Carrier Chiller and Absorption Refrigeration Systems

Product Description

Carrier Corporation, a subsidiary of United Technologies Corporation and one of the most prominent names in commercial and industrial climate control, manufactured chiller units and absorption refrigeration systems that were installed across a broad range of facilities throughout the twentieth century. These large-scale cooling systems were designed to regulate temperature in commercial office buildings, hospitals, universities, manufacturing plants, hotels, and industrial process facilities. Carrier’s chiller and absorption refrigeration product lines represented some of the most widely deployed mechanical cooling equipment in North American commercial construction during the mid-to-late 1900s.

Chiller systems work by removing heat from a liquid — typically water or a glycol solution — which is then circulated through air handlers and fan coil units to cool interior spaces. Absorption refrigeration systems operate on a related but distinct thermodynamic principle, using a heat source such as steam or hot water to drive a refrigerant cycle, often involving lithium bromide or ammonia as working fluids. Both system types are large, complex assemblies involving compressors, evaporators, condensers, heat exchangers, insulated piping, and associated mechanical components. The physical scale and mechanical complexity of these systems meant they required substantial insulation, gasket materials, and other thermal management components throughout their assemblies — materials that, in systems manufactured during certain decades, included asbestos-containing formulations.

Carrier chiller and absorption refrigeration systems were commonly installed in mechanical equipment rooms and central plant facilities. Their service life often extended for several decades, meaning that systems installed during the 1950s, 1960s, and 1970s frequently remained in operation — and required maintenance, repair, or eventual removal — well into the 1990s and beyond.

Asbestos Content

Litigation records document that Carrier chiller and absorption refrigeration systems incorporated asbestos-containing materials in various components during certain periods of manufacture. Plaintiffs alleged that asbestos was present in the thermal insulation applied to chiller vessels, heat exchanger casings, and associated piping systems. Insulation products used in high-heat and high-humidity environments within these systems were commonly manufactured using asbestos fibers due to their thermal resistance, durability, and moisture-resistant properties.

Litigation records further document allegations that asbestos-containing gaskets were used at flanged connections, valve assemblies, and heat exchanger joints throughout these refrigeration systems. Gasket materials in industrial and commercial HVAC equipment of this era were frequently composed of compressed asbestos fiber sheets capable of withstanding the pressures and temperature differentials involved in chiller operation.

Plaintiffs have also alleged that pipe insulation, block insulation, and fitting covers used in the installation of Carrier chiller systems contained asbestos, and that workers who performed installation, maintenance, and repair of these systems were exposed to asbestos-containing materials both from Carrier’s own equipment components and from insulation materials applied by contractors during original equipment installation.

How Workers Were Exposed

Industrial workers generally represent the primary occupational group documented in litigation involving Carrier chiller and absorption refrigeration systems. Exposure pathways were varied and depended heavily on the nature of the work being performed and the condition of existing insulation and gasket materials at the time of service.

Maintenance mechanics and refrigeration technicians who performed routine servicing of chiller units were potentially exposed when inspecting, cleaning, or replacing components. Opening insulated panels or casings on aging equipment could release friable asbestos fibers from deteriorating insulation materials. Gasket removal and replacement — a common maintenance task involving scraping old gasket material from flanged surfaces — is particularly well-documented in litigation as a source of asbestos fiber release.

Pipefitters and insulation workers who installed or repaired the piping systems connected to Carrier chillers were exposed during the application, cutting, or removal of asbestos-containing pipe insulation. These workers often operated in confined mechanical rooms where airborne fiber concentrations could accumulate without adequate ventilation.

Building engineers and stationary engineers responsible for operating and maintaining large central plant equipment were also present in mechanical spaces where Carrier chiller and absorption refrigeration systems were housed. These workers were frequently in proximity to aging, deteriorating asbestos insulation on a daily basis over the course of their careers.

During the renovation, decommissioning, or replacement of older Carrier chiller systems, demolition contractors, HVAC technicians, and laborers involved in equipment removal were potentially exposed to asbestos dust released from disturbed insulation and gasket materials. The abatement of large chiller systems has been subject to AHERA and OSHA regulatory requirements governing the identification and safe handling of asbestos-containing materials in building systems.

Workers in industries that operated large industrial process facilities — including chemical plants, refineries, power generation facilities, and large institutional settings — were among those most likely to have worked in proximity to this type of equipment over extended periods of time, increasing the potential for cumulative asbestos exposure.

Documented Trust Fund / Legal Options

Carrier Corporation is a Tier 2 product for purposes of asbestos liability — meaning that claims involving Carrier chiller and absorption refrigeration systems are pursued through active civil litigation rather than through a pre-established asbestos bankruptcy trust fund. Carrier Corporation has not filed for asbestos-related bankruptcy, and no dedicated Carrier asbestos trust fund exists at the time of this writing.

Litigation records document that plaintiffs diagnosed with asbestos-related diseases — including mesothelioma, asbestos-related lung cancer, asbestosis, and pleural disease — have brought civil claims against Carrier Corporation alleging that the company’s chiller and refrigeration equipment contained asbestos-containing components and that the company knew or should have known of the associated health hazards. Plaintiffs alleged that Carrier failed to adequately warn workers and end users about the presence of asbestos in its equipment and the risks of fiber release during maintenance and repair.

Individuals who believe they were exposed to asbestos through contact with Carrier chiller or absorption refrigeration systems should consult with an attorney experienced in asbestos litigation. A qualified attorney can evaluate the relevant work history, identify applicable defendants — which may include equipment manufacturers, insulation product manufacturers, and premises owners in addition to Carrier — and assess whether viable claims exist under applicable state statutes of limitations.

Because Carrier systems were typically installed using insulation and gasket products manufactured by third parties, asbestos claims arising from this equipment may also support recovery through existing asbestos bankruptcy trust funds administered by former manufacturers of insulation products such as pipe covering, block insulation, and gasket materials. Trust fund claims may be filed concurrently with or independently of civil litigation, depending on the claimant’s exposure history and the specific products identified.

Workers and surviving family members seeking to understand their legal options should act promptly, as statutes of limitations for asbestos disease claims vary by state and generally begin to run from the date of diagnosis or the date a claimant knew or reasonably should have known of the disease’s connection to asbestos exposure.