Find out more about how we are keeping our engineers and customers safe during the Coronavirus (COVID-19) situation.

Find out more about how we are keeping our engineers and customers safe during the Coronavirus (COVID-19) situation.

Welcome to KTH Services Ltd

If you require cost effective and reliable gas and central heating engineers then look no further. Operating throughout the St. Albans and Harpenden area we cater to all domestic and business client’s central heating systems, gas services and central heating plumbing requirements.

Established in 1985, we have the knowledge and expertise needed to ensure that you receive nothing but the best service. Our reputation has been developed through hard work and reliability which is why we are the area’s number one choice for central heating and gas related work.

As of the 1st November 2017 we can offer up to a 12-Year warranty on new Worcester Bosch Boilers if you have the Worcester Bosch system filter fitted by us at same time as the boiler is installed. To keep the warranty valid the new will need to be serviced annually through this period.

Click here for more information on the Worcester Bosch system filter.

For further information or if you need an estimate please contact us.

Central Heating Systems St. Albans


Bronze Cover
£120 per year

Heating Bronze Cover Welwyn Find out more Heating Bronze Cover Welwyn

Silver Cover
£168 per year

Heating Silver Cover Harpenden Find out more Heating Silver Cover Harpenden

Gold Cover
£192 per year

Heating Gold Cover St. Albans Find out more Heating Gold Cover St. Albans

We offer you the highest quality workmanship and services


  • Boiler Installations
  • Central Heating Installations
  • Landlord Safety Certificates
  • Boiler Repairs
  • Energy Efficient Advice
  • Overflows
  • Boiler Replacements
  • Gas Safety Inspections
  • Pump Replacements
  • Boiler Servicing
Harpenden, St. Albans, Welwyn


We provide gas and central heating services to homes and businesses across Hertfordshire and the surrounding areas.

  • Harpenden
  • St. Albans
  • Welwyn
  • Watford
  • Hemel Hempstead
  • Luton
  • London Colney
  • Hatfield
  • Bushey

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