When Is The Best Time To Install A Boiler?

The consensus among industry experts is that the summer months (June to August) are the best times to install a boiler. Planning a replacement during the warmer off-season allows you to avoid the “winter rush,” benefit from lower labour rates, and ensure your home is fully prepared before the temperature drops. 

Whether you are a landlord looking to minimise tenant disruption or a homeowner seeking the best financial deal, timing your installation strategically is the key to a hassle-free upgrade.

When Is The Best Time To Install A Boiler For Maximum Savings?

The best time to install a boiler is undoubtedly during the summer and early autumn for those looking to save money. During this off-peak period, demand for emergency repairs and heating call-outs drops significantly, which often leads to more competitive pricing from local installers. 

Many Gas Safe registered engineers offer “summer discounts” or lower day rates to fill their schedules. Furthermore, manufacturers frequently launch seasonal promotions, such as cashback offers or extended warranties, between May and September to encourage sales. 

By avoiding the peak winter season, you can often save between 10% and 15% on the total cost of your installation, potentially putting hundreds of pounds back into your pocket.

Why Is Summer Installation Better For Property Owners?

The reason summer installation is better for property owners boils down to convenience and system reliability. When you replace a boiler in July, you aren’t under the ticking clock of a freezing house, meaning you have the “breathing space” to research different models, compare energy efficiency ratings (ErP), and choose the perfect smart controls. 

If the installation uncovers unexpected pipework issues or requires a powerflush to remove sludge, the extra day of work won’t leave your family or tenants shivering. 

For landlords, this is also the most sensible time to upgrade, as it ensures the property is “winter-proofed,” significantly reducing the likelihood of urgent, high-cost emergency call-outs during the Christmas period.

How Does Seasonality Affect Boiler Installation Speed?

The way seasonality affects boiler installation speed is directly linked to the availability of qualified heating engineers. In the winter, a typical Gas Safe professional might be juggling five or six emergency breakdown calls a day, meaning they may not have a free multi-day “slot” for a full boiler replacement for several weeks. 

In contrast, during the summer, you can often book an installation for the very next week. Faster availability means you can get the job done at your own pace, ensuring that all aspects of the installation—from the flue terminal positioning to the chemical inhibitor levels—are handled with meticulous care rather than in a rush to get to the next emergency.

Need A New Boiler Quote?

Upgrade your home with confidence by choosing a team that understands the importance of precision and reliability. Our installation experts are ready to help you find the most cost-effective and energy-saving solution for your property.

Request a new boiler quote from Boilers 2 Go to see how much you could save on the latest A-rated models. We provide a comprehensive service for both homeowners and landlords across the UK, offering flexible installation dates that suit your schedule. 

With a new boiler, you’ll benefit from lower energy bills, a reduced carbon footprint, and the security of a long-term manufacturer’s guarantee. Start your journey to a warmer home today with a transparent, no-obligation quote.

FAQs

Can I get a boiler installed on a weekend to avoid time off work?

Yes, many installers offer weekend slots, but be aware that labour rates are typically higher on Saturdays and Sundays. If you book during the summer, you are more likely to find a weekday slot that fits a flexible working schedule, avoiding the “weekend premium” altogether.

Does the age of my boiler dictate when I should replace it?

If your boiler is over 12–15 years old, you should ideally plan a replacement in the summer regardless of whether it’s currently working. Older “G-rated” boilers are significantly less efficient and more prone to catastrophic failure when they are suddenly pushed hard during the first cold week of winter.

Will a summer installation affect my warranty start date?

Your warranty typically begins from the date of installation and commissioning, not the date of purchase. Installing in the summer means your first annual service will also fall in the summer—a permanent benefit that makes it easier to book your maintenance for years to come.

Are there specific months when boiler prices are highest?

While the price of the boiler unit itself is relatively stable, the “total package” price is often highest in November, December, and January. This is due to the high demand for labour and the fact that many people are forced into “distress purchases” where they cannot afford to wait for multiple quotes.

Can I still use my hot water during a summer installation?

During the actual installation process (which usually takes 1–2 days), your water will be turned off for several hours. However, doing this in the summer is far more manageable than in the winter, as you won’t need the heating on and a cold or lukewarm wash is much less of an ordeal.