Smell gas? Get outside and call the National Gas Emergency line on 0800 111 999
An engineer testing a combi boiler's flue with a gas analyser

Boilers, gas and plumbing, sorted. Call H2O Gas.

An established gas, heating and plumbing company, serving West London for over a decade. Our Gas Safe registered engineers look after boilers, heating, leaks and landlord certificates for homes and businesses, and you get the price before any work starts.

Call 07877 772355 WhatsApp us
4.9 on Google
What customers say on Google

"He attended same day, diagnosed the issue and sent a quote, and all was resolved the following afternoon. Very responsive and pleasant to deal with!"

Chira G. · Google, 2026

"I had a gas leak. Ziad came and spent a lot of time just triple checking everything and managed to seal the gas leak."

Google review, 2019

"On each occasion he has been prompt, friendly and very efficient. Unblocking sinks, fixing leaks, replacing major pipework within interior walls. Each time he has left our home as tidy as he found it."

Sarah P. · Google

"Very useful in the fact he does commercial and domestic work, which is hard to find. We have used Ziad now for 3 years."

KallKwik Chiswick · Google

"We have used H2O many times over the years for all of our properties and cannot rate Ziad highly enough."

Miranda L. · Google

"He found and fixed the fault quickly and offered some informative and pragmatic advice."

Google review

"Very helpful with a tricky plumbing problem. Also quick responses, even over the weekends."

Alicja · Google

"He is quick to respond and has put in a new boiler system and cleaned radiators. Very happy to use him again."

Thomas S. · Google
  • Gas Safe registered engineers
  • 10+ years' experience
  • Homes, landlords and businesses
  • Price agreed before work starts

About us

A West London gas, heating and plumbing company with over a decade of experience.

H2O Gas Ltd looks after homes, landlords and local businesses across West London. We cover both sides of the job: the gas side, from boilers and servicing to safety certificates, and the water side, from heating and radiators to leaks and pipework. One call sorts both.

Our engineers are Gas Safe registered, and every job works the same way. We find the problem, give you the price before we start, and leave the place as tidy as we found it.

Experience
10+ years
Google rating
4.9★
One company
Gas & water
Who we work for
Homes & businesses
A newly fitted combi boiler with neat copper pipework

Services

Everything we do, split into gas and water. Tap a card to see the full list.

Both commercial and residential services are provided

ResidentialHomes, flats and landlords, from one boiler to a whole portfolio.
CommercialShops, offices, salons, cafes and kitchens, booked around your opening hours.

Gas

Yellow ochreGas pipe colour
  • Boiler repairs and breakdownsFault-finding on combi, system and regular boilers. Most common parts carried.
  • Boiler servicingAn annual check that keeps it safe, efficient and inside the manufacturer's warranty.
  • New boilers fittedAdvice on the right size and model, a fixed quote, and the old one taken away.
  • Landlord gas safety certificatesCP12 records for one flat or a whole portfolio, done around your tenants.
  • Gas leaks found and fixedTracing, testing and making safe, then a proper repair.
  • Cookers, hobs and gas firesConnections, safety checks and capping off.

Gas job? Call us and our engineers will talk you through it.

Call us

Water

Green and blueWater pipe colour
  • Central heating and radiatorsNew radiators, valves, thermostats and controls, plus balancing so every room warms up.
  • System cleaningFlushing out sludge when radiators stay cold at the bottom and the boiler starts to struggle.
  • Leaks and burst pipesFound, stopped and repaired, including pipework inside walls and under floors.
  • Blocked sinks and wasteKitchen and bathroom sinks, traps and waste pipes cleared and fixed.
  • Taps, toilets and cylindersDripping taps, running cisterns, and hot water cylinder repairs.

Leak right now? Turn off the stopcock, then call us.

Call us

How it works

Three simple steps from your first call to a finished job.

  1. Step 1

    Get in touch

    Call, WhatsApp or send the form. A photo of the boiler display or the leak helps our engineer bring the right parts first time.

  2. Step 2

    We find the fault and price it

    An engineer comes out, works out what's wrong and gives you the cost before starting. Your choice whether to go ahead.

  3. Step 3

    Fixed, tested, tidied

    The job's done, tested and the area cleaned up. Any gas work comes with the paperwork you need.

Prices

Starting prices for our most requested jobs. Bigger jobs get a fixed quote after a visit.

Boiler serviceFull safety and performance check, with a written record.From£90
Landlord gas safety certificate (CP12)Boiler plus one more gas appliance. Extra appliances priced on the phone.From£80
Boiler service and CP12 togetherOne visit, both done. The usual choice for landlords.From£140
Breakdown or repair visitIncludes the first hour of diagnosis and labour. Parts on top, agreed before fitting.From£95
New combi boiler, supplied and fittedFixed quote after a look at your current setup. Includes taking the old one away.From£2,300

Areas we cover

Based in Acton, covering these West London postcodes. Not listed? Call us and we'll let you know.

  • W3Acton
  • W4Chiswick
  • W5Ealing
  • W6Hammersmith
  • W7Hanwell
  • W12Shepherd's Bush
  • W13West Ealing
  • NW10Park Royal, Harlesden
  • TW8Brentford

FAQs

Quick answers to the questions we get asked most.

Are your engineers Gas Safe registered?

Yes. Every registered engineer carries a Gas Safe ID card, and it's worth asking to see it, whoever you use. You can check any card on the Gas Safe Register.

Can you come out today?

Often, yes. For anything urgent, call rather than message and we'll tell you straight away when an engineer can be with you.

Do you do landlord gas safety certificates?

Yes, for a single flat or a whole portfolio. We can arrange access with your tenants and do the boiler service on the same visit.

Will I know the price before you start?

Always. You get the price first. If something changes once the job is open, we stop and talk to you before going further.

Which boilers do you work on?

All the common makes, including Worcester Bosch, Vaillant, Baxi, Ideal and Viessmann. Tell us the make and model when you call.

Do you work on businesses as well as homes?

Yes. Shops, offices, salons and small kitchens. Work can be booked around your opening hours.

Contact us

Call, WhatsApp, email or send the form below, and we'll get back to you.

07877 772355Call us WhatsApp usSend a photo of the problem info@h2o-gas.co.ukEmail us
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