Most tankless water heaters operate off a 1 2 inch or 3 4 inch gas line.
Tankless water heaters problems.
Water is not hot enough.
Hard water leading to mineral build up corrosion excessive demand and improper installation can all cause problems with on demand water heaters.
Common tankless water heater problems hot water is not delivered instantly and other common tankless water heater problems are listed below.
Undersized gas lines can place stress on the water heater reduce its expected lifespan and even be a warranty violation for some manufacturers.
While a tankless hot water heater can supply one shower with endless hot water the capacity is usually limited to just one faucet.
Mineral buildup whether you use a traditional or a tankless water heater you need to keep an eye out for mineral buildup inside your water heater.
Which is required will depend on what can provide a sufficient level of fuel to the water heater.
Here are six of the most common problems and maintenance concerns for tankless water heaters mineral buildupsystem overloadcold water sandwichair supply or exhaust blockageignition failureflame failurekeep reading to learn what signs to look for when identifying these issues and how to fix them problem 1.
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You see every tankless water heater has a minimum flow rate which is the minimum amount of water measured in gallons that the tankless unit needs flowing through it every minute gpm to produce hot water.
If your tankless water heater is delivering water that s too hot or too cold there s a number of issues that could cause this problem.
The burner is too noisy.
If you have an older tankless water heater 10 years old the problem is most likely that the minimum flow rate is too high.
Here are the best ways to address these issues.
If this is the case adjust the maximum temperature between 125 and 130 degrees fahrenheit.
Consumer reports magazine warns that on demand water heater maintenance can be expensive.
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Burner does not ignite.
Hybrid tankless water heaters.
A high quality tankless water heater should last 20 years but it must be properly maintained.