Hot Water Heaters | Boilers

Water heaters and boilers are residential and commercial appliances that provide a continuous supply of hot water throughout a building for conditioning or washing. The variation in names and functions of hot water heaters is attributed to their capacity to heat drinking water, usage in the a range of purposes in the domestic or industrial sphere, and their respective energy sources. Fossil fuels are commonly used for heating water, but alternative energy, backed with fossil fuels or electricity, can also be implemented instead. Electric heat pump hot water heaters are another more efficient, but more expensive, option. Hot water for the purposes of space heating is heated in a boiler.

What size water heater do I need?

Determining what size water heater is needed requires figuring out the amount of water one uses during the busiest hour, or the time of day when the most hot water usage occurs. For a general estimate, a household of 1 to 2 people requires 30-40 gallons (114-151 liters). A household of 2 to 3 people calls for 40-50 gallons (151-189 liters) and 50-60 gallons (189-227 liters) for 3 to 4 people.

How long do water heaters last?

The general lifespan of a water heater ranges from 8 to 12 years. The exact life expectancy is dependent on the quality of water and installation as well as the overall design of the unit. A water heater headed towards 10 years is typically due for a replacement.

How do you install a water heater?

For a gas water heater, disconnect the gas and water lines and detach the gas exhaust. Then, set the water heater in position. Install both the heat valves and water line connections. The last step is to attach the gas line. For an electric water heater, move it into a drain pan and install both the T&P valve and discharge pipe. After, attach the hoses and fill up the water heater by removing the aerator and turning on the water supply. Connect any wiring and check that the tank is full by turning on the faucet.

