Cooling 2 December 2022

Can a Heat Pump Cool in Summer?

Heat Pumps are clever little appliances. Not only can they heat your house, but they can also cool it.

Heat Pumps are the most popular form of fixed heating available in New Zealand. Their dual capability makes them an even better proposition for most Kiwi homes.

Heat Pumps become air conditioners, efficiently cooling your home throughout the warmer months and providing affordable comfort all year round.

Heat pumps, also known as Reverse-Cycle Air Conditioners, are the most advanced and efficient heating and cooling systems available today.

With this highly developed technology, you can keep your home toasty warm in winter and cool in summer.

Basics First - How Do Heat Pumps Work?

Most modern heat pump systems have reverse-cycle technology. This means they have the ability to heat as well as cool your home.

In fact, every heat pump in the Rinnai range offers both heating and cooling options, including High-Wall and Ducted Heat Pump systems.

This would depend on whether you want to control the temperature throughout your entire home or in just a few rooms.

High wall heat pump vs Ducted heat pump

 A More Detailed Look: How Does a Heat Pump Work?

Is A Heat Pump More Efficient In Summer Or Winter? Both!

Whatever the weather is outside, you and your family can relax in comfort every day of the year at a temperature that you choose.

Even if you don’t live in a region where temperatures fluctuate massively across the seasons, it's still good to have a combination of cooling in summer and heating in winter.

Choosing the right heat pump solution will transform your home into a cosy oasis, all day, every day.

Rinnai’s advanced heat pump technology and array of smart features mean that you can also enjoy more than just cooling and heating.

All our heat pumps feature:

  • Temperature control
  • Quality air
  • Cost-savings
  • Sleek contemporary design in every system

Pro series heat pump air conditioner features

How To Save Money Using Your Heat Pump- 4 Simple, Yet Powerful Tips


Effectively cool your home without driving your power bill up, by using the right heat pump settings for summer:

  1. For maximum efficiency, set your thermostat to between 18 C – 22 C.

Your home won't cool down any quicker if you set the temperature lower, but your unit will work a lot harder – meaning you'll be using a lot more power.

  1. Maintain a steady thermostat setting and turn the unit off when it is not required for extended periods of time.

You can also use a timer or Rinnai’s built-in WiFi functionality to turn your unit back on before you get home, so you arrive home to a cool comfortable environment.

  1. Sometimes the heat isn't the problem, it's the humidity.

If you have a dehumidifier setting on your heat pump, try turning it on for half an hour to dry out the air. This can make a big difference in how cool your home feels.

  1. If you have a ducted central heating or cooling system in your home, make sure that the vents are all open.

It may sound counter-intuitive, but if you have closed vents, your air conditioner will have to work harder to keep the air cool, which can push up your energy consumption.

More Money Saving Tips - How to Save on Hot Water

How does a heat pump make cool air?

As the mercury rises, a Rinnai reverse cycle Heat Pump takes in heat from the air inside your home and disperses it outside, leaving your home nice and cool.

Remember, cool air is heavier than warm.

  • For cool air - point the louvers or vanes horizontally or upward.
  • For warm air - point the vanes down so it flows down to the people in your home.

Know Your Heat Pump Better - Learn the Lingo of Heat Pumps Easily

How do I make my heat pump cool better? - Hot tips to keep you cool

This will sound obvious, but only cool the rooms you want.

Have a ducted air conditioning system? Use your zone settings (if available) for more efficiency.

If you have a single-room Hi-Wall Heat Pump system, close the doors between cooled and uncooled rooms to stop warm air seeping in.

When you set your temperature, remember that every 1 degree colder can cost up to 10% extra in energy.

So don’t just set and forget the temperature at an icy level – outside temperatures vary throughout the day and so should the temperature of your Heat Pump.

Liked these tips? Check out more of our helpful guides here.

Browse our range of heating and cooling systems here.



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