Plumbing and Heating in Hertfordshire

When you are looking for a contractor for plumbing and heating services, in Hertfordshire or anywhere else for that matter, you naturally need to have absolute confidence that they are fully qualified and hold the relevant certifications for the job they are carrying out. We provide this assurance for you in the form of fully-guaranteed and insured work, testimonials from our many satisfied customers and the coveted Which? Trusted Trader endorsement which is only awarded after a rigorous assessment process. Most importantly of all, all of our team are experts in their particular field. You can be sure that when you choose us, you are in the hands of trustworthy, reliable professionals.

Our team offers:

  • Fully-qualified and experienced plumbers
  • Fully-qualified and experienced Gas Safe engineers
  • Friendly and caring support staff
  • Local knowledge
  • Same day appointments
  • Underfloor heating also a speciality

Call and speak to an engineer at our Welwyn office to discuss your requirements.

01438 712 712


Our expert plumbers are fully qualified to deal with all aspects of plumbing work, from routine maintenance like leaking taps and pipes, problems with the water mains supply within your property to repair and replacement of cold and hot water tanks, pressurised cylinders and immersion heaters.

We also offer a full supply, upgrade and install service for your bathroom, en suite or shower room, as well as a full plumbing service for new builds or refurbishment of existing properties. No job is too big or small.


Often, it’s not until we experience a breakdown that we realise just how much we rely on our boilers. Here at Stagg Plumbing ↦ Heating, our fully-qualified Gas Safe engineers can take care of your boiler to ensure that your home stays warm during those cold winter months, and that your hot water never lets you down. In the unhappy event of your central heating breaking down, we can repair or upgrade your boiler, radiators, valves and pumps. We also carry out full gas central heating system installations.

Better still, you can reduce the risk of breakdown by taking out one of our contract cover packages. All boilers should be annually serviced, for your safety and to ensure they are performing to their optimum level and not costing more than they should be to run. We offer care packages payable on a monthly or annual basis to keep everything in working order and to protect you from unexpected costs if the worst should happen.

Call us on 01438 712 712 to discuss your plumbing and heating requirements and see how we can help you.

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Speak with our experienced staff…

Qualified Plumbers

Qualified Gas Safe Engineers…

Tried and trusted

We understand that you want assurances that your plumber is competent and safe. We’ve been in the business for many years and boast a loyal and satisfied customer base. Their testimonials speak for themselves. We’re confident you’ll be happy with us too, but we fully guarantee all our work for your peace of mind. And if that wasn’t enough, our services have been rigorously assessed and won us Which? Trusted Trader status. You really couldn’t be in better hands, so give us a call now.

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We are reliable and trustworthy plumbers in Hertfordshire. All our plumbers are fully qualified.

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Boiler Servicing

We are reliable and trustworthy engineers in Hertfordshire. All our gas safe engineers are fully qualified.

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Boiler Repair

We know how much you rely on your boiler. Our professional team provides boiler repairs on a range of models.

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Boiler & Heating Installations

Our professional team can install full or part new systems to meet your requirements.

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Power Flushing

Our professional team can power flush your systems help prolong their life and make them more efficient.

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Underfloor Heating

Our qualified engineers can service and repair your underfloor heating.

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Landlord Services

Our gas safe engineers can carry out boiler services and CP12s in line with current landlord regulations.

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Our offices are in Welwyn in the heart of Hertfordshire. We cover the whole of Hertfordshire plus the neighbouring counties of Bedfordshire and Buckinghamshire as well as North London. Our plumbing and heating services include the following towns:

  • Welwyn Garden City
  • Stevenage
  • St Albans
  • Hemel Hempstead
  • Watford
  • Barnet
  • Finchley
  • Harrow
  • Milton Keynes

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Our Accreditations

Stagg Plumbing Accreditations. Contact us for details