Tankless Water Heater Power Requirements

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Tankless water heater power requirements.

For both gas and electric models a tankless water heater s overall energy efficiency is measured using an energy factor ef rating. Our et 32 is the largest electric tankless water heater that we offer at this time. For homes that use 41 gallons or less of hot water daily demand water heaters can be 24 34 more energy efficient than conventional storage tank water heaters. Get tips for resolving issues on your own.

Electric tankless water heaters installation requirements. Another concern is that an electric tankless water heater needs a water flow rate of 5 gallons to 2 gallons per minute to heat water so your faucet has to be turned on high to produce hot water. Many water heaters especially traditional electric ones require changes to your wiring and potentially the breaker box. For example an electric tankless heater that is rated at raising the water temperature 55 degrees at 1 5 gpm will supply you with a 120 degree temperature if the incoming water is 65 f or higher.

Beyond a water heater permit some areas may also require either an electric or plumbing permit depending on the type of water heater. This model in particular is for a whole house application with your standard 4 bedroom 2 bath or larger residences or in radiant heating applications. Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models. This ef rating is based on test procedures developed by the u s.

While tankless water heaters run more efficiently than storage tank water heaters replacing a tank water heater with a tankless can be expensive and the payback time can be longer than the warranty.