How to work out the running cost of your heating (2024)

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  • How to work out the running cost of your heating
  • Published: 25 Nov 2016
How to work out the running cost of your heating (17)How to work out the running cost of your heating (18)

Last updated: May 2022

Understanding and working out your energy costs can be a complicated endeavour. For a truly accurate cost analysis, a whole slew of variables come into play such as the quality of your insulation, the location of your property, the power usage of your energy system and your supplier’s tariff rate. It’s easy to become lost in this labyrinthine maze of technical jargon while you conduct your research, but in most instances, the average person won’t need to go into this level of depth when making their calculations. If you want to know how to work out the running cost of your heating, we’ve made straightforward instructions that are simple to put into practise and could help you make a more informed purchase for your next appliance.

List of contents

Calculating your running costs: where to start

1. Convert Watts to kW

2. Multiply by hours in use

3. Multiply by pence per kWh

4. Multiply the number of days

5. Create a more realistic figure

What to consider when working out running costs

Calculating your running costs: where to start

The calculation we’re going to use will give you an estimated figure of the running cost for an electrical heating appliance. It won’t take into account any other conditions, such as room size, insulation or draughtiness, but it can still provide you with an average figure that can assist in comparing products.To begin with, you’ll need the wattage of the appliance you want to calculate.For the sake of our example, we’re going to assume that we’re calculating how much it will cost to run a 1000W electric radiator for one day.

Check out our video on how to work out the running costs of your electric heating.

1. Convert Watts to kW

To calculate your running costs, you’ll needto convert the wattage of the appliance to kilowatts; this can be done simply by dividing your wattage by 1000. In our example, we’re dividing our 1000W radiator by 1000 to give us 1kW.

If we were using a 1800W radiator it would be 1800/1000 =1.8kW, or if we were using a 450W radiator it would be 450/1000 =0.45kW.

2. Multiply by hours in use

Next you will need tomultiply the kW figure with how many hours you estimate the heater will be in use each day.This is likely to be very different depending on the season, but let’s say that we’re planning to run our 1kW radiator for 6 hours a day because it’s winter and likely to be quite cold in the mornings and evenings. Multiplying our 1kW radiator by 6 will give us 6kWh (kilowatt hours) which is how much energy it’s expected to use in the day.

If we planned to use a 1.8kW radiator for 4.5 hours, we’d get 1.8 x 4.5 =8.1kWh. Or if we wanted to use a 0.45kW radiator for 7 hours, we’d get 0.45 x 7 =3.15kWh.

3. Multiply by pence per kWh

This is where it can really start to vary as the next step depends on the energy prices set by your provider.As of 1 April 2022, experts estimated the average price of electricity to be 28 pence per kWh.This information is usually displayed on your energy bill so you can easily substitute your own provider’s rates into the equation. By multiplying the expected kWh figure with your supplier’s pence per kWh, you will find out how much it will cost to run your appliance. In our case, it would be 6kWh x 28 = 168p or£1.68.

The cost to run the 1.8kW radiator for 4.5 hours would be 8.1 x 28 = 227p or£2.27and the cost to run the 0.45kW radiator for 7 hours would be 3.15 x 28 = 88p or£0.88.

How to work out the running cost of your heating (19)How to work out the running cost of your heating (20)

4. Multiply the number of days

As this gives you an estimated running cost for one day, you can then multiply this figure by 7 to give you an estimated cost for one week, by 30 for an average month, or by 365 for a yearly total. We’ve established that the 1000W/1kW radiator costs £1.68 to run for 6 hours a day on a 28 pence per kWh tariff. The calculations below give a weekly, monthly and yearly estimated cost for the appliance, assuming that it will be used for 6 hours every day.

168 x 7 ÷ 100 =£11.76 per week

168 x 30 ÷ 100 =£50.40 per month

168 x 365 ÷ 100 =£613.20 per year

5. Create a more realistic figure

The predicted costs above might look higher than you would think but they reflect an unrealistic, worst-case scenario that assumes the appliance is operating at maximum output for the entire hour it’s in operation, which is absolutely not the case. Other electric devices such as TVs and computers will be using electricity continuously until they are turned off, but appliances like fridges or heaters have highly accurate thermostats which will switch them on and off depending on the ambient temperature of the room.In reality, the electric radiator we used in our example might only beusing around a third of the energy estimatedto occasionally maintain and boost its temperature levels.

