Post your job for free. Get quotes. Read reviews.

Post your job for free. Read reviews, get quotes, and see tips on hiring the right person.

What type of tradesperson do you need?

What type of job is it?

The quick way to find a local Gas Boiler - Repair specialist in Welwyn, Hertfordshire

There are 814 Gas Boiler - Repair specialists in Welwyn, and last month we helped homeowners get quotes for their home improvement jobs.

Browse Gas Boiler - Repair specialists in Welwyn, Hertfordshire

Take a look at our Gas Boiler - Repair specialists profiles, read reviews and request quotes directly.

Please specify a location
Please specify a trade

SJ Builders

Gas Boiler - Repair in Welwyn

Latest homeowner review

Reviewed by Dominique on 21/1/2016

I thought Sean was polite and friendly and worked efficiently. I will definitely use him again if I need any painting or decorating done.

Harmer PHEG is a highly experienced and professional gas heating & plumbing company. We are based in Herts and North London, With over 30 years' experience, and Gas Safe Registration, you can be sure that our service is safe and to a very high standard.

Latest homeowner review

Reviewed by Scott on 28/10/2014

Lovely lad great job done a while ago now, would defo recommend him to people.

24 hour emergency callout

Latest homeowner review

Reviewed by Calvin on 8/6/2022

R.M Plumbing and Heating is a friendly, local, fully qualified, profressional tradesman, with over fifteen years experience in the plumbing industry. We specialise in out of hours working, without charging the extortionate out of hours fees!

Latest homeowner review

Reviewed by Hannah on 4/9/2016

We found Rob to be very hard working and highly skilled and very flexible when coming up against unforeseen snags! Would thoroughly recommend.

We are dedicated to quality and details.

Latest homeowner review

Reviewed by alex on 26/1/2017

Excellent work, high quality. Professional pleasant guys. Danny and his team motivated hardworking, clean tidy 6 months work , very good all-round. Multi skilled trades within company of brothers. Minimum amount of fuss , trustworthy Non smokers, very reliable, kept me updated , good knowledge . Fitted Wren Kitchen,built porch extension , converted garage to studio apartment decorating,plumbing, tiling , new bathrooms and shower rooms. Built fitted wardrobes. internal external doors.

Latest homeowner review

Reviewed by Chris on 27/2/2018

Excellent, very pleased.

Family business please feel free to look at bedford.plumbing for further information. Fully qualified heating and hot water engineers. boiler servicing, repairs and break downs, unvented hot water cylinders serviced and repaired.

Latest homeowner review

Reviewed by Eugene on 2/5/2017

I've now used Mick several times. He's very conscientious about the quality of work he delivers and always obliging if there is any remedial work to be carried out after the job is complete. He replaced my boiler and hot water tank and will always advise what's best with his many years knowledge. He's also fitted a new gas hobby and done some maintenance on radiators. Fully Gas Safe registered. He's not always the quickest to reply to emails or text but I understand how incredibly busy he is.

I am a small reliable business based in Aylesbury. I will complete any domestic maintenance required and gardening service.

Latest homeowner review

Reviewed by Keith on 2/4/2013

Arrived on time. Did the job well. Very reasonable charge. Recommended.

geo-tlamp

Gas Boiler - Repair in Welwyn

-Extensions -Conversions -New build ,Refurbishments Garage conversion Flat roofs And more.

Latest homeowner review

Reviewed by Kim on 3/11/2024

Piotr was meticulous in his work and very knowledgeable. He did a great job for me and I would use him for any further projects I have.

I am skilled mutlitrader with over 10 years experiences. I usually work together with other multitrader as a team.

Latest homeowner review

Reviewed by Jo on 9/4/2013

Very professional, punctual and polite. I would happily employ this tradesman again and highly recommend him.

ARTMAR

Gas Boiler - Repair in Welwyn

Hello If you looking for the best builders team. You're find on us. We can do all work around your home inside and outside: kitchen fitting, bathroom fitting, painting, tailing, carpeting, decorating, houses extension, garage conversion, refurbishment.

