Inside TKMicro, key advantages of microchannel technology

In the actual landscape, marked by rising energy costs, ambitious environmental goals, and increasingly strict regulations, the HVAC/R sector is called to take meaningful steps toward long-term evolution.

Energy efficiency, technological innovation, and sustainability are now essential keys to meeting new challenges and building long lasting competitive advantage.

In this context, microchannel technology emerges as a strategic solution capable of:

• Significantly increasing system energy efficiency;
• Reducing environmental impact and CO₂ emissions;
• Improving both operational and economic sustainability of thermal solutions.

For years, ThermoKey has been investing in innovation and sustainability through TKMicro, its high-performance microchannel heat exchanger range. Designed to ensure energy efficiency, long-term reliability, and reduced environmental impact, TKMicro meets the ever-evolving needs of the HVAC/R industry.

Thanks to this advanced technology, ThermoKey has become a trusted European partner for the production and supply of custom thermal solutions aligned with the most modern ESG criteria.

1. High energy efficiency

Thanks to their design with Multi Port Extruded (MPE) tubes, TKMicro cores deliver significantly higher heat exchange efficiency by offering a larger heat transfer surface area within the same volume.

MPE tubes’ flat profile is specifically designed to reduce air drag and minimize recirculation zones behind the tubes, optimizing aerodynamic flow.

The result is a reduction in pressure drop, which increases the efficiency of the exchange surface and allows for a higher airflow rate at the same fan speed.

Combining these factors leads to lower power demand from the fans, reducing both overall energy consumption and the unit’s noise level.

2. Sustainability and ESG compliance

In a market where sustainability and environmental responsibility are strategic pillars, TKMicro solutions fully embrace ESG principles — combining high operational performance with reduced environmental impact across the entire product life cycle.

100% Recyclable Aluminum

All TKMicro heat exchangers are made from fully recyclable aluminum — a material that combines high thermal conductivity, low weight, and lower environmental impact. Compared to copper, aluminum has a lower carbon footprint and a more cost-effective production process, making it the ideal choice for both technical and economic performance.

Compatible with natural and low-GWP refrigerants

TKMicro® solutions are designed for maximum compatibility with a wide range of refrigerants, including:

• Standard refrigerants: R410A, R134a, R22, R407C, R404, R507A, R245fa;
• Low GWP and natural refrigerants: ammonia (R717), propane (R290), R32 (TS >120°C, max 45 bar, tested 50 bar), and new refrigerants such as R-1234ze.

This versatility facilitates integration in decarbonization-focused projects and ensures compliance with tightening European environmental regulations.

3. Lower transport and installation costs

Thanks to their compact and lightweight structure, entirely made of aluminum, TKMicro heat exchangers deliver greater thermal capacity at transported weight and volume – compared to same capacity round tube.

This translates into units with a reduced footprint, ideal for tight spaces and complex logistics. The lightweight design also simplifies handling and installation operations, significantly reducing both CAPEX and maintenance costs.

The result is improved project efficiency, with additional benefits in terms of reduced indirect carbon footprint and optimized assembly time.

4. Lower noise 

The optimized microchannel geometries and improved airflow distribution enable greater efficiency even at low fan speeds, contributing to a reduction in the unit’s overall sound level. This advantage is particularly relevant in applications where acoustic comfort is essential, such as data centers and urban installations.

ThermoKey’s extensive know-how and experience in heat exchange have allowed the company to go beyond the design of heat exchangers, developing complete microchannel units such as Remote Condensers and the Modular Dry Cooler. These advanced solutions significantly enhance system efficiency while reducing energy consumption and noise emissions.

5. High corrosion resistance

TKMicro heat exchangers are built from high-performance aluminum alloy, ensuring superior durability and consistent reliability over time, even in aggressive environments or challenging weather conditions.

By using aluminum for both tubes and fins, the risk of galvanic corrosion is minimized, enhancing the lifespan of heat exchangers. Additional external surface treatments may be applied to further increase corrosion resistance, making TKMicro ideal even for extremely aggressive environments or marine settings.

The result is a robust, long-lasting solution designed to deliver long-term reliability and minimal maintenance requirements.

6. Custom made solutions with TKDesk

The TK Micro range offers high customization and maximum design flexibility, making it the ideal solution for complex HVAC/R applications. Thanks to its availability in various modular configurations, the heat exchangers can be precisely tailored to meet the specific requirements of each project. TK Micro is suitable for a wide range of applications—from process cooling to industrial air conditioning and data center thermal management—ensuring efficiency, reliability, and seamless integration in any operating environment.

To support engineers and OEMs in selecting the best configuration, ThermoKey has developed TKDesk, an intuitive, web-based configuration tool that requires no installation and is always up to date. In just four guided steps — Application, Parameters, Model, Detail — users can identify the ideal microchannel heat exchanger for their needs. TKDesk delivers reliable thermodynamic simulations, detailed technical output, and the support of ThermoKey’s team, helping reduce lead times and design errors.