Phone answered 24/7
Boiler leaking, locked out, or no heating and no hot water: call a Gas Safe registered engineer any time, day or night, across South West London, Croydon and Sutton. Urgent breakdowns are attended the same day where possible, the boiler is made safe first, and you get the price and a realistic arrival time before anyone sets off.
Emergency call-out
Emergency visits from £180
The call-out covers the first hour on site: making the boiler safe and finding the fault. The price is confirmed on the phone before the engineer sets off.
Smell gas? Call the National Gas Emergency Service free on 0800 111 999 first.
Some stoppages are a two-minute fix. These checks are safe to do yourself; anything inside the boiler casing is a job for a Gas Safe registered engineer.
Most sealed systems want about 1 to 1.5 bar when cold, but the manual gives the right figure. If it reads low, top it up with the filling loop under the boiler as the manual describes, then reset. If it keeps dropping, there's a leak to find.
Winter plumbing checklistAfter a power cut a programmer can lose its time or schedule. Check the clock and the heating and hot water programmes, and compare any app with the controller on the wall.
No hot water but the heating worksIn freezing weather the plastic pipe running outside from the boiler can freeze and lock it out. Pour warm, never boiling, water along it to thaw it, then reset the boiler. Don't climb a ladder on icy ground.
Thawing a condensate pipeSmell gas? Don't touch the boiler or any electrical switches. Open the windows and doors and call the National Gas Emergency Service free on 0800 111 999.
Choose what the boiler is doing to see what it usually means, what to do while you wait, what the engineer checks on arrival and what the repair typically costs.
Usually a perished seal, a pressure relief valve letting water out, or a corroded pipe or heat exchanger inside the casing. Water and the boiler's electrics don't mix, so treat it as urgent.
Emergency call-out: £180 on weekdays from 8am to 6pm, £220 at other times, first hour on site.
Typical repair: £140 to £320 on top, quoted in writing before any work starts.
Often a failed pump, fan, diverter valve or circuit board, or a problem with the gas getting to the boiler. Sometimes it is something simple, so run these checks first.
Emergency call-out: £180 on weekdays from 8am to 6pm, £220 at other times, first hour on site.
Typical repair: £160 to £340 on top, quoted in writing before any work starts.
The boiler has shut itself down to protect itself. Common causes are an ignition fault, a flame it can't detect, low gas pressure, a blocked flue or, in freezing weather, a frozen condensate pipe.
Emergency call-out: £180 on weekdays from 8am to 6pm, £220 at other times, first hour on site.
Typical repair: £140 to £290 on top, quoted in writing before any work starts.
Usually a filling loop left open or letting water by, or an expansion vessel that has lost its charge. At about 3 bar the pressure relief valve opens and lets water out through a small pipe outside.
Emergency call-out: £180 on weekdays from 8am to 6pm, £220 at other times, first hour on site.
Typical repair: £120 to £280 on top, quoted in writing before any work starts.
Signs of overheating wiring, a failing fan or poor combustion. Poor combustion can produce carbon monoxide, which you can't smell, so treat the boiler as unsafe until it has been checked.
Emergency call-out: £180 on weekdays from 8am to 6pm, £220 at other times, first hour on site.
Typical repair: £160 to £360 on top, quoted in writing before any work starts.
Call the National Gas Emergency Service before anyone else, InstaGasWorks included. The call is free, they answer 24/7, and they make the supply safe.
National Gas Emergency Service: free, 24/7. The repair afterwards is an emergency call-out, £180 on weekdays from 8am to 6pm, £220 at other times.
Call 0800 111 999Response: same day where possible, with a realistic arrival time on the phone. Overnight, you are talked through making it safe and get the first slot in the morning.
An emergency call-out costs more than a booked breakdown visit, so it is worth thirty seconds working out which one you need. Ring with something from the “Book it and pay less” list and you will be told to book it and save the difference.
One reset can clear a one-off fault. A boiler that locks out again is protecting itself from a real one, in the ignition, the gas supply, the flue or the water circulating through it. Leave it off, write down the code on the display and call: resetting it over and over won't fix it.
Every price is published, for every time of day. You are told the figure on the phone before your engineer sets off, and any repair is quoted in writing before it starts.
Can wait a day
£120first hour, weekdays
Monday to Friday, 8am to 6pm
£180first hour on site
Evenings, weekends and bank holidays
£220first hour on site
See the full schedule of rates for every published price.
The fault code, the make on the front and the reading on the pressure gauge. You are talked through making it safe while you are on the phone.
Nobody sets off until you have the call-out price for the time of day and a realistic arrival time.
On arrival the leak is stopped, or the boiler or gas supply made safe, before anything else. Then the fault is found.
If you approve the quote and the part is on the van, the repair is done there and then. If a part has to be ordered, the boiler is left safe and a return visit is booked.
Ask to see the ID card before any work starts. Check the register
Vaillant, Worcester Bosch, Ideal, Baxi and more, with common parts for them kept on hand.
The call-out price before anyone sets off, and the repair quoted in writing before it starts.
Insured for work in your home, and a registered company, number 16834283.
Recommendable plumbing service
Chris has recently done a few jobs for us. We had him service our boiler and his friendly, helpful, clear and transparent approach meant that we subsequently contacted him when we had an emergency plumbing issue in the bathroom a few weeks later. Chris offered next day availability to resolve this and did a good job again. Would recommend him for transparent, prompt, and professional plumbing work.