Latest homeowner review

Reviewed by sonal on 28/3/2013

I needed some help with my shower as water was leaking down through to kitchen. Two lovely trustworthy and polite gentlemen. Gave me best value options for the job and completed to a very high standard. Also did a few other bits like replacing missing tiles and making my cracked ceiling look new again. Very tidy and took their time to finish job. I have a nice bathroom again. Thank u!! Will definately use again and will be recommending to friends and family! Very reliable and good value for money.

Latest homeowner review

Reviewed by Kay on 15/6/2013

Responded very quickly and is a pleasure to deal with. Very helpful and good quality work. Would recommend.

Latest homeowner review

Reviewed by Carol on 9/8/2013

Mark was totally reliable and helpful.He kept me informed on progress at all times and did a great job. Thank you

Accuracy,fast,clean and tidy.Ability insurance.

Latest homeowner review

Reviewed by daniela on 11/5/2013

fast and clean

KalyGas

Gas Boiler - Repair in Welwyn

I am gas safe registered plumbing/heating engineer with years in trade.I offer top services at competitive price.Services I offer : Gas Boiler Instalation,Boiler services and repairs.Landlord certificates,Boiler swap.

Latest homeowner review

Reviewed by Joe on 7/2/2016

Kaly the job was urgent and kaly responded swiftly and availability was no problem he explained everything about the product he gave a thorough explanation of the boiler and how to clean the magnet filter and was willing to come over next week free of charge to check on the progress he was amazing. He made sure everything was working perfectly and cleaned up thoroughly we can highly recommend him as the standard of work was excellent and the cost was extremely reasonable. Thanks Kaly

Established over 80 years ago London Builders are FMB & NHBC registered & operate in Greater London providing a comprehensive range of services for residential properties from design and construction through to refurbishment, repairs & re-decoration.

Latest homeowner review

Reviewed by Brian on 24/4/2017

They were really professional compared to the other builders that came and contacted me. The Project Manager was also on hand to answer any questions I had and offered me adviced on how best to move forward. We ended up refurbishing our entire bathroom which is looking great now. I would highly recommend London Builders.

Latest homeowner review

Reviewed by David on 24/7/2015

Excellent service and good price. I already plan to use again on my next job.

Latest homeowner review

Reviewed by Jacqueline on 30/3/2014

A couple of very helpful gents who came and gave me a price and then turned up when they said they would and completed the job with minimum fuss. One of them even came back to turn on the boiler, which they turned off, whilst we were looking up how to do it. Would recommend to anyone.

Latest homeowner review

Reviewed by jose on 30/10/2014

All work done for me by KD construction was excellent. Work men are very polite and friendly. I would recommend KD constructions to all my friends.

Khanz

Gas Boiler - Repair in Welwyn

We are a based in London and pride ourselves with an eye for end result. As a homeowner or landlord, we would like to assure you that we are honest, trust worthy professionals team dedicated to deliver small or big projects with full support all the way.

Latest homeowner review

Reviewed by Mudassar on 1/3/2017

A tradesman with thorough understanding, knowledge and experience of what's required and how to complete the projects with full Dedication. I highly recommend Mr Khan for any small or big project, and would call him myself anytime I need a builder, carpenter, handyman, kitchen fitter, plumber etc.

We are pleased to continue providing a professional and dependable service to all our clients, fully recognizing the essential role that high-quality standards contribute to our success. Looking forward, we anticipate that the robust relationships we are cultivating will result in an increased number of satisfied clients, fostering further recommendations and sustainable growth.

Latest homeowner review

Reviewed by Angela on 13/11/2015

Fedor and his team are polite, hard-working and extremely talented. It was a complicated job and Fedor handled it brilliantly. We are absolutely delighted with the beautiful London Stock brick wall that has been built. We would definitely recommend Fedor and Cuicut Construction, and will certainly use them again in the future.

