Water Heaters
There are quite a few on demand tankless water heaters manufactured by BOSCH and others. Below is a collection of some of the best around. Available in LP/ Natural gas or electric, they heat only the water you need -saving LOTS of energy and $$$.
...and of course we offer trained professional installation! Call your local USA Solar Store for current pricing and availability.
We also frequently recommend the best Electric Tank Style water heater we could find, The MARATHON by Water Heater Innovations, a Rheem Rudd subsidiary. These are super efficient and guaranteed to never leak! They keep water "perpetually hot" due to their massive (envirofoam) lightweight insulation. With sizes ranging from 30 to 105 gallons (and possible retrofit into Solar Storage tanks) they may be perfect for your needs.
Click on the logos to visit the manufacturer's websites for technical data sheets.
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The BOSCH AquaStar tankless water heater is redefining how homeowners throughout the U.S. heat their water. The BOSCH AquaStar provides endless hot water, saves energy and saves space. This innovative water heater has been featured on Bob Vila's Home Again. |
Our most popular models are from the 125 Series. These tankless water heaters supply one major hot water outlet at a time (Example: One shower running at a time). They are sized for most homes and small businesses and have a 15-year warranty when installed professionally. The 240FX model is the most versatile, efficient tankless water heater available and supplies two hot water outlets at the same time (Example: Two showers running simultaneously). It installs easily indoors or outdoors (in warm climates only). NOTE: Not approved for use in mobile homes, boats, or RVs. |
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The PowerStar electric tankless water heater is designed to replace an electric storage tank heater. Advantages include endless hot water, reduced electricity costs and substantial space savings. 95% Efficiency Rating
Whole house tankless electric water heater |  |
| PowerStar Model AE125 |
Provides 3.7 gallons per minute for water usage at 105°F* - 2 sinks simultaneously or 1 shower or bathtub. Provides 3.0 gallons per minute for water usage at 115°F* - 2 sinks simultaneously or 1 dishwasher. *Assumes 55°F inlet temperature.  | 
NOTE: AE125 is recommended in climates where average annual ground water temperature is less than 60°F. |
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 | Model 38B |
| Compact tankless water heater for low-volume applications. Perfect for camps, cottages and barns. Endless hot water, great energy savings. |
Ideal for cottages, camps, and other
small volume hot water applications |
| Ariston GL Series |
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Designed by the world's leading point-of-use water heater manufacturer, the new Ariston GL series combines good Italian design and state of the art features including glass-lined tanks, a 6- year warranty and highest recovery time. 3 different models to choose from. |
| Glass-lined tank for longer life |
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| Powerstream Models |
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Powerstream instantaneous electric, point-of-use water heaters install at the sink and provide endless hot water while eliminating wasteful cold water runout. 6 different models to choose from.
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99% efficiency rating
copper heat exchanger
backed by a 5 year warranty |
The Marathon electric water heater offers these advantages: 
- Technologically advanced design is clearly differentiated from short lived steel water heaters
- It’s the most durable water heater made, with a warranty to match
- Envirofoam™ insulation is completely free of CFC and HCFC ozone depleting gases. Marathon leads the way in environmental friendly manufacturing, design and operation.
- Tank comes complete with a factory installed vacuum relief valve, 3/4 " brass tee and 3/4 " brass nipple for easy, professional installations
- Replaceable brass drain valve
- All wiring run in conduit for easy control wiring
- Seamless blow molded polybutylene tank with no anode rod required for a corrosion free life
- High temperature, commercial-grade diptubes for greater durability
- The filament wound fiberglass outer tank is designed to be more flexible and withstand more pressure than conventional tanks
- Our unique high temperature dip tube is offset from the concave bottom, creating a "whirlpool effect" which helps prevent sediment build-up
- Every tank includes 4' of pipe insulation for even greater savings
- For complete specifications of all models, Visit the Marathon website
The Marathon product line has expanded with the addition of new Point-of-Use water heaters. Available in 15 and 20-gallon capacity, these new models are built to the same rigorous specifications as the larger models. Designed for use where space is limited, or where a small amount of hot water is needed, these units are perfect for bathrooms away from the main water heating system, or office restrooms, condos or cabins.
The 15 gallon, measuring 21 ½" in diameter and 35 ¾" in height, is configured with a single 120 volt, 2000 watt element. The 20-gallon, with a diameter of 23 ¾" and a height of 34 ½", is available in both 120 and 240 volt and weighs less than 50 pounds.
Like all Marathon heaters, the tanks in these new units carry a lifetime warranty when installed in a private residence. These small heaters have the highest efficiency by size of any storage tank water heater and complement Marathon's current offering of 30, 40, 50, 75, 85 and 105-gallon units.
Solar Storage Tanks
Harvest the Power of the Sun.
Our tanks are equipped with two heat exchangers and feature low standby loss due to 3" insulation.
- Low standby loss due to 3" of foam insulation
- Heavy steel with double glass line coating
- With replaceable sacrificial anode
- Superb quality results in long service life
- Equipped with two heat exchangers with a large surface area