Let’s say our radiator will only be drawing power for a third of the time, so we can divide these figures by 3.

(168 x 7 ÷ 100) ÷ 3 =£3.92 per week

(168 x 30 ÷ 100) ÷ 3 =£16.80 per month

(168 x 365 ÷ 100) ÷ 3 =£204.40 per year

How to work out the running cost of your heating (21)How to work out the running cost of your heating (22)

These figures are a lot more representative for calculating the cost of a radiator, but keep in mind that your radiator may be drawing power more frequently if it’s trying to maintain the heat levels of open-plan or poorly insulated rooms.

What to consider when working out running costs

Once you’ve sussed how to work out the running cost of your heating, you can use these figures as a basis of comparison between other electric heating appliances in your home to get a rough idea of potential expenditure. However, it’s advisable to take these calculations with a pinch of salt for various reasons – namely that you have to make so many assumptions in the process.

Energy providers

If you’re looking at potential running costs of appliances and finding that they’re quite high, your first port of call should be tolook for an energy provider that’s offering a lower rate. It can make a huge difference: comparing against the figures from Step 4, if you were running the same 1kW radiator for 6 hours on a 20 pence per kWh tariff, it would cost £1.23 to run for one day or £448.95 for the year.

Seasonal changes

In our example, we’ve assumed that we’re going to be running our heater for 6 hours a day for every day of the year. Such a regimented lifestyle is extremely uncommon! How long we run our heating largely depends on weather conditions and the changing of the seasons so you may want to make separate calculations for warmer monthsto get a costing figure that’s a little truer to life. It can be easier sticking to smaller timeframes such as days or weeks which are much simpler to compare side-by-side rather than generalising in months and years.

How to work out the running cost of your heating (23)How to work out the running cost of your heating (24)

Energy-saving features

All of our electric heaters have been optimised with efficiency in mind. Whether through aprecise digital thermostatfor pinpoint temperature accuracy, or viaWiFi app controlso you can adjust your heating no matter where you are. Set up schedules to suit your routine and access your radiators’ energy usage statistics to highlight over-consumption. Whatever your electric heating needs, ours have been designed to be cost-effective in their efficiency, giving you peace of mind over your bills.

Wattage calculator

All of the electric heaters we stock at Electric Radiators Direct display their wattage so you can make your own potential cost projections if you so choose. Don’t get too hung up on calculating running costs though – if you choose an underpowered radiator for your home, you can end up spending even more on energy as your heater struggles to warm a room it’s not suited for. Use our handyradiator calculatorto find the right wattage to suit your home.

Check out our video on how to calculate the wattage for your electric radiators.

Cut down costs with Electric Radiators Direct

Compared to traditional central heating, electric radiators are low maintenance and can be fitted DIY-style, eliminating costly callouts and installation expenditures. When you consider how energy-efficientour electric radiatorsare and how little electricity they require to maintain their heat levels, you could be saving more money than you realise.

Key takeaways

  • Our handy calculations consider your heater’s wattage, hours of use per day and average electricity costs to provide you with an estimate on your running costs.
  • We’ve considered worst case scenarios (running your heaters most of the day on full output) as well as more realistic ones.
  • For more accurate results, consider the time of year when making calculations. Warmer months = less need for heating.
  • To reduce your running costs, shop around for energy providers offering lower rates.
  • Take advantage of your electric radiators’ many energy-saving features to cut down your bills. Settings such as 24/7 programming, app control and adaptive start will all contribute to cheaper heating.
How to work out the running cost of your heating (25)How to work out the running cost of your heating (26)

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How to work out the running cost of your heating (27)

How to work out the running cost of your heating (2024)

FAQs

How to work out the running cost of your heating? ›

On average, you can expect to pay about 20 cents per hour to run an average space heater that is 1,500 watts and can heat a standard room. If you run it for eight hours per day, you'll pay about $1.60 per day. That comes out to just under $50 per month.