Hi my name is Kalium Fletcher, I undertake all central heating issues, boiler installation,servicing and repairs, landlord certificates, and plumbing work. I give transparent advice so there are no hidden costs. I believe I offer a friendly honest reliable service, with customer satisfaction and competitive pricing being my main goals.

Latest homeowner review

Reviewed by David on 27/2/2025

At OCTOPUSBUILDERSLIMITED, we pride ourselves on our extensive 16 years of experience in the construction industry. Our dedicated team works collaboratively to handle every aspect of your building project from A to Z. Whether it’s residential or commercial, we ensure quality craftsmanship and excellence in every job. Let us turn your vision into reality!

Latest homeowner review

Reviewed by NORMAN on 1/10/2024

Great job and would definitely rate it higher if I could. Will keep in mind if I need other jobs done around the house.

Brits Construction Projects Ltd. Provides wide range of services which mainly include Major Extensions & Conversions, Refurbishment, Renovation, Property Maintenance and new Builds works in Privat Sector. Please contact; Fawad Ali Qamar(Contract Manager)

Latest homeowner review

Reviewed by Ola on 30/3/2016

Fawad is diligent, professional and his pricing is very reasonable. He is an easy person to get on with and his workmen did a very good job and even cleaned up afterwards. I will definitely use Fawad service again and I highly recommend him.

We are a dedicated team of painters plumbers gas engineers and general handy men , all our employees are fully trained and qualified in there chosen trades, we have plenty of experience ranging from hospitals, building sites & domestic housing work is carried out to a professional standard and ensure all our customers are happy.

Latest homeowner review

Reviewed by Peter on 9/10/2024

Came to my property within the time period quoted (on both occasions) and was able to diagnose and fix the problem promptly in line with the quote, with a friendly demeanour throughout.

DP Plumbing and Heating is based in Bow (London). It has over 15 years of experience in plumbing and gas work. We cover all London areas and around capital too. All aspects in plumbing and gas are covered, plus emergencies and breakdowns.

Latest homeowner review

Reviewed by subhash on 5/8/2024

Millennium plumbing and heating Is a family run business we have been in business together for over 10 years with experience in commercial and residential properties.

Latest homeowner review

Reviewed by Liam on 15/2/2020

Can’t fault the work or price

Hello I’m Joe, the proud owner of JB Pipework & Plumbing, A little about us With many happy and returning customers over the last 20 years, you can be sure of being well looked after. Our aim is to provide a stress free project, delivered in a manner that I am confident will exceed your expectations. I work with a small team of trusted colleagues, who communicate and work together well. Our customers are accustomed to the outstanding quality of projects we complete, by sourcing quality materials with experienced installers we create truly bespoke masterpieces lasting our customers many years. Up to 1 year guarantees are included as standard on all completed work. Main work we undertake Bathroom Designer Bathroom Fitter All aspects of plumbing domestic and commercial Availability We offer a 24/7 service, you are welcome to contact our team at a time that suits you. If for any reason you are unable to contact us, please request a 'call back'. Thank you for taking the time to consider our company’s profile, I look forward to hearing from you.

Latest homeowner review

Reviewed by Martin on 10/6/2025

Joe responded to my advert very quickly. He resolved the immediate leak quickly and returned the next day with a new radiator to resolve the problem completely. Very efficient. Would definitely recommend.

Good man worker with full team Many year experiences and properly Quotation free for the all customer

Latest homeowner review

Reviewed by Frank on 6/9/2020

I would recommend Catalin to anybody, he turned up on time to do the job and did an excellent job. He left my premises spotless after finishing the job. He also charges a reasonable rate.

I highly recommend AYG Construction , very good job quickly done very reasonable quote, thanks to Adrian for his hard work. Finished double storey extension on time and very helpful throughout.Excellent quality and price. Welcome back any time. Thank you!