Great work
Great work by Chris and punctual too
Every review here is a real one from the InstaGasWorks Google listing, word for word, so each can be checked at the source.
5.022 reviews on Google
Read all reviews on GoogleReally great service, sorted our problem even late in the evening, many thanks.
Amazing service! Issue with my boiler was fixed within 24 hours despite needing a new part to be ordered
Called chris out for an emergency. He isolated and made safe the problem late Sunday evening. Three days later he’s fitted the new part. Professional and efficient service.
Fantastic company. I had an urgent problem with my boiler. Chris fitted me in quickly, came round, talked me through what was wrong, and fixed it there and then. Really good service and excellent value for money.
Couldn’t recommend him highly enough. Absolutely brilliant service from start to finish. He was friendly, professional, knowledgeable and went above and beyond to get everything sorted for me. He explained exactly what the issue was, kept me updated throughout and made sure everything was working properly and safely before leaving. Really reliable, easy to deal with and clearly takes a lot of pride in his work.
Chris was very kind and professional. He worked cleanly and left everything tidy afterwards. I really appreciated his friendly service and would happily recommend him!
Chris was great. I needed a gas stove top replaced and he helped confirm if the model I selected would fit the dimension via messages. Chris also gave me a time range for the work involved and clear communication of costs. On the day he arrived promptly, finished the work and did all the safety checks. I would recommend Chris.
Absolutely fantastic called Chris to decommission an old gas fire in a hurry and he came same day and did a great job, great price, great attitude 10/10
Chris was great for our boiler service. I reached out to him on Thursday afternoon and he came over the next day promptly at the agreed time. He was friendly and got the job done quickly, with reasonable and transparent pricing. I’d be happy to recommend him to anyone
Chris overcame several problems when dealing with the old gas pipes, removing two large radiators and capping off the connections to one radiator that was not being replaced. He also happily fitted in with my schedule for the complete renovation of my lounge, which meant making several visits. The new designer radiator weighed a hefty 51kgs but Chris was undaunted and managed to lift it onto the new brackets - with mainly verbal encouragement from me! All in all, a great job. Chris worked hard, dealt with the unexpected problems professionally, and I am very pleased with the result. I have no hesitation in recommending him.
Chris was amazing. He was responsive, helped problem solve over text, and fixed our hob issues in person very efficiently. 100% recommend.
Chris helped to install a gas hob and electric oven - worked very collaboratively as we swapped out for a freestanding oven. Would recommend and use again
Thank you so much for your services. I would highly recommend 👌. …
Prompt and effective repair on my boiler
Excellent service. Efficient and reliable. Chris has a great manner in the way of explaining what needs to done and how he will do it. No hesitation in recommending Instagasworks and I will contact again if needed in the future
Instagasworks plumbing and Heating. This is the most competent and efficient company with regard to the installation and maintenance of heating systems that I have ever come across. They have just installed a new boiler in my kitchen. This company has earned the four star rating that I have awarded.
Amazing service, friendly and very hardworking
Chris is kind and helpful. He is quick to respond and goes above and beyond to help.
Amazing customer service, chris goes over and beyond!
I can’t recommend Chris at Instagasworks highly enough. Over the course of a week he resolved a high pressure issue on my boiler which had been ongoing for over a month. He explained everything really clearly and dealt with the issue with integrity, which involved replacing a heat exchange plate. I never got the impression he was trying to rip me off and his prices are fair and competitive. My boiler is located in an awkward location but he worked with me to ensure he could complete the work, and I’ll definitely be using his services in the future.
Great service from start to finish. Arrived on time, explained everything clearly, and got the job done quickly and neatly. Would definitely recommend!
Still not sure? Read the full FAQ or call 0208 226 0205 and describe what the boiler is doing.
The faults behind most emergency calls, explained in plain terms. All boiler advice
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Why a boiler loses pressure, the checks you can safely do yourself, how to top up the pressure, and the signs that mean it is time to call a Gas Safe engineer.
Vaillant boiler fault codes explained for London homes. What F.22, F.28 and F.75 mean, what you can safely check, and when to call a Gas Safe engineer.
A winter plumbing checklist for London homes: lag loft pipes and tanks, protect your boiler's condensate pipe and know what to do if a pipe freezes or bursts.
How to decide whether to repair or replace a boiler: its age, the cost of the repair, parts, warranty, efficiency and safety, with a simple rule of thumb and the questions to ask an engineer.
Every area covered is within about 25 minutes of the base on Mitcham Lane, Streatham. That is the reason the patch is this tight: an emergency service that can't get to you isn't one.
Battersea · Putney · Balham · Tooting · Wandsworth · Clapham · Streatham · Wimbledon · Colliers Wood · Morden · Dulwich · Croydon · Thornton Heath · Norbury · Sutton · Mitcham · Carshalton · Wallington · All areas covered
Call any time, day or night. You will get the price and a realistic arrival time before your engineer leaves, and if it can wait for a booked visit, you will be told so.
Rated 5.0 on Google
Phone answered 24/7. Same-day visits when the diary allows.
Public liability
£2 million insured
Plumbing qualifications
City & Guilds and NVQ
