How Much Electricity Does A Gas Furnace Use Per Month?


Gas furnaces are popular heating appliances, due to their energy efficiency and low running costs. Electricity consumption is minimal – usually 300-600 watts per hour. The motor type affects the power usage: PSC motors are not as efficient as ECM motors. The latter have a variable speed control system that adjusts to external conditions. How often the furnace cycles also impacts energy usage. High AFUE ratings use less gas each month.

How Much Electricity Does A Gas Furnace Use Per Month?

Other factors to consider are motor type, burner ignition process, air handler pressure, ductwork size, temperature requirements, and more. Mosby’s article states that each therm of natural gas generates around 29 kWh/month. Who knew gas furnaces were electricity thieves?

Gas Furnace Electricity Usage

To understand how much electricity a gas furnace uses per month, you need to check the electricity consumption of the motor types and fan motor speed in gas furnaces. You also need to factor in the gas furnace blower and its electricity usage. In this section, we will explore these factors to help you understand gas furnace electricity usage better. We will look at the different motor types in gas furnaces, the impact of fan motor speed on electricity consumption, and the effect of the gas furnace blower on electricity use.

Motor Types in Gas Furnaces

Gas furnaces use various motors to power the system. These motors are essential for the furnace’s performance, energy efficiency, and electricity consumption.

We’ve created a table to compare motor types. It shows Permanent Split Capacitor (PSC) Motors, Electronically Commutated Motors (ECM), and Brushless DC (BLDC) Motors. It also has power output and efficiency levels.

Motor typeFeaturesPowe outputEfficiency
PSCAffordable and Reliable1/3 – 2HPLow – Standard
ECMEnergy Efficient and Quiet 1/4 – 1/2HPHigh
BLDCHigh Efficiency and LongevityUp to 1 HPVer High

PSC motors are the least expensive but use more energy than other motor types. ECMs have better-speed regulation while using less energy. BLDC motors use even less electric current, making them highly efficient.

It’s important to choose a high-efficiency motor when replacing or upgrading a furnace. ECMs or BLDCs are the best options to save money on monthly utility bills and reduce your carbon footprint.

Don’t miss out! Upgrade your gas furnace today to become more efficient and eco-friendly.

PSC Motors

Electricity usage of  Permanent Split Capacitor (PSC) Motors in gas furnaces varies. These motors use electricity to control the blower speed.

See below for a table of energy usage by PSC Motors based on their horsepower and amperage:


These values are estimates and can differ between brands and models.

It’s important to know that not all motors in gas furnaces are equal. They have different efficiency ratings, which have an effect on power usage. Plus, proper furnace maintenance can influence how much power the PSC Motors consume.

Pro Tip: Regularly maintain your gas furnace to boost its efficiency and reduce electricity consumption. Make sure your ECM motor is always pushing your wallet to exercise!

ECM Motors

Say hello to the electrically commutated motor (ECM). This modern gas furnace component has made energy efficiency soar. Replacing multiple types of motors, it’s now used in both residential and commercial settings.

Check out this table with electrical current ratings for various ECM motor models:

ModelNominal VoltageMax Current Draw
X115 VAC3.5 A
Y230 VAC2.5 A
Z208-230 VAC2.0 A

ECM’s variable speed technology means it stays efficient no matter the ductwork size. Plus, it helps maintain consistent temperatures in homes and buildings with fewer airflow adjustments.

ECMs came to the HVAC industry in the 80s, mainly for refrigeration. Then, manufacturers saw their energy-saving potential and environmental benefits. So, they started using them more in heating and cooling systems.

Fan Motor Speed and Electricity Consumption

The relationship between fan motor speed and electricity usage in gas furnaces is worth exploring. A table can show the correlation. At low speeds, electricity usage is low. But higher speeds require more electricity. For example, a low speed uses 300w, medium 500w, and high 1000w.

SpeedElectricity usage

Apart from heating output, other factors like insulation or ambient temperature influence performance. This impacts energy efficiency and costs. Understanding this allows for better HVAC maintenance. Fan speeds can be adjusted when cleaning air filters, and this can improve energy savings.

Advances in furnace technology have changed traditional notions about optimal fan speeds and their impact on energy consumption. It’s important to understand how components contribute to power usage to optimize total consumption and get desired heating outcomes. Why settle for one speed when you can have low and high?

Low and High-Speed Fan Motor Electricity Use

Understanding the electricity consumption of low and high-speed fan motors in gas furnaces is key. The speed of fans has a big effect on power use. So, managing furnace electricity is essential.

