The WELL Building Standard v2 (IWBI) is a performance standard for occupant health, and ventilation is one of its strongest levers. Where energy codes set a floor for “acceptable” air, WELL rewards going well beyond it. This article covers the Air Concept features most relevant to recovery and ventilation design.
Feature A06 — Enhanced Ventilation Design
The core credit exceeds the minimum outdoor-air rate in ASHRAE 62.1:
| 选项 | Requirement | Points (Cert / Core) |
|---|---|---|
| Increased air supply | Exceed ASHRAE 62.1 by 30% | 1 / 2 |
| Increased air supply | Exceed ASHRAE 62.1 by 60% | 2 / 3 |
| Demand-control ventilation | CO2 < 900 ppm (or outdoor +500) | 1 / 2 |
| Demand-control ventilation | CO2 < 750 ppm (or outdoor +350) | 2 / 3 |
More outdoor air means more recoverable energy — so a membrane ERV or wheel is what keeps the higher ventilation rate affordable.
Supporting Air Features
- A03 / A05 (Air Concept): fundamental and enhanced IAQ, including minimum ventilation and source control.
- A09 / A12: particulate filtration — MERV 13 or better on ventilation systems, with pressure-drop monitoring so filters are changed before they choke the fan.
- A08: continuous monitoring and annual reporting to maintain certification.
- A13: enhanced supply air, e.g. activated-carbon filtration for VOCs.
Why CO2 Is the Proxy
WELL treats CO2 as a stand-in for cumulative indoor pollutants because it is cheap to sense. Holding CO2 below 900 ppm (or 750 ppm for the higher point) signals adequate dilution. But more air is not free — pair the credit with recovery and DCV so the energy penalty stays small, the same logic used for LEED energy-recovery credits.
Recovery Link
WELL’s higher ventilation rates make the recovery device even more valuable than under energy code minimums. Size the core in the AHU 选型计算 on the WELL ventilation rate, not the bare code minimum, to capture both the health and energy wins.
常见问题
How does WELL v2 drive energy recovery?
Its enhanced ventilation features exceed ASHRAE 62.1 rates, and the higher outdoor-air load is what a wheel or membrane recovers to stay affordable.
What are the Enhanced Ventilation options?
Exceeding 62.1 by 30 or 60% outdoor air, or CO2-based demand-control ventilation below 900 or 750 ppm.
Why is CO2 used as a proxy?
It is a cheap indicator of cumulative indoor pollutants and adequate dilution, though more air still needs recovery to control energy cost.
Should recovery be sized on the WELL rate?
Yes. Size the core on the WELL ventilation rate, not the bare code minimum, to capture both health and energy wins.
常见问题
How does WELL v2 drive energy recovery?
Its enhanced ventilation features exceed ASHRAE 62.1 rates, and the higher outdoor-air load is what a wheel or membrane recovers to stay affordable.
What are the Enhanced Ventilation options?
Exceeding 62.1 by 30 or 60% outdoor air, or CO2-based demand-control ventilation below 900 or 750 ppm.
Why is CO2 used as a proxy?
It is a cheap indicator of cumulative indoor pollutants and adequate dilution, though more air still needs recovery to control energy cost.
Should recovery be sized on the WELL rate?
Yes. Size the core on the WELL ventilation rate, not the bare code minimum, to capture both health and energy wins.
相关产品
面向暖通空调与通风的板式、旋转式或热管回收。
空气与液体用大表面积固定芯体。
大风量用高效能量回收。
用于洁净场合的被动、完全分离气流。