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Rheem EcoSense Heat Pump Water Heaters
January, 2010
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Key Rheem EcoSense HPWH Features & Benefits
• 50-Gallon model
• 2.0 Energy Factor! - Saves Money
More than twice the efficiency of any standard
electric water heater
• Fast Recovery!
Recovers a full tank of hot water 17% faster
than a 50 gallon standard electric water heater
• Easy installation— it’s a drop-in replacement
for an old electric water heater with standard
connections (side connect)
• Touch Pad Control -Three operating modesfor top energy efficiency, plus temperature control
• 21” width fits thru standard attic/access doors
• ENERGY STAR® rated - Qualifies for federal tax
credits and state/utility rebates and incentives
• 12-Year limited warranty/1-Year in home labor
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Protected LED panel offers
touch control of temperature
and efficiency modes
Touch Pad Control
Choose the Right Efficiency Setting
• ENERGY SAVER: Extracts warmth from the surrounding
air, concentrating the heat, and delivers it to the water.
– 2.0 energy factor (EF)
– First hour delivery like a standard 50 gallon electric model
• NORMAL: Use when hot water demands are very high
– The heat pump and electric element will operate as needed.
– First hour delivery in excess of a standard 65 gallon
electric model
• ELECTRIC HEAT ONLY: Use for temporary operation
– Available to ensure hot water availability without operating
the heat pump
– Reverts back to previous setting (Energy Saver or Normal)
after two weeks, if not manually reset by the user
• TEMPERATURE SETTING
– Temperature range: Hot, Normal, and Vacation
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The Rheem EcoSense Advantage
• Advanced Heat Pump Design
– Field proven technology: Rheem HVAC
engineers have been designing superior
heat pump systems for 30 years
• Advanced Tank and Components
– R-Tech tank protection system
• Exclusive! Resistored anode
extends tank life
• System matching resistored
elements extend element life
…only from Rheem EcoSense
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Built in Protection
• Water Pump Protection
• Freeze Protection
– Sensors turn off HP module if
– Thermistor signals HP module off
there is no circulation – electric
elements enabled
when air temperature is 40oF or
below - electric elements enabled
• Heat Pump Module Component
• Overheat Protection
Protection
– Thermistor signals HP module off
– Sensors monitor HP operation
when air temperature is 120oF or
above - electric elements enabled
and enable electric elements if
improper readings are detected
• Filter Maintenance Protection
• Cold Start Protection
– Thermistor signals HP module off
– Element pre-heat when tank
if air flow is restricted
temperature is below 70oF
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How the Heat Pump Works
In “Energy Saver” mode, this water heater’s high efficiency
heat pump operates automatically for hot water storage in
this sequence:
1.A fan pulls air through the top air filter.
2.Heat in the air is absorbed by eco-friendly refrigerant inside the
evaporator coil and cool (dehumidified) air is exhausted.
3.Refrigerant is pumped through a compressor, which increases the
temperature.
4.Simultaneously the cooler water from the bottom of the tank is
pumped to the top of the appliance, where it circulates through a
patented condenser coil.
5.Hot refrigerant transfers its heat to the water inside the condenser
coil.
6.Heated water is returned back to the top of the tank.
7.All functions are controlled simultaneously by an advanced circuit
board located behind the user touch pad.
8.Condensate drain connection.
9.Backup electric heating elements.
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Super Efficient! Rheem EcoSense HP-50ES
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Installing the Rheem EcoSense
Heat Pump
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Select the Right Installation Site
• Best Home Installation Sites: For optimum performance
in any zone, choose a warm location with unconditioned air
– Attics, garages, basements (approx. 10x10x10 ft. space).
If the location’s temperature stays above 40 degrees, the heat pump
can run year round.
Attic
• Installation Zones: For use in all areas of the U.S.
– Zone 1: Heat pump will be used 90-100% of the year
– Zone 2: Combination heat pump (60%) and electric heating
elements (40%)
– Zone 3: Combination heat pump (50%) and electric heating
elements (50%)
Garage
Zone 3
Zone 2
Basement
Zone 1
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Competitive Matrix: Integrated Heat Pump Water Heater
Rheem EcoSense
GE
Steibel
Energy Factor
2.0
2.35
2.5
Rheem made the design decision to go higher performance overall and a with slightly lower EF. Note: When water heater
performance is higher (more hot water faster), the homeowner is more likely to leave the unit on the Energy Saver (heat pump)
setting permanently, instead of moving to a much lower efficiency mode.
First Hour Rating (FHR)
67 gal
63 gal
78 gal
Tank Capacity vs. Hot Water Delivery (%)
134%
130%
97%
Rheem has the highest heat pump hot water delivery of a 50 gallon product. Note: Rheem standard electric is 67 FHR and the
standard Rheem 80 gallon is 88 FHR.
HP Operating Temp’s
40o-120o
45o-120o
42o-108o
Rheem Heat Pump 40o-120o Range
100%
93%
66%
Rheem’s range of operating temperature means the heat pump can remain on the highest efficiency for the largest
percentage of the year, which means the energy efficient heat pump mode can operate longer in cold weather.
Diameter
21”
22”
26”
Fits through attic/access doors
Yes
No
No
Rheem has the smallest diameter. It can fit most existing installations and through narrow access doors.
Specifications derived from ENERGY STAR® website, manufacturers’ websites and BuildingGreen.com
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10-23-09
Competitive Matrix: Integrated HPWH (continued)
Gallon Capacity
Rheem EcoSense
50 gal
GE
50 gal
Steibel
80 gal
Rheem offers a popular water heater capacity, which is a drop in replacement. It will fit where larger diameter and
larger gallon capacities won’t. Other Rheem capacities will be available in 2010.
