How Much Energy Does a Water Heater Use? 

Your faucets, showerheads and plumbing appliances use a lot 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 about 18% of your monthly bill. Discover 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 determined by the size of the unit, how much you use it, its power draw and what you pay for electricity. As an example, a medium-sized, 40-gallon water heater that draws 4500 watts and is active for 2 hours a day at a rate of $0.13 per kilowatt-hour (kWh) costs about $1.17 to work per day, which arrives at $35 each month or $426 per year. 

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

If your water heater runs using natural gas, you must consider the size of the unit, how much you use it, its power draw and typical costs 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 a day at a cost of $1 per therm costs about $0.62 to operate per day, which is roughly $18.60 per month or $226 per 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 have a tendency 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 lower your utility costs with these money-saving tips. 

Change Your Hot Water Habits 

Keep in mind that each time you turn on a hot water tap, you have to pay to heat it. Modify your daily habits to lower your bills. Here’s how: 

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

Seal Plumbing Leaks 

Leaky faucets, showerheads and pipes can waste large amounts of hot water. For instance, one drip per second adds up to more than 1,600 gallons each year. Eliminate this waste by handling plumbing leaks as soon as you identify them. 

Install Low-Flow Faucets and Showerheads 

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

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

Turn Down the Water Heater Temperature 

The default 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 in the tank. 

In case your water heater doesn’t include 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 check the water’s temperature. Repeat this process until the thermometer reaches 120 degrees. 

Add Insulation 

Both electric and natural gas water heaters can be insulated with special jackets available at home improvement retailers. Be careful to install the jacket correctly to avoid creating a dangerous operating situation. If you’re not sure how to proceed, ask a professional for help. When the tank is insulated, add insulation around the hot and cold pipes coming from the water heater to help things heat up faster at the tap. 

Buy More Efficient Equipment 

If your water heater is nearing the end of its life span, look at replacing it with an ENERGY STAR-rated model. A tankless water heater is another option. This upgrade can save up to 34% on your water heating bills by heating water on demand and cutting out standby heat loss. Save energy and lower costs by replacing your hot water appliances with high-efficiency models, including the dishwasher and washing machine. 

Schedule Water Heater Services with an Expert 

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

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