comes to heat pumps , that means we usually specify a Viessmann .”
Minimum hassle , maximum space In this case , a Viessmann Vitocal 222-A 16 kW air source heat pump was selected because of its highly efficient and streamlined design . It takes up 60 % less space than comparable models , making it ideal for retrofitting in terraced properties . With a flow temperature of 70 ° C at an outside temperature as low as -10 ° C , it also works well with the Galvins ’ existing radiator system , which greatly helped to minimise the cost and disruption of the installation .
Even with the effect of price cap increases , our monthly bills have dropped by a quarter .
After some deliberation about location , the exterior unit of the heat pump was installed to the rear of the property . Due to a prior loft conversion , the new water tank was also placed outside within purpose-built , specially insulated housing . The old boiler and ventilation pipe were removed , freeing up extra space indoors . “ A huge benefit of losing the boiler was getting a whole cupboard back in use ,” recalls Lucy .
Solar energy Once the heat pump installation was completed in June 2023 , Lucy switched her attention to electricity generation . Working with Norfolk-based solar specialists Total Renewables , she opted for six 2.55 kWp PV panels with a 5 kWh battery to store any excess energy generated . “ Heat pumps are electric , so it ’ s great to be able to top up the energy they use from your own roof ,” she explains . “ On 22 September 2023 we celebrated our first day producing more power ( 5.7kWh ) than we imported ( 4.32KWh ).”
Reaping the rewards Both the Vitocal heat pump and the solar panels are managed and monitored by Viessmann ’ s intuitive ViCare app which helps to increase comfort and save energy costs , while requiring minimal oversight . Says Lucy , “ The heat pump manages itself , keeping our home lovely and toasty , with a very pleasant , steady warmth .”
The family ’ s energy bills have reduced considerably , too .
“ Even with the effect of price cap increases , our monthly bills have dropped by a quarter ,” she continues . “ And our overall emissions from space and water heating are less than half what they used to be , which is even better ! In November 2023 , they were 82.85kg CO2e , compared to 196.08kgCO2e in November 2022 .”
With additional upgrades planned for 2024 , including several double glazed windows , an electric cooker and capping off the gas for good , further savings are yet to come . “ By next November , we hope to be fully electrified , and better insulated too , so bills and carbon will keep coming down !” said Lucy .
System spec Viesmman Vitocal 222-A 16kW air source heat pump Six 2.55kWp Trina Vertex S PV panels Puredrive II DC 5 kWh battery Viessmann ViCare app
46 - www . refurbandrestore . co . uk