Machinery Breakdown Insurance – What’s Covered?

Introduction

If your business relies on machinery, a single unexpected failure can stop work instantly. Repairs can be expensive, parts can take time to source, and downtime can quickly become the biggest cost of all. Machinery breakdown insurance (often called engineering insurance or equipment breakdown cover) is designed to help with the financial hit when essential plant and equipment fails due to a sudden and unforeseen event.

This guide explains what machinery breakdown insurance typically covers in the UK, what it usually doesn’t, and how to set up cover that actually matches the way your business operates.

What is machinery breakdown insurance?

Machinery breakdown insurance is a policy (or section within a commercial combined policy) that covers sudden and unforeseen damage to insured machinery caused by mechanical, electrical, or electronic failure.

It’s different from standard property insurance. Buildings and contents policies often cover external events like fire, flood, theft, and storm damage. Machinery breakdown cover focuses on the internal failure of equipment—things like motor burnout, electrical arcing, or a critical component snapping.

What types of businesses need it?

Any business with equipment that is expensive to repair, hard to replace, or essential to daily operations can benefit, including:

• Manufacturers and engineering firms
• Food production and commercial kitchens
• Warehouses and distribution centres
• Garages, MOT stations, and body shops
• Construction and plant-dependent contractors
• Farms and agricultural operations
• Care homes and healthcare facilities (e.g., lifts, boilers, sterilisation equipment)
• Offices with critical IT, comms, or cooling systems

What equipment can be covered?

Cover varies by insurer, but machinery breakdown insurance commonly applies to:

• Production machinery (CNC machines, presses, conveyors)
• Compressors, pumps, and motors
• Boilers and pressure plant (often subject to inspection requirements)
• Refrigeration and cold room equipment
• Air conditioning and ventilation systems
• Lifts, escalators, and automatic doors
• Electrical switchgear, transformers, and control panels
• Generators and uninterruptible power supplies (UPS)
• Commercial kitchen equipment
• IT equipment and server room cooling (depending on wording)

Some policies insure equipment on a specified basis (you list items and values). Others provide cover for all machinery at the premises up to a limit, with certain categories excluded.

What’s typically covered? (Core cover)

While wordings differ, most machinery breakdown policies cover the cost to repair or replace insured equipment following a sudden breakdown. Here are the main areas.

1) Sudden mechanical failure

This is the classic trigger. Examples include:

• A bearing failure that seizes a motor
• A drive belt snapping and damaging internal components
• A shaft or coupling breaking
• Hydraulic system failure causing damage to the machine

The key is that the damage is sudden and unexpected—not gradual deterioration.

2) Electrical failure

Electrical breakdown is a common cause of claims, such as:

• Short circuits and arcing
• Motor burnout
• Power surges causing component failure
• Failure of control panels, PLCs, or drives

Some policies also include cover for damage caused by overheating or electrical disturbance, but it depends on wording and maintenance expectations.

3) Electronic failure (where included)

Modern machinery often relies on electronics. Depending on the policy, cover may extend to:

• Circuit boards
• Sensors and control systems
• Variable speed drives
• Human-machine interfaces (HMIs)

Electronics can be expensive and may have longer lead times, so it’s worth checking whether the policy treats electronic equipment differently (for example, with different excesses or limits).

4) Repair and replacement costs

Most policies cover:

• Labour and parts
• Specialist engineer call-outs
• Reassembly and testing

Some may also cover temporary repairs to get you running again, which can be crucial if you’re trying to keep orders moving.

5) Expediting expenses (optional)

Many insurers offer extensions for the extra costs of speeding up repairs, such as:

• Overtime labour
• Express shipping for parts
• Temporary hire of specialist equipment

This can be a strong add-on if downtime costs you more than the repair itself.

Business interruption: the cover many businesses forget

Repairing the machine is only half the story. If the breakdown stops production, you may lose turnover, miss deadlines, or pay staff while the line is down.

Some insurers offer machinery breakdown business interruption (sometimes called engineering BI). This can cover:

• Loss of gross profit due to interruption
• Increased cost of working (e.g., outsourcing production)
• Additional expenses to reduce downtime

This is especially relevant for manufacturers, food businesses, and any operation with a single point of failure (one key machine that everything depends on).

