Rather than going decaffeinated or swerving the sweet stuff this February, why not say goodbye to some of those little energy habits instead?

Making a few small changes over the next 40 days and 40 nights could make a big difference to your energy bills. Especially if you decide to keep it up all year long.

To help you out, we’ve compiled a list of some of the energy habits you should really think about giving the boot. Number 7 could even save you a whopping £135* a year. Check it out below.

Habit 1: Leaving things on standby

On average, UK households spend £30 a year** powering things left on or on standby. It’s a lot of money for a problem you could sort at the flick of a switch.

How do I kick it?

Switching things off whenever you pop out or head to bed over the next 40 days and 40 nights, could save you around £3.10. Easily enough for a nice coffee and slice of cake as a reward for being so energy savvy.

To see how much you could save if you keep it up for a full year –try our handy SleepSaving calculator.

Habit 2: Fiddling with the thermostat

Whenever it gets cold outside, 51%^ of people in the UK turn their thermostat up – even though every extra degree adds up to a whopping £80** to your annual energy bill.

How do I kick it?

Turning down by just 1oC over the next 40 days and 40 nights is a little change that could pocket you as much as £13.80** in savings. Why not try out our interactive Cosy at 18oC thermostat to see how much you can save by keeping your thermostat at 18oC in the colder months?

Habit 3: Overcharging your phone, tablet or laptop

On average, UK households spend around £9.48 a year charging various phones, tablets and laptops – a figure you can almost double if your devices were made before 2013.

How do I kick it?

Unplugging once the battery bar reaches 100% for the next 40 days and 40 nights could save you upwards of 2.24 watts an hour in wasted energy.

It also means you’ll avoid damaging older device’s usefulness, longevity and re-sale value through what’s known as ‘trickle charging’ – where battery life is permanently shortened by being topped up before it can drain properly.

Habit 4: Using older bulbs

It can be tempting to dig out that old multi-pack of cheap bulbs whenever one blows. But, did you know that good quality LEDs use a fraction of the energy that traditional incandescent and halogen bulbs use?

How do I kick it?

Whether a bulb goes in the next 40 days or not – it’s worth going LED wherever you can. Despite the initial outlay, replacing standard bulbs and halogen spotlights with a set of good quality LED bulbs could save you up to £35 a year**, can last for more than 30 years** and will pay for themselves in no time.

Habit 5: Under-filling the dishwasher

Used wisely, dishwashers can be a great way to save time, effort and water. But remember – the average half-full dishwasher could use the same amount of energy and water as between four and six washing up bowls or leaving the hot tap running for six to nine minutes.

How do I kick it?

Combining less than full loads, washing bulky items by hand and cutting back on dishwasher use by just 1 cycle per week could save a household £10** a year on energy bills, and a further £2** on water bills if your water is metered.

Habit 6: Repeatedly opening the fridge door

On average, you’ll spend a cool £59** a year powering your fridge freezer. And, every time you open the doors over the next 40 days and 40 nights, you’re adding to it.

How do I kick it?

Sometimes going in the fridge or freezer is unavoidable. But, if you’re cooking a meal, try to get out all the ingredients you’ll need in one go. That way your fridge freezer only has to work harder (and use more energy) to get back to the right temperature once – not four or five times.

Habit 7: Wasting water in the shower

On average, UK households use around 360 litres of water every single day. No wonder it accounts for around 21% (£140)** of the typical annual gas heating bill.

How do I kick it?

Fitting a water-efficient showerhead could knock £80** off your annual gas bill and save you £120** on water (based on a family of 4) instantly. Plus, by cutting your showering time down to 4 minutes you could save up to an additional £55** a year off energy bills, and a further £80** a year off water bills if your water is metered.

*Based on a family of four saving £55 a year off their energy bills, and a further £80 a year off their water bills if they pay by meter. Calculated by the Energy Saving Trust.

**Calculated by the Energy Saving Trust, for more information see: http://www.energysavingtrust.org.uk/home-energy-efficiency/

^Based on the Energy Saving Trust’s UK Pulse 2014 survey.