Sustainable services for your home

We provide everything from heating and insulation, to lighting to free advice and home assessments.

We are the home energy experts. From advice to install, we do it all. 

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heat pumps

We will help you find the right heat pump for your home that will keep you warm during the cold months and cool during summer.

Heat pumps
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Central Heating

Central heating is the easiest way to control the temperature in your home through out the year. Find out if this central heating is right for you.

Central Heating

Insulation

A properly insulated home is a warm home. We are the leading experts on insulation in Wellington. We provide advice + a full supply and install service.

Insulation
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Home energy assessments

Our home energy experts will assess the energy efficiency of your home. Starting with insulation, heating and ventilation.

Book A Home Energy Assessment
Finance options

Subsidies

Creating a warmer, healthier home just got easier. Talk to us about subsidies available.

subsidies
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Advice for rentals

Landlord, a tenant or property manager? Looking for advice on the Healthy Homes Standards? We can help.

Rental Advice
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ventilation solutions

Moisture leads to dampness and damp homes can result in housing related health issues. From simple solutions to mechanical ventilation systems, our experts are here to help.

Ventilation
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efficient Lighting

We can help make sure your home is more energy efficient and warm with LED downlights. From supply to install, we can light up your home.

Led lighting install

Home ev charger

Is your home EV-charger ready? From assessment to supply and installation, we can help you on your journey to EV ownership.

EV Charger install
Looking for healthy home advice?
Energy Hardship is a Thing, MBIE Report Shows. (Yes, we already knew that).
Energy Hardship is a Thing, MBIE Report Shows. (Yes, we already knew that).

Do you live in a house with significant mould or dampness?  You’re not alone (sadly).  A recent report from MBIE has found that as many as 110,000 households can’t afford to adequately heat their homes. Our CEO Georgie Ferrari dives into the report and tells you what Sustainability Trust is doing to turn this terrible statistic around.   

Green Home Loans
Green Home Loans

Did you know if you’ve got a mortgage with one of the major banks in New Zealand - chances are you can access a low or no interest loan to make sustainable improvements to your home? Read our latest blog, written by our very own CE to learn more about which banks have started offering low or no-interest loans to encourage the uptake of sustainable home improvements.

The Benefits of Heat Pumps
The Benefits of Heat Pumps

The results of the most comprehensive study of heat pump use in New Zealand, or elsewhere in the world has recently been released. It evaluated the benefits, costs, and changes in behaviour in households who had a heat pump installed in the government’s Warmer Kiwi Homes (WKH) low-income heating and insulation installation subsidy programme.

Is your insulation due an upgrade?
Is your insulation due an upgrade?

Insulation is one of the most cost-effective ways to boost the thermal performance of your home. But, if you've had insulation installed 10 years ago or more, it could be time for an upgrade.

Electric Vehicles and Batteries
Electric Vehicles and Batteries

Batteries, hybrids, emissions, charging, parking- there’s lots to consider when thinking about buying or using an electric vehicle (EV). Here we answer some frequently asked questions to demystify some common concerns.

Understanding Electrical Heaters: Cost, Efficiency, and Effectiveness
Understanding Electrical Heaters: Cost, Efficiency, and Effectiveness

How do cost, efficiency and effectiveness relate to one another with electric plug-in heaters? We’re here to explain.

COVID-19: Operating at Red
COVID-19: Operating at Red

We are committed to keeping our customers informed and up-to-date with developments as they affect our services to you. This is our update at Monday, 24 January.

Home Energy Saver - Anna M
Home Energy Saver - Anna M

Anna a yo-pro, and her two cats Dino and Suzi live in an adorable 1-bedroom 50 sqm ‘sixties standout’ studio apartment with sweeping views over Wellington City. She booked in for a free Wellington Home Energy Saver assessment to see how she could improve her home. Check out what she did next.

Your WHESP crew
Your WHESP crew

If you’ve ever wanted to improve the overall energy efficiency of your home, who are you going to call? Not Ghostbusters. You’d call us and book in with a Wellington Home Energy Saver. This highly qualified, easy-on-the-eye, team of epic assessors have got you covered. They’re fantastic and you’re going to love them.

Heating, heaters, types of heat.
Heating, heaters, types of heat.

Heaters, heating heat - understanding how heat is transferred will help you choose the right heating for your home.

In this post, we’ll run you through what to look for, what to look out for and (hopefully) we will be able to help you find the best heater for your home.