Listen and investigate
Review complaint patterns, building history, ventilation, and possible sources.
Ventilation Assessments
Investigate airflow, outdoor-air delivery, and operating conditions that may contribute to indoor complaints.
We confirm the scope, location, and appropriate specialist support before scheduling.
Is this the right service?
- Occupants report odors, irritation, or concerns associated with a space.
- Ventilation, temperature, or humidity problems keep returning.
- Spot readings or previous testing have not explained the concern.
How we help.
Collect useful evidence
Select measurements, continuous logging, or laboratory sampling around the question.
Recommend next steps
Explain findings, limitations, corrective options, and what should be rechecked.
What you receive.
A clear record your facilities, operations, or EHS team can use.
- A record of the complaint, building conditions, and scope
- Field observations and measurement or sampling results
- Interpretation with appropriate criteria and limitations
- Corrective recommendations and a follow-up plan
See how we document the work.
Our report example shows how field observations become findings, recommendations, and a way to verify completion.
Methods, criteria & technical scope
What we evaluate
Outdoor air, distribution, exhaust, and pressure all matter.
A ventilation assessment may include HVAC operating schedules, outdoor-air pathways, supply and return distribution, exhaust systems, filter condition, airflow direction, room-to-room pressure, and direct measurements selected for the project.
CO₂ in context
CO₂ can be useful without being treated as a universal pass/fail limit.
Indoor CO₂ can help characterize occupancy and ventilation patterns, particularly when interpreted with outdoor concentration, occupancy, HVAC operation, and time. It does not by itself establish compliance with ASHRAE Standard 62.1 or prove that a space is safe from all contaminants.
Standards
Ventilation evaluation depends on the question.
ASHRAE Standard 62.1 is commonly used as a consensus reference for ventilation in many nonresidential buildings. OSHA also maintains specific ventilation and contaminant requirements for certain workplace conditions. Prudence identifies which criteria are relevant to the specific system and decision.
Tell us what is happening.
Share the concern, facility location, and preferred timing. We will review the request and confirm the proposed scope and quote.