Every air-to-air heat exchanger sits between two competing masters: it must recover as much energy as possible while letting the fan push air through with the least resistance. The measure of that resistance is pressure drop, and it is one of the most misunderstood numbers in HVAC specification. A low pressure drop looks cheap on […]
Plate Exchanger Cleaning & Maintenance
Air-to-air plate heat exchangers are deceptively simple devices, but their performance lives or dies on a clean surface. In any ventilation system the core is the only component that actually moves energy from one airstream to another, and when dust, oil aerosol, biofilm or mineral scale coats the plates, both the heat-transfer coefficient and the […]
China Heat-Exchanger Exports 2026: Buyer Guide
China is not just the world’s biggest heat-exchanger market — it is its export engine. 2025 exports reached roughly US$8.9 billion, with the trade surplus up about 47% versus 2020. The first half of 2026 ran ~US$6.7 billion, up 15.8% year on year. Where it goes ASEAN — fastest-growing neighbour market for HVAC and industrial plates. Middle […]
Why Chinese Heat Exchangers Cost What They Do in 2026
“Why is it so cheap?” is the first question every overseas buyer asks. Here is an honest teardown for a mid-range plate heat exchanger. Cost structure (per unit) Raw materials 55–60% — aluminium (6061/6063) or copper, stainless plates (304/316), and gaskets (EPDM/NBR). Material cost is the swing factor. Labour & assembly 15–20% — brazing, sealing, […]
Plate vs Rotary Wheel: What Chinese Factories Are Shipping in 2026
Walk any Chinese HVAC factory floor in 2026 and you will see two air-to-air recovery technologies dominating the line: the fixed-plate recuperator and the rotary enthalpy wheel. They solve the same problem — recovering energy from exhaust air — with opposite mechanics. Knowing which one a supplier pushes tells you a lot about their target […]
China Rise in Heat-Exchanger Patents
For years “Made in China” meant low-cost copies. In heat exchangers that story is ending. Industry reports put Chinese applicants at roughly 38–41% of global heat-exchanger patent filings in 2025 — behind only the combined EU/US lead on fundamental heat-transfer theory, but ahead on volume. Where the patents are going Microchannel aluminium cores for EV […]
How Heat Pipe Heat Exchangers Work: Passive, No-Moving-Parts Recovery
A heat-pipe heat exchanger is the quiet workhorse of air-to-air recovery: it moves heat from one airstream to another with no fan, no pump and no moving parts inside the core, relying entirely on the physics of a two-phase refrigerant loop. That makes it uniquely suited to dirty, greasy or contamination-sensitive exhaust where you want […]
Cross-Flow vs Counter-Flow Heat Exchangers
When specifying a plate air-to-air heat exchanger, the flow arrangement — how the supply and exhaust airstreams meet inside the core — is the single biggest determinant of peak effectiveness and of how the core packages into your unit. Cross-flow (streams perpendicular) and counter-flow (streams opposite) are the two common arrangements, with parallel-flow rarely used […]
Pharma & Hospital Heat Recovery: Zero Cross-Leak
How to specify heat recovery for pharmaceutical cleanrooms and hospital isolation rooms where cross-contamination is unacceptable. Plate, heat pipe, and run-around coil compared.
Frost Protection for Plate Heat Exchangers
In cold-climate ventilation, an exhaust-to-supply air-to-air plate exchanger can frost on the exhaust side when the supply outlet drops below the dew point of the humid exhaust. Frost narrows the channels, raises pressure drop and eventually blocks the core. Knowing when it forms — and which protection strategy to use — keeps the unit efficient […]
Core heat exchanger product families
Air-to-Air Heat Exchanger
Plate, wheel or pipe recovery for HVAC and ventilation.
Plate Heat Exchanger
Stationary, high-surface-area cores for air and liquid.
Rotary Heat Wheel
High-effectiveness energy recovery for large airflows.
Heat Pipe Heat Exchanger
Passive, fully separated streams for clean applications.