* Under Development *

Hot Water Heaters

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46.25” | 117.5 cm
19.75” | 50.2 cm
19.75” | 50.2 cm
112 lb | 50.8 kg
Rheem Atmospheric Gas Water Heater - 30 Gal
117.500
50.200
50.200
50.800
2000
https://p3d.in/e/opSaY
3D
Rheem Atmospheric Gas Water Heater - 30 GalPerspective view of a 3D model of the Rheem Performance Atmospheric Gas Water Heater (30 Gallon)Perspective view of a 3D model of the Rheem Performance Atmospheric Gas Water Heater (30 Gallon)
18.25” | 46.4 cm
17.625” | 44.8 cm
3.5” | 8.9 cm
17.8 lb | 8.1 kg
Rheem Classic Tankless Electric Water Heater - 6.6 GPM
46.400
44.800
8.900
8.100
350
https://p3d.in/e/llduN
3D
Rheem Classic Tankless Electric Water Heater - 6.6 GPM3D model of the Rheem Professional Classic Tankless Electric Water Heater - 6.6 GPM viewed in perspective3D model of the Rheem Professional Classic Tankless Electric Water Heater - 6.6 GPM viewed in perspective
49.5” | 125.7 cm
21.625” | 54.9 cm
21.625” | 54.9 cm
75 lb | 34 kg
Rheem Electric Water Heater - 30 Gal
125.700
54.900
54.900
34.000
3100
https://p3d.in/e/rOnNm
3D
Rheem Electric Water Heater - 30 GalPerspective view of a 3D model of the Rheem Marathon Electric Water Heater (30 Gallon)Perspective view of a 3D model of the Rheem Marathon Electric Water Heater (30 Gallon)
47.25” | 120 cm
28.25” | 71.8 cm
28.25” | 71.8 cm
95 lb | 43.1 kg
Rheem Electric Water Heater - 50 Gal
120.000
71.800
71.800
43.100
3100
https://p3d.in/e/f13MO
3D
Rheem Electric Water Heater - 50 GalView of the Rheem Marathon Electric Water Heater (50 Gallon) in 3D available for downloadView of the Rheem Marathon Electric Water Heater (50 Gallon) in 3D available for download
70.25” | 178.4 cm
28.25” | 71.8 cm
28.25” | 71.8 cm
134 lb | 60.8 kg
Rheem Electric Water Heater - 85 Gal
178.400
71.800
71.800
60.800
3100
https://p3d.in/e/Q8SSl
3D
Rheem Electric Water Heater - 85 Gal3D model of the Rheem Marathon Electric Water Heater (85 Gallon) viewed in perspective3D model of the Rheem Marathon Electric Water Heater (85 Gallon) viewed in perspective
60.25” | 153 cm
26.25” | 66.7 cm
26.25” | 66.7 cm
320 lb | 145.1 kg
Rheem High Demand Gas Water Heater - 75 Gal
153.000
66.800
66.800
145.100
2000
https://p3d.in/e/nsuRC
3D
Rheem High Demand Gas Water Heater - 75 Gal3D model of the Rheem Performance High Demand Gas Water Heater (75 Gallon) viewed in perspective3D model of the Rheem Performance High Demand Gas Water Heater (75 Gallon) viewed in perspective
64” | 162.6 cm
27.25” | 69.2 cm
27.25” | 69.2 cm
350 lb | 158.8 kg
Rheem High Demand Gas Water Heater - 98 Gal
162.600
69.200
69.200
158.800
2000
https://p3d.in/e/bWWee
3D
Rheem High Demand Gas Water Heater - 98 GalPerspective view of a 3D model of the Rheem Performance High Demand Gas Water Heater (98 Gallon)Perspective view of a 3D model of the Rheem Performance High Demand Gas Water Heater (98 Gallon)
27.5” | 69.9 cm
18.5” | 47 cm
9.75” | 24.8 cm
82 lb | 37.2 kg
Rheem High Efficiency Tankless Gas Water Heater - 9.5 GPM
69.900
47.000
24.800
37.200
500
https://p3d.in/e/6b5Nw
3D
Rheem High Efficiency Tankless Gas Water Heater - 9.5 GPMView of the Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) in 3D available for downloadView of the Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) in 3D available for download
