How To Choose a Tankless Water Heater
How a Tankless Water Heater Works
- Turn on the hot faucet or start your laundry and the tankless water heater instantly creates hot water.
- The incoming water temperature determines how much heat is needed to reach your desired temperature.
- When you turn off your faucet or the laundry is completed, the tankless water heater shuts off.
Benefits of a Tankless Water Heater
40% Decrease in Utility Costs
Energy Efficient – ENERGY STAR Options
Faster & Unlimited Hot Water
Smaller Than Standard Hot Water Heaters
- Uses an electric power source
- Each tankless water heater has an unique electrical requirement
- Has a lower output and a higher use of electricity
Generally, they can only supply one major application at one time. Consult an electrician before purchasing.Shop Electric Tankless Water Heaters
- Requires a gas line and a supply of either natural gas or propane
- Can supply more hot water and more applications
Gas can be installed indoors or outdoors, but, generally work better indoors in very cold climates.Shop Gas Tankless Water Heaters
Ambient Ground Water Temperature
- Average temperature of your ground water
- Necessary to determine how much your ground temperature must rise to reach the desired hot temperature
You will notice that many tankless hot water heaters list performance data that notes the flow rate, or gallons per minute (GPM), to temperature raise ration. Make sure to know your ambient water temperature so you can choose the correct tankless water heater for ideal water temperature.
Practical Flow Rate
- Determines how the tankless water heater will raise the water’s temperature
- Continuously outputs water, measured in GPM
Condensing vs. Non-condensing
- Recovers more than 85% of the gas than a regular tankless water heater would typically vent out
- The warm exhaust gases transfer to the incoming water preheating it before the primary heat source
These units require a special vent and the condensate created must be handled. The condensing units are typically more expensive and require additional components.
- Units do not make use of the lost heat
- Heat is vented out
These are usually more affordable and tend to use fewer components.