5 Quick Wins to Cut Your Energy Bill This Month

Five practical changes you can make today to lower your gas and electricity bill — no major spending, no smart meter required.

Summary You do not need a heat pump or a full retrofit to cut your energy bill this month. These five changes — turning the boiler flow temperature down, sealing draughts, switching off standby loads, washing at 30°C, and checking your tariff — typically save UK households £150–£400 a year combined. As a senior UK energy journalist, I've seen countless initiatives come and go, but these truly are the low-hanging fruit, requiring minimal investment and offering immediate, tangible returns.

What this means in plain English: Unpacking the "Quick Wins" for UK Households

Most homes leak energy in small, fixable ways. The five biggest "quick wins" are not about sacrificing comfort, but about optimising how you use energy, often correcting inefficiencies that have become standard practice. Let's delve into each, considering the UK context.

1. Optimising Your Boiler Flow Temperature: The Unsung Hero of Gas Savings

Most combi boilers ship at 70-80°C. Turning the flow temperature down to 55-60°C makes the boiler run more efficiently, often saving 6-8% on gas. Your radiators take a little longer to heat up but reach the same room temperature.

This is arguably the most impactful, often overlooked, energy-saving measure for homes with gas combi boilers, which dominate the UK market. The technical reason behind this efficiency gain is that at lower flow temperatures, the boiler's condensing function works more effectively. Condensing boilers recover latent heat from the exhaust gases, significantly boosting efficiency. At higher flow temperatures, the return water temperature is often too high for the boiler to condense optimally.

Practical Step-by-Step Guidance:

1. Locate the flow temperature dial: On most combi boilers (e.g., Worcester Bosch, Vaillant, Baxi), this is a rotary dial or digital control panel, often labelled with a radiator icon or a thermometer. It's distinct from the hot water temperature setting. 2. Adjust the setting: Turn the dial down or set the digital control to between 55°C and 60°C. You might start at 60°C and gradually reduce it to 55°C if you find heating times are acceptable. 3. Monitor comfort: Over the next few days, observe how quickly your home heats up and if your radiators feel adequately warm. It might take slightly longer for rooms to reach your desired temperature, but crucially, they will reach it. Your hot water temperature is usually controlled separately and should remain unaffected. 4. Consider a smart thermostat: While not required, a smart thermostat (like a Hive or Nest) can further optimise heating schedules around this lower flow temperature.

UK-Specific Context: Given the average UK gas price under the Ofgem price cap, 7.97 pence per kWh under the October–December 2026 cap, a 6-8% saving on heating bills can be substantial. For a typical semi-detached home consuming approximately 12,000 kWh of gas annually, this translates to annual savings of £57 to £77. This is based on heating being the primary gas consumer.

2. Battling the UK's Draughty Homes: Cunning Sealing Strategies

A £20-£40 spend on letterbox brushes, door brushes, and silicone strips around windows can save 2-3% on heating.

The UK's housing stock, with its high proportion of older properties, is notoriously prone to draughts. These aren't just uncomfortable; they can account for a significant portion of heat loss, as warm air escapes and cold air infiltrates.