61” | 154.9 cm
22.25” | 56.5 cm
22.25” | 56.5 cm
218 lb | 98.9 kg
Rheem Hybrid Water Heater - 50 Gal
154.900
56.500
56.500
98.900
2800
https://p3d.in/e/PwSSq
3D
Rheem Hybrid Water Heater - 50 GalView of the Rheem Professional Prestige Hybrid Water Heater (50 Gallon) in 3D available for downloadView of the Rheem Professional Prestige Hybrid Water Heater (50 Gallon) in 3D available for download
64” | 162.6 cm
24.25” | 61.6 cm
24.25” | 61.6 cm
262 lb | 118.8 kg
Rheem Hybrid Water Heater - 65 Gal
162.600
61.600
61.600
118.800
2800
https://p3d.in/e/i9FW8
3D
Rheem Hybrid Water Heater - 65 Gal3D model of the Rheem Professional Prestige Hybrid Water Heater (65 Gallon) viewed in perspective3D model of the Rheem Professional Prestige Hybrid Water Heater (65 Gallon) viewed in perspective
74” | 188 cm
24.25” | 61.6 cm
24.25” | 61.6 cm
281 lb | 127.5 kg
Rheem Hybrid Water Heater - 80 Gal
188.000
61.600
61.600
127.500
2800
https://p3d.in/e/MY5Tf
3D
Rheem Hybrid Water Heater - 80 GalPerspective view of a 3D model of the Rheem Professional Prestige Hybrid Water Heater (80 Gallon)Perspective view of a 3D model of the Rheem Professional Prestige Hybrid Water Heater (80 Gallon)
50.5” | 128.3 cm
23.75” | 60.3 cm
23.75” | 60.3 cm
160 lb | 72.6 kg
Rheem Platinum Gas Water Heater - 50 Gal
128.300
60.300
60.300
72.600
2000
https://p3d.in/e/bAOus
3D
Rheem Platinum Gas Water Heater - 50 GalView of the Rheem Performance Platinum Gas Water Heater (50 Gallon) in 3D available for downloadView of the Rheem Performance Platinum Gas Water Heater (50 Gallon) in 3D available for download
30.5” | 77.5 cm
23.5” | 59.7 cm
23.5” | 59.7 cm
61 lb | 27.7 kg
Rheem Point-of-Use Electric Water Heater - 20 Gal
77.500
59.700
59.700
27.700
3100
https://p3d.in/e/M56bM
3D
Rheem Point-of-Use Electric Water Heater - 20 Gal3D model of the Rheem Marathon Point-of-Use Electric Water Heater (20 Gallon) viewed in perspective3D model of the Rheem Marathon Point-of-Use Electric Water Heater (20 Gallon) viewed in perspective
18.25” | 46.4 cm
21.625” | 54.9 cm
3.5” | 8.9 cm
22.7 lb | 10.3 kg
Rheem Tankless Electric Water Heater - 8.8 GPM
46.400
54.900
8.900
10.300
350
https://p3d.in/e/ouZH5
3D
Rheem Tankless Electric Water Heater - 8.8 GPMPerspective view of a 3D model of the Rheem Performance Tankless Electric Water Heater - 8.8 GPMPerspective view of a 3D model of the Rheem Performance Tankless Electric Water Heater - 8.8 GPM
25.625” | 65.1 cm
13.875” | 35.2 cm
9.875” | 25.1 cm
54 lb | 24.5 kg
Rheem Tankless Gas Water Heater - 8.4 GPM
65.100
35.200
25.100
24.500
500
https://p3d.in/e/Rsh3v
3D
Rheem Tankless Gas Water Heater - 8.4 GPM3D model of the Rheem Mid Efficiency Tankless Gas Water Heater (8.4 GPM) viewed in perspective3D model of the Rheem Mid Efficiency Tankless Gas Water Heater (8.4 GPM) viewed in perspective
36.75” | 93.3 cm
13.875” | 35.2 cm
9.875” | 25.1 cm
80 lb | 36.3 kg
Rheem Tankless Gas Water Heater - 9.5 GPM
93.300
35.200
25.100
36.300
500
https://p3d.in/e/2bx3A
3D
Rheem Tankless Gas Water Heater - 9.5 GPMView of the Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) in 3D available for downloadView of the Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) in 3D available for download
Rheem Marathon Electric Water Heater - 30 Gallon

