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"What are the most common problems with tankless water heaters?"
Because tankless water heaters heat water “on demand” — for example, when someone turns on the hot water for a shower — they may not be able to supply enough hot water for multiple, simultaneous uses in one house (for example, taking a shower, running the dish washer, and doing laundry at the same time). This isn’t often the case with storage water heaters, which hold a supply of water in a tank, and then heats the water. Tankless water heaters that have a higher flow rate — which is measured in gallons per minute (gpm) — can supply more hot water to a house at one time.
In addition, tankless water heaters won’t work during a power outage; electricity is needed to control their spark igniter.
In general, however, tankless water heaters require less maintenance than storage water heaters. This is partly because water can collect in the tank of a storage water heater, and the minerals in the water can corrode the tank over time, causing leaking.< Answer>
"Can tankless water heaters be repaired?"
Yes, tankless water heaters can be repaired. Tankless water heaters normally have a life expectancy of about 20 years — around 5 to 10 years longer than a conventional, storage water heater. Tankless water heaters also have easily replaceable parts that can extend their lifespan even more. (Scheduling routine maintenance calls with a licensed plumber can also help keep the unit in good working order.)
If your tankless water heater has a leak, however, it may not be able to be repaired. In this case, your best bet is to call a licensed plumber right away to minimize any water damage that may have occurred to your home.
If your tankless water heater is already nearly 20 years old, you may also want to replace the unit with a newer model instead of continuing to pay for repairs and replacement parts.
"My tankless heater is not heating, who should I call?"
If your tankless water heater isn’t heating up properly, it’s a good idea to call a licensed professional, such as a plumber, who can diagnose the problem and repair the unit, if possible. Repairing a water heater usually isn’t a DIY job.
"How much does it cost to install a tankless water heater?"
It costs about $2,163 to install a tankless water heater, according to HomeAdvisor.com. A tankless water heater unit costs an average of about $1,750, whereas the labor costs will likely run between $100 to $450. Gas tankless water heater units tend to be more expensive than electric models.
"I need a new water heater, should I get a tankless heater?"
The right water heater for your home may depend, in part, on how large your household is, how much hot water you use at one time, and the cost of installation.
In general, tankless water heaters are two to three times more expensive than conventional storage water heaters. However, because they heat water “on demand,” rather than continually heating a supply of water that sits in a tank, they’re more energy efficient — and environmentally friendly — than storage water heaters. This, in turn, can also save you money on energy bills.
Tankless water heaters also last about 5 to 10 years longer than storage water heaters, which could also save you money in the long-run. However, the upfront cost of a tankless water heater can be expensive, and some households may not see any savings on their energy bills for years.
Larger households, or ones that use a lot of hot water simultaneously may also prefer a storage water heater, which can likely supply more gallons of hot water at once.