As the temperature rises and summer approaches, many Gloucester homeowners wonder whether they should turn off their boilers during the summer months. With energy prices still a concern in 2025, it’s a valid question that deserves careful consideration. This guide explores the advantages and disadvantages of switching off your boiler completely during the warmer seasons.
The Benefits of Turning Your Boiler Off in Summer
Energy and Cost Savings
The most obvious benefit of turning off your boiler in summer is the potential for energy savings. Even when not actively heating your home, a boiler in standby mode consumes energy. Our heating engineers in Gloucester estimate that keeping your boiler on standby throughout summer could add £30-£50 to your annual energy bills.
Reduced Wear and Tear
Like any mechanical system, boilers experience wear and tear with use. Giving your boiler a summer break can extend its overall lifespan. This respite allows components to rest, particularly beneficial for older models that have worked hard through Gloucester’s chilly winters.
Environmental Benefits
Another advantage is reducing your household’s carbon footprint. Every kilowatt-hour of energy saved means fewer carbon emissions. If you’re environmentally conscious, turning off your boiler during warmer months aligns with sustainable living practices.
The Drawbacks of Switching Off Completely
Hot Water Considerations
The primary drawback affects homes where the boiler provides both heating and hot water. If you turn off your boiler completely, you’ll lose access to hot water for showers, baths, and washing up. This is particularly relevant for combi boiler systems common in Gloucester homes.
Potential System Issues
Ironically, keeping a boiler inactive for extended periods can sometimes lead to problems. Components may seize, and pumps might become stuck when not regularly operated. Our Worcester-accredited engineers often find that boilers left unused for months can develop issues that require professional attention before winter.
Risk of Damp and Mould
In some Gloucester properties, particularly older buildings, the complete absence of periodic heating can contribute to dampness, especially during wet summer days. Occasional heating helps maintain optimal humidity levels in your home.
The Middle Ground: Summer Boiler Settings
Rather than completely switching off your boiler, our boiler service experts recommend these optimal summer settings for Gloucester homeowners:
- For Combi Boilers: Turn off the central heating function but keep the hot water active. This ensures you have hot water on demand without unnecessarily heating your home.
- For System Boilers: Reduce the temperature settings and frequency of heating cycles. Most modern thermostats allow you to set significantly lower temperatures for summer months.
- For Conventional Boilers: Consider running your heating for 15-30 minutes once a week to keep components active and prevent seizing.
Essential Summer Boiler Maintenance
If you do decide to reduce your boiler usage during summer, these maintenance steps are crucial:
- Check boiler pressure regularly – The optimal range is typically 1-1.5 bar
- Run your heating briefly once a month to prevent pump seizure
- Schedule your annual boiler service during summer – This is the perfect time as engineers are less busy and can thoroughly prepare your system for winter
Pre-Winter Boiler Checks
Before autumn arrives, ensure your system is ready for the increased demand with these checks:
- Bleed radiators to remove trapped air
- Check for any unusual noises when restarting your system
- Inspect for leaks or drips around pipes and valves
- Consider a power flush if your system is older or showing signs of sludge build-up
Professional Advice for Gloucester Homeowners
The decision to turn off your boiler in summer depends on your specific circumstances, including your boiler type, hot water needs, and property characteristics. If you’re unsure about the best approach for your home, our Gloucester heating engineers can provide personalised advice.
Contact Cotswold Plumbers today for expert guidance on optimal summer boiler settings or to schedule a pre-winter boiler service.
Summer is also the ideal time to consider a new boiler installation if your current system is ageing or inefficient, ensuring you’re fully prepared before the next heating season arrives.
Call Cotswold Plumbers on 01242 234 576 to book your summer boiler service in Gloucester and ensure your heating system is properly maintained year-round.