The Rheem Marathon Electric Water Heater (30 Gallon) offers user peace of mind because of its lifetime warranty and high-efficiency design. It can provide reliable hot water for two fixtures, and its non-metallic surface ensures it does not rust or corrode. The polyurethane insulation ensures low energy consumption, and the several layers of filament wound fiberglass ensure the tank last longer.

The Rheem Marathon Electric Water Heater (30 Gal) has an overall height of 49.5” (125.7 cm) and diameter of 21.625” (54.9 cm). The Rheem Marathon Electric Water Heater (30 Gal) weighs 75 lb (34 kg) and has a tank capacity of 30 gal (114 L).

Set of dimensioned drawings of the Rheem Marathon Electric Water Heater (30 Gal) measured with height and diameter
The Rheem Marathon Electric Water Heater (30 Gallon) offers user peace of mind because of its lifetime warranty and high-efficiency design. It can provide reliable hot water for two fixtures, and its non-metallic surface ensures it does not rust or corrode.

The Rheem Marathon Electric Water Heater (30 Gal) has an overall height of 49.5” (125.7 cm) and diameter of 21.625” (54.9 cm). The Rheem Marathon Electric Water Heater (30 Gal) weighs 75 lb (34 kg) and has a tank capacity of 30 gal (114 L).

Set of dimensioned drawings of the Rheem Marathon Electric Water Heater (30 Gal) measured with height and diameter
Rheem Marathon Electric Water Heater - 30 Gallon
Height:
49.5” | 125.7 cm
Width:
21.625” | 54.9 cm
Length:
Depth:
21.625” | 54.9 cm
Weight:
75 lb | 34 kg
Area:

Tank Capacity: 30 gal | 114 L

UEF: .88

Type
Electric Tank Water Heater
Designer
Rheem

Drawings include:
Rheem Marathon Electric Water Heater (30 Gallon) front elevation, side, plan

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Rheem Professional Prestige Hybrid Water Heater - 50 Gallon

The Rheem Professional Prestige Hybrid Water Heater (50 Gallon) has features similar to the 65 gallons and 80 gallons but has a low profile, which makes it easily accessible and spots a top-mounted washable air filter. The heater is the smartest, quietest, and is safe for the environment as it emits fewer greenhouse gases. The EcoNet Wi-Fi-connected technology and Rheem EcoNet mobile app give users control over the water heater system, allowing homeowners to customize various settings and even receive alerts via messages.

The Rheem Professional Prestige Hybrid Water Heater (50 Gal) has an overall height of 61” (154.9 cm) and diameter of 22.25” (56.5 cm). The Rheem Professional Prestige Hybrid Water Heater (50 Gal) weighs 218 lb (98.9 kg) and has a tank capacity of 50 gal (189 L).

Collection of elevation and plan drawings of the Rheem Professional Prestige Hybrid Water Heater (50 Gallon) with dimensions
The Rheem Professional Prestige Hybrid Water Heater (50 Gallon) has features similar to the 65 gallons and 80 gallons but has a low profile, which makes it easily accessible and spots a top-mounted washable air filter. The heater is the smartest, quietest, and is safer for the environment.

The Rheem Professional Prestige Hybrid Water Heater (50 Gal) has an overall height of 61” (154.9 cm) and diameter of 22.25” (56.5 cm). The Rheem Professional Prestige Hybrid Water Heater (50 Gal) weighs 218 lb (98.9 kg) and has a tank capacity of 50 gal (189 L).

Collection of elevation and plan drawings of the Rheem Professional Prestige Hybrid Water Heater (50 Gallon) with dimensions
Rheem Professional Prestige Hybrid Water Heater - 50 Gallon
Height:
61” | 154.9 cm
Width:
22.25” | 56.5 cm
Length:
Depth:
22.25” | 56.5 cm
Weight:
218 lb | 98.9 kg
Area:

Tank Capacity: 50 gal | 189 L

UEF: 3.55

Type
Hybrid Tank Water Heater
Designer
Rheem

Drawings include:
Rheem Professional Prestige Hybrid Water Heater (50 Gallon) front elevation, plan

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Rheem Professional Prestige High Efficiency Tankless Gas Water Heater - 9.5 GPM

The Rheem Professional Prestige High-Efficiency Tankless Gas Water Heater (9.5 GPM) boasts having the industry-leading low water flow activation flow rate and a hot start programming feature that minimizes cold bursts of water. Natural gas is used to power the water heater and there is an option to link tank units to operate as one in high demand applications. It also features a self-diagnostic system that encourages easy installation and service.

The Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) has an overall height of 27.5” (69.9 cm), width of 18.5” (47 cm), and depth of 9.75” (24.8 cm). The Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) weighs 82 lb (37.2 kg) and has a maximum flow rate of 9.5 gallons per minute.

Dimensioned drawings of the Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) in multiple views
The Rheem Professional Prestige High-Efficiency Tankless Gas Water Heater (9.5 GPM) boasts having the industry-leading low water flow activation flow rate and a hot start programming feature that minimizes cold bursts of water. Natural gas is used to power the water heater.

The Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) has an overall height of 27.5” (69.9 cm), width of 18.5” (47 cm), and depth of 9.75” (24.8 cm). The Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) weighs 82 lb (37.2 kg) and has a maximum flow rate of 9.5 gallons per minute.

