Air Diagnostics and Engineering

What Air Diagnostics and Engineering does

Air Diagnostics and Engineering Inc. is a privately held micro-enterprise headquartered in Harrison, Maine, that manufactures and sells aerosol sampling equipment for indoor and outdoor air quality assessment. Its core product is the MS&T Area Sampler — widely known in the scientific community as the Harvard Sampler — which measures PM-1.0, PM-2.5, PM-10, and total dust fractions using interchangeable impactor nozzles at standard flows of 4, 10, or 20 LPM. The sampler is paired with the SP 280, a quiet (<55 dBA) programmable flow-controlled pumping unit operable at 4-28 LPM with 12 VDC backup power. Sharp-cutpoint impactor performance is validated by decades of University of Minnesota calibration data. The company also resells the EPA-designated BGI PQ200 outdoor PM2.5 sampler and supplies filter cassettes, Teflon filters, drain disks, and pre-weighed filter assemblies as consumables.

The business operates three revenue streams: one-time hardware sales (impactors at $895, SP 280 at $2,395, plus accessories), recurring consumable sales, and indoor air quality consulting services delivered through an affiliated partner, Turner Building Science, LLC (a subsidiary of The H.L. Turner Group Inc.). Customers span research and academic institutions, schools and buildings, and industrial hygiene/occupational health verticals, with the company's marketing limited to a static website and direct phone/email sales. Pricing is quote-based with tiered quantity discounts reaching 40% at 45+ units (with prepayment). Operating geographies include the United States and Europe. The firm is led by President William A. Turner and has operated continuously since at least 1998; in a recent sustainability initiative, it installed a 20 kW PV solar array (via SolarMarket) to power all operations from renewables.

Name

Air Diagnostics and Engineering

Legal name

Air Diagnostics and Engineering Inc.

Website

https://airdiagnostics.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Air Diagnostics and Engineering manufactures aerosol sampling equipment — notably the MS&T (Harvard) Sampler — for indoor and outdoor particulate matter monitoring, serving research institutions, schools/buildings, and industrial hygiene clients with hardware, consumables, and consulting services.

Ownership category

akta.pro rank

Product category

Aerosol Monitoring Equipment

NAICS

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Analytical Laboratory Instrument Manufacturing (334516)

SIC

Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)

akta.pro secondary industries

Indoor Air Quality (IAQ) & Building Environmental Sampling (EUAHACAH), Indoor Air Quality (IAQ), Ventilation & Filtration Services (BPABACAH)

Keywords

• Aerosol monitoring equipment
• Indoor air quality sampling
• Particulate matter measurement
• HVAC consulting services
• Air filter supplies

Headquarters

HQ city

Harrison

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Aerosol Monitoring Equipment Sales: One-time hardware sales of MS&T Area Samplers, impactors, nozzles, pumping units, and accessories. Equipment is sold with standard costs and quantity discounts available for orders of 2+ units.
2. Filter Supplies and Consumables: Ongoing sales of filter media including Anderson Filter Cassettes, Anderson Teflon Filters 37mm, Whatman Polyolefin Drain Disks, and pre-weighed/loaded filter assemblies for use with aerosol sampling equipment.
3. Consulting and Design Services: Consulting services for Indoor Air Quality monitoring, HVAC measurement, HVAC commissioning, healthy and sustainable building design, and corrective solution design. Provided through Turner Building Science, LLC subsidiary.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Air Diagnostics and Engineering Inc. manufactures and sells indoor aerosol monitoring equipment — primarily the MS&T Area Sampler (Harvard Sampler) and the SP 280 Pumping and Control Unit — and resells the EPA-designated BGI PQ200 PM2.5 sampler along with filter media, impactor nozzles, and replacement parts. Through its affiliated Turner Building Science, LLC, the firm also delivers indoor air quality assessments, HVAC commissioning, and sustainable building design consulting services.

Product overview

Air Diagnostics and Engineering manufactures and sells aerosol monitoring equipment for indoor and outdoor air quality assessment. The core product line consists of the MS&T Area Sampler (commonly known as the Harvard Sampler), which measures particulate matter at PM-1.0, PM-2.5, PM-10, and total dust fractions using interchangeable impactor nozzles, paired with the SP 280 quiet pumping and control unit. The company also resells the BGI PQ200 outdoor PM2.5 sampler (EPA designated RFPS-0498-116) for outdoor monitoring applications. Accessories include impactor units, nozzles, filter cassettes, and filter media. Consulting and design services for HVAC commissioning and sustainable building design are provided through a partnership with Turner Building Science, LLC.

