Heat wave in Luxembourg: how to protect your home and belongings?

Summers in Luxembourg are marked by increasingly frequent and intense heat waves. While heat waves are often associated with their effects on health, they also pose a real risk to homes, household appliances, and outdoor structures.

Prolonged exposure to high temperatures can weaken certain materials, cause electrical appliances to malfunction, reduce the efficiency of solar panels, or even lead to indirect damage that can sometimes be costly.

How can you protect your home during a heat wave in Luxembourg? What risks should you anticipate, and how can the right home insurance help? Here are the key points you need to know.

Heat waves in Luxembourg: increasingly frequent occurrences

For several years now, Luxembourg has seen an increase in the number of days when temperatures exceed 30 °C. These heat waves place a heavy strain on both occupants and buildings.

Unlike sudden disasters such as storms or water damage, the effects of heat are often gradual. However, their consequences can be significant if no preventive measures are taken.

Both homeowners and renters would therefore be wise to adjust their habits to protect their homes and belongings.

The main risks to your home during heat waves

Electrical appliances under increased strain

During a heat wave, many appliances run longer than usual: air conditioners, fans, freezers, and refrigerators run almost constantly.

This intensive use can cause:

• the appliances to overheat;

• premature wear and tear on components;

• an increased risk of electrical failure.

Overloaded power strips, poor-quality extension cords, or an aging electrical system also increase these risks.

A few simple steps can help prevent these issues:

• avoid plugging multiple high-power appliances into the same outlet;

• regularly dust off ventilation systems;

• leave enough space around appliances to allow for proper cooling;

• unplug unused equipment during extended absences.

Solar panels are not immune to heat

Contrary to popular belief, solar panels generate electricity from light, not heat.

When temperatures rise significantly, their efficiency gradually decreases. Poor ventilation of the system can exacerbate this issue. Extreme heat can also accelerate the aging of certain electronic components, particularly inverters.

Regular inspections of the system, combined with proper maintenance, help preserve long-term performance.

At Foyer, the “mozaïk” home insurance policy includes coverage specifically for energy-efficient systems. This coverage can include photovoltaic panels as well as other equipment such as heat pumps, and may cover certain indirect losses related to a drop in production, depending on the specific coverage selected.

Indirect damage is often underestimated

A heat wave does not only cause visible damage. Heat can lead to indirect consequences that are sometimes significant:

Deformation of certain materials

High temperatures can cause:

• cracks in certain building facades;

• drying out and shrinkage of wooden components;

• warping of exterior cladding;

• premature deterioration of joints.

These phenomena can then lead to water infiltration during thunderstorms, which often follow a heat wave.

Computer equipment is particularly sensitive

Computers, internet routers, televisions, home servers, and home automation systems can be damaged by excessive heat.

Poor ventilation or direct exposure to sunlight increases the risk of malfunction.

It is recommended to keep this equipment in rooms with moderate temperatures and to use surge protectors, especially during summer thunderstorms.

How can you protect your home during a heat wave?

Adopter quelques bonnes pratiques permet de réduire considérablement les risques.

Following a few best practices can significantly reduce the risks.

• Close shutters and blinds during the hottest hours of the day to limit indoor heating

• Ventilate only early in the morning or late in the evening when temperatures are cooler

• Regularly check the condition of your electrical system, especially if your home is older

• Maintain your solar panels according to the manufacturer’s recommendations to ensure proper ventilation

• Avoid leaving heat-generating electrical appliances running unnecessarily

• Watch for signs of cracks or warping on facades, decks, and wooden elements

• Finally, if you’re going on vacation, remember to unplug non-essential appliances to minimize the risks associated with power surges

Can home insurance cover the consequences of a heat wave?

The answer always depends on the cause of the damage and the coverage provided in your policy.

Generally speaking, home insurance covers the consequences of a covered event more than it covers the heat itself.

For example, if a power surge caused by a thunderstorm damages your electrical appliances, if a fire breaks out as a result of an electrical failure, or if solar panels sustain covered damage, compensation may be available depending on the terms of the policy.

Conversely, normal wear and tear on materials or aging due to prolonged exposure to the sun are generally not considered insurable losses.

This is why it’s important to regularly verify that your policy accurately reflects the current characteristics of your home, especially if you’ve recently installed solar panels, a heat pump, or other high-value equipment.

Foyer’s Mozaïk home insurance offers flexible coverage that protects the building, its contents, technological equipment, and certain eco-friendly installations, depending on the coverage options you select.

Plan ahead today to avoid unpleasant surprises tomorrow

Heat waves in Luxembourg are expected to become more frequent in the coming years. Beyond the comfort of residents, they pose a real challenge to the preservation of homes and household appliances.

By adopting the right habits and regularly checking that your home insurance covers your specific situation, you can significantly reduce the risk of suffering major losses.

If you’re unsure about the coverage best suited to your home or its systems, a Foyer Lux-Assurances advisor can work with you to assess your needs and help you effectively protect your assets against new climate-related challenges.