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Indoor Air Quality Monitors to Rent
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Q-Trak vs Aethair PRO vs VelociCalc: which IAQ monitor do you need?
QUICK ANSWER
Rent the Q-Trak 7585 for a full IAQ survey, the Aethair PRO for dust and noise with cellular data, the VelociCalc 9565 for airflow, and the Ranger or PAC 8000 for ozone.
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- Best for
- Full IAQ surveys
- Measurement range
- PM mass (PM1.0, PM2.5, PM10): 0 to 500 µg/m³. CO: 0 to 400 ppm. CO2: 0 to 5,000 ppm. TVOC (ppm PID): 0 to 2,000 ppm. Temperature: 32°F to 140°F (0°C to 60°C). Relative humidity: 0% to 100% RH. Barometric pressure: 7.7 to 37.2 inHg (196 to 945 mmHg)
- Est. battery run time
- 8+hrs
- Best for
- Dust, noise & remote data
- Measurement range
- CO2: 400 to 5000 ppm
- Est. battery run time
- ~18hrs
- Best for
- Airflow + CO2 (982 probe)
- Class
- Multiparameter Ventilation Meter
- Measurement range
- Air Velocity (thermoanemometer probe): 0–9,999 ft/min (0–50 m/s); Air Velocity (pitot or Airflow Probe 800187): 250–15,500 ft/min (1.27–78.7 m/s); Temperature: 14–140°F (–10 to 60°C) with 964, 966 or 982 probe; Relative Humidity: 5–95% RH; Static/Differential Pressure: –15 to +15 in. H2O (–3,735 to +3,735 Pa); Barometric Pressure: 20.36–36.648 in. Hg (517.15–930.87 mm Hg); CO2 (Probe 982): 0–5,000 ppm; CO (Probe 982): 0–500 ppm
- Est. battery run time
- 12-15hrs
- Best for
- Ozone, two ranges
- Measurement range
- OZL: 0 to 0.5 ppm. EOZ: 0 to 10 ppm
- Est. battery run time
- 24hrs
- Best for
- Personal ozone
- Measurement range
- 0 to 10 ppm O3
- Est. battery run time
- Up to 24 months
Doesn't fit
✓ = has it· CO2 = co2· PM = particulates (pm)· O3 = ozone. Battery times are estimates.
| Instrument | Best for | SamplingHow air reaches the sensors | Est. battery run timeAC power for longer runs | Starting at |
|---|---|---|---|---|
| Multi-parameterSeveral readings in one survey. | ||||
| Top pick Q-Trak 7585 |
Full IAQ surveys | Fan-assisted diffusion (no pump) | 8+hrs |
$225.00 / day Rent → |
| Aethair PRO | Dust, noise & remote data | Internal pump with automatic flow control | ~18hrs |
$250.00 / day Rent → |
| VelociCalc 9565 | Airflow + CO2 (982 probe) | — | 12-15hrs |
$55.00 / day Rent → |
| Ozone onlyDedicated ozone monitors. | ||||
| Ranger | Ozone, two ranges | Internal pump | 24hrs |
$115.00 / day Rent → |
| PAC 8000 O3 | Personal ozone | Diffusion (no pump) | Up to 24 months |
$115.00 / day Rent → |
Specs checked Oct 2026. New to CO2 monitoring? Read the carbon dioxide guide · Ozone? Read the ozone guide
Charges stop when UPS or FedEx scans your return How renting works →
Indoor air quality monitor questions
All rental FAQs →The Q-Trak 7585. It logs CO, CO2, TVOC, PM1.0, PM2.5, PM10 and particle counts, plus temperature, humidity and barometric pressure. The Aethair PRO reads PM1, PM2.5, PM10 and TSP with noise, temperature and humidity.
The Q-Trak 7585. Its PID reads TVOC from 0 to 2,000 ppm alongside CO, CO2 and particulates.
The Ranger reads 0 to 0.5 ppm (OZL head, 0.001 ppm resolution) or 0 to 10 ppm (EOZ head), with an internal pump and 1-minute logging. The PAC 8000 O3 is a personal detector that reads 0 to 10 ppm and shows the TWA.
The Q-Trak 7585 stores over 100 days of data at one-minute intervals, and its AC adapter is included for continuous use. The Aethair PRO runs on AC power and sends data over cellular or Wi-Fi.
More about Indoor Air Quality
Indoor air quality (IAQ) monitors measure parameters like CO₂, temperature, relative humidity, particulate matter, and VOCs to evaluate ventilation performance, investigate occupant complaints, and document baseline conditions in offices, schools, hospitals, and construction sites. Choose a multi-parameter IAQ monitor when you need simultaneous readings across several indicators in a single survey, rather than deploying separate instruments for each measurement. Our rentals include the TSI Q-Trak XP 7585, the TSI EVM-7, and the Aethair PRO, all annually calibrated and functionally tested before shipment, with sensor configurations matched to your specific investigation. If you are unsure which combination of parameters fits your project scope, our technical team can help select the right instrument and sensor setup so your data is consistent and report-ready.
This guide explains what each instrument does. Your safety professional decides which method and criteria apply to your site.
Not sure which monitor fits?
Tell us about the building or complaint and we will recommend the right setup.



