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Is Summer The Best Time To Replace Your Boiler?

18th April 2024 Print

When it comes to home maintenance, timing is everything. This is particularly true for replacing a central component like a boiler.

Summer might seem an unusual choice, given its association with warm weather, but it could be the ideal time for this essential home update. Here's why.

Off-Peak Advantages

The most compelling argument for replacing a boiler during the summer is the off-peak advantage. Boiler usage is significantly lower in the warmer months, meaning any disruption caused by installation is less inconvenient. Additionally, engineers are likely to be more available due to reduced emergency call-outs for heating issues. This can lead to quicker service and potentially lower rates.

According to industry reports, like those from the Energy Saving Trust, demand for boiler installations drops by about 20% during the summer months. This decrease in demand not only makes scheduling easier but can also translate into cost savings. Suppliers and installers often offer discounts during summer to boost sales during these slower periods.

Preparing for Winter

Replacing a boiler in summer means you are preparing in advance for the colder months. This proactive approach ensures that your heating system is ready to perform efficiently when you need it most. 

Statistics show that the majority of boiler breakdowns occur during the first cold snap of the year, largely due to systems lying dormant over the summer and then being suddenly thrust into full operation.

An analysis by the Gas Safe Register indicates that nearly one in six homes experience boiler issues as winter begins, with most problems stemming from lack of use during warmer periods. By installing a new boiler in summer, you can avoid the rush and inconvenience of winter breakdowns, ensuring a warm home when autumn and winter roll in.

Increased Efficiency and Reduced Costs

Modern boilers are more energy-efficient than older models. The Energy Saving Trust notes that replacing an old gas boiler without controls, with a new A-rated condensing boiler with a programmer, room thermostat and thermostatic radiator controls (TRVs), can save you around £350 per year on your heating bill. 

Given that these savings begin as soon as the boiler is installed, summer replacement can start saving money ahead of the colder seasons.

Furthermore, operating an inefficient boiler during winter can lead to significantly higher energy bills. Data suggests that boilers contribute to about 55% of what you spend in a year on energy bills, so an upgrade to a more efficient model, or even just upgrading spare boiler parts, can be financially beneficial in the long run.


Opting to replace your boiler during the summer not only prepares your home for the colder months but also offers financial and practical advantages. With potential cost savings from reduced demand for services and the avoidance of winter emergencies, summer emerges as a wise choice for boiler replacement. 

Planning your installation during these warmer months ensures your home is efficient, safe, and warm, right when you need it to be.