Professional-Grade Instruments

Indoor Air Quality Testing for NYC Homes & Buildings

Headaches, fatigue, respiratory issues, or unexplained odors in your home or office? The air inside your building may be the cause. We use professional multi-parameter instruments to measure CO, CO₂, TVOCs, formaldehyde, and particulates in real time on-site — plus optional certified laboratory sampling for mold spores and specific chemicals when you need documentation that holds up in court or with insurance. Serving homes, offices, and commercial buildings across all five NYC boroughs.

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When Should You Test Your Indoor Air Quality?

The EPA estimates that indoor air can be two to five times more polluted than outdoor air. In NYC's tightly sealed, densely built environment — from older apartment buildings with limited ventilation to newly renovated lofts off-gassing VOCs — indoor air quality problems are more common than most people realize.

Unexplained Health Symptoms

Persistent headaches, dizziness, fatigue, nausea, or respiratory problems that improve when you leave the building are classic signs of an indoor air quality problem that needs professional assessment.

Chemical Odors You Can't Identify

Persistent chemical smells, musty odors, or any unusual scent could indicate elevated VOCs, mold growth, or other airborne contaminants. If you smell it, there's something to measure. Musty smell? It could be mold.

After Renovations or Construction

New paint, flooring, cabinets, and building materials off-gas volatile organic compounds including formaldehyde. Post-renovation IAQ testing confirms whether your space is safe to occupy.

Workplace & Tenant Complaints

Property managers and employers in NYC facing air quality complaints need documented, professional testing results. Our reports identify the issue and demonstrate a responsible response to occupants, HPD, or legal counsel.

Humidity & Ventilation Concerns

Excess humidity promotes mold growth and dust mites. Poor ventilation traps CO₂ and contaminants indoors. We measure both and identify the root cause — common issues in NYC's older building stock.

Building Purchase or Commercial Lease

Verify indoor air conditions before committing to a purchase or signing a commercial lease. Our reports provide objective data for informed decision-making and can become part of your transaction record.

What We Test For

Our IAQ assessments use professional-grade multi-parameter instruments that measure all key indoor air quality indicators simultaneously in real time. We walk room-by-room to pinpoint exactly where problems originate — and combine instrument readings with certified laboratory sampling when needed.

Carbon Dioxide (CO₂)

Elevated CO₂ is a direct indicator of inadequate ventilation and is linked to drowsiness, reduced concentration, and headaches. We measure levels in real time and compare against ASHRAE ventilation standards.

Carbon Monoxide (CO)

A colorless, odorless gas produced by gas stoves, furnaces, boilers, and vehicles in attached garages. Even low-level chronic exposure causes headaches and fatigue. High levels are life-threatening and require immediate action.

TVOCs & Formaldehyde (HCHO)

Our PID sensor screens total volatile organic compounds in real time in parts per billion (ppb) — giving you immediate on-site answers. Our instruments also measure formaldehyde directly in real time. For certified, litigation-grade results, we collect targeted air samples for laboratory analysis that identifies specific compounds including benzene and toluene. Lab sampling is available at additional cost and recommended for legal or insurance documentation.

Particulate Matter (PM2.5 / PM10)

Real-time mass concentration readings for two particle size ranges in µg/m³. Fine and ultrafine particles penetrate deep into lungs — particularly relevant in NYC buildings near construction, busy roadways, or after fire or renovation events.

Temperature, Humidity & Dew Point

We log temperature, relative humidity, barometric pressure, and dew point to identify condensation risk, ventilation deficiencies, and conditions that promote mold growth — critical data for older NYC buildings with envelope and HVAC issues.

Mold Spores & Biological Contaminants

Real-time particulate monitoring flags elevated spore levels on-site. For certified species identification and spore counts — the standard required by attorneys, insurers, and HPD — we collect spore trap air samples and send them to a NYS-certified laboratory for microscopic analysis. Lab sampling is available at additional cost.

