How Much Electricity Does An Oil Furnace Use? Quick Facts

Oil Furnace

To understand the electricity usage and working of an oil furnace, let me walk you through how it operates. 

In this section, we will explore how an oil furnace works, and the electricity needed to perform its various functions. 

We will analyze the electricity usage of oil furnaces and look closely at their different components, like the blower, motor, and burner.

Working of an Oil Furnace and Electricity Usage.

An oil furnace is a heating system that uses oil for heat. It usually consumes 200-300 watts per hour, which is 1.6-2.4 kWh each day.

Furnace age and condition play a role in energy consumption. Newer furnaces use less than older models, and smaller ones use less fuel than bigger ones.

Oil furnace electricity use may be higher than other systems, like heat pumps or gas heaters. But in places without natural gas or cold winters, an oil furnace can be cost-effective. says you can save 30% on heating costs compared to electric sources if you use an oil-fired boiler or furnace.

Factors Affecting Electricity Use In Oil Furnaces.

How Much Electricity Does An Oil Furnace Use? Vital Guide

To understand the factors affecting electricity use in oil furnaces with the title “How Much Electricity Does an Oil Furnace Use,” let me walk you through three main sub-sections: the size of your furnace and generator, the type of heat pump and fuel oil you are using, and an original message from a group view member email that provides insight on this topic.

 By exploring these factors, you can get a clearer idea of how much power your oil furnace is likely to need and how you can control your energy usage around it.

Size of Furnace and Generator.

When talking about electricity use in oil furnaces, the size of the furnace and generator is key. An improper match could result in inefficient heating and higher bills. 

See the table below for size pairings:

Furnace SizeGenerator Size
Small: 60,000 BTU/h5-6 kW
Medium: 80,000 BTU/h7-8 kW
Large: 100,000 BTU/h or more10-12 kW or more

The insulation of your home also matters when selecting a furnace and generator. A house with bad insulation requires a larger furnace and generator. 

Tip: Consult with an HVAC specialist before buying a furnace or generator to guarantee energy efficiency.

Choosing between a heat pump and fuel oil is comparable to selecting between a hipster coffee shop and a greasy diner; each has its advantages and disadvantages, but just one brings you that inner warmth.

Type of Heat Pump and Fuel Oil.

Electricity use in oil furnaces is affected by two factors: the type of heat pump and the fuel oil type. 

See the table below for details:

Type of Heat PumpFuel Oil Type
Air-Source Heat PumpsNo. 1 Fuel Oil, No. 2 Fuel Oil, Kerosene, Bioheat (blended with petroleum heating oil)
Geothermal Heat PumpsNo. 2 Fuel Oil and Kerosene

Before electric ignition systems were invented in the mid-1900s, oil furnaces were lit using pilots. 

Such a revelation is as thrilling as getting a surprise email from a group view member in my inbox!

Original Message from a Group View Member Email.

Electricity use in oil furnaces depends on various things. Age and efficiency of the furnace, insulation of the house, and external temperature are all factors.

The older the furnace, the more energy it consumes and it works less efficiently than newer ones.

Insulation is important. Poor insulation means more heating is needed. More heat = more electricity use = higher bills. Colder temperatures? Yup, they mean more heating, meaning more energy consumption, and bigger bills in winter.

Maintenance is key to keeping bills down. Cleaning and servicing the furnace will make sure it runs at its best. This will reduce electricity costs.

Take care of your furnace! Has it been inspected annually before winter? Let’s hope electricity bills don’t leave you in shock.

Calculation Of Electricity Use In Oil Furnace. 

To calculate the electricity usage of your oil furnace, you need to understand the concepts of Kilowatt-hour and wattage.

 Let’s discuss these concepts to find out how they will help you calculate your furnace’s electricity usage. Then, we will look at the average electricity consumption of oil furnaces and how they differ from electric furnaces in terms of energy usage, cost, and efficiency.

Understanding Kilowatt Hour and Wattage.

Kilowatt-hours, or kWh, measure energy usage over time. Wattage, on the other hand, measures the power consumed in a single moment. 

So, to work out how much electricity a device uses in an hour, just multiply wattage by hours of use; this gives you the kWh.

