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Conventional (Traditional) Boiler
A conventional system has two water tanks in the loft, a large ‘cold water storage tank’ and small ‘feed and expansion tank’.
The ‘cold water storage tank’ draws water from the cold water mains to refill. Water from the storage tank feeds cold water down to the cylinder (normally in the airing cupboard).
The central heating boiler will heat the cylinder and converts cold water to hot, this then enables the cylinder to release gallons of hot water to taps throughout the house.
The ‘feed and expansion tank’ is usually smaller and maintains the correct level of water in the heating system. It also allows for expansion of the water in the radiators and pipe work when it gets hot. A real benefit of this system is that showers, taps and running baths can be drawn in any room at the same time; not all systems can do that.
If the cylinder does run out of hot water it will have a fast recovery rate of 25 to 30 minutes (with a new boiler and cylinder). |
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Combination Boilers
Combi's are now the best selling boiler type for gas central heating in Britain. They've been proven steadfast, reliable and tough. Some combi's will settle snugly into an average cupboard, if not a cupboard could be built around the boiler after installation.
They are economical to run. And can certainly produce an endless supply of hot water.
But it has to be mentioned, that the flow may be limited if other taps are running simultaneously. That said, it provides almost instantaneous steaming hot water literally on tap. Whenever you need it.
There is no storage cylinder to heat first or to run cold. There will be no cold water storage tank to find space for and no feed and expansion tank needed.
So ask yourself if there is such a great demand for simultaneous hot water around the home.
If the washing machine, bath and shower aren't competing for water at the same time, the combi really could be the answer for your home.
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Condensing Boilers
Around one quarter of Britain's carbon monoxide emissions originate every year from the the energy we use to heat and light our homes. It's because we burn fossil fuels (gas) to produce that energy. And over time the resulting waste gases do add to the effect of global warming. To a degree just changing an older style boiler to a new conventional or combination boiler (around 80% efficient) is a big step in the right direction, any boiler over 15 years old is inefficient (approximately 50% efficient), wasting natural resources and your money.
But if you feel that you want to make a positive statement; you'd like to really reduce emissions and your gas bill you may want to consider a 'High Efficiency Condensing Boiler' (around 91% efficient).
Yes it is a little more expensive initially. But you'll gain in the long term when you notice that your fuel bill has been reduced substantially. In some homes more than one third.
For an example if you have decided on a 'Combination boiler' Vaillant Turbomax 828 E, you could upgrade to the Vaillant Ecomax 828 2E 'Condensing boiler', the radiators and hot water will have the same heat up time and flow except the standard combination boiler (Vaillant Turbomax) will be around 80% efficient and the condensing combination boiler will be around 91% efficient.
But it has to be mentioned, these boilers need to have a lot of thought when it comes to the position of the boiler and the flue, this is because there is a large amount of 'Pluming' (steam / water vapour) which comes out of the flue outside, consideration ned to be taken regarding neighboring properties and boundary lines. We can survey your property and help you to decide the best place for your condensing boiler. |
Central heating controls
- All central heating systems must have the correct type of controls in order to make the boiler, cylinder and radiators run as efficiently as possible whilst giving you the hot water and heating that you need when you need it. We can install a full range of controls designed to meet your needs.
Modern conventional systems should have the following controls:
Programmer (heating and hot water controls)
Room thermostat
Cylinder thermostat
Wiring centre
Motorised valves
Pump
Thermostatic radiator valves (on selected radiators)
- Combination systems should have the following controls:
Programmer (heating only control, water operates when tap is used)
Room thermostat
Thermostatic radiator valves (on selected radiators).
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Towel rails
You may decide to have a different style radiator, for example we can supply a laddered towel rail for the bathroom which comes in a stunning chrome finish or white and gold, these towel rails come in a variety of sizes to suit the size of your room |
Column radiators
For a different look to your room there are the old style column radiators which come in a variety of finishes and colour's. The cost of these radiators is more expensive as they are made to order radiators based on the classic cast iron design.
Column radiators : the Stelrad column radiator has a smooth finish to the radiator the same as a modern radiator.
Classic cast iron column radiator : these MHS radiators are made of cast iron and have a textured finish which would suit the period house or the modern apartment. |

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Most central heating systems contain some magnetite sludge, many old systems contain excessive amounts. If you install a new boiler in a system containing excessive amounts of sludge it can be disturbed around the system and into your brand new boiler.
A Power Flush is the safe, clean and easy way to remove sludge (magnetite sludge) from your central heating system. If your system shows any of the following symptoms, then both you and your central heating will benefit from this type of water treatment:
- Cold spots
- Poor circulation
- Noisy systems
- System blockages
- Expensive bills
- Dirty system water
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| By using the 'Powerflush Machine' our qualified engineers will be able to clean out the contamination within your system, and in one operation with no mess and no fuss, restore your installation to give your new boiler and system the best start. Once the system has been cleaned, we will refill the heating circuit and an inhibitor (chemical) will be added to protect your system in the future. |
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Emergency Service - We offer this service to domestic, industrial and commercial customers. Under normal operating conditions we can respond to your call within 2 hours via our number : 02380 434300 |
Help and Support - we operate a free help and support facility via e-mail at info@aselect.net. This facility is open to all factories, offices, homes, restaurants, pubs and clubs - we are here to help everyone.
Call us now on 02380 434300. |
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