How To Thaw Out A Tankless Water Heater


Why does a tankless water heater go cold?

A broken flow sensor can cause your tankless water heater to run hot and cold. The flow sensor measures the water entering your system and sends that information to your unit’s control board. If there’s a burst of cold coming into the system, then the controller adjusts the flame.

Why is my hot water frozen but not my cold?

The temperature of icy winter can cause the hot water pipes to freeze or even crack. It is a strange thing that hot water pipes freeze quickly than cold water pipes. By increasing the temperature of your house, you can attempt to unfreeze the frozen pipe.

How long does it take for pipes to unfreeze?

If you choose to unfreeze your own pipes, how long it takes for pipes to thaw depends on whether the pipes are exposed, enclosed, or underground. It will take roughly 30-40 minutes of using a heat source to thaw exposed pipes.

Will pouring hot water down the drain unfreeze pipes?

In most cases, you can unfreeze a frozen drainpipe by pouring hot water down it. Fill a pot with a half-gallon of water, and heat it on the stove. When it begins to boil, carefully remove it from the stove and slowly pour it down the drain. This may be enough to thaw the ice and completely clear your drain.

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Why does my Navien tankless water heater keep shutting off?

One of the most common reasons that your tankless hot water stops working in the shower is because your current unit can’t supply enough hot water per minute. If you’re attempting to do the laundry, run the dishwasher, and shower at the same time, then you’re likely straining your on-demand water system’s capabilities.

Can water heater explode if turned off?

The answer is a resounding YES. Electric water heaters absolutely can explode. That’s not to say you should necessarily be concerned. Water heaters that are installed and maintained properly almost never do so, and having a legitimate technician install and maintain your water heater is always the best option.

Will a tankless water heater work during a power outage?

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 you have to drain a tankless water heater?

Just like a tank unit, tankless water heaters need to be flushed once per year. Homeowners with hard water should consider flushing and cleaning the unit even more frequently, perhaps every six to nine months because of the excess amounts of magnesium and calcium found in hard water supplies.

When should I turn off my tankless water heater?

Tankless and point-of-use water heaters do not need to be shut off in any case to a water shutoff, as they do not run heating elements continuously or hold water in a storage tank.

Do tankless water heaters work in cold climates?

Yes, gas tankless water heaters can work well, even in cold climates, as long as the unit has been sized correctly to meet the hot water needs of your particular household.

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