If you live in Canterbury and want better control over your home or business temperature — without the high running costs — then understanding how does a heat pump work is the first step.
A heat pump is more than just a heater or a cooler — it’s a complete climate control solution. At ACS Air Control Systems, we’ve been installing and servicing heat pumps across Christchurch for over 25 years. We know what works in our ever-changing climate — and more importantly, we know what works for our customers.
This guide will walk you through how heat pumps function, why they’re so efficient, the different systems available, and how the right system can transform your home or business.
What is a heat pump and how does it work?
A heat pump works by transferring heat — not generating it.
In winter, it pulls warmth from the outside air and transfers it inside to heat your space. In summer, the process reverses — extracting heat from inside and pushing it outdoors. This is done through a refrigeration cycle using a compressor, refrigerant, and coils.
So how does a heat pump work in practical terms? Imagine a fridge in reverse. Instead of removing heat to cool your milk, it brings in heat to warm your living room — and then flips the process when you need to cool off.
This ability to both heat and cool makes heat pumps ideal for year-round use. And because the system moves heat rather than creating it, it uses far less energy to do so — making it one of the smartest, most energy efficient systems available.
Why heat pumps are so energy efficient
Traditional heating systems like electric heaters or gas furnaces burn energy to produce heat. In contrast, a heat pump moves existing heat using a small amount of electricity. For every kilowatt of power consumed, a heat pump can deliver up to three kilowatts of heating or cooling output.
That’s why properly installed Christchurch heat pumps can dramatically reduce your energy bills — especially in homes or businesses that previously relied on older, less efficient systems.
And with power prices continuing to rise, investing in a system that runs smarter just makes sense.
Types of heat pump systems
At ACS Air Control Systems, we design solutions around your space — not the other way around. Whether you’re living in a compact townhouse or running a busy retail shop, we’ll match you with the right setup from the start.
Here are the most common types of heat pump systems we supply and install across Canterbury.
Split Systems
Split systems are the most common and cost-effective option. They consist of one indoor unit and one outdoor compressor. These are ideal for single rooms, open-plan living areas, or small commercial spaces.
They’re simple to install and give you precise control over individual zones. If you’re new to heat pump installation, this is often the best place to start.
Hi-Wall Systems
Hi-wall heat pumps are mounted high on your wall, allowing for strong airflow and even temperature distribution. They’re sleek, quiet, and efficient — perfect for bedrooms, lounges, or offices.
These are among the most popular Christchurch heat pumps, thanks to their performance in our climate and their ability to blend into modern interiors.
Floor-Mounted Systems
Floor-mounted heat pumps sit low on the wall and push warmth up from ground level, making them ideal for older homes, villas, or rooms with limited wall space. They provide fast, even heating and are especially effective in colder months.
If your home has large windows, heritage features, or restricted ceiling height, this system provides a practical and powerful solution.
Ducted Systems
For seamless, whole-home comfort, ducted heat pump systems are the premium choice. A central unit distributes air through ducts to vents in each room, delivering even temperatures without visible indoor units.
Ducted heat pumps are quiet, discreet, and give you centralised control over your home or office environment. They’re perfect for new builds, renovations, or commercial fitouts where aesthetics and performance matter.
Residential Heat Pumps
For many families in Christchurch, residential heat pumps are more than a comfort upgrade — they’re a health and lifestyle investment.
Modern systems go beyond heating and cooling. They also filter the air, remove allergens like pollen and dust, and regulate humidity. That means fewer asthma triggers, less condensation, and a healthier environment for kids and adults alike.
Whether you need a single hi-wall unit in the living room or a full ducted system, we customise every installation to suit your home’s layout, insulation, and the way your family lives.
We install only trusted brands like Mitsubishi heat pumps, proven to perform in New Zealand’s unique climate. Many models include advanced filtration systems to capture airborne particles, bacteria, and allergens — ideal for families dealing with seasonal allergies or damp homes.
From the first quote to final installation and follow-up support, ACS makes the process straightforward — no hidden costs, no guesswork, just honest advice and high-quality service.
Commercial Heat Pumps
In business, comfort affects performance.
Whether you run an office, a retail space, a clinic, or a café — the right indoor climate influences how well your team works, how long your customers stay, and how much energy you spend keeping the place running.
Our commercial heat pumps help:
- Improve employee productivity by keeping working environments comfortable and consistent.
- Create better customer experiences, encouraging people to stay longer and return more often.
- Lower operational costs with systems that deliver high output without overloading your power bill.
- Reduce maintenance downtime, thanks to reliable systems from top brands like Mitsubishi heat pumps.
Every commercial space is different. That’s why we design systems based on your layout, insulation, usage hours, and ambient noise needs. Whether you need a high-capacity ducted heat pump or multiple split systems across different work zones, we’ll build a solution that keeps your business running without interruption.
Our team works efficiently, with minimal disruption, and always to code. We get in, get the job done, and back you up with expert service and support.
How does a heat pump water heater work?
A heat pump water heater uses the same core technology as a traditional heat pump — but instead of heating air, it heats water.
It pulls heat from the surrounding air, compresses it, and transfers it to the water stored in a cylinder. This method is incredibly efficient — using up to 70% less electricity than a standard electric water heater.
For families or businesses with high hot water demand, it’s a smart, energy-saving upgrade that pays off long term.
Why choose ACS Air Control Systems
At ACS Air Control Systems, we’re not just installers — we’re trusted advisors for homeowners and business owners who want systems that work, last, and make a real difference.
With 25+ years of hands-on experience in heat pump installation across Christchurch, we’ve built our reputation on honest advice, expert workmanship, and reliable support. We don’t push products — we recommend solutions that suit your space, your needs, and your budget.
We work with proven brands like Mitsubishi heat pumps, and we back our work with warranties and aftercare you can actually count on.
If you’re ready to take control of your indoor climate, talk to the team who knows how to deliver.
Contact us today
Looking for tailored advice on your home or business heat pump setup? Book a consultation with ACS and get expert guidance, fast quotes, and a solution built for Canterbury conditions.