.
The right system makes all the difference
Choosing the right system isn’t just about the sticker price. It’s about total performance over time — and that’s where we come in.
At ACS Air Control Systems, we match you with climate control solutions that are built for your space. Whether it’s a reliable split system for the lounge or a full heat pump installation across your commercial premises, we design for comfort, efficiency, and savings.
We work with trusted brands like Mitsubishi heat pumps, because we know they’re built to handle New Zealand conditions — and built to last.
Final thoughts
Heat pumps are one of the smartest energy choices you can make — but like any system, their performance depends on how they’re used and maintained. By understanding your heat pump running costs and using simple, energy-smart habits, you can enjoy year-round comfort without the shock of high power bills.
If you’re ready to upgrade or install a system that works for your lifestyle and budget, talk to the local experts.
Talk to ACS Air Control Systems Today
We’ve been helping Canterbury homes and businesses stay comfortable for over 25 years. For honest advice, expert heat pump installation, and support that doesn’t stop after the sale — get in touch with Air Control Systems. We’ll help you choose the right system and show you how to keep your heat pump running costs as low as possible.