Grade A LD2 Fire Alarm System — What It Is and When You Need One
HMO landlord? A Grade A LD2 fire alarm system is likely required for your property. We explain exactly what's needed, what it costs, and how to stay compliant with BS 5839-6.
What Is a Grade A Fire Alarm System?
Under BS 5839-6, fire alarm systems in domestic premises are categorised by Grade (A to F) and Category (LD1, LD2, LD3). Grade A is the highest grade and refers to a system comprising fire detectors, manual call points, sounders, a control panel, and a dedicated power supply — equivalent to a commercial-grade system installed in a domestic building.
What Does LD2 Mean?
LD2 (Life protection, Category 2) means the system provides automatic fire detection in all rooms or areas that form part of the escape routes, plus any rooms presenting a high fire risk. This typically means detectors in hallways, landings, living rooms, and kitchens — but not necessarily every room.
When Is a Grade A LD2 System Required?
A Grade A LD2 system is commonly required in Houses in Multiple Occupation (HMOs) — particularly larger HMOs of three or more storeys, or those with five or more occupants. Landlords are required to comply with the Licensing of Houses in Multiple Occupation (Mandatory Conditions of Licences) Regulations 2018, which reference BS 5839-6.
Grade A LD2 vs Grade D LD2
A Grade D system uses mains-powered interlinked smoke and heat alarms (with battery backup) and is suitable for smaller domestic properties and lower-risk HMOs. A Grade A system has a central control panel and is more robust, easier to maintain, and is usually required for larger or higher-risk HMOs. Your fire risk assessment will determine which grade is appropriate.
Installation and Maintenance
Grade A systems must be installed and commissioned by a competent engineer and serviced at least twice yearly in line with BS 5839-6. FireJet installs and services Grade A LD2 fire alarm systems for HMOs and residential premises across Lancashire, Greater Manchester, Merseyside and Cheshire.
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