It’s important to check the wattage of your appliances and devices. This varies a lot, e.g. a fridge needs 150 watts when cooling, but a light bulb just a few. 

Plus, the longer you use something, the more energy it consumes; so think about how long you’re using each appliance for.

Tip: Upgrade older appliances with Energy Star-certified ones. These consume less energy so you’ll save money and help the environment too. 

And if electricity costs are sky-high, try a space heater and some candles!

The Average Electricity Consumption of Oil Furnaces.

Oil furnaces are a common find in many households. Knowing their electricity consumption is vital. To accurately calculate, create a table with columns for the furnace model, age, and hours of operation. For example, 8 hours a day of oil furnace use equals 3.6 kWh of electricity.

But, other factors come into play too. Insulation, pipe quality, and fuel efficiency affect electricity consumption. So, homeowners should consider regular maintenance and upgrades to use energy optimally.

One homeowner found their oil furnace using more electricity than it should have been. The culprit was a faulty filter. After replacing it and getting professional maintenance services, they saw a big drop in their monthly bills.

Switching from oil to electric furnaces can save money and stress. Just remember that the installation process may drive you to therapy!

Comparison Between Oil Furnaces and Electric Furnaces.

Comparing oil and electric furnaces? Weigh the pros and cons. Let’s look at what they have in common. Plus, one unique consideration with electric furnaces is the solar panel combo. While oil furnaces might work better in areas with power outages.

A friend switched from an oil furnace to an electric furnace. They noticed a decrease in their monthly heating bill. Though installation cost more upfront, over time, they saved money on energy costs.

Oil furnaces may be hot, but you don’t want your electricity bills to be too hot. Try these tips to save money.

Tips To Reduce Electricity Use In Oil Furnaces.

To reduce electricity use in your oil furnace, you need to find alternative ways to use appliances and lights efficiently. One solution is to choose energy-saving space heaters that consume less power. Another option is to incorporate natural gas and a wood stove to reduce reliance on electricity.

 In this section, we will explore these subsections to help you reduce your electricity consumption and save on costly bills.

Using Appliances and Lights Efficiently.

John woke up shivering one winter morning as his furnace had stopped working due to excessive electricity consumption! His electricity bill was too high due to leaving lights on overnight and using the oven for small cooking tasks during the lockdown.

  • He took some advice and made a few changes. 
  • He opted for LED or CFL bulbs instead of incandescent bulbs.
  •  He used power strips to turn off electronics when not in use. 
  • He closed the fridge door quickly after use and avoided keeping it open unnecessarily.
  • He used a toaster oven instead of a full-sized oven
  • He cleaned light fixtures regularly to increase their efficiency and brightness. 

He switched to Energy Star-certified appliances as they are designed to be more energy-efficient. He also repaired any leaking faucets or pipes immediately.

These changes led to significant reductions in his electricity bill while keeping his oil furnace running smoothly throughout winter! Plus, to keep warm and save money, he invested in energy-saving space heaters. 

Now his home is warm and he has extra cash in his pocket!

Choosing Energy-saving Space Heaters.

Searching for a new space heater? Opt for an energy-saving one to save money and the environment.

 Check out these popular options:

Ceramic Space HeatersSpeedy heating.Silent operation.Compact.Reasonable cost.Inadequate for large spaces.Not for long-term use due to safety.
Infrared Space HeatersHeats objects for targeted warmth.Quiet work.Safer.Costlier than ceramic space heaters.May not be as portable.

Dual-heating systems and convection heaters are other alternatives. When selecting, think about the room size, usage length, and safety.

Pro Tip: Turn off your space heater when leaving a place or done with it – for maximum energy savings. 

Who needs a fireplace when you can just cuddle up to your natural gas bill instead?

Incorporating Natural Gas and Wood Stove. 

For those seeking to reduce electricity use, natural gas and wood stoves are a great option

Here are some tips to get you started:

Ensure proper installationHire a licensed professional for safety.
Maintain equipmentKeep units running smoothly by cleaning chimneys.
Use efficient productsChoose modern, high-efficiency models.

Plus, natural gas and wood stoves emit less carbon! Eco-friendly homeowners should take advantage of this. Enjoy energy savings and a reduced carbon footprint with natural gas and wood stoves!

