Central heating systems of one form or another have been around since the time of the Roman Empire. Today Central Heating Systems are predominantly fixed radiator based with a central heat source.
TR Heating Ltd provide a full range of central heating system servicing, maintenance and repair services for all types of central heating systems.
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The majority of existing systems that are fitted with a Conventional Gas Boilers / Regular Gas Boilers / Open Vent Systems are vented central heating systems. The term vented referring to the fact that the system is exposed to normal atmospheric pressure.
If you have a header or feeder tank in your loft then the chances are your heating system is a Vented Heating System.
image courtesy of APHC
Over my 28 years of experience these are some of the most common types of repair that I have been called to on Vented Central Heating Systems : Leaks from cylinder; Immersion heater faults; Snapped valves.
Like any heating system regular servicing / maintenance is a must. With Vented Central Heating Systems the following should be included : Immersion Heater: Check functionality; Check for leaks; Check that insulation jacket is in place; Mains Hot Water Cylinder : requires annual service
Sealed central heating systems provide automatic replacement of water losses via a pressurising unit and keep head requirements to minimum. An expansion vessel will deal with the effects of fluid expansion ( common for all liquids that are heated ) and contraction when the water cools. This expansion and compression occur over the full operating temperature range of the sealed central heating system.
image courtesy of APHC
The most common types of repair that I have been called to on Sealed Central Heating Systems : Sludge in system (See power flushing below ); Pump faults; Diverter valve replacement.
Like any heating system regular servicing / maintenance is a must. With Vented Central Heating Systems the following should be included : Check expansion vessel; Boiler service ( see Gas Boiler | Combi Boiler servicing ); Check water condition; Mains Hot Water Cylinder : requires annual service ( see Gas Boiler Servicing )
It is now common for sealed central heating systems to incorporate a combination / combi boiler.
image courtesy of APHC
The most common types of repair that I have been called to on Sealed Central Heating Systems with Combi Boiler : Sludge in system (See power flushing below ); Pump faults; Diverter valve replacement; Domestic plate exchangers; Poor Installation.
Like any heating system regular servicing / maintenance is a must. With Sealed Central Heating Systems that include a Combi Boiler the following should be included : Check expansion vessel; Boiler service ( see Gas Boiler | Combi Boiler servicing ); Check radiators.
When power flushing is required.
Power Flushing is also recommended every 5 years or so to help maintain the longevity of th ecomplete system.
Benefits of Power Flushing
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The success of a power flushing a central heating system will depend on the level of heating system corrosion which has occurred beforehand.
The power flushing process will correct most circulation problems, but cannot undo the corrosion and gradual decay of the central heating system.
Power flushing is the quickest, most effective way to flush heating systems, and involves minimal disruption and dismantling.
I use purpose built power flushing pumps, designed to correct circulation and boiler noise problems caused by accumulations of sludge, corrosion deposits and scale which are found in most ageing central heating systems.
The power flushing pump is temporarily connected to a heating system during the flushing process. The high water flow speed, combined with flow reversal, dislodges and mobilises sludge and corrosion deposits. Once the debris is loosened the pump expels it from the system into waste collection via a high speed flush using fresh water.
Each radiator is individually flushed without removal or disconnection from the system. After the power flush, the system is full of clean water, and reinstatement to normal operation takes only a few minutes.
A power flush can be extremely effective in cleaning systems that have corrosion problems as a result of a design fault, but we strongly recommend that any such design faults be rectified before power flushing commences.