London Plumbing &
Heating Prices

Boiler installation specialists

We carry out most gas services but we are installation specialists. We can quote anything from combination boiler swaps to full system upgrades with boosters and unvented tanks. The main concern, as this type of work is not cheap, is choosing the right product for each individual property and making sure it works to the customers needs. This goes from the correct pipe sizing/ pressures to the location of the heating appliances and the bathroom appliances it will be serving.


We tend to recommend boilers with longer warranties (5 to 10 years) for peace of mind when spending this kind of money. We can provide the annual servicing that is required to maintain the warranty with the manufacturer – the result is usually paying a lot less than present servicing/ maintenance contracts with the Gas Board or other maintenance companies

Below is a guide for boiler swaps – all prices are inclusive or parts, labour and vat. Additional costs maybe required for things like condense pumps. It is always best to view the property first as in many cases there is space requirements that need to be checked for the new boiler.

New Boilers

Supplied & Fitted

from £1850 + VAT

7+ year warranties

Gas Safety Certificates

Certificates provided

£105 + VAT

Annual reminders provided

Boiler Service

Comprehensive service to keep all working as it should

£105 + VAT

Keeping boiler warranty’s valid

Boiler Service & Gas Safety Certificate

£140 + VAT

Ideally booked annually


Professional plumbers

£105 + VAT

Price per hour


Improving central heating performance

from £450 + VAT

Removing sludge and improving efficiency

We carry out most gas services but we are installation specialists.

We work to a 1 hour charge policy for all work carried out. Most jobs can be quoted for on arrival so you get a fixed price. Some jobs, due to reasons that will be brought to your attention, can not be given as a fixed price – these can be given as a range of best and worst case scenario so the price does not escalate beyond a reasonable figure

Customer reviews

Excellent Service and Quality

“I have used Gareth and Flush Plumbing for over 7 years, both for regular maintenance and repair work, and as lead contractor for a major flat refurbishment which involved the installation of a complete new heating system, bathroom and toilets. His work is always of a high standard, and he is a pleasure to deal with – I’d recommend him without hesitation.”


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