Here’s a table with information on low and high-speed fan motor electricity usage:

Fan SpeedElectricity Usage (Watts)

Other factors can also affect furnace energy consumption. These include age, insulation, and environmental conditions. Good maintenance and cleaning will help keep energy costs down.

To save even more energy with your gas furnace, install a programmable thermostat, seal windows/doors, and replace air filters regularly. This will lower furnace energy costs and enhance energy efficiency in the home. ECM fans may sound great, but they’ll make your electricity bill skyrocket.

ECM Fan Motors and Electricity Use

ECM fan motors are a crucial part of gas furnaces that use electrical power. They’re efficient, resulting in lower energy bills and a smaller carbon footprint. Here’s why:

  • ECM motors run at variable speeds, making them more efficient than single-speed motors.
  • They consume only the necessary electricity for the desired temperature.
  • ECM fan motors increase a furnace’s performance by providing a consistent airflow.
  • This improved performance can extend a furnace’s life, reducing repair costs and downtime.
  • ECM fan motors are now essential for new gas furnaces due to their control over energy.
  • These motors are more eco-friendly than older models.

But before you install one, be sure to speak to an HVAC technician. ECM fans have been an invaluable addition to sustainable energy initiatives worldwide. Saving money on electricity? That’s more magical than unicorn tears!

Gas Furnace Blower and Electricity Use

The electricity consumption of gas furnace blowers varies. It can be between 500 to 1200 watts when running. Still, it’s minimal compared to other home appliances. The thermostat controls the motor’s speed according to the temperature you choose.

Furnaces with variable-speed blowers can save energy. They enhance heating performance without using too much electricity. Plus, Energy Star-certified furnaces have AFUE ratings above 90%. This can reduce electricity usage by 30% compared to standard models.

Knowing how much energy your gas furnace uses helps you save energy. The U.S. Department of Energy recommends regular maintenance for optimal efficiency. This extends its lifespan and improves its performance.

It looks like the bigger the blower, the higher your electricity bill will be. So, decide: warmth or wealth?

Blower Size and Electricity Consumption

The size of the blower motor used in gas furnaces has a major effect on electricity consumption. Knowing the link between them is important for energy management.

A chart comparing different blower sizes and their electricity usage can give insight into this relationship.

Blower SizeElectricity Consumption (kWh)

Apart from the blower size, regular maintenance and replacing air filters can also increase energy efficiency in gas furnaces.

Interestingly, the idea of using blowers in furnaces was first used by Benjamin Franklin during his heating system experiments in the early 1740s.

Blower Fan Motor Types and Electricity Use

Gas furnaces are often equipped with blower motors. To compare their electricity consumption, a table is made. It shows Permanent Split Capacitor (PSC) motors use 400-600 Watts, while Electronically Commutated Motors (ECM) use 60-120 Watts.

ECM motors are much more energy-efficient! Homeowners love this, as it keeps their electricity bills low.

Gas furnace technology has improved a lot over time. Earlier models used PSC motors, wasting a lot of energy. Nowadays, ECM motors are preferred as they last longer and use less electricity.

To get the most out of your gas furnace, maintain the filter and set the thermostat properly. This will help reduce electricity consumption.

Factors Affecting Gas Furnace Electricity Usage

To better understand your gas furnace’s power consumption, let’s discuss the factors that can affect your electricity usage. In this section, we’ll look at how the efficiency of gas furnace burners, gas furnace cycling, HVAC equipment, and weather can play a role in your energy bill. We’ll take a closer look at each of these sub-sections to give you an idea of how they can impact the electricity usage of your gas furnace.

Efficiency of Gas Furnace Burners

Gas furnaces have burners that determine how effective they are. The burner’s efficiency is the percentage of fuel energy that is transformed into heat energy, which warms up your home.

Age of FurnaceOver time, gas furnace burners wear down and become less efficient.
MaintenanceCleaning and inspection can help maximize burner performance.
Airflow/ Filter conditionBad airflow or dirty filters can cause the burners to overwork, reducing efficiency.
Thermostat settingSetting the burners too high or low makes the burners inefficient by cycling on/off more than necessary.

Maintenance is key to great burner performance. Cleaning and inspection can catch problems before they cause inefficiency.

To optimize temperature settings and reduce unnecessary cycling, install programmable thermostats. Plus, proper insulation throughout your home keeps warm air from escaping through cracks or openings.