Oil furnaces become a savior when the power’s out.

Electrical Power Outages And Oil Furnaces.

To keep the house warm during unexpected power outages, you need to have a backup plan for your electric heating appliances in the winter. 

In this section, we will discuss the emergency electricity options for oil furnaces with three subsections. First, we will talk about using generators and batteries as a solution, followed by safety measures that you should adhere to during a power outage.

Emergency Electricity Options.

When the power’s out, oil furnaces can be a lifesaver. Let’s explore emergency electricity options for homeowners during blackouts.

Check out this overview:

Generators must be used outdoors to avoid carbon monoxide poisoning. They need professional installation to avoid back feeds.

Battery backups can provide limited power in long outages. Only use turbines for necessary appliances.

For example, a Wyoming family during winter storms had generators & battery backups but limited fuel supplies. They were helpless until the town’s utilities were restored.

Be prepared for power outages with oil furnaces as backup options. 

Knowing options will help homeowners choose the best fit; priceless peace of mind!

Using Generators and Batteries.

When electricity is out, oil furnaces can come in handy. Generators and batteries are also effective alternatives. 

  • Generators provide continuous power but require fuel
  • Batteries are quiet, yet need to be charged.

One homeowner had a prolonged blackout, and his generator ran the furnace, but he had difficulty finding fuel. He decided to invest in a solar-powered battery system for emergencies.

Safety is always key! Don’t want to spend the night cuddled up in blankets, ‘I Spy-ing’ with your family? Get generators and batteries!

Safety Measures to Follow.

Electric power outages can occur, especially in extreme weather conditions. If your home has an oil furnace, it’s important to be prepared.

 To stay safe during these times, here are some steps to take:

  1. Get a backup generator: A backup generator is a smart investment to ensure your furnace works even when there’s no power. Connect it properly.
  2. Have fire extinguishers: Always be prepared for risks like fires. Place multiple extinguishers around your home.
  3. Detect carbon monoxide: Carbon monoxide poisoning is a serious risk. Install detectors throughout the house that will sound an alarm if leaks are detected.
  4. Maintain the oil furnace: Hire professionals yearly to clean, inspect, and repair.
  5. Extra heating supplies: Electricity providers can take time to restore. Keep extra blankets, sleeping bags, or heaters handy.

Also, never use gasoline-powered generators indoors as they emit dangerous fumes. Don’t overload extension cords or outlets.

Personal Experiences With Oil Furnaces And Electricity Use.

To share personal experiences with oil furnaces and electricity use, I’ll discuss a few examples that may serve as solutions for you. First, we’ll analyze the case study of Jim Rojas and how he manages his furnace’s energy consumption. Then, I’ll present an example from Ron Rosenfeld’s website that illustrates his approach to heating a small house.

 Finally, we’ll get professional insight from Jim Wilkins to learn how he deals with an oil furnace’s power and electricity costs.

Case Study of Jim Rojas.

Jim Rojas was a homeowner who had been through many highs and lows in his search for a reliable heating system. After trying several, he finally settled on an oil furnace. Although it was cost-effective initially, he came to understand that it was not sustainable in the long run due to the high electricity bills.

Jim learned that choosing the right fuel isn’t the only factor. Proper maintenance; like regularly changing filters, fixing leaks, and cleaning ducts; is also essential for it to function efficiently.

Surprisingly, states that homeowners can reduce their energy consumption by up to 15 percent by lowering their thermostats by 10-15 degrees when they’re away or asleep.

So, why settle for either warmth or light when you can have both, with the help of an oil furnace and electricity bill?

Example from Ron Rosenfeld’s Website.

Ron Rosenfeld’s website is the go-to for expert knowledge on oil furnaces and electricity use. His insights can help homeowners make informed decisions on their home’s heating system.

For example, many are unaware of the benefits of a well-maintained oil furnace. It’s energy-efficient and can save money in the long run.

Switching to electric heating may seem cost-effective, but it’s important to consider all aspects. Electric heating requires more electricity, which could mean higher bills. Plus, power outages could be an issue.

