Expert on whether it is cheaper to leave your heating on all day

The debate about whether it’s more cost-effective to keep your heating on low all day or to turn it on and off as needed is an interesting one. With energy prices soaring, it is a question that is now more pressing than ever.

To help bring the science and economics behind this debate to light, heating expert Matthew Jenkins at MyJobQuote.co.uk has created this guide. So, is it cheaper to keep your heating on low all the time, or is it more cost-effective to turn it on and off as and when you need it? Read on to find out the answer to this age-old question…

Understanding How Heating Systems Work

To understand the best approach, it’s a good idea to get a grasp on how heating systems function. Most homes in the UK rely on central heating systems and these are most commonly powered by gas boilers. These systems work by circulating hot water through radiators or underfloor heating pipes.

When you turn your heating on, the boiler ignites and begins heating the water. This process requires a significant amount of energy, especially when the system is cold. Once the water is hot, the system then maintains a constant temperature, using less energy to keep it there.

The Constant Heat Myth

A common misconception is that keeping your heating on low all day is more energy-efficient. While this may seem logical to avoid that initial energy surge, the reality is actually more complex.

• Energy Loss – Homes are never perfectly insulated. Heat can escape through windows, walls, and roofs – especially in older properties. Keeping your heating on low all day means you’re constantly losing heat to the outside environment.
• Inefficient Heating – When your heating is on low, the boiler may cycle on and off frequently to maintain the set temperature. This constant cycling can be less efficient than running the system for longer periods at a higher temperature.

The On-Off Approach

The on-off approach refers to turning your heating on for specific periods, such as during the mornings and evenings. This method can be much more energy-efficient for several reasons.

• Targeted Heating – You only heat your home when you need it. This helps to reduce energy waste.
• Peak Demand Avoidance – By avoiding using your heating during peak demand periods, you could potentially benefit from lower energy bills.
• Improved Comfort – A well-timed burst of heat can provide a more comfortable than low, constant heat.

Factors to Consider

The best approach for heating your home depends on several factors, including the following:

• Insulation – Well-insulated homes can retain heat more efficiently, making it easier for you to maintain a comfortable temperature.
• Thermostat – A programmable thermostat allows you to schedule your heating to turn on and off automatically.
• Lifestyle – Your daily routine and how much time you spend at home will influence your heating needs.
• Energy Tariffs – Your energy supplier and tariff type can impact the overall cost-effectiveness of different heating strategies.

Tips for Energy-Efficient Heating

Regardless of whether you choose to keep your heating on low or turn it on and off, there are some things you can do to help save energy. Take a look at the tips below:

• Insulate Your Home – Improve your home’s insulation and reduce heat loss.
• Bleed Your Radiators – Regularly bleed your radiators to remove trapped air and improve their efficiency.
• Use a Programmable Thermostat – Schedule your heating to suit your lifestyle.
• Lower the Temperature – Even just lowering your thermostat setting by a couple of degrees can help you save some significant energy.
• Close Your Curtains and Blinds – This will prevent heat loss through the windows.
• Use a Timer on Your Boiler – Set a timer to run your boiler off when you’re out or asleep.

Final Thoughts

The debate over whether to keep your heating on low all day or turn it on and off is complex. While there's no one-size-fits-all answer, understanding how your heating system works and adopting energy-efficient practices can help you save money and reduce your carbon footprint.

By considering factors like insulation, thermostat settings, and lifestyle, you can find the optimal heating strategy for your home. Remember, a well-insulated home with a smart heating system can provide comfort without breaking the bank.