Sound
49 dB (Refrigerator)
63 dB (Hair Dryer)
64.2 dB (Hair Dryer)
The Rheem heat pump water heater has whisper quiet operation! (http://www.nwhealth.edu/healthyU/stayHealthy/ear3.html)
Refrigerant
R-410a
R-134a
R-134a
10 Yrs
6 Yrs
R-410a does not contribute to ozone depletion
Warranty
12 Yrs
Rheem offers the highest warranty available for an integrated heat pump water heater.
Product Availability
Available
Limited
Special Order
Asia
Europe
Rheem started shipping in mid September 2009.
Mfg. Location
North America
Rheem’s manufacturing will remain in North America. With Rheem’s strong distribution network, product availability
is excellent… and predictable!
2010 HP Product Intros
Yes!
N/A
N/A
Rheem is continuing to develop the heat pump product line. More products are scheduled for release in 2010.
Specifications derived from ENERGY STAR® website, manufacturers’ websites and BuildingGreen.com 10-23-09
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Support Material
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Specifications
Touch Pad Control
Balancing Energy Efficiency & Performance
Annual Operating Cost Calculations
Heat Transfer Process
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Specifications
• 2.0 EF
• Energy Saver mode:
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67 Gallon FHR and 21 GPH @ 90o rise
Normal mode:
72 Gallon FHR and 23 GPH @ 90o rise
75-1/2” Height
21” diameter (fits through narrow access doors)
User touch pad control
200 lbs.
240V 60hz 22 amps 1 phase
Heat pump operating range: 40o through 120o F
Refrigerant: R-410a
Sound 49 dB (quiet!)
Two – 2 kw Incoloy stainless steel elements
¾” NPT water inlet, outlet, and condensate connection
Top mounted washable filter, snaps on and off,
Built-In component protection
Designed and manufactured in North America
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Energy Saver Mode of Operation
• Energy Saver
– This mode provides the greatest
energy savings
– 2.0 EF
– 67 Gallon First Hour Rating
– 21 Gallons/Hour* – Recovery Rate
The average recovery rate during the recovery of a full
tank of hot water at a 90o temperature rise
– 2 hours & 4 minutes – Recovery Time
Time to recover a full tank of hot water
– Heat pump module operates 45 minutes
to heat water
– IF after 45 minutes the call for heat
continues, electric element is energized
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Normal Mode of Operation
• Normal (High Demand Mode)
– The high demand mode provides 2nd
greatest energy savings and has
increased FHR
– 1.5 EF
– 72 Gallon First Hour Rating
The same FHR as a 65 gallon electric water heater
– 23 Gallons/Hour – Recovery Rate
The average recovery rate during the recovery of a full
tank of hot water at a 90o temperature rise.
– 1 Hour & 59 minutes – Recovery Time
The time it takes to recover a full tank of hot water
– Heat Pump Module operates 30 minutes
to heat water
– IF after 30 minutes the call for heat
continues, electric element is energized
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Electric Heat Only - Temporary Mode
• Electric Heat Only
– No Heat Pump Module usage
– Operates as a standard electric
water heater
– Relies only on two 2 kw Incoloy elements
– Software controls single or dual element
operation
– Reverts back to the previous setting
(Energy Saver or Normal) after
two weeks, unless manually reset by
homeowner
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Balancing Energy Efficiency & Performance
• 2.0 EF
• More than twice the efficiency of standard 50 gal electric water heaters (.90 EF)
• 67 Gallon First Hour Rating
• Matches industry best FHR for standard 50 gal electric water heaters (58-67 gal FHR)
• 23 Gallon/hr Recovery Rate
• Exceeds standard 50 gal electric water heaters by 17% (20.7 GPH)
• 2 Hours & 4 Minute Recovery Period
• Faster than the time it takes for a standard 50 gal electric water heater to recover a full
tank of hot water (2 hrs & 25 minutes)
Note: Some competitors designed their units with a lower energy input (wattage) to achieve additional energy
savings (ex. 2.3 EF vs. 2.0 EF). The slightly higher EF saves the homeowner only $2.69 per month in
operating cost, but significantly decreases hot water delivery performance.
Rheem EcoSense chose to provide the homeowner with substantial energy cost savings plus
more hot water, faster. The Rheem approach helps ensure the homeowner won’t
be tempted to permanently set their heat pump water heater on a less efficient
mode to get enough hot water to meet their needs.
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Annual Operating Cost Calculations
• 40 Gallon Standard Gas Water Heater
– ($12.02*/1000 cubic ft) x (1000 cubic ft/1,028,000 btu) = $.0000116/btu
– (41,045 btu/day/.59 EF) x ($.0000116/btu) x (365 days/year) = $294.55 per year
• 50 Gallon Standard Electric Water Heater
– ($.1065*/kw hr) x (12.03 kw hr/day/.90 EF) x (365 days/year) = $519.60 per year
• 50 Gallon Heat Pump Water Heater
– ($.1065*/kw hr) x (12.03 kw hr/day/2.0 EF) x (365 days/year) = $234.82 per year
* Current D.O.E. national electricity energy cost estimates
Results based on D.O.E. equations for gas and electric water heaters.
Gas and Electric energy factors based on NAECA II minimum levels.
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Heat Transfer Process
• Compact Helical Design with Counter-flow
technology for maximum heat transfer
• Double-wall inner tube provides
isolation of refrigerant from water
• U.L. AND C.S.A. approved for
potable water use
• These coaxial condensers are designed to remove
heat from the refrigerant of heat pump systems
for the purpose of heating potable water
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