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Air-to-Air Heat Exchangers & Heat Recovery · Since 2005

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Heat Recovery for District Heating and Utilities

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Applications

Why It Matters

District heating and utility plants move large heat flows. Capturing waste heat from generation and returning low-grade heat to the network improves fuel use and cuts emissions.

Typical Energy Savings

Reusing industrial or generation waste heat can raise effective system efficiency by 10 to 30 percent depending on the source.

Recommended Technology

  • Large plate heat exchangers for network interfaces
  • Heat pumps to upgrade low-grade recovered heat

What to Watch

  • Temperature levels must match the network
  • Seasonal storage can widen the benefit

Heat Recovery for Bakeries and Commercial Kitchens

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Applications

Why It Matters

Bakeries and kitchens exhaust hot, greasy air from ovens and hoods. Capturing that heat reduces make-up air and water heating loads.

Typical Energy Savings

Recovery on exhaust and pre-heating of incoming air or water can lower energy use by 15 to 30 percent in suitable sites.

Recommended Technology

  • Run-around coils where grease makes direct exchange impractical
  • Air-to-water exchangers for wash and process water

What to Watch

  • Grease-laden air needs frequent, safe cleaning (fire code)
  • NFPA 96 compliance for kitchen exhaust systems

Heat Recovery for Commercial Laundries

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Applications

Why It Matters

Industrial laundries use steam and hot water and vent hot, moist air. That exhaust holds substantial recoverable heat.

Typical Energy Savings

Recovering heat from dryer exhaust and pre-heating water can cut total energy use by 20 to 35 percent.

Recommended Technology

  • Air-to-air plate exchangers on dryer exhaust
  • Air-to-water exchangers to pre-heat wash water

What to Watch

  • Lint and moisture require frequent, easy cleaning
  • Condensate drainage must be managed

Heat Recovery for Swimming Pools and Leisure

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Applications

Why It Matters

Pools lose heat through evaporation and constant ventilation of humid air. Recovery captures energy from that exhaust and slashes the heating bill.

Typical Energy Savings

Exhaust-air recovery combined with a pool heat pump can cut heating energy by 40 to 60 percent.

Recommended Technology

  • Plate or rotary exchangers on pool hall ventilation
  • Heat-pump desuperheater recovering compressor heat

What to Watch

  • Corrosive, chlorine-laden air needs coated, cleanable surfaces
  • Control humidity to protect the building fabric

Heat Recovery for Laboratories and R&D

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Applications

Why It Matters

Labs exhaust large volumes for safety, creating a heavy conditioning load. Recovery lowers that load while maintaining the strict air changes required.

Typical Energy Savings

Sensible recovery on make-up air commonly removes 50 to 70 percent of the heating and cooling demand.

Recommended Technology

  • Plate cores where airstream isolation is mandatory
  • Run-around or coil systems for contaminated exhaust

What to Watch

  • Never mix fume-hood exhaust with supply air
  • Balance energy savings against safety and containment

Heat Recovery for Industrial Manufacturing

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Applications

Why It Matters

Factories exhaust warm air from processes, welding, and general ventilation. Capturing that energy reduces purchased heating and can pre-heat incoming make-up air or process streams.

Typical Energy Savings

Make-up air recovery often cuts heating energy by 40 to 60 percent in heated plants with high exhaust rates.

Recommended Technology

  • Plate or heat-pipe exchangers for make-up air
  • Run-around coils where exhaust is contaminated

What to Watch

  • Dust, fumes, and corrosive exhaust need robust, cleanable cores
  • Comply with process and safety codes for the specific industry

Heat Recovery for Greenhouses and Horticulture

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Applications

Why It Matters

Greenhouses vent warm, CO2-rich air to control temperature, wasting both heat and the fertiliser CO2 plants need. Sensible recovery keeps the energy while the gas stays in the canopy.

Typical Energy Savings

Recovering heat from vents can cut heating demand during cold nights by 20 to 40 percent and reduce supplemental CO2 dosing.

Recommended Technology

  • Sensible plate cores - heat only, no moisture or gas transfer
  • Run-around coils where airstreams must stay separate

What to Watch

  • Humidity management to avoid condensation issues
  • Control strategy that prioritises crop conditions

Heat Recovery for Schools and Universities

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Applications

Why It Matters

Schools ventilate heavily during occupied hours and must protect indoor air quality for students. Recovery does both while controlling operating cost.

Typical Energy Savings

Plate-based recovery commonly removes 55 to 75 percent of the ventilation load across classrooms and halls.

Recommended Technology

  • Crossflow plate cores in rooftop or central units
  • Demand-controlled ventilation tied to CO2 sensors

What to Watch

  • Summer bypass to avoid overheating when cooling is unneeded
  • Easy filter access for custodial staff

Heat Recovery for Hotels and Hospitality

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Applications

Why It Matters

Hotels ventilate lobbies, kitchens, laundry, and hundreds of rooms around the clock. Recovery improves guest comfort while lowering energy cost per occupied room.

Typical Energy Savings

Central recovery can reduce ventilation-related heating and cooling by 50 to 70 percent, with portfolio-wide impact.

Recommended Technology

  • Rotary wheels for large central AHUs
  • Plate cores for zone or suite-level units

What to Watch

  • Kitchen and laundry exhaust carry grease and moisture - filter and clean
  • Noise and vibration control for guest areas

Heat Recovery for Commercial Offices

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Applications

Why It Matters

Offices ventilate during long occupied hours. Older constant-volume systems throw that conditioned air away, wasting heating and cooling simultaneously.

Typical Energy Savings

A crossflow plate core typically cuts the ventilation heating and cooling load by 50 to 70 percent.

Recommended Technology

  • Crossflow plate core - simple, compact, low maintenance
  • Integrated heat-recovery ventilator for retrofits

What to Watch

  • Confirm the fan can handle added static pressure
  • Pair with demand-controlled ventilation for extra savings
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