Pellet &
Wood Chip

Log Boiler Installation, Repair & Servicing


Heat Pump Installation, Repair & Servicing


Boiler Installation, Repair & Servicing

Green Giant Services

Green Giant Services are the leading provider of specialty boiler services including biomass, heat pumps and hydrogen fuel cell installation, servicing and commissioning to the UK for over 18 years. With our comprehensive service, we are here to help.

viessmann boilers

Boiler Servicing

Biomass boilers are specialist pieces of equipment which need to be serviced, repaired & maintained by specialist engineers to ensure prolonged economic life and efficiency.

Boiler Maintenance

As biomass specialists, we are able to service and maintain Viessmann Biomass boilers and Stiebel Eltron Heat Pumps, whether installed by ourselves or a third party.

Boiler Repair

If you are experiencing ongoing problems we offer a repair service for your biomass boiler. We carry out prompt and reliable biomass boiler repairs.

Boiler & Heat Pump Services

Boilers We Work With

We specialize in a variety of Viessmann Boilers. Below is a list of the boilers and heat pumps we work with. If yours is not on the list don't panic. We are expert Viessmann and Stiebel Eltron specialists and if your boiler or heat pump is an old one, or is not on the list, that still requires servicing and maintenance we can do it for you.

Regular Boiler Servicing

To make your heating system more efficient, reliable and problem free over time, it is important to have your bolier system serviced regularly and it is beneficial to have a maintenance contract of some sort so that you system gets the same level of care and attention each time. Regular servicing extends the life of your heating system and makes sure that energy is being used cleanly and efficiently. By doing this, you will be helping to protect the environment while saving on heating bills – without compromising heating and domestic hot water convenience.

biomass boiler cross section 300rf viessmann

The benefits of regular servicing

  • Greater efficiency and extended service life of the heating system, together with greater operational reliability
  • Savings on heating bills and lower consumption of resources due to efficient use of the input energy (experts rate the potential savings at about 5 to 7%)
  • Constant high level of heating and DHW convenience
  • Heat will be generated with reduced CO2 emissions due to economical and environmentally responsible operation

Just like your car, your boiler should be serviced at regular intervals. Comparitively, if you car ran for a similar number of hours as your boiler, then it would run up around 60,000 miles a year. This highlights why it's important to have your heating sysetm serviced at least once annually.

Heating system servicing requires expertise. Let Green Giant Services Ltd carry out your regular heating sysestem maintenance, because a service professional will always check all system components thoroughly for contamination and wear. That also includes checking the safety and control functions.

Green Giant Services Ltd engineers are trained up to the highest standards on different brands of biomass boilers and ground and air source heat pumps to carry out installations, servicing and maintenance while working directly with manufacturers and main UK distributors to uphold manufacturer warranty on systems. We install and maintain all sizes of biomass boiler from the domestic 10kW pellet boilers to 500kW wood chip/pellet systems.

We provide support covering the whole of Scotland and the north of England. Our breadth of service coverage represents the most comprehensive dedicated biomass heating service in the sector.

green energy


Biomass is less prone to severe price fluctuations than fossil fuels and, being sustainable and CO2 neutral, makes a significant contribution to preserving quality of life for future generations.

Heat Pumps

Heat pumps use energy from underground, the groundwater or the air for DHW and central heating. The heat pump is a thermodynamic heating system. It takes environmental energy and converts it into heat for your home.

German Boiler & Heat Pump Specialists