Lochinvar Corporation: Asbestos-Containing HVAC Equipment

Lochinvar Corporation is an American manufacturer with a long history in the heating and hot water equipment industry. The company, headquartered in the United States, produced a range of boilers, water heaters, and related HVAC components that were widely installed in commercial, industrial, and residential settings across the country. According to asbestos litigation records, Lochinvar products manufactured and sold through approximately the early 1980s have been identified in exposure claims filed by workers and building occupants who encountered asbestos-containing materials during installation, maintenance, and repair activities.

This reference article is intended to assist workers, their families, and legal professionals in researching potential occupational asbestos exposure histories connected to Lochinvar heating and HVAC equipment.

Company History

Lochinvar has operated as a domestic manufacturer of water heating and space heating equipment for decades, supplying products to the commercial construction, industrial facility, and residential markets. The company built a reputation for boilers and water heaters used in schools, hospitals, apartment complexes, and industrial plants — settings where large-scale hot water and hydronic heating systems were essential infrastructure.

During the mid-twentieth century, asbestos was a standard component in heating equipment manufacturing across the United States. Thermal insulation, gaskets, rope seals, and refractory linings made with asbestos were incorporated into boilers and water heaters by numerous manufacturers, including, according to asbestos litigation records, Lochinvar. Asbestos was prized for its resistance to heat and fire, its durability under cyclic thermal stress, and its relatively low cost — qualities that made it nearly ubiquitous in HVAC and heating system construction from the 1940s through the late 1970s.

Regulatory pressure beginning in the 1970s, driven in part by the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA), prompted manufacturers to phase out asbestos-containing materials. Lochinvar is understood to have ceased incorporation of asbestos in its products by approximately the early 1980s. Equipment manufactured and installed before that transition, however, remained in service in many facilities for years or decades afterward, creating ongoing exposure risks for maintenance and service personnel.

Asbestos-Containing Products

According to asbestos litigation records, plaintiffs alleged that Lochinvar manufactured and sold heating and hot water equipment that contained asbestos as a component material during the relevant period, generally understood to span from the mid-twentieth century through approximately the early 1980s.

Court filings document that the types of Lochinvar equipment most frequently identified in exposure claims include boilers and commercial water heaters. While specific model designations vary across individual claims, the product categories alleged to have incorporated asbestos-containing materials include:

  • Boilers: Residential and commercial boilers manufactured by Lochinvar were alleged in litigation to have incorporated asbestos-containing insulation blankets, internal refractory materials, and door gaskets. These components were used to retain heat within the combustion chamber and to create flame-resistant seals at access points and flue connections.

  • Water Heaters: Plaintiffs alleged that commercial-grade water heaters bearing the Lochinvar name contained asbestos-based insulation applied to the exterior jacket or incorporated within internal components. Asbestos rope and sheet gasket materials were commonly used at connection points, burner assemblies, and inspection panels.

  • Replacement and Repair Parts: Court filings document claims involving asbestos-containing replacement gaskets and insulation materials supplied or specified for use with Lochinvar equipment. Workers performing routine maintenance and service on installed units were alleged to have encountered these materials when disassembling, repairing, or re-insulating older equipment.

It is important to note that specific product model numbers and precise asbestos content figures are not universally documented across all litigation records. Workers and attorneys researching exposure histories are encouraged to consult service records, building maintenance logs, and product installation documentation when available.

Occupational Exposure

According to asbestos litigation records, the occupational groups most frequently identified as having experienced potential exposure to asbestos from Lochinvar heating equipment include:

Plumbers and Pipefitters: Tradespeople who installed, connected, and maintained boiler and water heater systems regularly worked in close proximity to equipment alleged to contain asbestos. Cutting, trimming, or disturbing asbestos-containing insulation and gasket materials during rough-in, connection, or repair work could release airborne asbestos fibers into enclosed mechanical rooms and utility spaces.

