What Cemline Corporation does

Cemline Corporation is a privately held US manufacturer of commercial and industrial liquid storage and heating equipment, headquartered in Cheswick, Pennsylvania, and operating since 1935. The company designs and builds ASME code-constructed pressure vessels, packaged water heaters (instantaneous, semi-instantaneous, storage type, plate, and feed-forward variants), unfired steam generators, cement-lined and jacketed storage tanks, thermal energy storage tanks, buffer tanks, air separators, non-electric condensate pumps, heat recovery systems, replacement tube bundles, and electronic controllers. Its core technology platform rests on proprietary STONESTEEL hydraulic cement lining (patented 1936) for corrosion protection in steel tanks and a suite of solid-state controllers (CEM-TROL II, STEAM-TROL, Boiler-Trol) with MODBUS RTU and BACnet building automation integration.

The company serves commercial and institutional buildings (hotels, hospitals, schools, military/correctional facilities), industrial processes (food, pharmaceutical, clean rooms), data centers (chilled water buffering and thermal storage for mission-critical cooling), and renewable energy/heat pump integrations. Products are custom engineered to customer specifications (capacity, pressure ratings from 0–500 psig, materials, controls) and sold via a quote-based B2B model through a network of nearly 100 factory sales representatives across the United States, supplemented by a direct sales team at headquarters. Revenue is generated primarily through one-time equipment sales of capital apparatus, with ongoing aftermarket revenue from exact-fit replacement tube bundles, controls, and system accessories.

The business is differentiated by regulatory certifications (ASME, National Board registration, UL listing), nearly 90 years of continuous manufacturing at a single US facility with certified welders, proprietary cement-lining IP backed by a 5-year non-prorated warranty, and a deep installed base that drives recurring replacement-parts revenue. Management has recently positioned the company around decarbonization (electric boilers, electric and dual energy source water heaters) and data-center thermal storage, alongside established commercial/industrial heating incumbencies.

Name

Cemline Corporation

Legal name

Cemline Corporation

Website

https://cemline.com

Company type

Private

Founded year

1935

Operating status

Operating

Headcount range

101–250 employees

Short description

Cemline Corporation, founded 1935 and headquartered in Cheswick, Pennsylvania, manufactures ASME-certified commercial and industrial pressure vessels, packaged water heaters, unfired steam generators, thermal storage tanks, and electronic controls, serving commercial buildings, institutions, industrial processes, and data centers across the United States via a network of nearly 100 factory representatives.

Ownership category

akta.pro rank

Product category

Commercial and Industrial Water Heating and Pressure Vessel Equipment

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Pump and Compressor Manufacturing (33391), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Pumps & Pumping Equipment (3561), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Pressure Vessels, Columns & Storage Tanks (ASME/Process Vessels) (IMAHAEAF)

akta.pro secondary industry

Pump & Compressor Packages (Skids, Booster Sets) (IMAHANAG)

Keywords

• Commercial water heaters
• ASME pressure vessels
• Unfired steam generators
• Thermal energy storage tanks
• Heat exchangers and boilers

Headquarters

HQ city

Cheswick

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Industrial Water Heaters: Manufacture and sale of commercial and industrial water heaters including instantaneous (SEH), semi-instantaneous (SSH), storage type (SWH), storage plate (SPH), plate heaters (BPH/PFH), feed forward (FFH), commercial electric (EHB), and solar water heaters. Revenue from equipment sales with custom configuration based on specifications.
2. Unfired Steam Generators: ASME code-constructed unfired steam generators producing clean steam from boiler steam or high temperature hot water for humidification, sterilizers, food processing, pharmaceutical, and clean room applications.
3. Cement Lined Storage Tanks: STONESTEEL cement-lined storage tanks for hot water storage with 5-year non-prorated guarantee. Available in vertical and horizontal configurations with working pressures from 1 to 500 psig.
4. Jacketed Storage Tanks: Factory insulated storage tanks combining STONESTEEL corrosion resistance with fiberglass insulation and steel jacket, for storing hot water at pressures up to 125 psig.
5. Commercial Electric Boilers: Electric hot water boilers for hydronic heating systems and process heating, furnished as complete factory package with ASME vessels, electric elements, and controls.
6. Thermal Energy Storage Tanks: Tanks for storing thermal energy from renewable or non-renewable sources for data centers and mission critical applications, providing buffer cooling during primary system failures.
7. Boiler Blow Down Tanks: Centrifugal blow-off/condensate coolers receiving blow down from steam boilers, flashing to steam and cooling condensate before drain discharge.
8. Replacement Tube Bundles: Exact replacement tube bundles for existing water heaters and heat exchangers with standard 1-week shipment, for steam, boiler water, and high temperature hot water applications.
9. Replacement Parts and Accessories: Replacement tube bundles, controls, heat exchangers, and system components for existing installations. Ongoing revenue from parts replacement and system upgrades.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Cemline Corporation designs and manufactures ASME code-constructed commercial and industrial water heaters, unfired steam generators, cement-lined and steel storage tanks, commercial electric boilers, heat exchangers, thermal energy storage tanks, buffer tanks, air separators, condensate pumps, and replacement tube bundles. Products are custom-engineered to customer specifications and sold through a U.S. factory representative network with quote-based pricing for plumbing, HVAC, data center, industrial, and renewable-energy applications.

