Frequently Asked Questions
Ohmic Array Technology
Heatworks products operate silently, providing instant hot water without the use of heating elements. Our technology uses graphite electrodes, electronic controls, and the natural electrical resistance of water to heat water on demand. Through direct energy transfer, water is heated instantly, within (+/-) 1 degree of the temperature setpoint displayed on the outside of a Heatworks product. With no heating elements, the only component that gets hot inside our products is the water itself, resulting in zero plating, scaling, or corroding, a longer lifespan, and no required maintenance.
Other water heaters utilize metal heating elements which fail frequently. Heating elements corrode and rust over time, and must reach temperatures upwards of 800° F in order to heat the water sufficiently. Heating elements boil the water at the point of contact, which causes minerals in the water to plate on them. In addition to corroding and plating, high temperatures also cause heating elements to crack. Heatworks products use graphite electrodes in place of traditional metal heating elements. Our electrodes never get hotter than the water being heated so there is no plating or scaling and they will not corrode over time. This means our products will never require any maintenance and have a significantly longer lifespan.
For the MODEL 3 Water Heater, the conductivity must fall between 80 to 2000 μs of conductivity. The only way to accurately check the conductivity of the water is to use a conductivity meter, which can be purchased online. Your water company should also know the conductivity of the water source.
The electric current used in Heatworks products for heating water poses no risk of electrocution to those using the water coming out of the unit. The water heaters contain several fail safe elements to comply with safety regulations surrounding water and electricity to ensure user safety.
Hard water does not affect the performance of your Heatworks product. Heatworks products use graphite electrodes in place of traditional heating elements. Because these electrodes are made of graphite and never get hotter than the water being heated, they will never plate or corrode. This holds true even if you have harder water in your home, and means the unit will never require any maintenance. If your water comes from a well, we recommend installing a sand filter on the main water line entering the house from the well.
MODEL 3 Water Heater by Heatworks
No. Heatworks products will not function properly with GFCI, GFI, RCB, RCD, or any other ground-fault breakers. Because the water coming out of our products is grounded, there are current characteristics unique to the water heaters that cause these types of breaker to trip when the unit first powers up. We do not recommend using ground-fault breakers with Heatworks products.
No. Heatworks products are designed for use with potable water only. We do not recommend using our products with unapproved chemicals or with water containing chemicals. Please contact Heatworks before using any chemicals with your Heatworks product so not to void your warranty.
No. Unlike other tankless electric water heaters, the heating technology used with the MODEL 3 Water Heater allows us to eliminate a flow switch and flow restrictor, so there is no minimum flow require to begin heating. The MODEL 3 will never heat water higher than the setpoint temperature, regardless of the flow rate.
No. All Heatworks products run on AC power. You can use an inverter (which converts DC power to AC power) in order to run Heatworks water heaters. The inverter needs to be at least as large as the kW of power needed to produce the desired amount of hot water at the desired temperature. The average shower temperature is 105° F.
Heatworks recommends a HVAC contractor install your MODEL 3 unit. Typically, HVAC professionals will have both plumbing and electrical licenses under the same roof and are best equipped for the installation. We recommend a licensed HVAC contractor read the User Guide and Installation Manual prior to installing the unit.
Unfortunately, we cannot provide you with an exact cost of operation, as that number will vary depending on your location and your application. The MODEL 3 is a non-continuous device so it only draws power when there is a need for hot water, and the unit does not continue to draw power once the hot water is turned off. According to the U.S. Energy Information Administration, 14% of the average American household energy costs are devoted to water heating. The MODEL 3 Water Heater is designed to be 99% energy efficient and can reduce the overall cost of water heating by up to 40% compared to a standard tank, so it can reduce the overall energy cost of a home by up to 5.6%.
The MODEL 3 Water Heater produces a maximum water temperature of 130° Fahrenheit. The rise in temperature is dependent on the power setting of the unit. Keep in mind the average shower temperature is 105° F.
For a unit set to 30 amps:
- 3 gallon per minute demand will yield a 16° F rise in temperature.
- 2 gallon per minute demand will yield a 24° F rise in temperature.
- 1.25 gallon per minute demand will yield a 39° F rise in temperature.
For a unit set to 48 amps:
- 3 gallon per minute demand will yield a 26° F rise in temperature.
- 2 gallon per minute demand will yield a 39° F rise in temperature.
- 1.25 gallon per minute demand will yield a 63° F rise in temperature.
For a unit set to 100 amps:
- 3 gallon per minute demand will yield a 54° F rise in temperature.
- 2 gallon per minute demand will yield a 82° F rise in temperature.
- 1.25 gallon per minute demand will yield a 131° F rise in temperature.
No, not at this time. Pool water heaters fall under a different set of UL standards and are tested accordingly. We have not yet tested our products as a pool heaters, however we do plan to put our units through the appropriate UL testing for this application.
No. We have not yet tested our products for specific use on boats. We recommend Heatworks products run off a 240 volt source on shore. Salt water should never be heated with a Heatworks water heater unit.
No, not at this time. We have not yet tested our products with fish tanks.
Tetra Countertop Dishwasher
Tetra will be available for pre-order soon, though an exact date has not been announced. You can sign up for email updates here, and we will send you details as soon as they are available.