Did you hear our radio ad? Click here to find out if you're eligible to save up to 96% on home insulation 

Chris on heat pumps features made easy

November 30, 2017

Chris on heat pumps features made easy

How can I keep my home temperature healthy? What’s easiest? What’s cheapest? What’s environmentally friendliest? What does the techno-lingo mean?

More people now know that homes need to be kept 18-20 degrees to be healthy, but not everyone knows how heat pumps can maintain temperatures without costing the earth.

Here’s a quick rundown of what some of the latest technologies and features are, and what the lingo means. Hopefully this will make it easier for you to choose a model that will keep you comfortable, with low energy use, environmental impact and bills.

Human sensors

This man vs. machine is a total win for man. Human activity sensors can monitor human body locations in a room, including movements and absences. Energy and heat automatically adjust to human activity, such as increasing cooling settings when a room is full (of warm bodies), or turning off when the room is empty. This auto-adjustment keeps energy use (and power bills) to a minimum.

Sunlight sensors

The sun is our most valuable (free) source of heat, and it can really affect the temperature inside a room with heat transfer through walls and windows. Sunlight sensors auto-detect heat and adjust to increase/decrease temperature to make the most of this free resource, whether it’s overcast and cool, sunny and warm, day or night.  


Using wi-fi you can control your heat pump remotely, from your sofa, elsewhere in your home or even out and about. This feature is great if you’ve forgotten to use your pre-programmable settings or when things change – such as Wellington weather, or your own plans! Now commonly available as an add-on or built-in to certain models.

Air filtration

Filtration systems can help to remove unwanted particles from the air, such as bacteria and mould spores. Some systems and filters can de-activate up to 99% of bacteria and viruses, plus deodorise bad smells. Some models are accredited by Asthma NZ.    


Historically, the most widely used heat pump refrigerant in New Zealand was HCFC-22 (known as R22). This has a moderately high greenhouse warming potential (GWP) and low ozone depletion level (ODP). As part of the Montreal Protocol the NZ government is phasing out HCFCs, so since January 2015 more refrigerants with less environmental impacts have become available. We are comfortable that R32 is a good choice refrigerant currently and it's used in two heat pumps we sell - the Panasonic Aero series and Fujitsu E3.

If you'd like to know more then get in touch to book a free home assessment or browse energy-efficient heat pumps that we supply and install online. 

Thanks and stay comfortable,


Also in Ask an expert

Home insulation: 7 tips on how to choose an insulation installer
Home insulation: 7 tips on how to choose an insulation installer

March 07, 2019

With summer behind us, it’s time for the third blog post in our series helping our community be more informed about home insulation – this time, we’re helping you know what to look out for when choosing an insulation provider.

Continue Reading

How much can I save by switching to LED downlights in my home?
How much can I save by switching to LED downlights in my home?

October 10, 2018

Lighting costs the average Kiwi household $220 per year – roughly 12 percent of its electricity bill. As LEDs use up to 85% less energy, installing LED downlights can mean a substantial saving for families around NZ. Find out more here.

Continue Reading

How can you Bee Aware?
How can you Bee Aware?

October 01, 2018

Did you know that one mouthful in three is directly thanks to bee pollination? Bee Aware Month (every September) is a chance for us to learn about the incredible value bees bring to our lives and find out how we can help them!

Continue Reading

Sign up for our newsletter

Get Sustainability Trust's news, events and specials straight to your inbox every month