Learn
No jargon for the sake of it and nothing designed to sell you an upgrade. If a job is over-sold in this industry, these pages say so — power flushing is the obvious one.
Or skip it and get my priceThe question every boiler customer now asks. How they actually work, why they run at 45°C instead of 70°C, what that means for your radiators, and when a boiler is still the right answer.
Read it →Two modes, one boiler, and the diverter valve that switches between them in a second. What kW and litres-per-minute really mean, and why your shower is weaker in February.
Read it →Vented versus unvented, the safety kit an unvented one legally needs, and the litres-per-person rule that decides the size. Undersizing is a twenty-year regret.
Read it →The numbers are not degrees. Your hallway radiator probably should not have one. And balancing the circuit matters more than the valves do.
Read it →The most over-sold job in heating. How to test your own radiators in two minutes and work out whether you are one of the minority who genuinely needs it.
Read it →Magnetic filters, scale reducers, terminal guards, condensate pumps and filling loops. What each does, what it costs, and which are already in your price.
Read it →Most people buying a boiler have three or four specific questions and no way to get a straight answer to them. Ask an installer and you get a quote. Ask the internet and you get an article written to sell you a power flush.
These are written by the people who do the work, and they include the parts that cost us money — that most systems do not need a power flush, that a scale reducer is pointless in Sheffield, that a combi will disappoint you if two bathrooms get used at once. We would rather you knew.
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