— Our Services
Boiler Installations
— About This Service
Expert Boiler Installations from OneHeat Limited
Our Gas Safe-registered engineers lead every installation, backed by City & Guilds qualifications and CHAS health & safety standards. We run a full site survey, match boiler types to property age and layout, and carry out certified installation and commissioning. Finance plans and landlord certification available.
184 Five-Star Reviews
— Our Process
How It Works
Site survey & recommendation
A Gas Safe engineer visits to assess pipework, heat loss, existing controls and flue options, then recommends boiler models and a clear scope of work.
Certified installation day
Our team install the chosen appliance, replace or adapt pipework where needed, fit controls and complete all gas connections to Gas Safe standards.
Commissioning & handover
We pressure-test and commission the system, demonstrate operation and controls, supply paperwork and issue any required Gas Safe certificates.
— Benefits
Why Choose us for Boiler Installations?
Local Barnsley engineers
Based in Barnsley with regular work across Wakefield, Rotherham and Sheffield, our team understands local housing stock — quicker response and smoother installs.
Qualified, accredited & insured
All engineers are Gas Safe registered, City & Guilds qualified and CHAS accredited; we’re IDEAL Max accredited and can issue landlord gas safety certificates.
Finance and aftercare
Practical finance plans and a finance calculator make spreading the cost straightforward, and our award-winning team provides ongoing servicing and rapid call-outs.
What’s included: a full site survey, product selection guidance, supply of the chosen boiler and components, certified installation, commissioning and handover paperwork. Installations cover conventional boilers, combi replacements and system upgrades for Victorian terraces, semi‑detached homes and modern new‑builds across Barnsley and nearby towns.
How to book: arrange a survey or discuss models by calling 07956098150 or emailing info@oneheatltd.co.uk. We can also run through finance options and provide a written estimate after the survey.
— OUR ACCREDITATIONS
184+
Five-Star Reviews
7
Specialist Services
6+
Industry Accreditations
13+
Areas Covered
— FAQ
Frequently Asked Questions
Most straight swap installations are completed in one day, with commissioning and system checks finished before we leave. More complex installs or system upgrades (radiator replacement, additional pipework) may take longer and will be confirmed during the site survey.
— Related Services
Other Services We Offer
— REVIEWS
What Our Customers Say
— Malcolm Baker
Google2026-06-03— Craig Cardwell
Google2026-05-27— New Reviewer
Google2026-05-19