Question 1

How often does the refrigerant need topping up?

Accepted Answer

A healthy system should never need its gas topped up because it is a sealed loop. If levels are low, you have a leak that needs fixing immediately. It is bad for the environment and often illegal to just refill a leaking unit.

Question 2

Is an annual boiler check a legal requirement?

Accepted Answer

For landlords, a yearly check is a legal requirement. If you own your home, it is not legally required but you need it to keep your warranty valid.

Question 3

Can I put underfloor heating under carpet?

Accepted Answer

Yes, you can use carpet if it is not too thick. The carpet and underlay should not have a tog rating above 2.5. If it is too thick, the heat cannot get through.

Question 4

How much does a power flush cost?

Accepted Answer

As a guide, expect to pay around £400 to £800 for a home. The total depends on how many radiators you have and how dirty the system is. Always ask your professional for a fixed price before they start.

Question 5

Can I install a wood burner myself?

Accepted Answer

You can, but you must tell the council first and pay for their checks. It is usually easier to hire a registered expert who can sign off the work themselves.

Question 6

How long does a new unit last?

Accepted Answer

With a professional service every year, a new unit lasts 15 to 20 years. Always hire a Gas Safe engineer to check the heat exchanger is safe.

Question 7

Will it work on cloudy days?

Accepted Answer

Yes, the panels still collect light even when it is overcast. Your water might not be as hot, so your boiler will top it up. You will always have warm water ready.

Question 8

How much does a shower heat recovery system cost?

Accepted Answer

As a guide, the units usually cost around £400 to £900. You will also need to pay for the plumber's time. Always ask your professional for a full price including parts and labour.

Gas & Heating Engineers

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