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WilliamHartLtd Limited is a Gas Safe registered plumbing and heating company serving domestic and commercial clients across Preston and the wider North West. We provide professional boiler installation, servicing, gas safety checks and heating repairs, delivering reliable, compliant and high‑quality workmanship.

We are accredited installers for several leading boiler manufacturers, and all gas work is carried out by a fully qualified Gas Safe registered engineer. Our Gas Safe Registration Number is 643764.

Our engineers have also undergone specialist manufacturer training at the Worcester Bosch Academy, ensuring we deliver installations and servicing to the highest technical standards.

In addition, we hold a comprehensive range of industry accreditations and qualifications, including:

• SMAS Worksafe
• CHAS Elite
• Gas Safe Register
• Watersafe Register
• WIAPS
• EUSR
• CSCS
  
  Our Specialisms

We provide expert services across a wide range of plumbing, heating and gas disciplines.

🔧 Heating & Gas Services

• Boiler installation and servicing
• Boiler breakdown & repair
• Full central heating systems
• Water heaters
• Radiator replacement
• Gas fires fitted and serviced
• Gas cookers fitted
• Landlord gas safety checks
• Gas escape detection
• Cold main lead replacement
• Power flushing
• General plumbing

🚰 Plumbing & Water Infrastructure

• New water mains and pipelaying
• Lead pipe replacement under United Utilities’ scheme
• Leak detection including track and trace
• Moling and underground drilling
• Drainage issue resolution

Why Choose Us?

Our team combines technical expertise with a strong commitment to safety, compliance and customer care.
We deliver work that is Friendly – Prompt – Professional, and completed to the highest industry standards.

Visit our Gallery and Reviews pages to see examples of our work and feedback from our customers.

Get in Touch

For quotations or full details of our services, please visit our Contact page.
We’ll respond promptly and professionally.