Warning: this blogpost contains a lot of geeky detail! Like all Air Source Heat Pumps, the Viessmann has an app to control it and provide feedback. It has a very handy annual analysis of energy use and thermal energy generation. Lots of lovely detail that means we can delve into how much energy is used to heat the EcoBungalow and provide hot water, how much this costs, and how it relates to the design-stage calculations in the Passive House Planning Package (PHPP).   Energy

Research shows that 94% of UK homeowners with heat pumps are satisfied or extremely satisfied with their heating. This compares to 85% for the most common heating system in the UK, the mains gas boiler.   Yet we constantly see in the media and on social media claims that heat pumps are noisy, expensive to install, expensive to run, don’t work in old houses and don’t work in the cold.   What’s the truth?   I’ve been living with an Air Source Heat Pump (ASHP) for 18 months now

The weather’s getting colder. The heating is on. Energy use and comfort are becoming more interesting!   Energy use and carbon emissions:...

Moving into the EcoBungalow 3 ½ years ago, I inherited an ancient gas boiler with a hot water cylinder. Having become used to gas combi...