For more than 140 years, Harris Thermal has supported diverse industries with custom-engineered process equipment designed for safety, reliability, and long-term performance.
From energy and natural resources to manufacturing and industrial production, our expertise in ASME-code fabrication, thermal design, and advanced metallurgy ensures every project meets the highest standards — whether we're building a single vessel or delivering integrated systems.
Shell-and-tube exchangers to TEMA and API 660, separators, knockout drums, columns, ASME vessels and API 620/650 tanks for upstream, midstream and refinery service — plus replacement bundles for units already running.
Explore Oil & Gas
Black-liquor evaporators, digesters, washer vessels, cyclones and TEMA exchangers for kraft and sulfite mills — and replacement exchangers, bundles and evaporator components built to existing mill interfaces.
Explore Pulp & Paper
Feedwater heaters, surface condensers, auxiliary coolers, separators and ASME balance-of-plant vessels — with replacement exchangers and tube bundles built to fit the plant during an outage window.
Explore Power Generation
Custom heat exchangers, ASME pressure vessels, and buffer and thermal storage tanks for the facility side of data center cooling systems — fabricated to your process conditions, codes, and site constraints.
Explore Data Centers
Falling-film and forced-circulation evaporators, crystallizers, brine concentration equipment and high-alloy vessels for zero liquid discharge, desalination, wastewater reuse and high-purity process water.
Explore Water Treatment / Desalination
Custom fry oil heaters, blanching exchangers, falling-film evaporators, crystallizers, condensers and ASME vessels for continuous food production.
Explore Food Processing
Juice heaters, shell-and-tube exchangers, evaporators, crystallizers, flash tanks, columns, vessels and tanks for sugar production and refining — including replacement equipment for existing facilities.
Explore Sugar Processing
Autoclaves and pressure-leach vessels for gold, copper and nickel refining, plus evaporators and crystallizers for lithium brine concentration, heat exchangers, cyclones and heavy-wall ASME vessels.
Explore Mining & Minerals
Formaldehyde converters and reactors, absorber columns, scrubbers, condensers, evaporators and ASME vessels — fabricated to the process design your technology and specification define.
Explore Formaldehyde & Resins
Tubular, fixed-bed and jacketed reactors, distillation columns with reboilers and condensers, adsorbers, evaporators and ASME vessels — in high alloys and clad construction for aggressive service.
Explore Chemical
Absorber and scrubber columns, separators and knockout drums, shell-and-tube exchangers and shop-fabricated ASME vessels and tanks for gas treatment, liquefaction and low-temperature process service.
Explore Liquefied Natural Gas
NQA-1 quality program fabrication for DOE contractors, utilities, SMR developers, and nuclear EPCs — heat exchangers, ASME vessels, and custom thermal equipment with full material traceability and documentation.
Explore Nuclear
One-off replacement equipment and new capital projects that do not fit a named vertical — custom exchangers, ASME vessels, tanks, evaporators and specialty-alloy or clad fabrication built to drawing.
Explore General ManufacturingHeat exchangers, vessels, tanks, evaporators, condensers, crystallizers, columns, and specialty equipment.
Materials, welding, forming, machining, testing, inspection, and heavy fabrication.
Technical articles covering heat transfer, materials, pressure equipment, cooling, evaporation, ZLD, nuclear quality, and other engineering topics.
If your process needs heat transfer, pressure containment, or custom fabrication, we can build it. Tell us what you're working on.