Experts have worked out how much household appliances cost to run room by room - and found some surprising results.
Households could soon be paying £3,500 a year in energy bills, as these costs are due to rise from October.
More than 80% of UK homes are now on variable-rate energy deals - meaning the more energy you use, the more you pay.
Price comparison firm Uswitch has looked at common household appliances room by room to work out which ones rack up your energy bills the most.
To do this, Uswitch worked out how much it would cost to run typical appliances for one hour, at average energy bill rates.
Uswitch only looked at appliances - meaning things like central heating and lights are not included.
The firm found that the kitchen costs the most, at £2.45 if you ran all appliances - perhaps unsurprisingly.
This is followed by the bathroom, at £2.16.
But then there is a steep drop when it comes to the living room, which costs just 5.9p, and the bedroom at 2p.
This is how your costs break down per room.
Kitchen - £2.45 per hour
Uswitch found that an electric or fan oven has an average power rating of 0.63 kilowatts per hour (Kwh) and so costs 17.9p if run for one hour.
A microwave has a rating of 1Kwh, and costs 28.3p if used for 60 minutes - though it will more likely used for shorter bursts.
A fridge costs 0.5p if run for an hour.
A washing machine costs 20.2p an hour in energy bills, and a dishwasher 22.4p.
But the most expensive appliance is the tumble dryer, which costs a whopping 70.9p if run for an hour.
This makes it the most expensive appliance in the average home.
Bathroom £2.16 an hour
Almost all of the cost of running a bathroom is a power shower - if you exclude boiler costs.
These devices cost around £2.16 if run for 60 minutes, which is very possible in a large household.
An extractor fan uses so little energy (1.5 watts an hour) that it effectively costs nothing if run for one hour.
Living room - 5 .9p an hour
Uswitch said running the average television costs 2.7p an hour in energy bills.
A laptop would cost slightly more - 2.8p.
If you have a lamp on, that adds 0.4p.
Bedroom - 2p an hour
The bedroom is the cheapest room of the entire house when it comes to appliances.
The most expensive bedroom device to use are hair straighteners.
But even these cost just 1.5p is used for an entire hour.
A lamp costs 0.4p if used for an hour, while the typical phone charger costs 0.1p.
Last week The Mirror reported that lowering the temperature on your boiler can cut yearly energy bills by £67.20 for every 10C cut - with one homeowner saving £151.20.
