Guides and insights on solar, heat pumps, insulation and saving energy
Heat pump error codes differ by brand, but the faults behind them fall into six categories. Here is what you can safely check yourself — and when to call an…
28 August 2026
Boiling costs about 2.6p a litre at current prices — under a penny per mug. The expensive habit is overfilling, which can quietly waste around £66 a year.
28 August 2026
Viessmann's Vitodens range pairs stainless-steel heat exchangers with a 10-year standard warranty on the 100-W. We review the German brand's published data for UK buyers.
27 August 2026
The classic no-heating-on-a-freezing-morning fault: how to thaw a frozen condensate pipe safely with warm water, and the permanent fixes that stop it happening again.
26 August 2026
Reroofing with panels on top means paying to take them off and put them back — typically £100–£250 per panel. Here is the full cost breakdown, the warranty trap to…
26 August 2026
A heat pump is sized to your home's heat loss — so insulating first buys you a smaller, cheaper unit and lower bills forever. Our worked example puts numbers on…
25 August 2026
Grant scammers borrow real scheme names — and real deadlines — to pressure you into upfront fees. Here are the red flags in order of reliability, how each genuine scheme…
25 August 2026
Once a week your heat pump heats the hot water cylinder to 60°C to kill Legionella bacteria. Here is why, what it costs at 2026 prices, and the settings you…
24 August 2026
Worcester Bosch, Vaillant, Ideal, Baxi, Viessmann and Alpha compared on warranty length, the conditions attached, and what actually voids them. Alpha's no-strings 10 years is the quiet winner.
24 August 2026
A full eco-cycle dishwasher costs about 22p a load — cheaper than washing under a running hot tap once water and heating method are counted. The full method-by-method table.
24 August 2026