Combination boiler or combi boilers are the most
commonly type of boilers which are used in UK for a reason. Unlike the system
and conventional boilers which requires a hot storage cylinder, the combination
cylinder is an all in one unit which produces hot water for taps and central
heating. Also it saves a great space in your homes and its installation is easy
and faster comparative to any other boiler.
It usually takes the water from the main supply and
results in stronger water pressure. It provides you plenty of hot water. Thus,
no longer waits for the tank to refill again and again.
Modern high efficiency unit boilers are the
stainless steel condensing boilers with its built-in heat exchanger to provide
hot water to a home or a building. During the cold season, combi boiler runs
when needed to heat the structure and provide hot water to various hot
appliances. Whereas in hot summer days, combi boiler works whenever there is a
need for domestic hot water.
There are two main reasons behind the combi boilers
great and powerful efficiency i.e. these units have high operating efficiency
and low internal water volume. This means when in summer days you don’t need
space heating you are only paying to heat hot water which is domestically
of combi boilers
Gas combi boilers
– Natural gas combi boilers are commonly used by the residents of UK. Also if
your homes are connected with the gas network than this is the best choice for
you in terms of keeping running costs down.
Oil combi boilers
– For the homes not connected with the gas networks, oil boilers is a good
option. These boilers need an oil tank to be kept outside your home and once
the oil is on the edge you need to top it up from the suppliers.
LPG combi boilers
– LPG stands for Liquefied Petroleum Gas made with the combination of gaseous
hydrocarbons. They are almost same as oil boilers as they also need a tank
which is needed to refill once the gas is about to end.
Electric combi boilers
– An electric combi boiler is slightly different from all the other combi boilers
as they don’t require any tank or gas network. The water passes over an
electric element in the hot cylinder which has an immersion heater. This is
popular where the homes are not connected to the gas network or oil is too
expensive to buy.
is an inhibitor?
A central heating inhibitor is a liquid made up of
various chemicals that are unpleasant to our skin but very favorable to our
central heating system.
is the importance of an inhibitor?
Inhibitor has become a necessity as the construction
of expensive heat exchangers in aluminum becomes the standard boilers in the
market. Inhibitor keeps the system run
for longer period of time with the better performance and keeping your family
warm and cozy in the winters.
after knowing so much about the inhibitor, you might be thinking how to add
inhibitor to combi boiler? Don’t worry we have the answer to this question. So,
can add the inhibitor in 3 different ways.
need to drain the system to add the inhibitor
- Drain or unit and add the normal
inhibitor to it
- You can pour it by removing a plug on
the top of the towel radiator
- You can inject it into the radiator with
washing liquid bottle after removing the air vent plug.
through the bleed valve without any draining of the system
- Allow the radiator cool down after
switching off the system
- Try to select the radiator without the
thermostat radiator valve.
- Now shut both the radiator valves and
remove the blood screw
- Attach the inhibitor cartridge to the
- Inject the concentrated valves while
opening the radiators.
- Now shut the radiator valves and remove
the radiator cartridge calmly.
- After this you need to refit blood screw
and open the radiator valves
- Run your system for 15 minutes to
disperse the inhibitor around the system.
- After this process, you may need to
bleed the radiator.
through the filling loop, without draining the system
- Switch off the system and allow the
radiators to cool down.
- Now turn off the tap and remove the
- Join the inhibitor cartridge with the
- Turn on the tap and inject the inhibitor
- Turn off the tap and remove the adapter
- Now refit the filling loop
- And allow the system to run for good 15
minutes to disperse the inhibitor around the system.
These steps will surely help you to
understand how to add inhibitor to combi boiler? But don’t forget all these
steps have to be done carefully and if you notice any fault with the system or
the inhibitor, call the engineer immediately.