Differentiator

Problem solved

Functional benefit

Brands

• MS&T Area Sampler: Indoor area sampler for PM-10, PM-2.5, PM-1.0 and total dusts sampling, also known as the Harvard Sampler
• SP 280

Products and services

• MS&T Area Sampler (Harvard Sampler) A bench-top 2-stage cascade impactor with sharp cutpoints, designed for indoor aerosol sampling in occupied spaces such as offices, schools, and homes, used by academic and government researchers for indoor PM exposure studies.
• SP 280 Pumping and Control Unit A quiet, low-vibration pumping and control unit sold as the standard pump and controller for the MS&T Area Sampler and other indoor air quality instruments.
• BGI PQ200 Ambient Fine Particulate (PM2.5) Sampler EPA-designated PM2.5 reference sampler resold by Air Diagnostics and Engineering for ambient fine particulate monitoring under NAAQS-aligned programs.
• Impactor Units, Nozzles, and Replacement Parts Replacement cascade impactor stages, nozzles (e.g., D50 = 4.0 µm cutpoint, D50 = 2.5 µm, D50 = 1.0 µm, D50 = 0.5 µm), and accessories such as column plates, filters, forceps, and brushes sold to support the MS&T Area Sampler and similar instruments.
• Filter Supplies and Laboratory Consumables Filter cassettes and consumables supplied to researchers and air quality professionals, with reference to University of Minnesota calibration data (e.g., Mroz et al., including a 1998 calibration) supporting flow and cutpoint traceability.
• Indoor Air Quality and HVAC Consulting Services (Turner Building Science, LLC) IAQ assessments, HVAC system commissioning, and sustainable building design services delivered by the affiliated Turner Building Science, LLC practice for schools, universities, and commercial building owners.

Quantifiable outcome

• Sharp 50% size cut at 2.5 microns (Fine Fraction) and 10 microns (Inhalable Fraction)
• +2 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Turner Building Science, LLCcoreImplementation/ SI/ Consulting PartnerConsulting services related to monitoring and evaluation of Indoor and Outdoor air Quality and building HVAC systems, HVAC System Commissioning, healthy and sustainable School and building Design are available through Turner Building Science, LLC, a subsidiary of The H.L. Turner Group Inc.
• BGI Inc. (now bgi.mesalabs.com)coreTechnology or IntegrationAir Diagnostics offers the BGI Inc. PQ200 Ambient Fine Particulate (PM2.5) Sampler (Designated No. RFPS-0498-116) through a partnership with BGI Inc. Information is available via their website link.

Scale indicators2 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Sensidyne: Sensidyne distributes air sampling equipment, personal sampling pumps, and IAQ measurement instruments to industrial hygienists and occupational health professionals, serving the same customer base as Air Diagnostics.
• Casella (Casella CEL): Casella produces air sampling pumps and aerosol monitoring equipment for occupational hygiene and indoor air quality, overlapping with Air Diagnostics on hardware, target customers, and use cases.
• TSI Incorporated: TSI manufactures a broad line of aerosol and air quality measurement instruments (DustTrak, AeroTrak, optical particle counters) for occupational health, indoor air quality, and research, making it the most direct large-scale competitor to Air Diagnostics' MS&T sampler line.
• SKC Inc. SKC designs and sells air sampling pumps, impactors, and filter cassettes for industrial hygiene and occupational exposure monitoring, directly competing with the MS&T sampler and SP 280 pump in the same buyer segment.
• BGI Inc. (Mesa Labs): BGI manufactures ambient PM2.5 samplers (including the PQ200, which Air Diagnostics resells) and is both a supplier and a direct competitor in EPA-designated outdoor particulate monitoring.

Broad incumbents

• IQAir: IQAir is a broader IAQ brand offering consumer and professional air quality monitors, purifiers, and sensor networks, with overlapping end-customer interest in indoor air quality measurement.

Emerging players

• Aeroqual: Aeroqual makes compact real-time air quality monitors (PM, NO2, O3, VOCs) for indoor and outdoor use, representing a newer, sensor-based approach that competes with traditional gravimetric samplers in IAQ applications.
• Aclima: Aclima develops hyperlocal air quality and emissions sensing networks using distributed low-cost sensors, representing an emerging data-platform alternative to gravimetric sampling for indoor and outdoor air quality.
• Sensirion: Sensirion manufactures MEMS gas and particulate sensors (e.g., SPS30 PM2.5 sensor) used in many IAQ monitoring devices, representing a component-level competitive threat to traditional impactor-based sampling.

Others

• H.L. Turner Group / Turner Building Science: Turner Building Science is the affiliated subsidiary through which Air Diagnostics delivers its IAQ and HVAC consulting services, making it the company's implementation partner rather than a competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/air-diagnostics-inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Air Diagnostics and Engineering