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Trusted Oil Tank & Boiler Services Sussex Surrey
Established to deliver expert oil tank installations and boiler services, Holly Boilers has built a reputation for reliability and quality across Sussex and Surrey. Our OFTEC-registered technicians specialise in domestic and commercial oil tank solutions, including emergency repairs, maintenance, and relocations. With over 15 years of industry experience, we prioritise customer satisfaction through honest advice, competitive pricing, and compliance with strict safety and environmental standards. Our team provides tailored solutions, from initial surveys to complete installations, ensuring minimal disruption to clients.

As accredited Tankmark installers and Certas Energy partners, we combine technical expertise with a commitment to exceeding client expectations. Available 24/7 for emergencies, we offer free quotations and transparent pricing. Our portfolio showcases successful projects, reflecting our dedication to quality craftsmanship and long-term client relationships. Customer testimonials highlight our punctuality, professionalism, and ability to resolve complex heating system challenges efficiently.
Services
Domestic Oil Tanks Commercial Installations Emergency Pump Out Oil Tank Maintenance Oil Tank Repairs Tank Relocations
Highlights and features
  • We are OFTEC registered installers ensuring compliance with industry standards
  • Our team has over 15 years' experience in oil tank and boiler systems
  • We offer 24/7 emergency response for urgent heating system failures
  • All work includes free site assessments and compliance checks
  • We provide transparent pricing with no hidden fees
Associations and certifications
  • OFTEC
  • Tankmark
What people say
Friendly guys Great job Timely, efficient True gentleman Competitive prices
Services
Domestic Oil Tanks
We supply and install single-skin and bunded domestic oil tanks from leading manufacturers. Our OFTEC-registered technicians ensure full compliance with safety regulations during installation. Regular maintenance prevents contamination from water and microbial growth in residential heating systems.
Commercial Installations
Specialist oil tank solutions for commercial premises including schools, farms, and offices. We install bunded and double-skin steel tanks from Kingspan Titan and other premium brands. Our team follows strict safety protocols in sensitive working environments.
Emergency Pump Out
24/7 service for sudden tank leaks preventing environmental contamination. We safely pump and store heating oil in temporary tanks, with optional temporary fuel lines to maintain heating during repairs.
Oil Tank Maintenance
Annual inspections and cleaning to prevent system failures. Our three-tier service includes water removal, tank cleaning, and fuel polishing using mobile centrifuge technology for critical cases.
Tank Relocations
Full assessment of new tank locations for fire and environmental compliance. We transfer fuel and reinstall tanks with pipework modifications, either as standalone service or complete installation packages.
Questions
What areas do you cover?
We operate throughout Sussex and Surrey, with technicians available for urgent callouts across the South East region.
Are your engineers certified?
All our technicians are OFTEC-registered and certified Tankmark installers for Harlequin tanks.
Do you offer emergency services?
Yes, we provide 24-hour emergency response for oil tank leaks and heating system failures, 365 days a year.
How often should oil tanks be serviced?
We recommend annual inspections, with additional checks after refills and in early autumn for optimal performance.
Can you relocate existing oil tanks?
Yes, we assess new locations for compliance, pump out fuel, and reinstall tanks with necessary pipework modifications.
What payment methods do you accept?
We accept major credit/debit cards and bank transfers for our oil tank installation and maintenance services.
Reviews (1)
Martin Day
Mar 07, 2021 Report
First time i have used Holly Boilers, and in fact, not actually had them look at anything yet, Paul was excellent, asked if I would send a couple of photos of the issue, then suggested a fix which has worked fine so far. The fact is, unlike a number of companies, he was trying not to charge me for an unwanted visit. This was not the case with another issue and company, we had with our cooker, where we were charged an initial call out 200 plus, knowing exactly what the issue was, then a second charge for repair. ! I have no doubt that Paul is top class and professional and certainly doesn't