Latest homeowner review

Reviewed by Mark on 20/1/2016

Adrian and his team met or exceeded my expectations, always willing to match my needs and finished the job on time and within budget.

Elite Heating and Plumbing Ltd are a Gas Safe registered plumbing and heating company operating in Watford, Bushey, St. Albans, Rickmansworth, Radlett, Stanmore, Tring, Aylesbury and surrounding areas in Hertfordshire, Middlesex and Buckinghamshire. We are the chosen contractors for major Estate Agencies such as Imagine, Signature Estates, Claytons, Townsends and property maintenance groups and Housing associations such as Reside, Veritas and Harouni Group. Our pricing is transparent, and estimates are free. We pride ourselves on our reliability and tidiness on the job as well as keeping our customers informed every step of the way. We are a limited company with £5mil public liability, so you can feel safe when we are in your home. We are also a family run company which means you will always receive a personal touch and consistent customer support whilst you can expect the most professional results. Our services include, but are not limited to: Boiler Installations and replacements Boiler servicing Gas Safety Certificates Boiler and central heating breakdowns General domestic plumbing Gas pipe re-runs and installation No matter how big or how small. You can always expect a friendly voice at the end of the phone, and we will always do our utmost to get to you as soon as possible.

Latest homeowner review

Reviewed by John on 4/4/2019

Not sure which company attended. He didn't do a proper job, even though he was here for a long time. I still have the same problem and I suppose I'll have to book Br Gas to put things right. Regards, JF

We have been established since 1999 and have offices in St Albans & St Neots. All engineers are highly Qualified with many years of experience. We offer a reliable and professional service covering all types of Plumbing & Heating works.

Latest homeowner review

Reviewed by nick on 2/5/2019

Excellent service... No fuss and gave great advice post job

Latest homeowner review

Reviewed by Andrew on 25/6/2012

Quick and efficient worker. I would use this tradesman again.

We provide Domestic Gas and Plumbing solutions for your home, we fit heating systems all the way down to taps

Latest homeowner review

Reviewed by Michael on 5/3/2024

Very polite and good trade person I am happy with work

All your kitchen,bathroom and tiling needs. Also renovations and alterations

Latest homeowner review

Reviewed by tracey on 15/8/2015

Brilliant service, can't fault anything and will definitely use again

Good Homes

Gas Boiler - Repair in Welwyn

We are a small business specializing in bathroom refurbishment & plumbing We carry out from a replacement tap washer to a full bathroom refit. We offer a free quotation service.

Latest homeowner review

Reviewed by Stella on 30/12/2014

I was ever so happy with the work Trevor carried out. Not only was he reliable, professional and priced competitively but Trevor is a lovely individual and it was a pleasure to meet him. Would definitely recommend him.

Cliff Smith

Gas Boiler - Repair in Welwyn

Latest homeowner review

Reviewed by Susannah on 8/2/2019

Cliff was brilliant. Flexible and understanding, we'd highly recommend him.

YOUR REPAIR

Gas Boiler - Repair in Welwyn

Boiler cover & home emergency specialists for homeowners and landlords throughout the UK. No more price hikes! We fix your price for up to 3 years no matter how many times you claim.

Latest homeowner review

Reviewed by Nick on 26/5/2016

Arrived on time. The job was completed quickly and professionally. Highly recommended.

I started HPS Plumbing and Heating Services 5 years ago and since then I have traded as 'a one man band' type of company. That way I can stay a small enough company to offer my clients a personal touch kind of service coupled with 25 years experience.

Latest homeowner review

Reviewed by David on 8/7/2015

Very helpful and friendly! Excellent work.

We are a small but trustworthy and hard working team with many years of experience in building trade.We limit the number of jobs running at one time so that we are able to offer attention to every detail & deliver quality service on time &on the budget.

