
Is the pilot light of a tankless water heater wasted energy?
The pilot light of a tankless water heater is wasted energy because it is not heating water until demand calls for it and the main burner ignites. For a storage water heater, the pilot light serves as standby heat, keeping the water warm at times of no demand. Think of it as a low burner under the teakettle that maintains a warm temperature.
Do electric water heaters have pilot lights?
Electric water heaters do not have pilot lights. Since electric water heaters use electricity instead of gas, they do not need any ignition to heat water. Hence, there is no pilot light. So, an electric water heater is the same as a conventional water heater but without the pilot light.
What is a tankless water heater?
Tankless water heaters provide hot water on demand, rather than storing heated water in a tank for use. These appliances can offer greater energy efficiency over storage tank models, as well as endless hot water that will never run out.
Why does my tankless water heater keep Tripping the circuit?
If your water heater trips its circuit frequently, there could be an electrical problem that you’ll need your plumber to address. Similarly, if there is no pilot light, the pilot won’t stay lit, or you think there may be a gas problem, call for professional tankless water heater repair as soon as possible.

How do you light the pilot on a tankless water heater?
How to Light a Water Heater Pilot LightOpen the door/cover over the pilot light access. ... Use a flashlight or a headlamp to find the burner inside. ... Turn the gas knob to “Pilot,” press and hold it down. ... While still holding the gas down, light that pilot.More items...•
How does a tankless water heater ignite?
1:327:16How Tankless Water Heaters Work - YouTubeYouTubeStart of suggested clipEnd of suggested clipThat's why they're so small instead they heat the water instantly as it's demanded as soon as a hotMoreThat's why they're so small instead they heat the water instantly as it's demanded as soon as a hot water tap is turned on anywhere in your home internal sensors inside the heater detect the flow.
Do you need to light a tankless water heater?
All tankless water heaters require electricity to function properly ‒ even gas-powered models. Electric heaters require electricity to heat the water, but both need electricity to power their electronic control system, ignition system, and remote thermostats.
Why is my tankless water heater not igniting?
My Gas Tankless Water Heater Won't Ignite Check the gas valve and ensure that it is open, and that you have paid your gas bill. Check all sensors, wiring fuses, and electrical components to ensure they have not burned out. Ensure there is no condensation or debris on the burners that may cause them to not ignite.
What is the most common problems with tankless water heaters?
Here are six of the most common problems and maintenance concerns for tankless water heaters:Mineral Buildup.System Overload.Cold Water Sandwich.Air Supply or Exhaust Blockage.Ignition Failure.Flame Failure.
Do gas tankless water heaters work when the power is out?
While on-demand gas water heaters don't rely on electricity as a fuel source to heat water, on-demand heaters usually have a control panel that is powered by electricity which is the 'brains' of the water heater. So even a tankless gas water heater will not work independently in a power outage.
Do tankless water heaters increase electric bill?
You can check if tankless water heaters are actually worth it and if they save you money here. Most households use less than 41 gallons of water per day. 24% – 34% is quite a lot of energy savings....Tankless Water Heater Electricity Usage By Hour.Wattage Of Electric Tankless HeaterCost Per Running Hour30 kW$3,9622 more rows
What maintenance is needed on a tankless water heater?
The most complicated and time-consuming tankless water heater maintenance is typically descaling and flushing out the unit. Even with the inline water filter, lime and calcium deposits can build up inside the tankless system. If you have hard water, it's a good idea to descale and flush the unit once a year.
Does a Rinnai tankless water heater have a pilot light?
Rinnai Tankless Water Heaters don't have a standing pilot light. They use an electronic ignition.
How do I restart my tankless water heater?
0:010:41How To Reset Your Tankless Water Heater - YouTubeYouTubeStart of suggested clipEnd of suggested clipThen you can shut it off from the breaker. Wait 30 seconds. And then resupply the power. If you doMoreThen you can shut it off from the breaker. Wait 30 seconds. And then resupply the power. If you do notice any type of leaking coming from the inside of your tankless.
Is there a reset button on a tankless water heater?
You may have heard that tankless units don't have a pilot light like your standard water heater. The good news is, your tankless water heater does have a reset button that will power up the unit once more.
What is the lifespan of a tankless water heater?
Longer Product Life A standard water heater tank lasts about 8-12 years. A tankless water heater can last as long as 25 years!
Does a Rinnai tankless water heater have a pilot light?
Rinnai Tankless Water Heaters don't have a standing pilot light. They use an electronic ignition.
How does an electronic ignition water heater work?
A defining characteristic of the electronic ignition system is its working mechanism. Modern electronic ignition systems turn on only when needed. As such, this ignition system will only light up and use energy when the water heater, burner, or boiler needs heat input.
Do new hot water heaters have pilot lights?
Your hot water heater pilot light can usually be found beneath the water tank on your unit. You may need to remove an access panel to access it. Some newer models may have the pilot light behind a glass panel.
How does a tankless gas water heater work?
Tankless water heaters work by using an electric element or gas burner to warm the water as it travels through a pipe and into the unit. This delivers a near endless supply of hot water and provides instantaneous comfort and convenience. Unlike traditional water heaters, the hot water supply is not stored in the tank.
Why won't my tankless water heater stay lit?
If your water heater trips its circuit frequently, there could be an electrical problem that you’ll need your plumber to address. Similarly, if there is no pilot light, the pilot won’t stay lit, or you think there may be a gas problem, call for professional tankless water heater repair as soon as possible.
Why does my tankless water heater keep fluctuating?
Fluctuating Hot Water. If you experience fluctuations in the temperature of the hot water your tankless unit produces, it may be due to an issue affecting the flow of water through the unit. This may also be the case if your tankless water heater’s thermostat is set correctly, but you are continually finding that your hot water doesn’t reach ...
What to do when you call for a water heater repair?
When you call for water heater repair, your plumber will check and clean the unit to make sure no dirt, debris, or mineral buildup is affecting the flow inside the appliance.
Can a tankless water heater run out?
Troubleshooting Your Tankless Water Heater. Tankless water heaters provide hot water on demand, rather than storing heated water in a tank for use. These appliances can offer greater energy efficiency over storage tank models, as well as endless hot water that will never run out. Although tankless water heaters are reliable and easy to maintain, ...
Do tankless water heaters need to be flowed?
Tankless water heaters require a minimum amount of flow before they can heat water properly —if your water pressure is experiencing fluctuations due to another plumbing issue, it will also affect your water heater’s ability to produce the hot water you need.
