DOUBLEMAX 50-4 - Instantaneous Indirect Double-Wall Water Heater

DoubleMax® Indirect Water Heater – Unmatched Safety & Instant Hot Water Performance

High-Performance, Energy-Efficient, and Maintenance-Free

The DoubleMax® indirect water heater from Thermo 2000 sets a new standard in domestic hot water systems by combining instantaneous water heating, superior energy transfer, and maximum safety. Featuring a patented double-wall copper heat exchanger, the system offers unmatched protection against cross-contamination while delivering energy savings of up to 30%.

🔒 Maximum Safety – Double-Wall Copper Heat Exchanger

Unlike conventional water heaters, DoubleMax® is built with an innovative double-wall copper heat exchanger that virtually eliminates the risk of contamination between the potable water and the heat transfer liquid—often classified as toxic. The system includes vented leak ports for fast detection of any potential issues, providing 360° visual safety and simplifying preventative maintenance.

🚿 Instantaneous Domestic Hot Water On Demand

With no storage of stagnant water, the DoubleMax® instantly delivers domestic hot water from 40°F to 140°F in under 7 seconds. Water is heated only when needed, eliminating standby losses and reducing energy usage significantly.

Key Benefits:

• Instant hot water production

• Prevents Legionella and bacteria buildup

• No need for a storage tank

• Rapid temperature rise (100°F in <7 seconds)

🔄 Three-Stage Thermal Transfer for Maximum Efficiency

1. Potable Water Counterflow
   Cold potable water flows from bottom to top through copper coils submerged in heat transfer liquid, capturing thermal energy without ever touching the fluid—ensuring sanitary and safe water delivery.

2. Heat Transfer Liquid Flow
   The heat transfer fluid enters from the top, swirling around the copper coils via a patented injector that maximizes convection and thermal turbulence, increasing heat transfer efficiency.

3. Energy Source Recycle
   After heat exchange, the cooled transfer fluid is directed back to the energy source (gas, oil, electric, wood, or solar) to be reheated, keeping the loop efficient and closed.

🔧 Multifunctional Design – More Than Just a Water Heater

With its extra connection ports, DoubleMax® can serve as:

• A buffer tank to reduce boiler cycling

• A hydraulic separator for improved flow management

• An energy transfer station compatible with any heating source

🌱 Superior Energy Transfer with Copper – Up to 30% Energy Savings

• Copper conducts heat 17x better than stainless steel.

• Turbulent water flow prevents scale buildup, keeping the system efficient long-term.

• No sacrificial anode, no corrosion, and no maintenance required.

Result:
✔ Lower utility bills
✔ Extended system lifespan
✔ Compact, high-output solution
✔ Energy savings up to 30%

🧪 Hygienic, Residue-Free Water Heating

Unlike traditional storage tanks, DoubleMax® does not accumulate sediment or bacteria. The instant heating process and turbulent flow prevent Legionella proliferation and ensure the water delivered is always fresh, clean, and safe.

🔥 Compatible with All Thermal Energy Sources

DoubleMax® works with virtually any heating system, including:

• Natural gas

• Propane

• Electricity

• Oil-fired systems

• Biomass and wood boilers

• Solar thermal energy

🏆 Engineered for Durability – Backed by Industry-Leading Warranties

• 30+ year lifespan with proper installation

• 15-year residential warranty on reservoir & copper coils

• 10-year commercial warranty on reservoir & copper coils

• 2-year warranty on mechanical parts

• 2” HFC-free polyurethane insulation for maximum heat retention

• Adjustable legs for easy installation

📊 Standard Features & Connections

1. Heating supply

2. Heating return

3. Domestic cold water inlet

4. Domestic hot water outlet

5. Pressure relief valve

6. Temp & pressure indicator

7. Drain valve

8. Immersion well

9. Automatic air vent

10. Adjustable support legs

11. Auxiliary connection ports

12. 2" HFC-free insulation

✅ Why Choose the Thermo 2000 DoubleMax®?

• Instant, on-demand domestic hot water

• Maintenance-free operation

• Safe, double-wall copper technology

• Ultra-efficient energy transfer

• Small footprint, big performance

• Compatible with any heating source

• Proven durability over 45+ years of North American installations

Get the best of both worlds: unmatched safety and exceptional energy performance.
Upgrade to the Thermo 2000 DoubleMax® Indirect Water Heater today.

Warranty: