Whirlpool Gas Water Heaters
Advantages and Features

High efficiency and Energy Star Whirlpool gas water heaters for heating potable water. Explore the most advanced features that improve the efficiency and performance, reduce the energy waste and save money.

There is a decent selection of the Whirlpool gas water heaters, available in capacities from 30 to 60 gallons, designed for families with one to five members and warranties of 6, 9 and 12 years. There are three groups where most of the heaters use natural gas, while only a few use the propane; Standard, Energy Efficient and High Efficiency.

Every gas water heater that comes with the FVIR certified Flame Lock system has a sealed combustion chamber and specially designed flame trap to capture the flammable vapors inside the chamber where they are ignited. After its ignition, the thermal switch shuts down the whole unit as the safety precaution.

Standard series

whirlpool standard gas water heater

Whirlpool water heaters from Standard series can be found in all three sizes and warranties of 6, 9 and 12 years. These units are powered by natural gas or propane and utilize the standard and low NOx burners.

The standard group uses the advanced 6th Sense technology that incorporates the self-powered and commercial-grade Honeywell gas control valve for precise temperature control and diagnostics. The gas control valve is controlled by the microprocessor, resulting in the improved efficiency and performance and easy troubleshooting. If the water heater is not working there will be a certain number of flashes that indicate different problems.

The water temperature setting can be adjusted from 55 F to 155 F (180 F is max. on some models). If the unit is not used for the longer period of time, the vacation setting sets the controller at its minimum temperature.

This system also includes an integrated igniter and thermopile so there is no need for the manual lighting. It uses the heavy-duty aluminum anode rod to protect the tank from corrosion and piezoelectric igniter to light the pilot.

Models with the 9- and 12-year warranties are equipped with the self-cleaning system which uses a specially designed dip tube that creates the turbulent water flow to reduce the sediment build-up inside the water tank. This is what prolongs the tank life and keeps the efficiency high.

Energy Efficient series

whirlpool energy efficiency wh

Whirlpool gas water heaters from the Energy Efficient series are more efficient than the standard type, where the highest energy factor, EF was 0.63 (model 333587, 6-year warranty). The high efficient operation is the result of the special water heater design that incorporates the electronic gas valve and automatic flue damper that are able to reduce the heat loss.

As the standard type, Energy Efficient models are using the intelligent electronic gas valve with the self-diagnostics and electronic ignition. When the water is inactive the automatic pilot re-light system shuts the unit off to reduce the gas consumption and save. The water heaters are eco-friendly as they use the patented low NOx burner for the reduction of the greenhouse gases. This group of heaters has only two models, both with the EF of 0.67.

Model Warranty FHR Recovery
333594 6-year 67 43 40 0.67
333595 12-year 81 50

High Efficiency series

high efficiency whirlpool

Whirlpool gas water heaters from the High-Efficiency series are atmospheric vented models that are equipped with the patented air intake system that creates a pressurized environment, so more heat is transferred to the cold incoming water and less energy is wasted, resulting in high 0.70 energy factor. It is estimated that the energy savings can go up to 25%.

Other differences from the standard type include the LCD digital display which shows the water temperature and error code diagnostics, the electronic hot surface ignition and non-sacrificial powered anode rod, great in any water conditions. Due to the standard connection sizes, it is as easy to install as the conventional type.

Model Warranty FHR Recovery
330876 12-year 70 43 40 0.70
330874 12-year 81 50

Whirlpool gas water heaters are different from electric models and should be chosen carefully. This is why correct installation and maintenance are very important to extend the unit's life, provide safe water heating and reduce the energy costs. Some models are equipped with the connections for use with space heating applications, as the solar storage heater or as the backup for solar water heating systems.

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