
Machinery Inherent Defects Insurance
Equipment breakdown insurance for mechanical and electrical services installed in newly-constructed and refurbished buildings
Our comprehensive product provides cover for:
Modern buildings are becoming increasingly complex, with up to 40% of construction costs relating to the mechanical and electrical services that support them.
These mechanical and electrical services (often referred to as 'M&E') can be plagued by defects caused by poor design, materials or workmanship, and this can be highly problematic for the owners and occupiers of affected buildings.
A traditional remedy has been the provision of collateral warranties by contractors. But with insolvencies in the construction and real estate sectors running at over 2,600 a year(1) in England and Wales alone, these cannot always be relied upon and can be very difficult and costly to enforce.
Increasingly, developers, owners, funders and occupiers are turning to the security and reliability of inherent defects insurances.
Our response
HSB Machinery Inherent Defects Insurance has been developed to meet these risks, providing cover for the mechanical and electrical services (M&E) installed in:
- New buildings undergoing construction
- 'Shell and core' building refurbishments
- Completed buildings less than two years old
Available for periods of up to 12 years(2), our policy covers actual or impending damage caused by an inherent defect in insured property that existed prior to practical completion of the building.
Installed services covered by our product include:
- Boilers, space heating, ventilation and air conditioning systems
- Lifts and escalators
- Building maintenance units
- Electrical distribution systems
- Equipment used for building security and environmental control
- Electrical and mechanical parts of water pumping, pressurisation and distribution systems
Additional cover is also available for the loss of rental income suffered as a result of a defect.

Delegated Authority/Reinsurance Solutions
Why buy HSB Machinery Inherent Defects Insurance?
- Policy wordings specifically designed for mechanical and electrical services in new buildings
- Wordings designed with all interested parties in mind
- Loss of rent cover available on all policies
- Extensive expertise in building services technology
- Access to experienced mechanical and electrical engineers
- Access to specialist claims handlers and loss adjusters
Claims Examples
Example Losses:
HSB Machinery Inherent Defects Insurance in action
Lift breakdown
Replacement of defective drive motors
Transformer failure
Replacement of both transformers
Loss of rental income
Product Documentation
Why choose HSB?
- Leading specialist provider of engineering and technology insurance and inspection services in the UK and Ireland
- UK-based arm of HSB Group, the equipment breakdown insurance and inspection market leader since 1866
- Part of Munich Re, a world leader in risk solutions, consistent risk management and financial stability
- Financially strong and stable – rated A++ (Superior) by A.M. Best Company
- A member of the Institute of Customer Service, demonstrating our commitment to continually improving customer service performance and professionalism
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