Latest homeowner review

Reviewed by Nicola on 9/11/2013

Had a sliding door fitted wardrobe from B&Q fitted. Hard working guys. Did a good job which we are happy with

Century Electrical Services Ltd offers a comprehensive electrical service; from design to installation right through to aftercare with tailor made service & maintenance contracts. We are passionate in believing our standards and prices will go unbeaten.

Latest homeowner review

Reviewed by Richard on 19/9/2013

Very nice people, thorough work. Had some snags but not surprising given it is a 1930s house with some bizarre wiring, but they took it all in their stride.

A Gas Safe family run company with over 15 years experience in Heating and Plumbing. We are Worcester Bosch and Vaillant accredited installers/engineers and Which? best engineers. Breakdowns, servicing, powerflushing and full installations available.

Latest homeowner review

Reviewed by Alex on 1/11/2017

Excellent service and v good value.

Latest homeowner review

Reviewed by Paul on 10/5/2013

friendly, reliable and honest work. will use again. work completed within a week of submitting job.

Latest homeowner review

Reviewed by Alison on 7/6/2013

While the work has been excellent Sterling Construction have left a job half finished for over seven months. Their reliability leaves a lot to be desired which is a shame considering the first job they completed was carried out so well.

We are building and construction company with more then 15 years of experience Let us turn your house into a home All our work is finished to high quality standard

Latest homeowner review

Reviewed by Seema on 15/8/2014

I used AGL to decorate my 5 bedroom house in W12 in April 2014. The standard of the work was excellent. They are experienced and were able to come up with practical solutions to issues that arose. They were able to carry out addition electrical and plumbing work. Their quote was competitive and transparent. They repsonded promptly to calls and emails. AGL were trustworthy and reliable and I have since made several recommendations to friends. I would definitely use them again.

Akoni is a building company who can provide you with peace of mind and satisfaction. Our primary aim is to make sure our clients are respected and listened too with what they want to achieve. Over 20 years experience previously known as Aquafix which was predominantly bathrooms and heating systems. We branched out into our own developments and renovations. We now cover all trades and can supply you with the best results. All trades are fully qualified with years and years of experience. We aim to work closely with our clients from start to finish and use some great designers, architects, and structural engineers to help the process easy and take the stress away from you.

Latest homeowner review

Reviewed by Tom on 9/4/2025

Dan and his team were truly exceptional from start to finish! A very talented and highly professional team that made sure we were actively engaged on every step of a large project, covering nearly every trade possible, with one clear and obvious intention - to make all of our aspirations come true. The attention to detail on every aspect was superb, alongside excellent craftmanship delivering a tremendous finish. The Team were punctual, very friendly, always enjoyable to have in our home! Highly recommended

Ecorod Ltd

Gas Boiler - Repair in Welwyn

We are a family run business with over 35 Years experience in the Plumbing Heating Drainage and Water Softening scopes of works, Working in the Herts Beds Bucks and North London areas. We offer a 24hr emergency service. We also sell rocksalt and ws salt.

Latest homeowner review

Reviewed by Joy on 9/6/2013

Thank you for your response. With regard to budget the category "up to £100" is the lowest limit one can specify on this site, with regard to VAT there was never any suggestion that this should not be paid. My husband accepted and paid your bill at the time it is only subsequently that we have found out from others that this was an excessive amount to be charged for this work. Our mistake was not getting a number of quotes before instructing you to do the work. We will not make this mistake again.

We are an electrical & multi task company with over 20 years customer satisfaction provided. Rewiring,fault finding,lighting and electrical certification.