How do you calculate cost of heating? ›

How to Calculate Heating Efficiency and Fuel Costs
  1. AFUE = Annual Heat Output (BTU) / Annual Energy Input (BTU)
  2. HSPF = Heat Output (BTU) / Electrical Energy Input (Wh)
  3. Cost of Energy = Cost of fuel x Fuel Conversion Factor / Efficiency.
  4. Gas: ($0.62/Therm)(1 Therm/100,000 Btu)(1,000,000 Btu/1 MMBtu)(1/0.73) = $8.49 / MMBtu.

How do you calculate the cost of running a heater? ›

How do you calculate the running costs of an electric radiator?
  1. Convert watts into kW. Begin by converting the wattage of the electric radiator to kilowatts by dividing the wattage by 1000; for example, 1800 watts is 1800/1000 = 1.8kW.
  2. Multiply by hours in use. ...
  3. Multiply by pence per kWh. ...
  4. Multiply by the number of days.
Aug 1, 2021

How much does it cost to run the heat for a day? ›

On average, you can expect to pay about 20 cents per hour to run an average space heater that is 1,500 watts and can heat a standard room. If you run it for eight hours per day, you'll pay about $1.60 per day. That comes out to just under $50 per month.

How do you calculate heating usage? ›

The first and the easiest method to calculate your home's heating capacity is laid down in the 'building code' basics: one kilowatt of heat will be required for heating every 10 square metres of your home. Hence, for heating a 100 square meters home, one will need to look for a 10 kWh boiler type.

How can I keep my heat bill low in winter? ›

11 Ways to Save on Your Heating Bill
  1. Seal up air leaks. Let's do some detective work here. ...
  2. Program the thermostat. ...
  3. Let the light in. ...
  4. Shut doors in unused rooms. ...
  5. Wear warm clothing. ...
  6. Get cooking. ...
  7. Buy curtains and shades. ...
  8. Replace the filters.
Feb 1, 2023

How much does it cost to heat a 1800 sq ft house? ›

EIA data shows the average price to heat a home in the U.S. in September 2022 was $24.60 per thousand cubic feet. November 2021 costs came in at $13.12 - nearly half as much. That means this September, heating a 1,800 square foot home with standard 9-foot ceilings would cost $398.

How much does it cost to run a heater for 24 hours? ›

Electric Space Heater Running Cost Chart:
Heater PowerCost per HourCost for 24 Hours
1000 watt$0.14$3.32
1200 watt$0.17$3.99
1500 watt$0.21$4.99
3000 watt$0.42$10.08
1 more row
Sep 29, 2022

How much does a heater use per hour? ›

How much does it cost to run an electric heater?
Costs and energyFan heaterOil column heater
Cost per hour – peak$0.63$0.51
Cost per hour – off-peak$0.37$0.30
Typical heat output2100kWh2400kWh
Cost for 3 months' use in winter$278$223

What temperature is cost efficient for heater? ›

According to ENERGY STAR, setting your thermostat to 68 degrees Fahrenheit (20 degrees Celsius) when you're home is the ideal balance of comfort and energy efficiency. So why is 68 degrees the magic number?

Is it cheaper to leave heat on all day? ›

According to experts at the Energy Saving Trust, the idea it's cheaper to leave the heating on low all day is a myth. They're clear that having the heating on only when you need it is, in the long run, the best way to save energy, and therefore money.

Is it cheaper to turn off heat during the day? ›

Turning off your heater, even just for a few hours a day, can help you save between 5%-15% on energy costs over the year. If you have a programmable furnace, you can try this yourself. Schedule your thermostat to turn the heat on during the morning and turn it off for about six hours in the afternoon.

How many hours a day should heat run in winter? ›

While there's no set standard, the average can be between 3-8 times an hour. The question might not come with any “hard and fast” answers, as each home and its residents may have different requirements. A bigger home may need to run the furnace longer.

