Brochure

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Only Takagi incorporates true commercial-grade heat exchangers in our tankless
heaters. NOTE: D2 Series, D2U Series, H3 Series and M50 Series non-ASME models.
All aspects of the heat exchanger are designed to add the durability and
reliability that is vital to any successful commercial organization or business.
Commercial-Grade Copper Alloy
Our commercial-grade copper is a heat-resistant copper alloy, with
additive elements that make it much stronger and harder than the
standard C1220 copper used in most other heat exchangers. Our
commercial-grade copper has 8 times the tensile strength of
regular copper. Even at high temperatures, our commercial-grade copper
maintains a fine grain and high strength.
Commercial-grade copper provides
resistance to the damaging effects
of erosion that can cause heat
exchangers to leak.
Drum Thickness
During every ignition cycle, thermal expansion causes all heat
exchangers to undergo heat stress. After the thousands of ON/OFF
cycles typically seen in a commercial application, this heat stress can
prove damaging. This is why the heat exchangers in our commercial
and light commercial products utilize drums that are 25% thicker,
ensuring the longevity of our products. A thicker drum creates less
strain on the heat exchanger.
Commercial-Grade Copper Tubing
water
water
0.016" (0.4mm)
A thicker drum creates less strain on the heat exchanger.
0.020" (0.5mm)
drum coil
drum coil
water
water
drum coil
drum coil
drum
drum
25% Thicker
A thicker drum creates less
strain on the heat exchanger
A thinner drum strains more
under heat stress
Durability
Heat Exchanger with Commercial-Grade Copper
water
water
0.016" (0.4mm)
A thicker drum creates less strain on the heat exchanger.
0.020" (0.5mm)
drum coil
drum coil
water
water
drum coil
drum coil
drum
drum
25% Thicker