Latest homeowner review

Reviewed by Riddhi on 4/12/2024

He was quick and very helpful in completing the request. Will definitely call him in the future if we have any other repairs

At DavTom, we're all about upgrading your home experience through top-notch doors and windows. With over 10 years in the business, our small, dedicated team—supported by reliable subcontractors—ensures quality and craftsmanship in every project. We don’t just install; we transform spaces, offering a variety of high-quality options to suit your style. Our services include: Doors: Whether you’re drawn to the timeless appeal of traditional front doors, the space-saving charm of bi-fold doors, or the seamless integration of sliding doors, we have the perfect solution to suit your taste and lifestyle. Skylight: Transform your interiors with the magic of natural light. Skylights are designed to bring the beauty of the outdoors inside, creating a bright and airy atmosphere that enhances your home’s ambiance. Conservatories: Meticulously designed to seamlessly integrate with your home, our conservatories offer a tranquil retreat, connecting you with the outdoors while adding a touch of timeless elegance to your property. Glazing: Our double and triple glazing options not only enhance insulation but also minimise noise, creating a serene and energy-efficient environment. Outdoor spaces: Upgrade your backyard with our all-in-one service, covering pergolas, sheds, and decking. Enjoy the cosy charm of pergolas, practical storage with our sheds, and the perfect gathering spot with our decking options. Repair Service: Cover everything from hinges and handles to glazing issues, ensuring your windows and doors remain in peak condition. Trust us for swift and effective solutions that stand the test of time. Let us redefine the way you experience your home!

Latest homeowner review

Reviewed by Christina on 9/9/2024

Draiton Plumbing is a family run business that's been operating for many years, our tradesmen are fully qualified and very professional in there approach to the task ahead very polite and very clean from start to finish with great customer service skills. we offer a full 24/7 emergency service covering all repairs and emergency issues planned or maintenance contracts, we work along side many estate agents throughout London and surrounding areas supplying all trades from a dripping tap to a full bathroom to kitchen installation giving the same first class service throughout. We offer planned maintenance and 24/7 emergency services contracts for local letting agents in and around London areas.

Latest homeowner review

Reviewed by Ben on 22/6/2025

Completed the job as promised, and came back to troubleshoot. Pricey - but I they have me a quote and I excepted it - and they did everything they said they would. All good.

How our service works

  • Create a job - it's free

    We'll connect you with the right tradesperson, from over 30 different trades.

  • Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  • Check ratings

    Look at each tradesperson's profile page to see their ratings and reviews.

  • Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  • Job done

    Leave a rating for your tradesperson based on quality, reliability and value.


Recently completed jobs

Here's what's been happening in and around your area

Boiler Repair: No Hot Water or...

Service: Hot water / heating / boiler not working Taps have hot water: No Radiators heat up: No Boiler make: Don't know BOILER WHEN ON MAKES A LOT...

Boiler inspection and repair...

Hi there. Our Potterton Prima F gas boiler is connected to a Drayton LP522 programmer (both in the kitchen) and a Honeywell room stat (lobby wall)....

Boiler repair and...

Service: Hot water / heating / boiler not working Taps have hot water: No Radiators heat up: No Boiler make: Baxi My heating system needs...

boiler repair and heating...

Service: Hot water / heating / boiler not working Taps have hot water: No Radiators heat up: No Boiler make: Worcester Bosch My boiler has just...

Glow Worm Flexicom - F 09...

I have a "glow worm flexicom sx" gas boiler. It sometimes goes to Error code "F 09" and stops. I need to either reset or power cycle the boiler to get...

Boiler repair: Glow-worm...

Service: Hot water / heating / boiler not working Taps have hot water: Yes Radiators heat up: Yes Boiler make: Glow-worm I have a "glow worm...

Water dripping out of bottom...

A small amount of dripping water is falling from the bottom of the gas boiler. Repair which probably requires replacing a seal is necessary. A service...

Fit New gas boiler flue

Remove existing gas boiler flue which has a hole in it. Fit new flue.

Swimming pool gas boiler...

The pilot light in my Jandy Legacy swimming pool gas boiler will not stay on. Can you fix it please.

The main radiator is only l...

The main radiator is only lukewarm when the rest of the system is fine. System needs a drain and maybe a pump upgrade

How our service works

  1. Create a job - it's free

    We'll connect you with the right tradespeople, from over 30 different trades.

  2. Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople’s profiles