How many hours a day should heating be on? ›

While there is no one-size-fits-all solution for how long your heating should be on, a general guideline for most homes is 8-10 hours per day. However, this guideline can vary based on the factors mentioned above.

How do you calculate heating hours? ›

How to Calculate Heating Degree Day (HDD)
  1. Subtract the average of a day's high and low temperatures from 65. ...
  2. Subtract each half-hourly temperature reading from 65, with the provision that negative values be set to zero, then sum the result and divide by 48 (48 half-hours in a day).

How do you calculate gas heating? ›

If your meter measures in cubic metres (m3), take the amount of gas used, shown with 'm³' on the front of your bill. Multiply the m3 figure by a conversion factor of 1.02264, then by the calorific value. Calorific values vary; you should find this on your bill. Divide this figure by 3.6 to show your usage in kWh.

What is the cheapest temperature to keep your house in winter? ›

You can easily save energy in the winter by setting the thermostat to around 68°F to 70°F while you're awake and setting it lower while you're asleep or away from home.

What number should I keep my heat on in the winter? ›

The ideal thermostat temperature in the winter is 68 degrees Fahrenheit when you're at home. Energy.gov suggests that 68 degrees is a good room temperature while you're awake at home but recommends lowering it while you're asleep or away.

What temperature should I put heat on but not raise my bill? ›

The lower the temperature is inside of the home, the slower the rate of thermal energy loss. To achieve optimal comfort, it is recommended for homeowners to set their thermostats between 68 to 72 degrees while there are people inside of the home.

What is the most expensive way to heat a house? ›

Electric Heating And Oil Heating Are The Most Expensive Ways To Heat A Home In The US. What these heating costs show is that in the US both fuel oil furnaces and electricity furnaces are an expensive way to heat a home. Electric heat is the most expensive type of heating.

What's the cheapest way to heat a house? ›

Natural gas is likely to prove the cheapest way to heat a home if you have this heating option available to you where you live. Although prices have risen, natural gas is the least costly form of space heating. This is followed by electricity, propane, and heating oil, from the next cheapest to the most expensive.

Which utilities are most expensive? ›

The Bankrate promise
  • The average American family spends $5,640.72 on utilities (including electricity, gas, water, waterwaste, broadband internet, and phone service)
  • Electricity is the most expensive utility in a typical household.
  • Utility costs should not exceed 10 percent of your gross income.
Jan 24, 2023

Is it expensive to keep heater on all night? ›

Not only is it okay to leave the heater on all night, it can save you money. Here's the secret: Set the temperature of your home at least eight degrees lower for the eight hours or so that you sleep at night. Every degree you lower the thermostat can net you an estimated 1% off your heating bill.

What uses the most electricity in a home? ›

Top five energy consuming home appliances
  • Wet appliances. Washing machines, dishwashers and tumble dryers account for 14% of a typical energy bill, taking the top spot in our list. ...
  • Cold appliances. ...
  • Consumer electronics. ...
  • Lighting. ...
  • Cooking.
Jan 14, 2022

How many times a day should your heater run? ›

Your furnace may need to run two to three times an hour to maintain your desired temperature if your home has average insulation. If your furnace runs longer or shorter than average, it doesn't necessarily mean your furnace has a problem.

What type of heater is cheapest to run? ›

Conclusion. So, after looking at the different types of electric heaters available, due to its lower power-output, halogen heaters are the cheapest electric heaters to run.

Do house heaters use a lot of electricity? ›

Does an electric heater use a lot of electricity? Despite their small size, electric heaters use a significant amount of electricity. Most space heaters use approximately 1,500 Watts of electricity per hour making them one of the most inefficient heating options for your home.

What is the cheapest heater to run per hour? ›

What is the cheapest electric heater to run?
  • Oil-filled heater. Oil-filled heaters have been proven to be very energy efficient, quiet, and safe for households with children and pets. ...
  • Fan heater. Fan heaters are typically a lot lighter and easily portable. ...
  • Convector heater. ...
  • Halogen heater. ...
  • Radiator bar-style heater.
Dec 16, 2022

Does turning the heat on and off raise the bill? ›

A viewer asked us to verify whether turning your heat on and off is more cost effective than leaving it running steady. Our researchers asked AC and Heating experts. They agree you should not turn your system off completely—then it'll have to work extra hard to reheat the house and it'll end up costing you.