Product overview

Cemline Corporation manufactures an extensive portfolio of commercial and industrial heating equipment for plumbing, HVAC, and industrial process applications. The product line centers on water heating solutions including instantaneous, semi-instantaneous, storage type, and plate water heaters in various energy configurations (steam, boiler water, electric, and solar). Key proprietary technologies include STONESTEEL cement lining for corrosion protection in storage tanks and water heaters, and the CEM-TROL II/STEAM-TROL solid state control systems. Supporting products include unfired steam generators, thermal energy storage tanks, buffer tanks, air separators, condensate pumps, heat recovery systems, and replacement tube bundles. The company serves data center, commercial, institutional, and industrial markets with ASME code constructed, National Board registered pressure vessels and packaged units, all manufactured in the USA since 1935.

Differentiator

Problem solved

Functional benefit

Brands

• STONESTEEL: Proprietary hydraulic cement tank lining technology that prevents rust and corrosion common with steel tanks. Originally patented by CEMLINE in the 1930s.
• CEM-TROL II
• STEAM-TROL
• Boiler-Trol

Products and services

• Stainless Steel Instantaneous Packaged Water Heater (SEH) Compact water heater producing high water volumes with temperature control of +/-4 degrees F at fluctuating building loads, using 30, 45, or 60 gallon 316-L stainless steel vessels for commercial and institutional applications.
• Stainless Steel Compact Semi-Instantaneous Packaged Water Heaters (SSH) Compact semi-instantaneous water heaters with 316-L stainless steel vessels, 3-inch fiberglass insulation, and U-bend heating coils designed for space-constrained commercial installations.
• STONESTEEL Packaged Copper Coil Water Heaters (SWH) Storage type water heaters with 100-6080 gallon storage capacities and recovery up to 24,000 gph, featuring proprietary STONESTEEL cement lining for corrosion protection and long tank life in commercial applications.
• Vertical Packaged Storage Plate Water Heaters (SPH) Storage plate water heaters for condensing or specialty hydronic boilers using plate heat exchangers to maximize heat transfer, available in 60-680 gallon capacities with heating up to 2,500,000 BTU/hr.
• Packaged Plate Water Heaters (BPH/PFH) Plate water heaters using brazed plate (BPH) or plate and frame (PFH) heat exchangers for condensing boiler applications, capable of heating up to 5,000,000 BTU/hr without a storage tank for instantaneous use.
• Steam Fired Instantaneous Feed Forward Water Heaters (FFH) Instantaneous water heaters using low pressure steam (up to 15 psig) to produce up to 120 gpm of 180 degrees F hot water, with pressure sensing blending valve for stable temperature control within an adjustable 105-180 degrees F range.
• STONESTEEL Commercial Electric Water Heaters (EHB) Factory-packaged electric water heaters with ASME vessel, STONESTEEL lining, and UL listed electric elements and controls, supplied as a complete package requiring only hot/cold water lines and power connection.
• Solar Water Heaters Dual energy source water heating units using solar energy with boiler water, steam, or electric backup, featuring solar controller, brazed plate heat exchanger, and 316-L stainless steel or STONESTEEL vessel options.
• Unfired Steam Generators (USG) ASME code-constructed steam generators producing clean steam from boiler steam or high temperature hot water, available in stainless steel or carbon steel for humidification, sterilizers, food processing, pharmaceutical, and clean room applications.
• Cement Lined Storage Tanks (CST) ASME code-constructed tanks with proprietary STONESTEEL hydraulic cement lining preventing rust and corrosion, available in 1-500 psig working pressures with stainless steel threaded openings and 12x16 inch elliptical manholes for hot water storage.
• Jacketed Storage Tanks (JST) Factory insulated storage tanks combining STONESTEEL corrosion resistance with steel strength and 3-inch fiberglass insulation, rated for 125 psig maximum working pressure with option for steam or boiler water coils.
• Commercial Electric Boilers ASME code-constructed electric boilers for hydronic heating systems and process heating, featuring incoloy sheathed removable immersion rods, solid state step controllers (Boiler-Trol), and optional BACnet interface.
• System Efficiency Buffer Tank (SEB) Primary/secondary buffer tanks preventing boiler short cycling, removing air from heating systems, and acting as hydraulic separators, available in vertical 120, 200, 300, and 500-gallon capacities with ASME rating of 125 psig at 400 degrees F.
• Chilled Water Buffer Tanks (CWB) ASME pressure vessels (125 psi at 400 degrees F) designed to add buffer volume to chilled water systems, preventing poor temperature control, erratic operation, and excessive compressor cycling in chiller applications, including data center cooling.
• Thermal Energy Storage Tanks (TES) ASME rated (125 psi at 400 degrees F) tanks for storing thermal energy from non-renewable or renewable sources, featuring internal sparge tube with diffusers for temperature stratification, used in data centers and mission critical applications.
• Tangential Air Separators (TAS) Air extraction units using tangential port design to create a vortex that separates entrained air from closed/open loop heating and cooling systems, available in carbon or stainless steel construction.
• Steel Tanks ASME code-constructed pressure vessels in carbon steel, stainless steel (304/316), or 90:10 CuproNickel, working pressures from 0-500 psig with hot dip galvanizing available for tanks up to 60 inch diameter.
• Boiler Blow Down Tanks (CBO) ASME code-constructed vessels (150 PSI working pressure) designed to receive boiler blow down, flash to steam, and cool condensate before drainage, featuring tangential inlet with stainless steel wear plate.
• Flash Tanks (FST) ASME code-constructed tanks (150 PSI working pressure) used to flash steam from high temperature condensate before introducing into low pressure lines or returning to boiler.
• Non-Electric Condensate Pumps (CCP) Condensate pumps using compressed air or steam as motive force, eliminating impellers, seals, and electricity requirements, available in springless piston or spring mechanism designs with 316 stainless steel components.
• Heat Recovery System (HRS) System recovering energy from condensate or boiler blow down through flash tank, float and thermostatic trap, and plate heat exchanger, optionally including vent condenser for flash steam recovery.
• Replacement Tube Bundles (RTB) Exact replacement tube bundles for existing water heaters and heat exchangers, designed for max 150 psig working pressure and 375 degrees F, with standard 1-week shipment and seamless copper tubes rolled into tube sheets.
• Heat Transfer Package (HTP) Complete heat exchange packages with heat exchanger, controls, and accessories supporting steam, boiler water, HTHW, or chilled water energy sources for building heat, process heat, swimming pool, snow melt, and cooling applications.
• Digital Tempering Valve (DTV) Digital temperature control valve maintaining set point within +/-2 degrees F from 0.5 gpm to full flow, conforming to ASSE 1017 with BMS communication options (BACnet, Modbus, Internet) for building management integration.

