Absolute Tips

Welcome to the tips page.

Ever got home and the heating isn’t working? No Hot water? Power off? Possibly even leaking pipes!
Although frustrating, some of these issues can be solved by making a few checks, without having to call out an engineer.
The sections below provide step by step instructions to hopefully help you get back up and running.


Do you know where your stop tap is? In many houses it’s under the kitchen sink, just behind the bottle of cleaner and spare dusters. The last thing you want is a burst pipe and not be able to turn off the water. Some stop taps are near impossible to get to, as fittings and fixtures are changed around it. There are solutions to this, as taps can be relocated for a small cost.

If you do come to find a burst pipe, the important thing to do is not to panic. The thing is with a leak is that it’s already happened, so the next steps are to try and minimise the damage and costs to you, but with the majority of leaks you may have to call out a professional.
As you now know where your stop tap is, firstly you need to turn it off. The next recommendation is to turn off your boiler. The boiler may not be a cause of the leak, but it’s better to be safe, as a leak on the heating system could be very costly, as some boilers and pumps will keep running with no water in.
Once you have turned everything off, it’s probably time to call someone out. You can be trying to dry up where the leak is with towels etc, perhaps put a pan under to collect any excess water.


No Hot Water or Heating. There’s nothing worse than trying to run a bath, but the water’s cold. Come home and the radiators are freezing?
A lot of problems like this can be easily solved by following the below steps. With heating, there are quite a few switches that need to be on to allow it to come on. The following items can be found on your heating system.
Thermostat (Usually found in the hallway or lounge).
Programmer (Can either be on the boiler itself, but can be located elsewhere).
Boiler (Some boilers have a switch to switch the heating on permanent or timed).
Fused Spur (Usually located near the boiler, main power switch to boiler).

Often, the above switches can be turned off accidentally, or programmers can lose times and need reprogramming.


Many heating systems are pressurised, which basically means you don’t have the water tanks in the loft. Boilers on pressurised systems have a built in failsafe, which means that if the pressure gets too high or too low, the boiler will not work.
Pressurised systems will have a pressure display either on or very close to the boiler, either in the form of a gauge or digital display. If the system is pressurised, there will also be means of filling it, either by ways of a universal filling loop, or a filling loop built into the boiler. As a general rule, the required pressure of a boiler is between 1-1.5 bar.
When filling the system, it is important to keep an eye on the pressure. Open the valves on the filling loop one at a time, until you hear a hissing sound, which indicates the system is being pressurised. Once the system reaches pressure, you may need to 'bleed' the radiators. see below.


Radiators can feel ok to the touch, but just not hot enough. To find out what the problem is, just have a feel of them. You will find that they may have a cooler spot on them, either generally at the top or the bottom. Some radiators may come on whilst others wont. You may find that only some of the radiators work, perhaps only the upstairs ones come on, or the odd radiator just wont get warm.
Check out the below section for some basic tips.

Radiator Cold at the top

If your radiator feels cold at the top, chances are there is some air trapped in the system. To get rid of this, you need to 'bleed the radiator'. To do this you need a special key, which is universal and available from most hardware shops. Along with this you will need an old hand towel you don't mind throwing away, or kitchen roll wil suffice. The bleed valve itself is a very small square, located on one of the top corners if the radiator. Use the key, and turn the square slightly anti-clockwise. As you unscrew it, you will hear a hissing sound, which is the air escaping from the radiator. The more you unscrew it, the faster the air escapes, but if you unscrew it too much, the screw can come out and be difficult to get back in, especially when there's water rushing out. Once water starts to come out, close the valve, and repeat on other radiators. If you have a pressurised system, you will need to add water to the system, as detailed above.

Radiator Cold at the bottom

Some radiators can feel cold at the bottom. This usually occurs on older systems, and unfortunately is not as easy to solve. In most cases, this is caused by a build up of sludge, which gathers at the base, meaning no hot water can get through. The most advisory thing to do is call out a heating engineer to do a 'power flush' on the system. The engineer will run high pressure fluid through the system, cleaning out all of the debris.
There are a couple of things that may help. Firstly you can run your heating up to temperature, and close off the normal functioning radiators. This means all of the hot water is directed to the problem area, hopefully clearing it out. The issue with this is that the sludge is still in the system.

Some Radiators cold

If you find a radiator is cold a problem could be with the valve. Some valves stick closed, so need to be freed. Try opening and closing it a few times, as this can sometimes move the water through it. If not try closing off the other radiators, as a problem could be a blockage elsewhere.
If the upstairs radiators are warm, but the downstairs cold, this is generally caused by a problem with the heating pump, and will require an engineer to repair.

Feel free to email us with any questions at enquiries@goabsolute.co.uk, and someone will get straight back to you.