R&B London HIU Engineers Limited specialises in the repair, servicing, and installation of Heat Interface Units (HIUs), hot water cylinders, thermal stores, and MVHR systems. With over 18 years of experience, we offer same-day appointments and fixed repair costs, ensuring no hidden fees. We serve London and surrounding areas, providing reliable expertise and exceptional customer service. Our services include HIU diagnostics, repairs, and replacements, with a focus on first-time resolution and customer satisfaction. Contact us for transparent pricing and professional service to keep your heating systems running smoothly.