Your IAQ Report

Every assessment produces a comprehensive report with real-time instrument data — CO, CO₂, TVOC, formaldehyde, PM2.5, PM10, temperature, humidity, dew point, and barometric pressure — logged by location and time throughout your property. When laboratory sampling is performed (mold spores, specific VOCs), those certified results carry additional weight for insurance claims, legal proceedings, and regulatory compliance. All findings are compared against established health and safety guidelines from ASHRAE, EPA, and OSHA, with clear identification of problem sources and specific recommendations. Our reports serve both technical professionals and non-technical property owners.

FAQ

Common Questions About Indoor Air Quality Testing

Every assessment includes real-time instrument readings for CO₂, CO, total volatile organic compounds (TVOCs measured in parts per billion via PID sensor), formaldehyde, particulate matter (PM2.5 and PM10), temperature, relative humidity, barometric pressure, and dew point.

For situations requiring certified, litigation-grade documentation — insurance claims, legal cases, or regulatory compliance — laboratory sampling is available at additional cost. Lab analysis identifies specific compounds including individual VOCs and mold spore species, and carries more evidentiary weight than real-time readings alone.
Real-time monitoring gives you answers on the spot. Calibrated instruments measure CO, CO₂, TVOCs, formaldehyde, particulates, temperature, and humidity during the inspection — you see results in real time and know immediately if there's a problem.

Laboratory sampling goes a level deeper. We collect air samples and send them to a NYS-certified lab for analysis of specific compounds — individual VOCs, mold species. Results take 24–48 hours but provide certified documentation that holds up in court, with insurers, and for regulatory compliance.

Most clients benefit from both. We'll recommend the right combination based on your situation and what you need the results for.
It's strongly recommended. Paint, flooring, adhesives, cabinetry, and composite wood products off-gas volatile organic compounds — including formaldehyde — that can cause headaches, nausea, respiratory irritation, and worse. These chemicals can persist for weeks or months after work is completed.

Testing confirms whether contaminant levels have returned to safe ranges before you move back in or resume normal occupancy. This is especially important in bedrooms, nurseries, and any space where children or people with respiratory conditions spend time.
Persistent headaches, fatigue, dizziness, difficulty concentrating, eye and throat irritation, and worsening asthma or allergies are all common signs. The telltale pattern: symptoms improve when you leave the building and return when you come back.

If multiple people in the same space are experiencing similar issues, the building environment is very likely the cause. Professional testing identifies exactly what's in the air so you can fix it — rather than guessing or just living with it.
Yes. NYC landlords have a legal obligation to maintain habitable conditions, which includes adequate ventilation and freedom from environmental hazards. If poor air quality results from building conditions — broken ventilation, mold, malfunctioning combustion appliances, or construction defects — the landlord may be liable.

A professional IAQ report documents the conditions with calibrated instrument data and, when needed, certified lab results. That documentation supports HPD complaints, breach of warranty of habitability claims, and rent abatement proceedings. Without objective data, it's your word against theirs.
Consumer-grade monitors give you a rough idea, but they lack the precision, calibration, and documentation required for actionable results. They can't identify specific compounds, they drift out of accuracy quickly, and their readings don't hold up in any professional context.

Our instruments are factory-calibrated, NIST-traceable, and measure parameters consumer devices simply can't — including VOCs in parts per billion via photoionization detection. More importantly, we interpret the data in context, identify the source of the problem, and deliver a professional report you can actually use to fix it or support a claim.
For the most accurate results, keep windows closed for at least 12 hours before the test and maintain normal HVAC operation — don't run extra fans or air purifiers. Avoid heavy cleaning, painting, or using strong chemicals the day of testing.

These conditions replicate your typical indoor environment so the results reflect what you're actually breathing day to day. We'll walk you through any specific preparation when you schedule.

Related Services

Air quality problems are often connected to mold growth and fire damage. These services address the root causes.

Mold Inspection & Testing

Musty odors and elevated spore counts often point to hidden mold. A licensed mold assessment identifies the source and provides certified lab documentation.

Learn more →

Post-Fire IAQ Assessment

After a fire, smoke residue creates serious air quality hazards. Our post-fire assessment tests for soot, CO, VOCs, and combustion byproducts.

Learn more →

Get Your Air Tested

Find out what's in the air you breathe. Same-day service available across all five NYC boroughs.

( 718 ) 602-6800 contact@airqc.info
or send us a message
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Brooklyn, New York · Serving All 5 Boroughs