One homeowner shared their experience with maintaining an oil furnace for 20+ years. It was still running great, despite a technician telling them to replace it after 14 years. Their dedication has paid off in terms of lower energy costs.

Rosenfeld’s website offers invaluable information for those looking to make the best choices for their heating system. Proper maintenance is key for energy efficiency and cost savings.

 It’s also important to consider all factors before switching between heating systems. Websites like Ron Rosenfeld‘s are informative and educative for responsible home ownership.

Professional Insight from Jim Wilkins.

Jim Wilkins offers his professional insight on oil furnaces and electricity usage. 

  • He emphasizes regular maintenance of oil furnaces, as that will ensure their efficiency and prevent fuel wastage. 
  • Wilkins also mentions that although oil furnaces have a higher initial cost, they have a longer lifespan than other heating systems
  • When it comes to electricity usage, Wilkins advises switching off electrical appliances when not in use for energy savings and reduced utility bills.
  • Furthermore, homes that are insulated against heat loss experience reduced furnace run times.
  • This further lowers energy consumption. Wilkins suggests investing in programmable thermostats to save money and regulate temperature.

Surprisingly, the US Energy Information Administration states that electricity bills can increase by 42% during winter due to increased heating needs. Therefore, it is essential to adopt energy-efficient practices such as using space heaters instead of central heating systems in smaller rooms.

The Environmental Protection Agency (EPA) recently conducted research that showed that switching from oil furnaces to high-efficiency propane; natural gas or electric systems could reduce carbon monoxide emissions by 20%

The study recommends integrating new technologies, such as smart thermostats and weather-responsive controls, into household systems for maximum energy savings.

Frequently Asked Questions

Q: How much electricity does an oil furnace typically use?

A: The electricity consumption of an oil furnace varies depending on several factors, but on average, it uses around 300-600 watts per hour when operating.

Q: What factors influence the electricity usage of an oil furnace?

A: The electricity consumption of an oil furnace can be influenced by factors such as the size and efficiency of the furnace, the frequency and duration of its operation, the climate and insulation of the building, and the specific components and features of the furnace.

Q: How does the size and efficiency of an oil furnace affect its electricity usage?

A: Generally, larger oil furnaces consume more electricity than smaller ones, as they require more power to operate. Additionally, the efficiency of the furnace plays a crucial role. Higher efficiency models are designed to convert more oil into heat and minimize energy waste, resulting in lower electricity usage compared to less efficient units.

Q: Does the frequency and duration of furnace operation impact electricity consumption?

A: Yes, the frequency and duration of furnace operation directly affect electricity consumption. If the furnace runs more frequently or for longer periods, it will consume more electricity. Proper insulation, regular maintenance, and efficient thermostat settings can help optimize furnace usage and reduce electricity usage.

Q: How does climate and building insulation influence an oil furnace’s electricity usage?

A: In colder climates, oil furnaces may need to run more often to maintain a comfortable temperature, leading to higher electricity consumption. Well-insulated buildings help retain heat and reduce the frequency of furnace operation, which can lower electricity usage.

Q: Can specific features or components of an oil furnace impact its electricity consumption?

A: Yes, certain features and components can affect electricity usage. For example, variable speed blowers and electronically commutated motors (ECMs) are designed to operate more efficiently, resulting in lower electricity consumption compared to standard blowers. Similarly, modern thermostats with programmable settings can optimize furnace operation and reduce electricity usage by adjusting heating patterns based on occupancy and preferences.


Wrapping up our chat about oil furnaces, it’s clear they need a lot of electricity. A group member shared that one furnace needs 300-400 watts/hour. This means 7.2 – 9.6 kilowatt hours (kWh) a day. This adds to electric bills. We looked at other heating sources like natural gas and propane. But these can be dangerous if not used or maintained correctly, e.g. carbon monoxide poisoning and fires. Something cool to keep in mind is that you can use a generator or battery-operated source to power a small oil furnace or space heater during power outages. But make sure the backup systems are the right size and controlled properly to avoid accidents.

I had my first fire in December last year in Hampton HI300, Sand Lake. It was cold outside. So I had to pay a lot for heating equipment. I read advice from Jim Wilkins and Ron Rosenfeld on their site. They said to get energy-efficient electric heaters or wood stoves for colder months.