Dimensioned drawings of the Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) in multiple views
Rheem Professional Prestige High Efficiency Tankless Gas Water Heater - 9.5 GPM
Height:
27.5” | 69.9 cm
Width:
18.5” | 47 cm
Length:
Depth:
9.75” | 24.8 cm
Weight:
82 lb | 37.2 kg
Area:

Max GPM: 9.5

UEF: .93

Type
Tankless Gas Water Heater
Designer
Rheem

Drawings include:
Rheem Professional Prestige High Efficiency Tankless Gas Water Heater (9.5 GPM) front elevation, side, plan

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Rheem Mid Efficiency Tankless Gas Water Heater - 9.5 GPM

The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) is an indoor-only installation tankless water heater with a minimum activation flow rate feature that ensures users receive hot water even when the demand situation is low. The tank uses natural gas as fuel, can be connected to four showers and has a freeze protection feature that ensures the water temperature does not go below -30 °F.

The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) has an overall height of 36.75” (93.3 cm), width of 13.875” (35.2 cm), and depth of 9.875” (25.1 cm). The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) weighs 80 lb (36.3 kg) and has a maximum flow rate of 9.5 gallons per minute.

Collection of elevation and plan drawings of the Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) with dimensions
The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) is an indoor-only installation tankless water heater with a minimum activation flow rate feature that ensures users receive hot water even when the demand situation is low. The tank uses natural gas as fuel, can be connected to 4 showers.

The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) has an overall height of 36.75” (93.3 cm), width of 13.875” (35.2 cm), and depth of 9.875” (25.1 cm). The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) weighs 80 lb (36.3 kg) and has a maximum flow rate of 9.5 gallons per minute.

Collection of elevation and plan drawings of the Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) with dimensions
Rheem Mid Efficiency Tankless Gas Water Heater - 9.5 GPM
Height:
36.75” | 93.3 cm
Width:
13.875” | 35.2 cm
Length:
Depth:
9.875” | 25.1 cm
Weight:
80 lb | 36.3 kg
Area:

Max GPM: 9.5

UEF: .82

Type
Tankless Gas Water Heater
Designer
Rheem

Drawings include:
Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) front elevation, side, plan

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Rheem Performance Tankless Electric Water Heater - 8.8 GPM

The Rheem Performance Tankless Electric Water Heater (8.8 GPM) is mainly for residential use either in the whole house or point-to-point use for a sink, dishwasher, shower, and bathtub. Because of their small size, low cost, and maintenance, they can be installed under a sink or cabinets, on the wall, or in confined places with the bottom part of the tank being the water connection point.

The Rheem Performance Tankless Electric Water Heater (8.8 GPM) has an overall height of 18.25” (46.4 cm), width of 21.625” (54.9 cm), and depth of 3.5” (8.9 cm). The Rheem Performance Tankless Electric Water Heater (8.8 GPM) weighs 22.7 lb (10.3 kg) and has a maximum flow rate of 8.8 gallons per minute.

Set of dimensioned plan and elevation drawings of the Rheem Performance Tankless Electric Water Heater (8.8 GPM)
The Rheem Performance Tankless Electric Water Heater (8.8 GPM) is mainly for residential use either in the whole house or point-to-point use. Because of their small size, low cost, and maintenance, they can be installed under a sink or cabinets, on the wall, or in confined places.

The Rheem Performance Tankless Electric Water Heater (8.8 GPM) has an overall height of 18.25” (46.4 cm), width of 21.625” (54.9 cm), and depth of 3.5” (8.9 cm). The Rheem Performance Tankless Electric Water Heater (8.8 GPM) weighs 22.7 lb (10.3 kg) and has a maximum flow rate of 8.8 gallons per minute.

Set of dimensioned plan and elevation drawings of the Rheem Performance Tankless Electric Water Heater (8.8 GPM)
Rheem Performance Tankless Electric Water Heater - 8.8 GPM
Height:
18.25” | 46.4 cm
Width:
21.625” | 54.9 cm
Length:
Depth:
3.5” | 8.9 cm
Weight:
22.7 lb | 10.3 kg
Area:

Max GPM: 8.8

EF: .99

Type
Tankless Electric Water Heater
Designer
Rheem

Drawings include:
Rheem Performance Tankless Electric Water Heater (8.8 GPM) front elevation, side, plan

Details & Downloads

Downloads

2D Downloads

Right Click and 'Save As' to Download

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