020 8621 6000 Log a call Email home who we are what we do product areas news events get in touch Home > what we do > retro fit > installation and upgrades installation and upgrades At Interphone, we enjoy longstanding business relationships with all the major security and building equipment manufacturers without being tied to anyone. We can therefore recommend the most appropriate products to meet our customers precise needs and budget for all installation and upgrade requirements. We have access to all the latest hardware and software from standard analogue systems to digital and IP based multiple site systems. Using our extensive experience, we bring real expertise to the residential sector, particularly when it comes to the complexities of retrofit projects in older buildings and more complex integration projects in ‘new build’. • Design expertise using our in-house team and proven techniques • End-to-end project management to ensure your needs our met • Tailored support and finance packages design expertise Using a consultative approach, our in-house team will provide a detailed design solution, based on a thorough survey of the site to make sure we fully understand your needs. This means projects are accurately costed in line with your budget and you have the opportunity to sign off on all plans and drawings, ensuring that we install what you want, where you want. Our proposal documentation includes a detailed quotation with explanations and technical data appropriate to the systems proposed, along with images of the key equipment components for your reference. project management We deliver end-to-end project management, so we are best-placed and on hand to support our customers during every phase of the work. Furthermore, we understand that many proposals are subject to consultation with residents, so we are happy to attend meetings with managing agents and residents to communicate details of our proposals, demonstrate equipment, and make sure any queries are answered. Once all parties are in agreement we require a signed order and from this point onwards works are controlled by our skilled engineering teams based on size, complexity and value. Once finished, your project manager will meet with you to ensure everything is signed off, that you are satisfied with the work, and where appropriate handover any OEM service manuals. ongoing support Of course our service does not stop there. Every installation we carry out is covered by a twelve month warranty and after this period we are happy to provide customers with bespoke maintenance arrangements. Although much of our business is now done on an outright sale basis we are happy to provide rental contracts for terms between five and ten years. quality accreditations Interphone is accredited by NSiGold, CEDIA, CAI, GateSafe, SafeContractor and to support its commitment to quality service delivery and exceeding customer expectations. In addition, the company is one of the few integrators within the security systems and building automation marketplace to have achieved ISO 9001. This globally-recognised certification, confirms that quality systems are in place to ensure the company’s procedures and processes meet the highest possible standards. Latest News and Events Interphone teams up with amazon key for business Interphone teams up with amazon key for business to streamline amazon deliveries to commercial residential properties Read More Interphone celebrates 60th anniversary Interphone, the security systems and building technology integrator for multi-unit residential estates and commercial property, is celebrating its... Read More CPD Health & Safety and Fire Safety Awareness Training Seminar Supported by specialist consultants Safety Delivery Limited, join us at our practical learning session to help understand the legal aspects involved heath and fire safety. Read More building security systems tv and media maintenance services Copyright © 2021 All Rights Reserved Interphone Limited. Site by Digital Island Interphone Limited 12 – 22 Herga Road, Harrow, Middlesex, HA3 5AS | T: 020 8621 6000 | F: 020 8621 6100 Registered in England No. 00692333 Registered Office: 5th Floor, Leconfield House, Curzon Street, London, W1J 5JA privacy statement cookie statement sales@interphone.co.uk