What’s usually excluded?

Exclusions vary, but these are common areas where claims can be declined if the policy isn’t set up correctly.

1) Wear and tear / gradual deterioration

Machinery breakdown insurance isn’t a maintenance contract. It typically excludes:

• Wear and tear
• Corrosion
• Erosion
• Scaling
• Cavitation
• Gradual cracking or fatigue

If an insurer can show the damage was inevitable due to age or lack of upkeep, cover may not apply.

2) Lack of maintenance or known defects

If equipment has a known fault and you continue to run it, insurers may argue the event wasn’t “sudden and unforeseen”. Keep service records and address issues promptly.

3) Consumables and tools

Items designed to be replaced regularly are often excluded, such as:

• Filters
• Belts (unless they cause insured damage to other parts)
• Cutting tools and blades n- Lubricants

4) Damage covered elsewhere

If the damage is from fire, flood, theft, or impact, it may fall under your property or motor/plant policy rather than machinery breakdown. The right approach is to ensure policies dovetail, so there are no gaps.

5) Consequential losses (unless you buy BI)

Without the business interruption extension, most policies won’t cover:

• Lost contracts
• Late delivery penalties
• Loss of market
• Reputational harm

6) Cyber or software-related issues

If a machine fails due to malware, hacking, or a software update gone wrong, that may not be covered under machinery breakdown. Some insurers will offer limited cover, but many will point to cyber insurance.

How claims are usually settled

Most policies settle claims on either:

• Repair basis (paying the cost to repair), or
• Replacement basis (if repair isn’t economical)

Key points to check:

• Excess: often higher than standard property policies
• Indemnity: is it “new for old” or market value?
• Betterment: insurers may reduce payment if repairs improve the machine beyond its pre-loss condition
• Sum insured: underinsurance can reduce claim payments

Key policy features to review before you buy

Machinery breakdown cover is not one-size-fits-all. These are the areas that most often cause problems.

Sum insured and valuation

Make sure sums insured reflect:

• Replacement cost (including installation)
• Freight and import costs
• Specialist labour
• Commissioning and testing

If you have older machinery, consider whether replacement would require a modern equivalent and whether your policy basis supports that.

Single point of failure analysis

Ask yourself:

• Which machine would stop the business if it failed?
• How long would replacement parts take?
• Can you outsource production quickly?

This helps set realistic BI indemnity periods and limits.

Inspection and statutory requirements

Some equipment (like boilers and pressure systems) may require inspection under UK regulations and insurer conditions. If inspections are missed, claims can become complicated.

Territorial limits and mobile equipment

If equipment moves between sites, or you operate from multiple premises, confirm cover applies wherever the machinery is used.

Practical examples of what may be covered

• A compressor motor burns out due to electrical failure, damaging the windings.
• A refrigeration unit fails suddenly, requiring replacement of key components.
• A CNC machine suffers a control system failure that stops operation.
• A lift motor fails unexpectedly, requiring specialist repair.

Whether each is covered depends on the cause, the policy definition of breakdown, and evidence of maintenance.

FAQs

Is machinery breakdown insurance the same as plant insurance?

Not exactly. Plant insurance often focuses on theft, accidental damage, and hired-in plant, including mobile equipment. Machinery breakdown cover focuses on internal mechanical/electrical failure.

Does it cover boilers?

Often yes, but boilers and pressure plant may have special conditions and inspection requirements.

Will it cover loss of stock if refrigeration fails?

Sometimes, but not always. You may need a deterioration of stock extension or a separate section.

Is breakdown caused by power surge covered?

It can be, but check whether electrical disturbance is included and whether surge protection or maintenance conditions apply.

How can I reduce premiums?

Strong maintenance records, condition monitoring, surge protection, and realistic sums insured can help. Higher excesses may reduce premium, but only if you can absorb the cost.

Next steps: getting the right cover

Machinery breakdown insurance works best when it’s matched to your equipment list, maintenance routine, and the real cost of downtime. If you rely on a small number of critical machines, consider adding business interruption, expediting expenses, and (where relevant) deterioration of stock.

If you’d like, tell me what type of business you’re insuring and the key machinery you rely on, and I’ll suggest a sensible cover structure and the questions to ask insurers.