Publications
Blog
Air-mixing science, case studies and technical notes for engineers and architects.
Technical guides
Start with the guides
Our current, interactive guides to air distribution: simulations, standards and design criteria from our airflow modelling and validation work.
Thermal comfort
ASHRAE 55, drafts and stagnant zones, and how induction and VAV turndown shape the occupied zone.
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Energy efficiency
Where conditioned air loses its value between the diffuser and the people: stratification, VAV minimums, kinked ducts.
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Decarbonization
Heating carries most of a cold-climate building’s energy and carbon: stratification, the constant-volume reset, the winter peak, and why mixing comes before electrification.
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The business case for air mixing
The heating recovered by better mixing lands in the peak hours: tariffs, demand charges and a payback sketch on your own inputs.
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Indoor air quality
Age of air, short-circuiting and the UV-C diffusers that treat air where it enters the room.
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High induction
How discharge velocity draws room air into the jet, and why the plenum connection matters.
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Air distribution effectiveness
Ez in ASHRAE 62.1: what the table default means and how the outdoor air requirement follows it.
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Room airflow modelling
SelectiV: velocity and temperature in the room, Auto-Design, VAV and heating, in a free web app.
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CFD validation
When a room deserves a full simulation: comfort, age of air, CO₂ and Ez before construction.
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Room First
Designing from the occupied room back to the equipment, not the other way round.
Read the guideFrom the archive
Articles published since 2014. Current data for each product is on its product page.
Blog·
Case Study – 43% Energy Savings When Heating High Ceiling Rooms with Thermodynamic Diffusers
A CFD simulation of a restaurant with high ceilings concluded that thermodynamic diffusers helped improve thermal comfort and indoor air quality while saving 43% energy in heating. They were profitable as early as in…
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12ʺ x 12ʺ Square Swirl Diffusers
This is a simple, yet very common question: which square diffusers do you have available in 12” x 12”? At the time of writing this article,…
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Comparing Standard vs High Induction Diffusers – Impact of Airflow Angle
In this video we used smoke tests to compare standard diffusers (3 Cone and Plaque) and High Induction Diffusers ( AXO and PLAY ), and the…
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SKC Constant Air Volume Damper – Quality and Precision Control
Did you know that each SKC Constant Air Volume Damper is individually tested prior to being shipped? Despite its great accuracy by design,…
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Beautiful Designs Using EffectiV Architectural Diffusers
After six years of supplying architectural diffusers on multiple projects across the US and Canada, we thought it would be nice to share…
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Why Use Plenums With 2’x2′ Square Diffusers?
We get this question often when comparing the cost of a simple diffuser with integral backpan versus a diffuser face with a separate…
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The ‘Most Adjustable’ Round Diffuser?
Most large commercial air distribution manufacturers have their particular ceiling round diffuser model. Although some have fixed air…
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Look Up to Increase the Value of Your Commercial Real Estate Property
As a commercial property owner or manager, you are always looking for new ways to increase your commercial property’s value. We’d like to…
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Quick Selection Charts For Ceiling Diffusers
Many factors must be considered when comes the time to select the right products for an application. Introducing many revolutionary and…
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Improving both Comfort and Energy Efficiency with a Single Diffuser?
This is a simple example of how the PLAY Adjustable Diffuser can help save energy while improving the level of comfort . This example is…
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NEX – A Very Unique Architectural Diffuser
The NEX commercial ceiling air diffuser by EffectiV is an amazing product designed with both aesthetic appeal and performance in mind. The…
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The Best Ceiling Air Diffuser For Shared Offices
The PLAY diffuser is the only air diffuser that truly allows for full horizontal adjustment of the airflow. Each round sector can…
Read moreSelectiV · Verified
Designing a room? Start with the air.
Use SelectiV to lay out diffusers in 3D, or ask for a Verified CFD study to validate comfort, IAQ and energy before anything is installed.