Class A office tower
Midtown, New York City
504,500 SF
$109,376saved per year
46% ventilation reduction$0.22/SF per yearNo retrofits
Odds are, your building is over-ventilated.
Most buildings heat and cool far more outdoor air than code requires. Poppy measures what every zone actually receives, then helps you cut the excess. No upfront cost. No retrofits.
Measured since 2019
0locations measured by Poppy, across 21 cities in 5 countries.
What we found
Almost none were on target for building code (ASHRAE 62.1).
Published in ASHRAE Journal
75%of Class A and B buildings are over-ventilated.
In 198 Class A office tests, buildings were over-ventilating by 2-2.5x on average.
Your building
Your controls know the setpoint.
Few buildings know how much outdoor air actually reaches each zone. On every floor, the real number is a question mark.
The cost
Over-ventilation is an invisible tax.
At 95°F, every extra cubic foot of outdoor air needs cooling. At 10°F, it needs heating. No alerts. No warnings. Just a higher utility bill.
30-40%of HVAC energy is spent conditioning outdoor air that exceeds code.
$0.10-1.00+per sq ft per year wasted.
NEWIntroducing
Direct Ventilation Monitoring
Step one: a Poppy sensor goes on the outdoor air intake, where your building breathes in. It logs the outdoor CO₂ entering the system.
Battery powered. No BMS, no Wi-Fi, no equipment connection. Patent pending.
Step two
A sensor in each key zone.
Each key zone gets its own battery powered Poppy sensor, logging indoor CO₂ where people work. The intake and the zones are read side by side.
How DVM measures
CO₂ cycle delay = outdoor air rate.
Outside, CO₂ rises and falls every day. Cars add it. Trees and plants remove it. Indoors, the same cycle arrives late, and the delay depends on how much outdoor air the zone receives. DVM reads that delay, zone by zone, around the clock. Measured, not modelled.
- Outdoor CO₂ (intake)
- Indoor CO₂ (zone)
Short delayIndoor tracks outdoor tightly: over-ventilated.
Medium delayAt code.
Long delay, flatUnder-ventilated.
Your building, measured
Every zone, measured in CFM.
Outdoor air delivered to each zone, against its ASHRAE 62.1 target: under code, on target or over code.
What Poppy does next
One building can need all three.
- ImproveUnder code. Poppy works with your engineers on the fix and verifies it.
- MaintainOn target. Alerts + engineering support if a zone drifts.
- OptimizeOver code. Poppy settings cut the excess outdoor air.
How Poppy's service works
- No cost 2-week assessment.Battery powered sensors at the intake and in each zone take baseline OA measurements.
- Building ventilation report.OA CFM against the ASHRAE 62.1 target, zone by zone, plus your savings opportunity. Yours to keep.
- At code or better? Keep the monitoring, free.Poppy's sensors and dashboard stay, at no cost.
- Savings found? Adopt Poppy settings, share the savings.No upfront cost. No retrofits. Budget neutral.
DVM means no-cost ventilation monitoring for every building at code or better.
Assess. Optimize. Maintain.
Outdoor air vs ASHRAE 62.1 targetOverOn targetUnderIllustrative
