07747 018372
01367 718661

About Mark Hancox

I am a Boiler Engineer with 30 years’ experience in the heating industry trading as White Horse Boiler Services. I trained with a reputable Oxford company specialising in all aspects of boiler servicing and repairs and then went to work for Worcester Bosch where I gained an in-depth knowledge of Worcester Bosch products. Since then I have been self-employed running my own business’s and get much of my work through word of mouth and recommendation, so please don’t keep me a secret.



Gas Safe Registered (formerly Corgi)

  • CCN1 Domestic Natural Gas Safety - Expires 17/03/2020
  • CPA1 Combustion Performance Analysis - Expires 17/03/2020
  • CENWAT Install, exchange, commission, disconnect, service, repair, and breakdown of domestic gas fired boilers and circulators, combination boilers, storage water heaters and instantaneous water heaters - Expires 23/01/2018
  • CKR1 Install, exchange, service, repair, breakdown and commission domestic gas cooking appliances - Expires 23/01/2018
  • HTR1 Install, exchange, service, repair, breakdown and commission domestic open, balanced and fan assisted flued gas fires and wall heaters - Expires 23/01/2018
  • UHWSS Install, commission and service domestic vented and unvented hot water systems - Expires 24/06/2019
  • CONGLP1PD LPG Safety in Permanent Dwellings - Expires 25/05/2019
  • City & Guilds Level 3 in Energy Efficiency for Domestic Heating


Oftec Registered

  • Service and Commissioning - Pressure Jet Boilers
  • Installation - of bio liquid fuelled fixed combustion appliances and systems
  • Installation - of oil fuel storage supply systems connected to fixed combustion appliances


Professional Development

  • H & S Operatives - Certificate of Training
  • Steps and Ladders - Certificate of Training
  • Confined Space Entry Procedure - Certificate of Attendance
  • Towers; Category- User level - PASMA: Certificate of competence
  • Manual handling-Certificate of Training
  • Asbestos Awareness - Certificate of Training
  • Worcester Accredited Installer - Gas and Oil Boilers
  • WREG Water Supply (Water Fittings ) Regulations 1999
  • BPEC Level 3 Award in the Installation and Maintenance of Heat Pumps Systems

Please feel free to contact me at any time for help and advice by calling 07747 018372

How often does a boiler need servicing?

The boiler is an important part of your home, ensuring you have both central heating and plenty of  hot water.

Preventing problems with your boiler is therefore essential to avoiding any unnecessary disturbances to your daily routine.


What will White Horse Boiler Services do during the service?

  • Gas pressure checks to ensure the boiler is operating at the correct gas pressure
  • A flue test to ensure there are no unsafe emissions from your boiler
  • Inspect and test your boiler and controls to make sure they are operating safely
  • Visually inspect the boiler to check for corrosion and leaks
  • Leave you with a checklist and report containing all the information about the works carried out


Carbon monoxide poisoning can be fatal and is caused by faulty or poorly maintained appliances. It is vital that you get your boiler and gas appliances inspected and serviced regularly to make sure they are working as safely and efficiently as possible.


Regular servicing as a preventative measure

One of the best ways to ensure that your boiler is there for you when you need it  most is to ensure that it undergoes regular servicing. This can go a long way to keeping it in good working order all year round.

Regular services will ensure that your boiler is working safely, as well as effectively. The peace of mind that comes with the knowledge that your boiler is safe is always well worth the price of a service.


Maintaining efficiency
Carrying out boiler servicing is also a great way of making sure that your boiler is running as efficiently as possible. A boiler which isn’t working to full efficiency is sure to be costing you money on your fuel bill, so it’s likely that the cost of a service will be quickly offset.

Boilers today are more efficient than ever before, but even the newest models can become clogged in time. Whatever your boiler’s age, you’ll stand to make significant savings on your household energy bill by carrying out regular boiler checks.