HVAC technicians — heating, ventilation, and air-conditioning workers — were heavily exposed to asbestos because the systems they installed and serviced were insulated with it throughout.
How HVAC Technicians Were Exposed
Furnaces, boilers, ductwork, and the pipes carrying heated and chilled fluid were allegedly wrapped in asbestos insulation, lagging, and cement, and sealed with asbestos gaskets and tape. HVAC work meant cutting, removing, and reinstalling this insulation, replacing gaskets, and working in boiler rooms and mechanical spaces where asbestos was concentrated. Servicing old furnaces and boilers disturbed deteriorating insulation on every call.
The Asbestos Materials — and the Products They Came In
Exposure tracked to a handful of material types. Each links to products documented in the AsbestosIndex as allegedly asbestos-containing:
Duct insulation, lagging & connectors — cut and reinstalled during install and service:
- Carrier asbestos-fabric ductwork lagging · York asbestos-lined duct wrap · Trane asbestos-cement air-handler drain-pan insulation
Boiler & furnace cement and insulation — troweled, patched, and torn out:
- A.P. Green insulating cement · Eagle-Picher insulating cement · 85% magnesia cement · H.B. Smith cast-iron boiler asbestos jacket & door gasket
Gaskets & tape — scraped off and replaced at flanges and access doors:
- Garlock compressed asbestos sheet gaskets · Amatex asbestos yarn and tape · Crane Cranite sheet gasketing
Pipe insulation on chilled- and hot-water lines — cut and fitted:
- Owens-Corning Kaylo pipe & block insulation · Johns-Manville Kaylo pipe insulation — see the full Pipe Insulation category.
Take-Home Risk to Families
Like other dusty trades, HVAC technicians carried asbestos fibers home on their clothing, skin, and tools — exposing spouses and children who never worked with asbestos. See take-home asbestos exposure.
Browse the full Boilers and HVAC Equipment categories for more.
If you worked as an HVAC technician and were diagnosed with mesothelioma or another asbestos-related disease after exposure to asbestos on the job, you may have a legal claim.
Product references reflect allegations documented in publicly filed asbestos litigation. This information is published by an independent media organization — not a law firm — and is educational only. It does not constitute legal advice or provide legal services.