Domestic and General, why did you condemned a boiler with no reason?
It is a customer house, and it is a customer boiler. You are paid by customer to do a proper job! Stop this kind of cowboy activities!
Continue ReadingWhat is the correct hot water temperature setting on a combi boiler?
It should be 100% or at least above 70% of the full scale. Hot water on its own will give burnt hot water, and a portion of cold water is also required at the tap to give a right temperature mixing for showering or washing. Particularly on old combi boilers, it isn’t always stable if […]
Continue ReadingPut a boiler and heating off for a while?
It isn’t a good idea through! Image if you leave a car not being used for a while, will it start again after three months? It is the same! Boiler and hot water are needed to leave on all times but with a low room temperature setting for heating.
Continue ReadingWhat is the best heat only boiler in the current market?
There are three types of boilers now, combi boiler, system boiler, and heat only boiler. A heat only boiler is working with a hot water storage cylinder. It is normally opened system by a feed and expansion cistern (smaller one compared with bigger water cistern). The best heat only boiler, in our opinion, is Worcester […]
Continue ReadingShall I go for a national company for a boiler replacement?
Answer is no, unless you want to take a boiler finance. The part of your installation fee for a new boiler, normally around at £1000, will go into the turnover of one national company. This national company then will sub contract your boiler installation job to a local gas engineer. This engineer will probably get […]
Continue ReadingMystery leaking on a combi boiler?
To call it a mystery leak is that it leaks occasionally, but often when a gas engineer checks its source, he couldn’t find where is it from. A lot of cases, it is from AAV, auto air vent. All combi boilers have a device called AAV. As shown above, an auto air vent (AAV) is […]
Continue ReadingExternal magnic filters, are they really working?
This combi system is full of sludge, past three years, I have cleaned this boiler’s hot water heat exchanger on a yearly basis. Without a proper system clean, I warned the customer this year that I will come back again next year to do the same. There is an Adey Magnaclean Professional filer from the […]
Continue ReadingI have an unvented hot water cylinder, should I time the hot water on periods to save a bit of gas?
Programming hot water on twice per day, or leaving it on all time 24 hours, makes little difference on energy saving. A modern unvented hot water cylinder (white hot water storage tank normally in upstairs airing cupboard) is very energy efficient. That means, it has very little heat loss while storing hot water. It is […]
Continue ReadingElectric combi boiler, do they exist?
Being a boiler engineer and also an electrician, I can say there is no such a thing as electric combi boiler. But if you search Google for “electric combi boiler” you will get a lot of results. I am not even bothered to read any of them. The smallest output of all combi gas boilers […]
Continue ReadingThis Worcester boiler in loft – reliable or less protection?
This is a Worcester Greenstar combi boiler I serviced this morning. It is in a loft space, and it is still running at zero system pressure. Great, as the customer doesn’t get interrupted for low system pressure! Unlike most boilers from other boiler makes, most of Worcester boilers don’t have a low water cut […]
Continue Reading