| To overcome this problem, you can install two or more tankless water heaters, connected in parallel for simultaneous demands of hot water | |
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| Remote bathrooms or hot tubs• Also consider models that have an intermittent ignition device IID instead of a standing pilot light | Do the following when selecting a contractor:• As a result, tankless water heaters deliver a constant supply of hot water |
Typically, tankless water heaters provide hot water at a rate of 2—5 gallons 7.
| Therefore, it's best to have a qualified plumbing and heating contractor install your demand water heater | Periodic water heater maintenance can significantly extend your water heater's life and minimize loss of efficiency |
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| Selecting a Demand Water Heater Before buying a demand water heater, you also need to consider the following:• These factors include fuel type, climate, local building code requirements, and safety issues, especially concerning the combustion of gas-fired water heaters | When a hot water tap is turned on, cold water travels through a pipe into the unit |
Other applications for demand water heaters include the following:• Tankless water heaters, also known as demand-type or instantaneous water heaters, provide hot water only as it is needed.
| In a gas-fired storage water heater, the pilot light heats the water in the tank so the energy isn't wasted | The cost of operating a pilot light in a tankless water heater varies from model to model |
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| Ask the manufacturer how much gas the pilot light uses for the model you're considering | If you're determined to install your water heater yourself, first consult the manufacturer |
See if the company will obtain a local permit if necessary and understands local building codes.