Quantifiable outcome

• STONESTEEL tanks furnished with five year non-prorated guarantee - indicating long-term durability and company confidence in product life.
• +3 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature8 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• A. O. Smith Corporation: A. O. Smith is a leading global manufacturer of residential and commercial water heaters, boilers, and water treatment products, including the Lochinvar brand of commercial boilers. It directly overlaps Cemline's commercial water heater, boiler, and storage tank lines at significantly larger scale.
• Lochinvar (an A. O. Smith brand): Lochinvar is a leading manufacturer of high-efficiency commercial boilers, water heaters, and pool heaters. Its Knight, FTXL, and Fortress commercial boiler/water heater lines compete directly with Cemline's electric boilers, water heaters, and plate heater products in the commercial hydronic market.
• Bradford White Corporation: Bradford White manufactures commercial and residential water heaters, hydronic heating products, and storage tanks in the US. Its commercial water heater and storage tank lines overlap closely with Cemline's SWH, SEH, SSH, and cement-lined tank offerings.
• HTP (Heat Transfer Products): HTP manufactures commercial and residential high-efficiency boilers, water heaters, and indirect-fired water heaters, including stainless steel modulating units. Its boiler and water heater portfolio competes head-to-head with Cemline's electric boilers and packaged water heaters.
• PVI Industries (a Watts brand): PVI Industries specializes in ASME commercial water heaters, storage tanks, and heat exchangers for commercial and institutional buildings. Its storage tank and water heater lines are direct competitors to Cemline's cement-lined and jacketed storage tanks and commercial water heater product family.
• RBI (a Mestek brand): RBI manufactures commercial and industrial hydronic heating equipment including condensing boilers, water heaters, and heat exchangers. Its commercial heating product range overlaps with Cemline's electric boilers, water heaters, and heat transfer package offerings.
• Bell & Gossett (a Xylem brand): Bell & Gossett manufactures pumps, heat exchangers, and hydronic accessories for HVAC and plumbing systems. Its heat exchanger and air separator products compete with Cemline's heat transfer packages, plate heat exchangers, and tangential air separators.
• Taco Comfort Solutions: Taco designs and manufactures pumps, tanks, heat exchangers, and controls for hydronic heating, cooling, and water heating systems. Its storage tanks, air separators, and heat exchangers directly overlap Cemline's chilled water buffer tanks, air separators, and heat transfer packages.
• Amtrol (a Caleffi brand): Amtrol manufactures pressure tanks, hydronic and plumbing accessories, and well water systems. Its pressure vessels and storage tanks overlap with Cemline's steel tanks, buffer tanks, and ASME pressure vessel products.
• Wessels Company: Wessels Company manufactures ASME pressure vessels, expansion tanks, buffer tanks, and air separators for HVAC and industrial applications. Its pressurized tank and air separation products are directly comparable to Cemline's steel tanks, system efficiency buffer tanks, and tangential air separators.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights8 records

Customer concentration

• YouTubeyoutube.com/user/CemlineCorporation
• Facebookfacebook.com/Cemline
• LinkedInlinkedin.com/company/cemline-corporation
• Xx.com/cemline

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cemline Corporation