Tankless water heaters are rated by the maximum temperature rise possible at a given flow rate. Therefore, to size a demand water heater, you need to determine the flow rate and the temperature rise you'll need for its application (whole house or a remote application, such as just a bathroom) in your home. It is important to note that you should never try and save money by undersizing your tankless water heater. Click Here to read more about how to size the right tankless water heater for your home. Other features you will need to consider are:
  • Electric vs Gas Models: Gas models are more powerful and energy efficient than their electric counterparts. Electric models are better for smaller applications or in instances where your home cannot accept Gas or where you cannot properly vent the Gas model. Click here to read more about tankless water heater installation.
  • Whole House vs Point of Use: Do you need a tankless water heater for a single application or for a summer home? You will want to consider a point of use model that are great for sinks or showers in warm climates. You will want to consider a whole house model if you want to heat water for your entire home.
  • Sizing Requirements: The most important purchasing you decision you make will be buying the right sized unit for your application. Do you need to heat one shower? Two shower? Three showers? Read more about sizing tankless water heaters and installation information.
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