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The ornamental design for a water heat exchanger, as shown and described.
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1. Water heat exchanger
| Patent | Priority | Assignee | Title |
| Patent | Priority | Assignee | Title |
| D386561, | Mar 21 1996 | Heat exchanger | |
| D402021, | Dec 12 1996 | HONEYWELL INTELLECTUAL PROPERTIES, INC ; KAZ, INC | Humidifier |
| D453560, | May 08 2000 | HILL-ROM SERVICES PTE LTD | Air flow generator |
| D515190, | Sep 28 2004 | LEGEND BRANDS, INC | Air filtration system |
| D574938, | Apr 26 2007 | HAYWARD INDUSTRIES, INC | Heat exchanger |
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| D655801, | Jun 28 2011 | APOGEM CAPITAL LLC, SUCCESSOR AGENT | Portable submersible condenser/heat exchanger |
| D665483, | Dec 21 2009 | GD Midea Holding Co., Ltd.; GD MIDEA HOLDING CO , LTD | Integral heat pump and hot water dispenser |
| D696389, | Mar 26 2012 | Calentadores de America, S.A. de C.V. | Water heater |
| D728087, | Jun 14 2013 | Heat exchanger | |
| D844123, | Mar 12 2018 | Stiebel Eltron GmbH & Co. KG | Water heater |
| D854673, | Dec 27 2017 | Kice Industries, Inc. | Air filter housing |
| D863519, | Jun 06 2018 | Rheem Manufacturing Company | Non-thermostatic tankless water heater cover |
| D870868, | Jun 06 2018 | Rheem Manufacturing Company | Thermostatic tankless water heater cover |
| D921863, | Apr 07 2019 | Tankless water heater housing |
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