What should I turn my thermostat down to at night? ›

Turn Down the Thermostat at Night...

Sleep scientists suggest that for optimal sleeping conditions, room temperature should be between 60 and 67°F. That figure is considerably lower than the daytime recommendation, furthering your heating bill savings while also reaping improved sleep.

Is it cheaper to leave your thermostat at one temperature? ›

The startup process for a furnace consumes more energy than simply running the entire time at one set temperature, costing you additional money. To maximize efficiency, it's best to keep your furnace (or AC) at the same consistent temperature for long periods of time.

Does turning off heat at night save money? ›

The average savings for homeowners who do this is 1% to 3% per degree that they lower the thermostat. For a homeowner who lowers the temperature 8 degrees for 8 hours per day, that savings translates to at least $180 per year.

What temperature should house be at night? ›

The best room temperature for sleep is approximately 65 degrees Fahrenheit (18.3 degrees Celsius). This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 60 to 68 degrees Fahrenheit (15.6 to 20 degrees Celsius) for the most comfortable sleep. Sleep Guidebook.

Does lowering heat at night save money? ›

Yes, homeowners can save money on their energy and heating bills by turning the thermostat down. You can save almost 15 percent of your total heating bill by lowering your heat by seven degrees overnight (or for any other eight hour period).

What temperature is too cold for a house? ›

The World Health Organization (WHO) recommends setting your thermostat no lower than 64 degrees (F) in the Winter months while people are in the home. If there are infants or elderly individuals, they recommend keeping the temperature at 70 degrees at a minimum.

What temperature should I leave my heating on overnight? ›

The Energy Saving Trust recommends heating your home to between 18 to 21 degrees celsius during winter. And The World Health Organisation (WHO) suggests 18 degrees is the ideal temperature for healthy and well-dressed people. Both agree this is also the ideal temperature for sleeping.

What temperature should I leave the heat on when away in winter? ›

'I would recommend adjusting your thermostat to between 15 to 18 degrees as this should keep enough warmth in your home and won't be as expensive.

How often should my heat turn on in the winter? ›

When your furnace is trying to regulate the temperature in your home it will have to turn on and off regularly. On average this cycling should occur anywhere from three to eight times an hour. There are many factors at play that determine how often your furnace will cycle in the winter.

Is it OK for my furnace to run constantly? ›

Your furnace should not be constantly running. It's a definite sign of a system malfunction and there are few common causes for this. If it seems like your furnace never turns off, you should definitely call a reliable HVAC (heating, ventilation, and air conditioning) service for furnace repair in Burlington, NC.

Is it OK for my furnace to run constantly in cold weather? ›

"Your system's [furnaces] aren't designed to run in temperatures that are below-zero for long periods of times," Marchand said. To help alleviate some of the stress off of systems during these cold temperatures, set your thermostat a few degrees lower than what you're used to.

What is a good heating schedule? ›

You should set the central heating programme to come on around half an hour before you get up, and go off around half an hour before you go to bed. And if the house is empty during the day, or you can manage without heating during the day, make sure you've set the programmer to go off for this period too.

Is it worth putting heating on for half hour? ›

Unless your house is very well insulated, keeping your heating on low all day is usually unnecessary and will cause your heating bills to soar. Instead, set your heating to come on in the morning before you get up and turn it off half an hour before you leave for work.

What temperature should I set my heating? ›

Between 70 and 78 degrees Fahrenheit should be the perfect temperature range for a home. While you're gone from home, adjust the thermostat by 8 degrees to enhance energy efficiency and cut your heating and cooling expenses.

How many times should heat run per hour? ›

On average, furnaces should kick on and off anywhere from 3-8 times per hour. However, if your furnace does so more frequently, don't assume it's short cycling just yet.

