Gas Boilers

Boilers account for around 55% of what you spend in a year on energy bills, so an efficient boiler makes a big difference. A condensing boiler is more efficient than an old-fashioned non-condensing one because it recovers more heat and sends cooler gases up the flue.
A standard boiler is one that has a separate hot water cylinder (unlike a combi boiler). You might choose a standard boiler if you need to use a lot of hot water. A combi boiler doesn’t need a separate water cylinder.
Work involved
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Initial Assessment:
A qualified engineer will survey your home to assess your heating needs, check the existing boiler and pipework, and recommend the best replacement option. -
System Preparation:
The old boiler will be safely disconnected from the gas, water, and electrical supplies. The engineer may also drain your central heating system to prevent leaks during removal. -
Removal of the Old Boiler:
Your old boiler will be carefully removed and disposed of in line with environmental regulations. -
Upgrading Pipework (if needed):
If your new boiler requires different connections or your pipework is outdated, the engineer may upgrade pipes, valves, or radiators to ensure compatibility and efficiency. -
Installing the New Boiler:
The new boiler will be fitted in the chosen location, connected to your heating and hot water systems, and linked to the gas, water, and electrical supplies. -
System Flushing and Cleaning:
The heating system may be flushed to remove sludge and debris, ensuring your new boiler runs smoothly and efficiently. -
Testing and Commissioning:
The engineer will thoroughly test the new boiler, check for leaks, and set up controls and thermostats. They’ll also ensure the system meets safety and efficiency standards. -
Handover and Instructions:
You’ll receive a demonstration of how to use your new boiler and controls, along with warranty information and any relevant paperwork. -
Aftercare:
Many installers offer aftercare services, such as annual servicing and support, to keep your new boiler running efficiently.
Payback
The costs for replacing a boiler will vary, but a straightforward gas boiler replacement will typically cost around £2,300. The amount you could save depends on how old and inefficient your existing boiler is. A typical household (gas-heated 3 bed semi) could save around £300 per year by upgrading from a G rated boiler, to an A-rated condensing boiler with a full set of heating controls.
Practicalities
At Alternate Energy all our gas engineers are Gas Safe registered. We will ensure that your system complies with Building Regulations and will make sure you get all the documentation to prove this. Keep these documents safe – you will need them if you sell the property.
If you need to replace your boiler anyway, it is a very good idea to get the most efficient boiler you can. However, even if your old boiler does not immediately need replacing, this may still be a good option.
The appearance of your home
A standard boiler will take up more space than a combi boiler.
Why not also consider…
Another option to consider alongside a new boiler is to improve your heating controls. The right controls will let you set your heating and hot water to come on and off when you need them, heat just the areas of your home you want, and decide how warm you want each area to be.