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This size of water heater is only used by electric water heaters. Prior to 2015 you used to be able to find conventional electric water heaters of this size. According to an addition to the National Appliance Energy Conservation Act (NAECA III) there are now energy standards in effect for all water heaters manufactured for sale in the United States. They require that any 80 gallon electric tank manufactured for domestic use be a hybrid heat pump water heater. See this page for more information about hybrid heat pump water heaters. Keep in mind that heat pump water heaters have different modes of operation, some are very efficient while others prioritize producing hot water faster. If the heat pump water heater is operating in a more efficient mode it will have a slower recovery rate. For this reason 80 gallon hybrid heat pump water heaters typically have a first hour rating in the 90 gallon range.

Upsizing or Downsizing

Many times when someone finds out what size water heater they have they think about upsizing or downsizing their water heater. If you are thinking about downsizing your water heater, keep in mind that this is not always possible. Plumbing code requires that you keep at least a minimum first hour rating on the water heater that is in your home. The minimum rating on your water heater is determined by the number of bathrooms and bedrooms in your home. You can reference the chart below to see what the minimum for your home.

Water Heater 1st Hour Rating

Sometimes people also want to be able to get more hot water out of their water heater. To accomplish this, they want to upsize their water heater. If your previous water heater met the code requirements there isn’t usually an issue with upsizing your water heater from a code perspective. However, you may still run into some difficulties upsizing your water heater. The first consideration is space. Water heaters with more water in them are typically wider than your current heater. Do you have room for this? Secondly, when you are upsizing your water heater, it will typically have a larger BTU (British Thermal Units) rating on the water heater. The larger BTU rating may require a larger vent. Re-doing your venting can be an expensive proposition, check with your installation coordinator to see if this will be necessary.


If you have questions about 80 Gallon water heaters, need service/repair/installation, please do not hesitate to contact us!