Blog7 November 2023

When should I turn my boiler on?- Advice for winter 2023-2024

With summer now a distant memory, it’s fair to say we have already experienced temperatures dropping across the UK.

Many experts believe that on average, people in the UK are more likely to turn the heating on when the temperature drops below 15 degrees outside. Of course, there is no specific day when this will happen, but it’s thought to typically occur around late September or October – although it was even later this year!

However, this can vary greatly depending on the individual and their home. In fact, it’s believed that most people habitually wait until the clocks go back, which on Sunday 29 October in 2023.

So, if you’re wondering when to put the heating on, the most logical and popular choice appears to be mid to late October. And here we are…


Should I turn my boiler off during the summer?

Yes, it is recommended to turn your boiler off during the summer months when heating is not required. This will save energy and money.


Is your boiler ready to be turned on?

Before turning your boiler back on, it’s important to have it serviced and checked by a qualified engineer. They will ensure it is safe, efficient and ready for the colder months ahead.


What are the signs of boiler failure?

Boiler breakdowns can be caused by age and wear. Common signs of boiler failure include:

  • Thermostat issues like failure to turn on/off or maintain temperature can affect boiler performance.
  • Leaks signify potential serious problems like cracks or faulty valves.
  • Odd noises from rattling or whistling could mean loose valves or limescale buildup.
  • Kettling is caused by limescale creating steam bubbles that pop loudly.
  • Frozen condensate pipes in winter cause blockages and breakdowns.
  • Low pressure below 1 bar impairs boiler capacity and should be checked.


How do I know if my boiler has low pressure?

There are two main causes of low boiler pressure:

  • Leaks in the system
  • If you’ve recently bled your radiators


When you have a leak, even if it’s a slow leak, the amount of water in the heating system is being reduced, and therefore causes the pressure to drop. It’s important to find the source of the leak so you can get it under control, and then you can use the filling loop to add more water to the system. Start by checking the pipes around your boiler and radiators for signs of moisture. You should also check your ceilings and floors for damp patches.


Bleeding radiators, which release trapped air, also cause water to be lost from the system and the pressure to decrease. After bleeding radiators, check the pressure gauge on the boiler – it should read between 1-2 bar when cold. If it’s below 1 bar, the system needs topping up with water.

When should I replace my boiler?

Typically, boilers should last 10-15 years. It’s best to replace boilers over this age even if still functioning, as they become unsafe and inefficient.


Boiler hire with Andrews Sykes

Determining the right moment to fire up your boilers on site requires balancing multiple factors. As discussed, while early autumn may seem prudent to pre-empt winter, holding off until the first cold snaps can help maximise efficiency.

If your commercial or industrial boiler falters or no longer meets demand, it’s worth remembering that Andrews Boilers offer reliable solutions to keep your facilities or workplace running through the season. With the right preparation and support, your operation can run smoothly all winter long.

Looking for a temporary boiler hire to get you through a compromising situation? Contact one of our experts today on 0800 211 611.