Commercial Heat Pump
The Vaughn Heat Pump Water Heater combines the proven longevity of a HydraStone lining and steel construction with Vaughn's efficient heat pump technology. With three inches of high-quality, CFC-free foam insulation, the Vaughn Heat Pump Water Heater has the lowest standby heat-loss rating in the industry. A streamlined user interface on the controller ensures ease of use and is highly versatile, including a customizable temperature differential, temporary mode overrides, and child lock protection. A high level of efficiency ensures a fast payback period, and the long life of the Vaughn HydraStone lined tank ensures additional long-term savings. Suitable for even the coldest of climates.
The Energy Star Rated MK II Electric Heat Pump Water Heater
Featuring all the same affordable, low-maintenance, and durability features as our heat pump water heater, Vaughn is now offering the MK II Electric Heat Pump Water Heater, with Energy Star 5.0 ratings. The Energy Star 5.0 certification opens up opportunities for tax write-offs and incentives in many states, ensuring a worthy investment.
- Simple Operation - Fully integrated water heater easily replaces a standard electric water heater
- User-friendly electronic controller simplifies operation, maintenance, and troubleshooting
- Low maintenance design - Designed for simple installation and service by a professional plumber
- HydraStone lining ensures long tank life
- Proven heat pump technology - Incoloy sheathed backup electric elements resist corrosion and mineral build-up
- Heavy Duty Construction - Thick gauge carbon steel storage vessel with 1/2" seamless HydraStone lining
- Insulated with 3" of CFC-free polyurethane foam insulation to minimize heat loss
- No Sacrificial Anode Rod - Reduces operation expenses by eliminating periodic inspection and replacement costs associated with maintaining an anode rod
- Warranty 10-year limited tank warranty
Additional Product Details
How the Vaughn Heat Pump Water Heater Works
The Vaughn Heat Pump Water Heater uses a small amount of electricity to transfer heat to the water from the surrounding air. In comparison, traditional electric water heaters use resistive heating elements to directly heat the water. The Vaughn Heat Pump Water Heater is significantly more energy efficient when compared to a conventional electric water heater because the heat pump utilizes considerably less electricity than a standard electric unit. In essence, a heat pump works like a refrigerator in reverse. A refrigerator moves heat from inside the refrigerator (making things cold) and transfers that heat energy to the surrounding room, whereas a heat pump water heater captures free and essentially unlimited heat from the ambient air and transfers that heat to the water stored in the tank. The Vaughn Heat Pump Water Heater can capture heat from air as cool as 40°F. If the unit cannot provide enough heating capacity to meet the demand, the backup resistive heating elements will activate to ensure the unit provides sufficient hot water. The process of removing heat from the air and transferring it to the water results in the exhaust of cooler dryer air. This added benefit of dehumidifying the surrounding air can provide as much as 0.4 gallons per hour of "free" dehumidification provided by the heat pump unit is heating water.
Heat Pump Functions
- The built-in fan draws room air into the water heater heat pump compartment and across an evaporator coil, and exhausts cooler and slightly dryer (dehumidified) air.
- The evaporator coil captures heat energy in the air and transfers that energy to a specially formulated CFC-free refrigerant contained within the evaporator.
- The refrigerant changes from a liquid to a gas as it gets warmer.
- The refrigerant, now as a warm gas, exits the evaporator and passes into a compressor.
- The warm gas is compressed, causing it to become a superheated hot gas and then flows to the heat exchanger.
- The heat exchanger transfers heat energy from the superheated hot gas to the cold water from the tank.
- The pump circulates cold water from the tank through the heat exchanger resulting in a continuous transfer of heat energy from the superheated gas to the water.
- Hot water exits the heat exchanger and is stored in the tank.
- The superheated gas condenses back to a liquid and awaits to repeat the process.
Selectable Operating Modes
- Economy: This mode controls the heater such that the heat pump provides essentially all of the heating capacity. This is typically the lowest operating cost mode.
- Hybrid: This mode controls the heater in a way to optimize its efficiency and user experience and is the default setting. This mode operates the water heater such that the heat pump provides the vast majority of heating capacity and automatically switches to electric resistance heater mode only when necessary to meet high demand or to optimize efficiency.
- Electric: This mode controls the heater such that it only heats using the electric resistance heaters and operates as a traditional electric water heater. The heat pump will not operate in this mode.
- Super: This mode controls the heater such that both the heat pump and the electric resistance elements can operate simultaneously. This mode provides the fastest recovery option possible by providing heating capacity from both the heat pump and the electric resistance heaters at the same time.
- Vacation: This mode prevents the heater from heating (regardless of what mode it is in) as a way to improve efficiency during long periods of no usage (i.e. vacation). In this mode, the only time the heater will heat is if the unit is in danger of freezing. The user sets the number of days to be in vacation mode (adjustable from 2 to 99 days or Off), and the unit resumes its previous mode of operation at the end of this period.
- Max Heat: Simply pressing one button maximizes heating capacity by temporarily putting the heater into super mode.
- Fan Off: Simply pressing one button temporarily lowers the fan speed which reduces the airflow and minimizes operating noise. Pressing the button twice turns the fan off for a user adjustable time period.
|Storage Capacity (Gallons)||Part Number||Dimensions (Inches)||Shipping Weight (lbs.)|
|Overall Diameter||Overall Height||Floor to T&P and HW Outlet||Floor to CW Inlet|
Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested according to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC Code and all state energy efficiency performance criteria for energy consuming appliances.
- Installed location must be at least a 10' x 10' x 7' room (700 cubic feet of air space). If smaller, there must be a louver installed to provide sufficient airflow.
- Installed room location must not be cooler than 40°F.
- Installed locations with warmer ambient air temperature (i.e. furnace room) provides abundant "free" heat and are advantageous.
- The heat pump dehumidifies the air and as a result, produces condensate which must be piped to drain or outdoors.
- The washable air filter requires periodic cleaning. Frequency depends upon environmental conditions.
Energy Consumption Chart
|Annual Energy Consumption (EST)|
|Coefficient of Performance (COP)||Annual Energy Consumption and Operating Cost in Various Operating Modes|
|kW·Hrs||Operating Cost $||kW·Hrs||Operating Cost $||kW·Hrs||Operating Cost $||kW·Hrs||Operating Cost $|
Note: Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH.
- 1 1/2" Male NPT inlet and outlet water connections
- Tank installed heat exchanger for use with solar or radiant heating systems (3/4" or 1" diameter)
- Alternate voltages (1 or 3 phase), alternate wattages or 50 Hz available