Best Double Pipe Heat Exchanger

Rinnai RUS65EP Tankless Hot Water Heater, 6.5 GPM, Propane, Outdoor Installation

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 6.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.

【HIGH THERMAL EFFICIENCY】- Turbulent-flow design moves the two media in opposite directions and creates strong turbulences for superior heat transfer rates and efficiency. Our heat exchanger series have been certificated by CE. Dimension: 7.8" x 3" x 3.7" / 20 cm x 7.8 cm x 9.5 cm..
【ENERGY OPTIMIZED】 - This heat exchanger stainless can heat water to the preset temperature, which is super energy-saving with no electricity consumption and no oxygen consumption..
【ROBUST CONSTRUCTION】- This 30 plate heat exchanger features 316L stainless steel sheets, which are brazed together at the edges and the matrix of contact points for a reliable and rugged part to form a durable, integral piece that can withstand high pressure and temperature. Four thickened MNPT ports for your easier installation..
【COMPACT DESIGN】- Corrugated plate design of this plate chiller wort allows for substantially smaller build and footprint at an equivalent or better performance compared to other heat transfer devices – resulting in significant space savings..
【HIGHLY VERSATILE】-This heat exchanger beer offers the highest level of thermal efficiency and durability in a compact & lightweight unit, ideal for industrial oil cooling, refrigerant evaporators, and conden....

Hot water heater: Heat the whole house with this boiler featuring a self-cleaning stainless-steel heat exchanger with a modulating ceramic burner and a secondary flat plate heat exchanger for showers and faucets.
Smart Features: Multizone control capability allows thermostat and control pumps to connect directly to the boiler of the smart heater that warms the house and the tap water.
User-Friendly Interface: Electric heater features a digital display main screen, a temperature and pressure display, and an outdoor reset sensor with easy parameter settings.
up/down arrows adjust the temperature between 68°F and 185°F.
Space-Saving Design: Compact wall-mounted design of this water heater saves space.
multiple venting options include a 2-inch PVC up to 60 feet and 3-inch up to 150 feet.
Guaranteed to Last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial standard warranty for heat exchanger, parts, and labor respectively.

AGPTEK well male durable Aluminum Heat Exchanger Radiator using integrated forging process.
Applicable to computer CPU,industrial variable frequency drives, VGA water cooling ,laser head cooling, and air conditioning evaporator..
Using the black oxidation paint to increase the thermal efficiency.
Size:main size: 6.22inchx4.72inchx1.18inch(158mm x 120mm x 30mm).

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 6.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 7.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.

Endless Hot Water: Enjoy unlimited hot water flow throughout the house.
Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary.
Optimal Water Pressure: High-performance 6.5 GPM hot water flow rate for a powerful, constant stream.
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation.
Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively.