Renewable Energy

As renewable energy installers in Dorset & Hampshire we have qualifications in energy efficiency and are able to advise you on the most sustainable and cost-effective renewable energy systems for your needs.

Plumbing & Heating Solutions

Our plumbing and heating services in Dorset & Hampshire include hot water cylinder repairs and installations, instant hot water taps, water softening, heating installations, repairs, maintenance and upgrades for oil, natural gas, LPG, multi-fuel, solar and air source heating systems, and much more!

Gas Installation & Servicing

Boiler installation, servicing and repairs, landlord safety certification, general safety checks.

Wood Burners

We design, supply and install all types of wood burner systems. We are able to install heating and hot water systems that operate from your wood burner.


The Holt team are fully qualified and Gas Safe

Approved to carry out all domestic and industrial plumbing and heating work