Maximize your gas furnace efficiency to save money and stay comfortable in colder months.

Gas Furnace Cycling and Electricity Use

Gas furnaces are linked to electricity use. The frequency of cycling has a big impact on power consumption. When the furnace cycles often, the blower fan uses more electricity. So, the gap between heating cycles affects how much electricity is used.

Other things may also affect the electricity used by a gas furnace, like its age and energy efficiency rating. A new, efficient furnace uses less fuel and energy than an old one. Location matters too. Homes in colder climates need more heating, meaning higher electricity usage.

Gas furnaces are usually cheaper to operate than electric ones, but still have a huge effect on home energy bills. According to, space heating makes up 42% of US household energy use. On average, US households spent $1072 on space heating in 2020 – 30% of their total bill.

Remember, to save on bills, don’t try to fix your HVAC system with a hammer and duct tape.

HVAC Equipment Efficiency and Electricity Consumption

Enhance the Efficiency of HVAC Equipment for reduced Electricity Use!

The efficiency of HVAC equipment has a huge effect on electricity consumption in gas furnaces. Special HVAC equipment made to work efficiently can have a major impact on reducing electricity use in gas furnaces.

Let’s check out this table:

Equipment TypeAFUE RatingElectricity Use
Conventional Gas Furnace80High
High-Efficiency Gas Furnace95Low

This table proves that a high-efficiency gas furnace with an AFUE rating of 95 consumes less electricity than a conventional gas furnace with an AFUE rating of 80.

Furthermore, other things that affect electricity use include proper installation, regular maintenance, and timely repair. Doing these tips can lead to more decreased energy consumption and help increase the lifespan of the HVAC equipment.

So, paying attention to the right installation methods, routine maintenance checks (like replacing filters), and necessary repairs can result in improved effectiveness of all types of HVAC equipment and substantially reduce unnecessary electricity usage. Unpredictable as the weather may be, you can still make sure your gas furnace’s electricity use isn’t!

Weather and Gas Furnace Electricity Use

The correlation between climate and power consumption in gas furnaces is clear – weather patterns affect output. Extreme temperature changes can have a big impact, especially in winter when more electricity is used. On the flip side, milder weather leads to less energy use due to fewer furnace cycles.

Two crucial elements that influence power consumption are the internal combustion process and thermostat setting. Efficient combustion eliminates energy loss, and optimizing the thermostat helps control energy.

Pro Tip: Proper insulation reduces heat loss and, therefore, power usage – even in severe weather conditions. Get your calculator ready for some head-spinning math – just like your electricity meter when your gas furnace is running!

Calculating Gas Furnace Electricity Usage

To help you determine how much electricity your gas furnace uses per month, we’ll explore the section ‘Calculating Gas Furnace Electricity Usage‘ with sub-sections ‘Understanding Kilowatt Hours’, ‘Gas Furnace Maximum Wattage and Electricity Use’, and ‘Using Therms to Calculate Gas Furnace Energy Use. By understanding these factors, you can easily calculate your gas furnace’s energy consumption and make informed decisions on energy usage to reduce your monthly bill.

Understanding Kilowatt Hours

Kilowatt Hours (kWh) measure electric energy used over a period. Calculate it by multiplying appliance wattage by hours used, then divide by 1,000. Use kWh to figure out the total cost of running a gas furnace. Plus, compare different models for energy-efficiency.

Gas furnaces use electricity in many ways. Blower motor, control board, igniter – each use different amounts depending on the furnace. Use kWh to monitor energy consumption and adjust usage.

Also, determine how efficiently a gas furnace uses electricity – this helps calculate overall efficiency. The AFUE rating system measures both fuel and electrical energy consumed. A 90% AFUE rating means 90% of fuel burned gets converted into heat. reports that heating makes up 29% of residential energy consumption in America. So, get a gas furnace that uses less electricity. This could save households up to $1,000 annually on heating costs. Wow!

Gas Furnace Maximum Wattage and Electricity Use

Doin’ the Math on Gas Furnace Electrical Consumption

It’s essential to know a gas furnace’s maximum wattage and electricity use for efficient operation. This information helps homeowners save on energy costs and plan for any electrical upgrades. Check out the table below for the maximum wattage and electricity use of various gas furnace models.