How do you calculate heating costs using degree days? ›

The simplest way to normalize energy-consumption figures is to calculate the kWh per degree day for each kWh energy-consumption figure in question. Simply divide each kWh figure by the number of degree days in the period over which that energy was used.

What are heating load hours? ›

heating load (per hour) = total heat loss (per hour) * heating degree hour. For the sake of simplicity let's say that our single room is made of bricks (both four walls, ceiling and floor), that it has no windows, nor doors. The room is a brick of dimensions 3x3x3 meters.

How do you calculate natural gas heating cost? ›

Let's say you have a furnace with a BTU rating of 100,000 and your gas bill is measured in MCFs. If one MCF costs $9.00: Divide the price per MCF by 1,028,000 to get the price per BTU: $0.00000875486.

How do I calculate my gas cost? ›

Calculate the overall gas cost of your trip

First, divide the distance of the route by your miles per gallon figure to discover how many gallons of gas you will need, then multiply the number of gallons by the price of gas.

What is the formula for gas rates? ›

Gas rate = (3600 x number of ft³ per revolution)/the time taken for the test dial to complete one revolution. Unit of gas rate for this formula is ft³/hr.

How do you calculate square footage for heating? ›

For example, a 300 square foot room typically requires 7,000 BTUs to maintain a comfortable temperature, while a 1,000 square foot room requires 18,000 BTUs. A simple formula to determine your heating needs is: (desired temperature change) x (cubic feet of space) x . 133 = BTUs needed per hour.

What is the average heating bill in Massachusetts? ›

Highest heating bills this winter: Massachusetts in Top 20
RankStateMonthly gas bill (2022-23)
13Michigan$184
14Massachusetts$171
15Wyoming$167
16Utah$161
16 more rows
Jan 10, 2023

How many heat runs per square foot? ›

One cfm is needed per square foot (1 cfm/sq ft) of floor area. This is the average air quantity required for a room or an entire building. This number is based upon an averaged heat load calculation for comfort cooling.

How much does it cost to heat a square foot? ›

A good BTU per square foot heating rule of thumb is to look up which climate zone your property is in and then use the following table as a starting point for your recommended BTU per square foot heating value: Zone 1: 30-35 BTU per square foot. Zone 2: 35-40 BTU per square foot. Zone 3: 40-45 BTU per square foot.

How many square feet will $20000 heat? ›

How Many Square Feet Will 4,000 – 80,000 BTU Heat?
Heating CapacitySquare Footage (Hot Climate)Square Footage (Cold Climate)
20,000 BTU600 sq ft360 sq ft
30,000 BTU1,000 sq ft500 sq ft
40,000 BTU1,320 sq ft700 sq ft
60,000 BTU2,000 sq ft1,100 sq ft
11 more rows
Jul 13, 2022

What is the formula for gas prices? ›

To calculate the fuel cost, we use one of the following formulas: Fuel cost = (Distance / Consumption) × Cost per gallon Fuel cost = (Distance / 100 × Consumption) × Cost per gallon We use the first formula if the consumption is miles per gallon or liters per kilometer.

What is the cheapest way to heat a house in Massachusetts? ›

Air-source heat pumps are a more efficient and cost-effective way to heat your home using electricity at a fraction of the cost of oil or propane.

How long does 275 gallons of oil last in winter? ›

A 275-gallon supply of heating oil will last for approximately 56 days at the rate of 4.9 gallons per day.

Which is cheaper to heat your house gas or electric? ›

Natural Gas On Average Is Cheaper In The US

In our analysis below, we find that on average natural gas heat costs $37 per million BTU (MMBTU) compared to electric heat at $49 per MMBTU. That means natural gas heat costs about 75% of the price of electric heat over a year for a home.

How much natural gas does the average household use per month? ›

According to the US Energy Information Administration, the average monthly residential natural gas usage in the US is between 70 and 90 therms per month.

How much gas does a furnace use per hour? ›

The average 100,000 BTU propane gas furnace uses approximately 1-gallon-per-hour or 500-1,200 gallons per year.

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