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Here are some of our most frequently asked questions about new & replacement boilers

I How do I know it is time to replace my boiler?

If we set aside the obvious fact that your boiler has completely failed already, then good questions to ask yourself are.

  1. Whether your boiler happens to be many years old (10-15).
  2. Is the energy rating for your installation “G”? If so, then you are wasting a lot of money and energy as the efficiency is likely to be around 60% or less.
  3. Get an engineer to do an assessment for new boiler.

2 My boiler is 15 years old, should I get a new one?”

If your existing system is that old but has been well serviced and you are happy with it, then you could keep using it.

But it is likely to be quite inefficient and more expensive than necessary to run.

However, you would benefit from replacing it – check out boiler types here.

3 What is a decent lifespan for a modern boiler?

You can expect to get 12 to 15 years of life from a modern installation.

4 How often should I get my system serviced?

It is recommended that you have a proper service annually.

5 What about boiler insurance cover?

Insurance cover can be useful if you feel that in the future you may not be able to afford repairs.

You should be able to get boiler insurance cover for around £100 yearly depending on the provider and type of cover you want.

6 What about the cost of extra’s?

A power flush can cost £300 to £375. Magnetic filtering prices are around £100. Fitting smart meters or thermostats may have individual costs.

You may also encounter some remodeling if you are moving your boiler location for example.

Make sure any quotation takes into account all aspects of the work proposed.

7 How long does it take to replace a combi boiler?

You should allow 2 days for a good set of fitters to do the job, maybe 3 days including a power flush. I

f the boiler is to be fitted in the same location.

8 How long is the typical warranty for boilers?

This is going to depend upon the manufacturer and / or the supplier.

For a budget product you may only get 2 years, but for a top quality boiler you can get 7 to 10 year warranties.

9 Why is my new boiler so noisy?

There are a few reasons why your boiler may be noisy.

  • boiler kettling comes from limescale build-up in the heat exchanger making a whistling or banging sound.
  • Gurgling sound could be trapped air. Try bleeding the radiator nearest your boiler.
  • Your circulation pump could be running to fast causing a humming sound.
  • Grinding noises, could be a faulty pump.

If you feel your system is making unusual noises, then it’s a good idea to have an engineer check it out.

10 What is a power flush?

A Powerflush is simply a way of cleansing your water heating system.

It is designed to remove dirt, sludge, rust or debris that might have accumulated inside your system over time.

11 What is a magnetic filter for my boiler?

A magnetic filter works by attracting any metal sludge. This is typically corroded steel particles that build up inside the heating system.

The metal parts get caught by the filter and this cleans the water so it can continue to flow easily through the pipes.

12 Which is the best type of hot water tank?

Usually, an unvented water cylinder will give a better flow rate.

That is because they usually work off mains pressure – it also means that you not going to need to keep a cold water tank in the attic like a vented system would.

13 Is it worth getting a boiler serviced regularly?

It’s prudent to have your boiler serviced annually, for 2 good reasons:

  1. To keep the unit working at top efficiency.
  2. To make sure the system is operating safely.

Your boiler warranty may also have a clause specifying an annual servicing program  – See more about servicing & insurance here.

14 Does my household insurance cover the boiler?

A typical standard home insurance policy is unlikely to cover a boiler breakdown or replacement.

However, you may be able to add some extra cover for the boiler to your existing policy. – you need to contact your insurer about this.

15 When do radiators need replacing?

If you notice that you are not getting as much heat from them as you used to, then maybe you could try bleeding them or getting a power flush before spending cash on new radiators.

Older radiators may not be as efficient as new designs, as a modern radiator may be as much as 50% more efficient than one made back in 1999. However, most radiators should last anything from 10 to 15 or 20 years with no problems.

It’s also important to have the right size radiator for the room.

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