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Written byTim Rhodes Last updated: March 8, 2023
Water heaters are an essential part of any home. They supply hot water for showers, dishes and laundry. Gas water heaters are attractive because they are less expensive than electric ones. But does a gas water heater use electricity?
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Does a gas water heater use electricity?
A gas heater does not use electricity. This type of heater uses natural gas to heat water. The only time a gas water heater will use electricity is when it has electronic ignition. Some models have a pilot light that needs to be lit manually.
Although a gas heater does not use electricity to heat the water, it can use it to power a fan or blower. These components are used to vent the exhaust gases from natural gas. The fan or blower only works when the heater is on.
How does a gas water heater work without electricity?
A gas water heater uses natural gas to heat water. The hot water then flows to your taps and fixtures when you need it.
Your gas water heater consists of a few essential parts. The first is the burner. The burner is located at the bottom of the tank and uses natural gas to generate heat.
The heat generated by the burner goes into the water in the tank, making it hot. The second part is the thermostat, located above the burner. The thermostat monitors the temperature of the water in the tank and turns the burner on or off to keep the water at a set temperature.
The third part is the anode rod, which is metal and helps prevent rusting in the tank. The anode rod sits in the center of the tank and sacrifices itself over time to protect the rest of the tank from rusting.
The fourth and final part is insulation, which helps retain heat in the tank and prevents heat loss. The insulation is around the outside of the tank.
Now that you know how a gas water heater works, you can fix any problems that you may encounter with your own appliance. If you have any questions, be sure to refer to your owner's manual or contact a qualified technician for assistance.
Types of gas water heaters
There are two main types of gas water heaters: storage tank and tankless.
Storage tank gas water heaters have a hot water tank that is kept at a constant temperature, while tankless gas water heaters heat water on demand.
Both types of gas water heaters run on natural gas or propane gas. Gas water heaters are more energy efficient than electric water heaters and tend to last longer.
When choosing a gas water heater, it's important to consider the size of your home, your family's hot water needs, and the climate in your area.
Tips for maintaining your water heater
The following tips will help you keep your gas water heater in good condition:
- Check the manufacturer's instructions for specific maintenance tasks that need to be performed on your model
- Once a year, flush out the sediment that has accumulated in the tank. Scale can reduce the efficiency of your water heater and lead to premature wear
- Check the anode rod regularly. The anode rod helps prevent corrosion, so it's important to make sure it's in good condition. If it needs to be replaced, follow the manufacturer's instructions
- Make sure there is enough clearance around the water heater for proper ventilation
- Check the vent system regularly to ensure it is clear and functional
- If you have any questions or concerns about maintaining your gas water heater, please feel free to contact a qualified professional for assistance
Make sure you understand how your gas water heater works and follow the manufacturer's instructions for proper maintenance. Taking good care of your water heater can extend its life and keep it running efficiently.
Operating costs for gas and electric water heaters
While a natural gas water heater costs more upfront, over time it costs less to run than an electric water heater.
A 50-gallon natural gas water heater costs an average of $400, while an electric model of the same size costs around $600.
However, natural gas is cheaper than electricity, so a natural gas water heater will save you money in the long run. Additionally, a natural gas water heater is typically more energy efficient than an electric water heater, which means it uses less energy and costs even less to run.
In terms of efficiency, gas models are typically around 25% more efficient than electric models. That means for every dollar you spend on gas, you get about $1.25 worth of heat.
Electric models are more economical to run in warmer climates where the water temperature is not as high. However, they are not as efficient as petrol, so you end up paying more in the long run.
If you have a small household and use little hot water, an electric model might be the best choice for you. But if you have a larger household or use a lot of hot water, a gas model will save you money in the long run.
How long does it take to heat up a gas water heater?
It takes a little longer to heat water with a gas instantaneous water heater than with a storage tank. Gas storage water heaters can provide enough hot water for a family of four to meet their needs. But if someone in the family takes a long shower, there may not be enough hot water left for the next person in line.
How long does it take to heat up cold water with a gas instantaneous water heater? It depends on how much hot water your family needs at any given time. Let's say everyone in your household takes turns taking a shower. In this case, you need a device that can handle more hot water demand than just one person taking a shower while the others do other things in the house that don't require hot water.
The size of the tankless unit is also important. A larger unit can heat more cold water per minute than a smaller one. When shopping for a new non-tankless gas water heater, be sure to choose one that is the right size for your home and your family's needs.
Frequently Asked Questions (FAQs)
If you have additional questions or want to learn more about gas water heaters, here are answers to some frequently asked questions:
How long does the water stay hot in the gas water heater without electricity?
The average gas water heater keeps water warm for about 24 hours. However, this time may be shorter or longer depending on your water heater model, the size of your tank and the ambient temperature.
What is the difference between a gas and an electric water heater?
The main difference between a gas and an electric water heater is the fuel type. A gas water heater uses natural gas to heat the water, while an electric water heater uses electricity. In terms of running costs, a gas water heater is usually cheaper to run than an electric water heater.
Which is more efficient, a gas or electric boiler?
A gas water heater is typically more energy efficient than an electric water heater. This means it uses less energy and has lower running costs. In terms of efficiency, gas models are typically around 25% more efficient than electric models.
How much does it cost to install a gas boiler?
The total cost of installation may vary depending on the type and size of the unit and the complexity of the installation. However, you can expect to pay anywhere from $500 to $1,500 to install it.
How much does it cost to operate a gas boiler?
The cost of running a gas water heater depends on natural gas prices in your area. However, you can expect to pay about $0.60 per day to run a 50 gallon natural gas water heater.
Final Thoughts
Gas water heaters don't use electricity, they use gas. However, some models of gas water heaters may have an electric ignition system. These systems use a small amount of electricity to ignite the burner. Otherwise, gas boilers do not consume electricity.
They are more efficient than electric models and can provide enough hot water for a family of four. If you have a larger household or use a lot of hot water, you will save money in the long run with a gas model. Just make sure you choose the right size unit for your needs and budget.
If you're still unsure if a gas water heater is right for you, feel free to consult a local plumber or HVAC contractor. They can help you make the best decision for your home and family.