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The ALORAIR WHE4X12-10P is a water-to-water brazed plate heat exchanger with ten 316L stainless steel plates and 1-inch MPT ports, sized for floor heating and similar hydronic loops. Its fishbone-corrugated plates create turbulent flow for strong heat transfer, and the copper brazing in vacuum gives a compact, sealed unit with no gaskets to replace. It is rated to move up to 127,000 BTU per hour with about 2.8 sq ft of transfer area, which puts it in the range of small-to-mid residential loads. Compared with gasketed plate-and-frame exchangers, it is smaller and needs no field assembly, but it cannot be opened for mechanical cleaning, so it suits closed, clean loops rather than dirty or heavily scaling water.
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Lowest price we've seen: $154.95 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
This is a brazed plate heat exchanger for transferring heat between two liquids. It is made of 316L stainless steel plates brazed together with copper in a vacuum environment. The model is WHE4X12-10P, with 10 plates and a 1" MPT port.
The plates have a fishbone (herringbone) corrugated pattern. The channels between the plates create turbulence and reverse the flow of the two media, which improves heat transfer and lowers the scaling coefficient, so it needs cleaning less often. The pattern also provides many support points that reduce pressure drop on the secondary side. The threads are smooth for easier installation and disassembly.
It is used in floor heating, domestic water heating, snow melting, zone heating systems, outdoor wood furnaces, solar heating, radiator and hydronic heating, wood boilers, and hydraulic and lube oil coolers. It can handle media from ordinary water to high-viscosity liquids, certain corrosive acid and alkali liquids, liquids with small solid particles, and steam or gases.