Gas Furnace ModelMax WattagElectricity Use
Goodman GMVC9576,000 W1,190 kWh
Lennox Elite Series EL296V72,000 W1,190 kWh
Carrier Infinity 96 Gas Furnace80,000 W1,190 kWh

Bear in mind that these are estimates based on typical usage. To get an accurate reading, monitor your monthly energy bills. Plus, regular maintenance of the gas furnace can help optimize energy efficiency. Change air filters and schedule professional inspections to avoid electricity waste and extend the heater’s lifespan.

Pro Tip: Invest in a programmable thermostat. Schedule temperatures to adjust automatically when you’re away or asleep. This way, you can reduce electricity use without sacrificing comfort.

Using Therms to Calculate Gas Furnace Energy Use

To determine the energy use of a gas furnace, take its therm measurement into account. A therm equals 100,000 BTUs (British Thermal Units) of heat. So, measure how many therms your furnace uses and calculate electricity usage over time.

We created a table to provide an example calculation. In this case, a gas furnace used 12 therms in a month. That’s 1.2 million BTUs. To convert BTUs to kWh, divide by 3,412. Result: ~351 kWh for the month.

Therms Used12
Total BTUs1.2 million
kWh Conversion1.2 million/3412
Estimated Electricity Usage (kWh)351

Managing home energy consumption is important. Invest in smart home technologies or renewable energy sources such as solar panels or wind turbines. These solutions can save money and benefit the planet. Or, get cozy with a hot water bottle instead of turning up the heat on your gas furnace.

Managing Gas Furnace Electricity Costs

To manage your gas furnace electricity costs effectively, we’ll explain how you can minimize your electricity usage and save on energy bills efficiently. There are two ways that can help you achieve this, ‘Lowering Gas Furnace Electricity Usage’ and ‘Using Energy Efficient Gas Furnaces and HVAC Equipment’. By exploring these methods, you will understand how to reduce energy consumption, lower your electric bill and optimize energy usage.

Lowering Gas Furnace Electricity Usage

Reduce the electricity used by your gas furnace? It’s possible! Here’s a 4-step guide to help you out:

  1. Install a programmable thermostat. Adjust the temperature of your home during peak hours and save energy.
  2. Replace air filters monthly. Clogged filters make your furnace work harder and use more electricity.
  3. Seal air leaks. Insulate doors, windows, ducts, and vents to stop cold air from entering.
  4. Schedule maintenance. Make sure the system is working efficiently and cutting down on electricity usage.

Also, adjust temperatures of rooms according to their use for further energy savings. Additionally, switch off pilot lights when not in use, upgrade insulation systems, and use ceiling fans wisely. Implementing these measures will ensure optimal electricity control and cost-efficiency. Upgrade to energy-efficient models, and your HVAC equipment will thank you.

Using Energy Efficient Gas Furnaces and HVAC Equipment

Maximizing energy efficiency is the key to managing electricity costs when using gas furnaces and HVAC equipment. High-efficiency models save you money in the long-term, reducing electricity bills and improving heating performance. Features like two-stage burners, variable-speed blowers, and programmable thermostats all work together to boost efficiency and keep your home comfy.

It’s vital to inspect and properly maintain your furnace and HVAC equipment. An energy-efficient unit can lose its efficiency over time if not given attention. Checking air filters, cleaning ducts, lubricating parts, and sealing leaks are all part of routine maintenance. Plus, proper airflow prevents costly furnace damage.

For added savings, enlist the help of professionals for routine inspections and repairs. HVAC inspections ensure optimal performance is achieved while identifying any possible issues. Licensed contractors guarantee safety, durability, and efficiency with a properly installed unit.

Pro Tip: When replacing an old furnace unit or installing a new one, go for high-efficiency models with ENERGY STAR certification. It ensures maximum energy savings, plus reliable warranties on system components. Saving money on gas furnace electricity is not glamorous, but it beats freezing in the dark!


Analyzing gas furnace electricity use, it is evident that motors, fan motors, and igniters have a large impact on energy consumption. There are two types of motors: PSC and ECM. ECM motors are more efficient & offer different speed levels, which helps lower electricity usage and heating costs. Average monthly kWh usage ranges from 250-700 kWh, depending on brand size, cycles, & HVAC optimization/remodeling.

Size is an important factor in determining electricity costs. Check the appliance’s manual for power consumption during operation, especially if you have bathroom fans or humidifiers that can increase energy usage.

Pro Tip: During a power outage, natural gas-powered appliances like water heaters and furnaces can provide warmth & information. However, they need a generator with enough wattage to handle the maximum output rating of all appliances running simultaneously.