Heating and Insulation Guides
Heat Pump Sizing Explained
Heat pump sizing matches output to your home's heat loss on a cold day. Learn how MCS installers calculate it and how to check…
8 min read
Fresh home guides every week
The HousyTools Home Guides
Plain English guides to paint, flooring, energy bills, heating and appliance error codes. Each one is checked against official sources and paired with a free calculator so you can work out your own numbers.
Boiler Error Codes
Baxi E133 Error Code: Meaning and How to Fix It
Baxi E133 is a gas supply or ignition lockout. Learn the safe checks, how to thaw a frozen condensate pipe, how to reset and…
6 min read
Boiler Error Codes
Vaillant F62 Error Code: Meaning and What to Do
Vaillant F62 means the flame went out later than expected after the gas valve closed. Learn what causes it, what you can safely do…
6 min read
Energy and Bills Guides
Is Solar Worth It in Northern Europe?
Solar panels in northern Europe make about 900 to 1,050 kWh per kWp a year. See real city data, winter output, payback and when…
7 min read
Boiler Error Codes
Vaillant F54 Error Code: Meaning and How to Fix It
Vaillant F54 error code shows a gas supply fault on older ecoTEC plus boilers. Learn the safe checks, Vaillant's reset limit and when to…
7 min read
Boiler Error Codes
Vaillant F29 Error Code: Meaning and How to Fix It
F29 means your Vaillant boiler lost its flame and could not relight. Learn the safe gas supply and condensate pipe checks, and when to…
7 min read
Energy and Bills Guides
How to Read Your Energy Bill (UK and EU)
A plain guide to every line on a UK or EU energy bill, from meter readings and kWh to unit rates, standing charges and…
8 min read
Boiler Error Codes
Vaillant F27 Error Code: Meaning and What to Do
F27 is a safety lockout that means your Vaillant boiler sees a flame signal when the burner is off. Here is what causes it…
7 min read
Boiler Error Codes
Vaillant F22 Error Code: Meaning and How to Fix It
F22 means your Vaillant boiler has too little water or pressure. Learn the safe way to top up, the right pressure, and when an…
7 min read
Energy and Bills Guides
What Uses the Most Electricity in a Home?
Heating, laundry appliances and fridge freezers top the list, but running time matters as much as wattage. Here is how to find and cost…
7 min read