Category Archives: Energy Efficiency case studies

More complex retrofit case studies

Octopus Heat Pump one year on

One Year on – How much did our Heat Pump cost to run vs a Gas combi?

So it’s a one year since we had a heat pump installed in our 1930s three bedroom semi-detached home in Chippenham. Are the myths true? Did it work on a leaky 1930s house that isn’t that well insulated? Has it cost us a fortune to run? Are the neighbours walking around with ear defenders on? […]

Solar, Batteries, and a power diverter - Melksham

Case Study – Solar, Batteries and a Power Diverter – Melksham

This interesting case study is written for us by Mark Harris of Melksham. It demonstrates how a large domestic solar installation can take you off grid for much of the year. Mark’s installation didn’t come through the Zero Chippenham Community solar scheme, but we do cover the Melksham area. Mark tells us his experience… Background […]

How to maximise Solar usage and reduce your bills

How to maximise solar usage and reduce your bills

It’s been a beautiful sunny month in Chippenham and a great month for solar generation. In this post and video our solar admin Matthew takes a look at the different strategies he uses to make the best of that FREE solar electricity and minimise household energy bills. Introduction I first installed solar on our house […]

How much is my Octopus Heat pump costing to run?

How much does it cost to run a heat pump vs gas?

Background In October 2024 we finally replaced our Worcester Greenstar combi boiler with an Octopus Heatpump installation of a Daikin Altherma 3 monoblock Airsourced Heat-pump and 180 litre hot water tank. So two months on how well does it work? Is it keeping the house warm? Is it costing more or less money to run? […]

Air Source Heat Pump Noise Planning

The Journey to Air Source Heat Pump – Navigating Wiltshire Planning – Calne

In this case study Kev Matthews tells us how he’s navigated the Wiltshire Planning system on his journey to install an Air Source Heat Pump in his Calne home… …With the Boiler Upgrade Scheme from the UK government contributing £7500 (England and Wales) towards the cost of installation, it’s never been a been a better […]

DIY install of MVHR on a 1930s Semi Detached House

DIY install of an MVHR on a 1930s Semi-detached House

Mechanical Ventilation and Heat Recovery (MVHR) is technology that’s typically only installed on highly air-tight and insulated new build Passivhaus standard houses. Even bulk house builders will revert to trickle air vents for ventilation rather than install this technology. So is it possible to perform a relatively inexpensive DIY installation on an old leaky house […]

Daikin 8kW Heat pump

How a home in Monkton Park Decarbonised through a Heat Pump, Solar and Battery, and EV charging

Our home is a 1970’s 4 bed in Monkton park (extended from 3-bed in the 90s) and we have been there since 2022 – we love our home and wanted to make it more sustainable! The house has solar PV, a battery and a heat pump, as well as an electric car charger. When we […]

Octopus Heat Pump Installation 1930s Semidetached house Chippenham

Octopus Heat Pump Retrofit 1930s Semi Detached Langley Road

Our Octopus Heat Pump journey started in late October 2023. We’d been with Octopus Energy as an electricity and gas supplier for a couple of years and made good use of their Intelligent Octopus tariff. We wanted to decarbonise our house, and the last significant step on that journey was to get rid of gas. […]

Octopus Daikin Atherma Heat pump

Octopus Heat Pump Installation Hardenhuish Chippenham

Octopus Energy are rapidly becoming one of the major Heat Pump installers in the UK. This is largely due to their highly competitive pricing, which after the government’s Boiler Upgrade Scheme £7500 grant is applied, puts the installation cost on a par, or sometimes less than a new gas combo-boiler. It is possible to obtain […]

Air Source Heat pump Chippenham

Case Study – Air Source Heat Pump Installation – Chippenham April 2024

Zero Chippenham members Jan and Trevor describe their experience of an Air Source heat pump installation in their 1970s house in Chippenham.  The Myths Air Source Heat Pump? “It makes too much noise”, “It doesn’t keep you warm enough”, “it’s too expensive”. BUT it does take you away from fossil fuels for keeping your home warm and […]