Jump Links

Heating and renewable energy

for commercial, landlords and domestic.

R J McCulloch Ltd.

Windhager Biomass Boiler


Heat Pumps & Biomass

We are experienced in the installations and servicing of Air Source Heat Pumps and Biomass boilers and are approved installers for Mitsubishi and Windhager.

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Plumbing & Heating

Our commercially trained staff are able to undertake a variety of works and have gained significant experience in various sectors.

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Plumbing & Heating

We are fully accredited and experienced in all fields of work including Gas Safe Registration, OFTEC Registration and Green Deal

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Passionate about Plumbing & Heating

RJ McCulloch are an MCS and Green Deal approved supplier and installer in South West Scotland specialising in renewable energy systems.

We consult on, install, service and repair renewable energy heating systems such as air source heat pumps, ground source heat pumps and biomass boilers.

We also offer traditional heating and plumbing services.

Ross McCulloch opening the van door

Energy Performance Certificate (EPC)

We calculate energy savings prior to work being carried out to ensure your system will work efficiently.

Funding schemes

Fully accredited with disclosures and safety certifications for boiler replacement under the Scottish Government's Warmworks scheme.


All works guaranteed for two years. Equipment minimum 1 year varying by manufacturer.