What to think about when buying Heat Pumps
Buying a heat pump is one of the smartest investments you can make for your home or business — but it’s not as simple as picking the first model you see. Heat pumps come in a wide range of types, sizes, and brands, and getting the right one can mean the difference between years of quiet, efficient comfort and an energy-hungry system that never quite does the job.
At ACS Air Control Systems, we’ve been helping Cantabrians make the right choice for over 25 years. Whether you’re heating a family home in Christchurch or cooling a commercial space in Rolleston, this guide will walk you through everything you need to consider when buying a heat pump.
Why Choose a Heat Pump at All?
If you’re still deciding between a heat pump and another form of heating, here’s the bottom line: heat pumps are more efficient, cleaner, and more versatile than plug-in heaters or gas systems.
A good system will:
- Heat and cool your space efficiently
- Filter the air, removing dust and allergens
- Dehumidify, helping reduce mould and dampness
- Lower your power bills, compared to electric or gas heating
And with no gas connection fees, no firewood to stack, and no fumes, heat pumps are a clean, long-term solution that works all year round.
What to Consider When Buying a Heat Pump
- Room Size and Layout
Bigger isn’t always better. If your heat pump is too large, it’ll cycle on and off too often, wasting energy. Too small, and it won’t heat the room properly.
Our team at Air Control Systems will assess your space — including floor area, insulation, ceiling height, and room orientation — to recommend the right size.
As a rough guide:
- 10–20 m²: 2–2.5kW
- 20–35 m²: 3–5kW
- 35–60 m²: 5–7kW
- 60 m² and above: 8–10kW+
- Type of System
There are three main types of Christchurch heat pumps commonly used in homes and businesses.
Split Systems
The most common setup in New Zealand. One outdoor unit is connected to one indoor unit, usually mounted high on a wall. Great for single rooms or open-plan spaces.
Multi-Split Systems
One outdoor unit connects to multiple indoor units in different rooms. Ideal for heating or cooling several areas independently.
Ducted Systems
A single central unit delivers air through ducts to multiple rooms. The most discreet and effective option for whole-home comfort, though installation is more involved.
Our team specialises in all types of heat pump installation, and we’ll help you choose the best system for your space and your budget.
- Indoor Unit Placement
Where your indoor unit goes matters. Poor placement can lead to cold spots, noise issues, or reduced efficiency.
- Hi-wall units: Best for even airflow in open areas
- Floor-mounted units: Ideal for older homes or high ceilings
- Ceiling-mounted units: Useful when wall space is limited
We’ll walk you through the pros and cons based on your layout.
- Brand and Efficiency
Not all heat pumps are created equal. When buying a heat pump, choose a brand with a strong reputation for performance and durability.
We recommend Mitsubishi heat pumps, known for their quiet operation, excellent efficiency ratings, and suitability for New Zealand’s climate.
Look for models with:
- High COP (coefficient of performance) for heating
- High EER (energy efficiency ratio) for cooling
- Energy Rating Labels with more stars = more savings
More efficient systems mean lower heat pump running costs over the long term.
- Smart Features
Many modern energy efficient systems include smart technology like WiFi control, programmable timers, and advanced air filtration. These features can make a big difference in day-to-day comfort and convenience.
With WiFi, you can pre-heat your home before you arrive or switch off the system remotely if you forget. It’s a small upgrade that pays off quickly.
- Running Costs and Maintenance
A properly chosen and installed system will cost far less to run than traditional heating. Most Kiwi homes spend 3 to 16 cents per kWh to run a heat pump. Compare that with 19 to 40 cents per kWh for electric heaters.
To keep costs down:
- Clean your filters every 1–2 months
- Book annual servicing (around $100 per year)
- Use timers to avoid running the unit unnecessarily
Our team at ACS Air Control Systems provides ongoing support after installation to help you keep your unit running efficiently for years to come.
- Installation Quality
Even the best heat pump won’t perform well if it’s installed poorly. Proper pipework, drainage, electrical wiring, and airflow planning all matter. That’s why choosing an experienced installer is just as important as choosing the right unit.
At ACS, we don’t offer one-size-fits-all packages. Every install is customised — from homes in Cashmere to commercial buildings in Rangiora.
Why Work with Air Control Systems?
When you’re buying a heat pump, you don’t just want a machine — you want a climate solution that works for your lifestyle, your space, and your budget.
We’ve been serving Canterbury for over two decades, providing honest advice, expert installation, and reliable aftercare. Whether you’re heating one room or the whole house, we’ll help you navigate every decision with confidence.
We only install trusted brands like Mitsubishi heat pumps, and we offer tailored climate control solutions that are built to last.
Thinking About Buying a Heat Pump? Talk to Us First.
Let’s make sure you get it right the first time. Contact ACS Air Control Systems for expert advice, custom quotes, and professional heat pump installation across Christchurch and Canterbury.