HVAC Technicians and Boiler Operators: Service technicians and boiler room operators who routinely inspected, cleaned, and repaired heating equipment were alleged in court filings to have been exposed to asbestos during tasks such as gasket removal and replacement, burner assembly servicing, and refractory inspection. These tasks frequently involved scraping, wire-brushing, or otherwise disturbing friable asbestos-containing materials.

Building Maintenance Workers: Maintenance personnel employed in schools, hospitals, apartment buildings, and commercial facilities where Lochinvar equipment was installed faced ongoing exposure risk. Plaintiffs alleged that routine access to mechanical rooms — even without direct contact with the equipment — could result in inhalation of settled asbestos dust disturbed by the work of others.

Insulation Workers (Insulators): Insulators who applied, removed, or repaired thermal insulation on boilers and associated piping systems were among the trades most heavily represented in asbestos litigation generally. Court filings document claims by insulators who worked alongside or directly on equipment manufactured by Lochinvar and other heating equipment companies.

Construction Tradespeople on New Construction Projects: During periods of peak commercial and residential construction in the 1950s, 1960s, and 1970s, Lochinvar equipment was installed in newly constructed facilities alongside numerous other asbestos-containing products. Workers on these jobsites were potentially exposed to asbestos from multiple simultaneous sources, complicating but not precluding exposure documentation.

Asbestos-related diseases — including mesothelioma, asbestos-related lung cancer, and asbestosis — typically have latency periods of 20 to 50 years from the time of initial exposure. As a result, workers exposed to asbestos during the mid-twentieth century peak of industrial asbestos use may only now be receiving diagnoses tied to exposures that occurred decades ago.

Lochinvar is classified under Tier 2 for purposes of this reference site, meaning the company has been named as a defendant in asbestos-related civil litigation but has not established a dedicated asbestos bankruptcy trust fund. Lochinvar has not, to the knowledge of this site’s editors, undergone asbestos-related bankruptcy proceedings that would have resulted in the creation of a trust fund for claimants.

According to asbestos litigation records, claims involving Lochinvar have been filed in civil courts by plaintiffs alleging injury from exposure to asbestos-containing equipment. These claims have proceeded through the civil tort system rather than through a trust fund claims process. Court filings document that plaintiffs alleged Lochinvar knew or should have known of the hazards posed by asbestos-containing materials in its products and failed to provide adequate warning to end users and workers.

Legal liability has not been established as a matter of settled fact, and individual case outcomes vary. Workers or family members who believe they may have been exposed to asbestos from Lochinvar heating equipment should be aware that:

  • Civil litigation against Lochinvar, if pursued, would proceed through the standard tort system, typically involving discovery, expert testimony regarding product identification and asbestos content, and trial or settlement proceedings.
  • Claims involving multiple asbestos product manufacturers — which is common given the widespread use of asbestos across HVAC systems, insulation, and building materials — may also implicate asbestos bankruptcy trusts established by other companies whose products were present on the same jobsites.
  • Statutes of limitations for asbestos claims vary by state and generally begin running from the date of diagnosis rather than the date of exposure. Prompt consultation with an attorney experienced in asbestos litigation is advisable.

Summary: Who This Information Is For

If you or a family member worked as a plumber, pipefitter, boiler operator, HVAC technician, insulator, or building maintenance worker at any time from the 1940s through the early 1980s — and that work involved contact with Lochinvar boilers or water heaters — this article may be relevant to an asbestos exposure history.

Because Lochinvar does not have an established asbestos trust fund, compensation for asbestos-related illness would most likely be pursued through civil litigation. An experienced asbestos attorney can evaluate whether a viable civil claim exists, identify other potentially responsible parties whose asbestos trust funds may be accessible, and advise on the applicable deadlines in your state.

Exposure documentation — including employment records, union records, Social Security work histories, and coworker testimony — is central to building an asbestos claim. The earlier this documentation is gathered, the better positioned a claim typically is for evaluation and pursuit.