How Much Energy Does a Water Heater Use? 

Your faucets, showerheads and plumbing appliances use lots of hot water. As a matter of fact, the Department of Energy states that water heating is the second-largest utility cost behind space heating and cooling, accounting for approximately 18% of your monthly bill. Find out more about how much energy the average water heater uses and helpful tips to decrease your water heating costs. 

How Much Electricity Does an Electric Water Heater Use? 

The total cost to run an electric water heater is based on the size of the unit, how much you use it, its power needs and average costs for electricity. For example, a medium-sized, 40-gallon water heater that needs 4500 watts and is active for two hours a day at a rate of $0.13 per kilowatt-hour (kWh) costs about $1.17 to run per day, which comes to $35 each month or $426 per year. 

How Much Natural Gas Does a Gas-Fired Water Heater Use? 

If your water heater uses natural gas, you have to consider the size of the unit, how much you use it, its power draw and the price for natural gas. For instance, a medium-sized, 40-gallon water heater that uses .205 therms per hour and is active for a couple of hours each day at a rate of $1 per therm costs about $0.62 to operate per day, which comes to $18.60 monthly or $226 each year. 

Gas vs. Electric Water Heater Costs 

As you can determine from the examples above, gas water heaters typically cost less to operate than equivalent electric models because natural gas prices tend to run lower than electricity costs. Refine the calculations with your exact energy usage and rates to get a more accurate picture of gas vs. electric water heater expenses. 

Tips to Reduce Your Water Heating Bills 

Whether your water heater runs using electricity or gas, you can cut your utility costs with these money-saving suggestions. 

Change Up Your Hot Water Habits 

Keep in mind that each time you turn on a hot water faucet, you must pay to heat it. Modify your daily habits to reduce costs. Here’s how: 

  • Take faster showers.  
  • Only use the dishwasher and washing machine with full loads.  
  • Limit pre-rinsing dishes before placing them into the dishwasher. 
  • Launder your clothes in cold water as much as possible. 

Resolve Plumbing Leaks 

Leaky faucets, showerheads and pipes can waste significant quantities of hot water. For instance, one drip per second wastes over 1,600 gallons annually. Eliminate this waste by repairing plumbing leaks as soon as you discover them. 

Install Low-Flow Faucets and Showerheads 

Modern rules require new showerheads to consume 2.5 gallons per minute (gpm) or less while kitchen faucets are limited to 2.2 gpm. New bathroom faucets must have flow rates below 1.5 gpm. 

You can purchase quality, low-flow kitchen and bathroom fixtures for about $10 to $20 each, resulting in approximately 60% savings on water use. Look for the ENERGY STAR® WaterSense label to maximize efficiency without negatively impacting performance. 

Turn Down the Water Heater Temperature 

The standard setting is 140 degrees. Lower this to 120 degrees to save on water heating costs and minimize the risk of scalding at the tap. Just don’t go any lower than 120 degrees to discourage microbial growth inside the tank. 

In case your water heater doesn’t have a temperature readout, determine the setting with a thermometer at the bathroom or kitchen tap. Adjust the water heater’s dial, wait two hours and measure the water’s temperature. Repeat this process until the thermometer shows 120 degrees. 

Add Insulation 

Both electric and natural gas water heaters can be insulated with insulated jackets available at home improvement stores. Be mindful to install the jacket correctly to avoid creating a dangerous operating situation. When in doubt, ask a professional for help. When the tank is insulated, add insulation to the hot and cold pipes coming from the water heater to help things heat up faster at the faucet. 

Buy More Efficient Equipment 

In case your water heater is approaching the end of its life span, consider replacing it with an ENERGY STAR-rated model. A tankless water heater is another option. This upgrade can save approximately 34% on your water heating bills by generating hot water on demand and getting rid of standby heat loss. Save energy and lower costs by replacing your hot water appliances with high-efficiency models, including your dishwasher and washing machine. 

Schedule Water Heater Services with an Expert 

Service Experts Heating, Air Conditioning & Plumbing is your source for reliable, affordable water heater services in North America. Our highly trained technicians can fulfill any water heater repair or replacement request that comes our way. We carry top products from today’s best brands, including traditional tanks as well as tankless models, to suit your needs while staying in your budget. To learn more, please contact your local Service Experts Heating, Air Conditioning & Plumbing office today. 

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