AltSource 50 4.5kW - 24kW - Electric Boiler

AltSource™ – The Ideal Electric Thermal Storage Solution for Renewable Energy Heating Systems

Maximize Efficiency. Minimize Emissions. Complement Any Renewable Heat Source.

The AltSource™ electric thermal mass water heater is the only high-volume electric boiler on the market specifically designed to seamlessly integrate with renewable energy heating systems. Engineered for residential applications, AltSource™ serves as a backup and energy storage system, making it the perfect match for solar thermal systems, geothermal energy, biomass heating, wood-fired boilers, and air-to-water heat pumps.

This innovative combination of an electric boiler and thermal storage tank optimizes system performance by storing surplus energy and delivering on-demand heating, even when renewable output fluctuates.

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🔋 Smart Energy Storage That Acts Like a Thermal Battery

AltSource™ uses high water volume thermal mass to store heat energy when your primary renewable source is running, then releases it when needed—just like a thermal battery.

During periods of low heating demand or low renewable energy production, AltSource™ draws from its stored heat, maximizing system efficiency and lowering utility costs.

Whether you're offsetting energy from a solar heating system or boosting a low-capacity heat pump, AltSource™ ensures consistent warmth and optimized energy usage throughout the home.

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🌡️ Smart Temperature Management with the T2 UltraSmart® Controller

The integrated T2 UltraSmart® smart controller ensures precise modulation of power and temperature, automatically adjusting output based on outdoor conditions and system demand.

With built-in intelligence, AltSource™ provides:

• Backlit digital display and easy-to-use interface
• Pre-set configurations for a wide variety of hydronic systems
• Outdoor temperature sensor to adjust water temperature in real time
• "Boost Mode" for additional power during peak demand
• Auto pump purging during idle periods
• Temperature range: 50°F to 190°F
• Safety controls for temperature limit and low water cut-off
• Thermostat-triggered activation to reduce energy waste
• Standard 24V power supply for thermostats and system accessories

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🌞 Copper Coil Heat Exchanger for Domestic Hot Water (DHW)

Enhance AltSource™ with an ultra-efficient copper coil heat exchanger for domestic hot water production. This allows you to pre-heat or fully heat potable water, delivering even more savings and reducing your home’s reliance on fossil fuels.

Connections include:

• Domestic cold water supply (¾" SWEAT M)
• Domestic hot water output (¾" SWEAT M)

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✅ Features Include

• T2 UltraSmart® Smart Controller
• Boiler Pressure Relief Valve
• Drain Valve
• Heating Water Supply Port
• Heating Water Return Port
• Electrical Panel
• Electric Heating Elements
• Temperature & Pressure Indicator
• Automatic Air Vent

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♻️ Perfect for Sustainable Heating Systems Including

• Biomass boilers
• Geothermal heating
• Wood-fired systems
• Solar thermal panels
• Air-to-water heat pumps

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🔧 Why Homeowners & Installers Choose AltSource™

• The only electric high-volume thermal mass boiler on the residential market
• Ideal for net-zero energy homes and off-grid systems
• Combustion-free and emission-free heating
• Virtually maintenance-free operation
• Reduces dependency on fossil fuels
• Saves on installation costs, space, and energy bills

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Looking to optimize your home’s heating system with renewable energy? The AltSource™ thermal storage boiler is your smartest choice for comfort, sustainability, and savings.

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Warranty

• 5-Year Warranty: Tank and coils
• 2-Year Warranty: Electrical and mechanical components

Technical Documents

• AltSource™ Brochure
• AltSource™ Manual
• AltSource™ Specifications