High-capacity electric boiler systems for commercial premises across Flintshire and North Wales. We design and install three-phase boilers for offices, warehouses, care homes, schools and retail units with full compliance.
Commercial heating demands reliable, efficient systems that meet building regulations and health and safety standards. We design and install commercial electric boilers from 12kW to 150kW+ for offices, warehouses, care homes, schools, retail units, and industrial premises. Our service includes heat loss calculations for the building envelope, boiler cascade design for redundancy and load matching, three-phase electrical supply assessment and upgrades, Building Management System (BMS) integration, time-clock and weather-compensation controls, hot water calorifier and buffer tank sizing, and full commissioning with handover documentation. We work around your business hours, coordinate with facilities managers, and provide ongoing maintenance contracts to ensure continuous compliance and performance.
Why Choose RTS for Commercial Electric Boiler Installation?
- Commercial heating design specialists
- Three-phase electrical expertise and supply upgrades
- Out-of-hours and weekend installation available
- Ongoing maintenance contracts with compliance reporting
- Health and safety documentation and risk assessments provided
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NAPIT Certified · Fully Insured · 15+ Years

Commercial Electric Boiler Installation Services We Provide
Commercial heat loss and load calculations
Three-phase boiler systems from 12kW to 150kW+
Cascade boiler design for redundancy
BMS integration and remote monitoring
Time-clock, zoning and weather-compensation controls
Calorifier and buffer tank installation
Out-of-hours installation to minimise business disruption
Benefits of Professional Commercial Electric Boiler Installation
Reliable heating with no gas supply or flue requirements
Redundant cascade design prevents total heating loss
Lower carbon footprint meets ESG and CSR targets
BMS integration for central facilities management
No combustion risk — safer for staff and visitors
Qualifies for commercial energy-efficiency grants
Commercial Electric Boiler Installation in Flintshire — Your Local Expert Near You
When you search for commercial electric boiler installation near me in Flintshire, you want a local contractor who knows the area, not a national call centre. RTS Electrical is based in Flint and serves Mold, Buckley, Connah's Quay, Deeside, Hawarden, Ewloe and all surrounding towns. Our electricians live locally, so we can often respond within the hour for urgent work.
We understand the housing stock across Flintshire — from Victorian terraces in Mold to post-war semis in Buckley and modern estates in Ewloe and Broughton. Every commercial electric boiler installation job we carry out is tailored to your property's age, wiring condition, and your specific needs. Whether you need a quick repair, a full installation, or compliance certification, your nearby electrician in Flintshire is just a phone call away.
Areas We Cover for Commercial Electric Boiler Installation
Not sure if we cover your street? We service every corner of Flintshire and travel into Wrexham, Chester, and the Wirral. Call us on +44 7969 649748 or message us on WhatsApp for an instant response.
Commercial Electric Boiler Installation Near You
We provide commercial electric boiler installation across all these areas in Flintshire and North Wales. Click your area to learn more about our local service near you.
Ready to Get Started?
Contact RTS Electrical today for a free, no-obligation quote on your commercial electric boiler installation in Flintshire. Your local electrician near you, available across Mold, Buckley, Connah's Quay, Deeside and beyond.
Frequently Asked Questions — Commercial Electric Boiler Installation
What size commercial boiler do I need?
Do commercial electric boilers need three-phase power?
Can you install outside business hours?
What compliance documentation do you provide?
Do you offer commercial maintenance contracts?
Can you integrate with our existing BMS?
How long does commercial installation take?
Do you provide temporary heating during installation?
“What Our Customers Say”
Real reviews from real customers across Flintshire
“Rob and Kieron were brilliant - very polite and efficient and also answered all my questions clearly. Will certainly use again. Definitely recommended. Thank you!”
Kathy Jones
Flintshire · 2 years ago
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Get Your Free Commercial Electric Boiler Installation Quote
Tell us about your project and we will get back to you within 1 hour with a no-obligation quote. We cover all of Flintshire and North Wales.