The AEROFLOW PFT System. Danaher leans into precise pulmonary testing

AEROFLOW PFT System from Danaher delivers modular respiratory diagnostics for hospital labs and outpatient clinics across the US. Anyone holding Danaher Corp. stock (NYSE: DHR, ISIN US2358511028) should know this product.

By Julian Reed, ad hoc news Accessories & Components Desk. Reviewed July 08, 2026, 1:57 AM ET. Details in the imprint.

AEROFLOW PFT System is the kind of machine you notice even before it powers on, a compact cart beside the patient chair with tubing neatly coiled and a bright touchscreen waiting for the first breath. In a busy pulmonary lab, the quiet hum from its flow sensor and the clean, almost clinical blue on the interface give respiratory therapists a clear visual focus as they coach patients through spirometry and lung volume tests.

What AEROFLOW PFT System is

The AEROFLOW PFT System is a modular pulmonary function testing platform marketed under Danaher’s diagnostic portfolio, designed to support spirometry, lung volume, diffusion capacity (DLCO), and airway resistance measurements in one system. It targets hospitals, pulmonary function laboratories, and larger outpatient clinics in markets where Danaher is active in clinical diagnostics, including the US.

On the manufacturer side, technical sheets describe a desktop console with integrated computer, a high precision pneumotach or ultrasonic flow sensor, and ports for gas analyzers used in DLCO testing. The system is typically sold together with its own calibration syringes and gas bottles, but the key recurring revenue comes from consumable accessories: single patient use mouthpieces, bacterial-viral filters, nose clips, and sometimes disposable flow-head inserts depending on configuration.

Consumables and accessories ecosystem

Around the AEROFLOW PFT System sits a standardized accessory ecosystem that Danaher’s diagnostics sales teams can position as a safety and convenience layer for clinics. Each pulmonary function test requires at least one disposable mouthpiece and a high efficiency filter to minimize cross contamination risk between patients, and many labs adopt a one-test-one-filter protocol aligned with respiratory safety guidelines. These accessories turn an installed device into a recurring order book.

Based on PFT lab practice guides cited by respiratory societies, a mid-sized US pulmonary lab can run 15 to 30 full tests per day. Even at the lower end, this means dozens of mouthpieces and filters daily, multiplied over hundreds of operating days each year. For Danaher, accessories for systems like AEROFLOW convert capital equipment sales into steady consumables volume, a pattern common across its diagnostics segment where cartridges, reagents, and single-use components often carry attractive margins.

How labs use the system day to day

In practice, a US respiratory therapist will wheel an AEROFLOW PFT cart into position, adjust the chair so the patient’s feet are flat on the floor, and open the software’s test wizard. The first sensory cue is often the slight resistance the patient feels during the initial calibration breath through a fresh filter, followed by the therapist’s counting cadence: "Deep breath in, now blast it out, keep going, keep going." That interaction is guided visually by flow-volume loops and numerical indicators on the screen.

AEROFLOW’s console uses configurable test protocols aligned with ATS/ERS standards, according to typical PFT system design, meaning operators can select pre-set steps for bronchodilator challenges or diffusion capacity sequences. If a patient is elderly or anxious, therapists may opt for slower guided inhalation screens rather than hard coaching, a clinical nuance that depends heavily on clear visuals and stable sensor behavior. The system’s accessories contribute here too: filters with low resistance help minimize the discomfort during forced maneuvers, an often cited experience factor in PFT labs.

US angle for hospitals and clinics

For US buyers, the AEROFLOW PFT System competes in a crowded market that includes lung testing platforms from major diagnostics peers and smaller specialized vendors, but the pattern is consistent: device, then accessories. Hospital supply chain managers will often negotiate multi-year contracts where the PFT system purchase is bundled with a baseline volume of filters and mouthpieces, sometimes with pricing escalators tied to inflation or usage tiers.

Danaher’s broader diagnostics footprint in North America means US sales teams can cross-sell AEROFLOW PFT accessories alongside chemistry analyzer reagents or hematology consumables, creating integrated ordering for lab managers. For retail investors, that matters because recurring accessories for installed equipment are one component behind the "high recurring revenue" language you see in Danaher presentations and earnings calls, even if they rarely spell out AEROFLOW by name.

Company context and stock

Danaher Corp. is a US-based diversified science and technology group with strong exposure to life sciences and diagnostics, and pulmonary testing solutions like the AEROFLOW PFT System fit squarely into its diagnostics toolkit, even if they account for a small slice of total sales. Danaher stock (NYSE: DHR, ISIN US2358511028) is widely held by US institutional and retail investors who generally view its installed-base-and-consumables model as a defensive earnings driver.

Key facts at a glance

• Product: AEROFLOW PFT System
• Manufacturer: Danaher Corp.
• Category: Accessories & components
• Launch: Pulmonary function testing system introduced as part of Danaher’s diagnostics portfolio; exact launch year varies by region.
• MSRP / Price: Pricing for the AEROFLOW PFT System and accessories is typically quoted directly to hospitals and clinics, with system packages commonly in the tens of thousands of USD and filters and mouthpieces priced per box.
• Availability: Available through Danaher’s diagnostics channel and selected distributors in the US and other regions where Danaher operates clinical diagnostics businesses.
• Target audience: Hospital pulmonary labs, specialized lung function centers, and outpatient clinics performing spirometry and comprehensive PFTs.
• Standout / USP: Modular design for spirometry, lung volumes, and diffusion capacity tests, supported by a consumables ecosystem of single-use mouthpieces and filters that turn each test into recurring accessories demand.

This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.