“Heat pumps offer a modern, low-carbon solution to provide space heating and domestic hot water and are particularly appropriate in countries which have both high heating requirements (in winter) and cooling requirements (in summer).”Across Europe, there are 11,279,386 heat pumps installed, saving 29.8 million tCO2, producing 116 TWh of renewable energy and providing 60,000 jobs.
How do heat pumps help?Heat pumps extract heat from the outside air, operating like fridges in reverse. These heat pumps in a residential setting can save more than 2 tonnes of carbon per year, contributing up to 70% less than electric heaters.
“Energy efficiency measures have the potential to deliver the sizeable emissions cuts needed to meet the targets set by the Climate Change Act (UK). Technologies like heat pumps represent low-hanging fruits for both businesses and households in the UK and abroad.”
- Condensing gas/oil boiler: 90-96% efficiency
- Conventional gas/oil boiler: 70-80% efficiency
- Direct electric heating: 35-45% efficiency
About 75% of the energy that is used is renewable, whereas 25% of the energy is generated by other sources (in 99% this is electricity). If the electricity is generated by renewables (PV, wind, hydro), then the heat pump is 100% renewable and CO2-neutral.They contribute to an annual reduction of 9,16 million tons CO2 emissions in the EU. According to International Energy Agency (IEA), heat pumps could save 50% of the building sector’s CO2 emissions, and 5% of the industrial sector’s. This means that 1.8 billion tonnes of CO2 per year could be saved by heat pumps.
Saving MoneyGenesis Energy state that a heat pump’s running costs depend on how long you use it and its energy output. According to energywise.govt.nz, a heat pump used 6 hours per day for 6 months of the year with an energy output of 6KwH will cost around $400 per year to run.
“Using a heat pump instead of an equivalent electric heater in your living space can save you around $500 a year”
Practical ConsiderationsInstalling heat pumps is almost always beneficial to a household in New Zealand. However, it is important to consider heat pumps in the wider context of energy efficient homes. A heat pump will be of most benefit to a home where other energy efficient issues have been addressed. Effective insulation will make a significant difference, as heating only works if the heat can be retained. Windows are a significant source of heat loss. Replacing windows with double glazing, or adding a “clip-on” secondary glazing system will make a big difference too.
“After checking out several suppliers, we decided to go with Goldstar Heat Pumps (so competitive and able to deliver exactly what we wanted). They came to the house, gave us really useful advice, then turned up when they said they would and did a quick, efficient, clean job. We are delighted with the whole process. Goldstar made it really easy, and we now have a great, warm home. I wouldn’t hesitate to recommend Goldstar Heat Pumps to anyone.” Annie Andrews