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Daikin announces arrival of Tightfit fireless joint for HVAC installations in Europe

Press release, August 2023

Daikin has introduced a new brazeless connection for refrigerant piping which simplifies and speeds up installation whilst avoiding the disruption of the building's occupants and businesses.

Vienna, August 2023 – VRV systems are currently on a steep adoption curve, following a wave of renovations to meet stringent energy performance targets set out by the EU’s Green deal with a view to decarbonizing building stock by 2050. One of the major challenges presented by this development is how to secure the availability of the necessary professionals to cover the increased installation demand.


Offered as a ‘boxed’ solution which simplifies selection and commissioning,  VRV systems are gaining in popularity with long piping lengths and small tube sizes that enable easy integration in buildings, saving time and money. Daikin Tightfit now further speeds up the installation process by providing a reliable, non-brazed connection for refrigerant piping, avoiding the need for a hot work permit, brazing skills or special tools. 

Dedicated refrigerant solution

Daikin’s new Tightfit fireless joint is the first cold-worked connection that has been fully designed and developed by a refrigerant specialist.

By eliminating hot working, refurbishment works can be carried out safely floor-by-floor without interrupting normal building operations or unnecessarily disrupting staff.

"At Daikin, we are committed to delivering innovative solutions that address the evolving needs of the HVAC industry," said Joao Teixeira, Senior Product Officer at Daikin.

The Daikin Tightfit Joint represents a significant advancement in HVAC installation technology, streamlining the process while maintaining the highest standards of performance and reliability.

Fast, safe pipework in just four steps

The Tightfit joint simplifies the installation process, saving time and reducing labor costs. On top of that, no investment in other special tools is required. Install in four easy steps without the need for special tools:

  • Mark the insertion line on the pipe
  • Insert the pipe in the Tightfit joint
  • Tighten the nut with the monkey wrench
  • Check the quality indicator & insertion line

Watch the video at

Durable and reliable

The Tightfit joint has a double-edged claw consisting of a rubber AND mechanical sealing, creating a tight seal around the pipe. Especially developed for refrigerant piping, the Tightfit connection is designed to withstand up to four times the maximum operation pressure of R-32 and R-410A refrigerant. The Daikin Tightfit joint has undergone rigorous testing to ensure its longevity and performance and fully meets ISO4903 standards.


Comprehensive range

The new Daikin Tightfit range offers a choice of sizes and options to cover all VRV installations:

  • Symmetric joints from diameter ¼” (6.35mm) up to 1 5/8” (41.3mm)
  • Asymmetric joints from ¼”-3/8” (6.35-9.52mm) up to 1 1/8" - 1 3/8" (28.6-34.9mm)
  • Refnet ‘Y-branches’ directly connectable to Tightfit

For more information about Daikin Tightfit Joint and other innovative HVAC solutions from Daikin, visit BDGT | Daikin (

Photo copyrights: Daikin Central Europe


Daikin Airconditioning Central Europe

Daikin Airconditioning Central Europe was founded in 1999 with headquarters in Vienna, Austria, as a subsidiary of Daikin Europe N.V. The company's portfolio comprises products and solutions for heating, cooling, ventilation, air purification and refrigeration. More than 700 employees and 2,500 partners are responsible for sales and service activities in 16 countries in Central and Eastern Europe (Austria, Albania, Bosnia Herzegovina, Bulgaria, Croatia, Czech Republic, Hungary, Kosovo, Montenegro, Moldova, North Macedonia, Poland, Romania, Serbia, Slovakia and Slovenia). With Your Daikin World at the Vienna headquarters, the HVAC-R industry and the construction sector have access to a modern experience center for co-creating tailor-made solutions for hotels, retail, offices, and large commercial applications. It also includes one out of nine training centers in the region of Daikin Central Europe.


Media contact

Doris Passler
Manager Corporate Communications Central Europe

Daikin Airconditioning Central Europe HandelsgmbH

Lemböckgasse 59/1/1, 1230 Vienna, Austria

T: +43 (0) 664 24 56 444


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