What Ajax Boiler Inc. does

Ajax Boiler Inc., operating commercially as Ace Heaters, LLC, is a privately held U.S. manufacturer of commercial and industrial boilers and water heating systems, tracing its origins to 1919 and headquartered in Corona, California (with a related Santa Ana, CA location referenced in firmographics). The company designs and produces a broad portfolio of heating equipment sold under the Ajax, Ace, and Atlas brands, organized into indirect-fired water heaters (Mini-Pack semi-instantaneous units, Mega-Pack packaged storage, Anchor HX heat exchangers, S-Series ASME storage tanks and calorifiers, Unfired Steam Generators PSB for clean/process steam), gas-fired water heaters and boilers (B Series atmospheric, Ajax E Series and Liberty Series high-efficiency condensing), and replacement tube bundles in copper and titanium. Underlying technology centers on commercial condensing boiler and heat-exchanger engineering, including high turndown ratios (up to 9:1) for energy efficiency, austenitic stainless steel and copper construction, removable tube bundle designs, and non-proprietary parts selection to ease maintenance.

The company sells to enterprise customers across healthcare (hospitals requiring 24/7 high-volume hot water and clean steam for sterilization), commercial and institutional buildings (offices, schools, hotels), and industrial/research facilities needing high-purity steam. Revenue is generated through one-time equipment sales of customized heating solutions, priced via quote-based, multi-year contract terms rather than published pricing. Go-to-market is sales-led: a corporate direct sales team handles complex custom quotes, while a distributed network of regional sales representatives (supported by a 'Rep Lounge' portal and public 'Find a Rep' locator) covers the broader North American commercial market. Marketing is content-driven through educational web articles targeting commercial and industrial buyers. No revenue, headcount, ownership, or financial disclosure is available; the company appears actively operating but is structurally opaque as a privately held LLC with no disclosed parent company, institutional investors, or M&A activity.

Name

Ajax Boiler Inc.

Legal name

Ace Heaters, LLC

Website

https://ajaxboiler.com

Company type

Private

Founded year

1919

Operating status

Operating

Short description

Ajax Boiler Inc. (Ace Heaters, LLC) is a privately held U.S. manufacturer, founded in 1919, that designs and builds commercial and industrial boilers, water heaters, and clean-steam generators sold under Ajax, Ace, and Atlas brands to healthcare, institutional, and industrial customers via a regional sales rep network.

Ownership category

akta.pro rank

Product category

Commercial Boilers and Water Heaters

NAICS

Power Boiler and Heat Exchanger Manufacturing (33241), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433), Fabricated Plate Work (Boiler Shops) (3443), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD), Industrial Boilers, HRSGs & Steam Generators (IMAHAFAF)

Keywords

• Commercial boilers
• Commercial water heaters
• Condensing boilers
• Industrial steam generators
• Heat exchangers

Headquarters

HQ city

Santa Ana

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Commercial Water Heater Sales: Sale of commercial water heaters including indirect water heaters, gas-fired units, and packaged storage systems to commercial and institutional customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Ajax Boiler Inc., operating as Ace Heaters, designs and manufactures commercial and industrial boilers and water heating systems sold under the Ajax, Ace, and Atlas brands. The portfolio includes high-efficiency condensing boilers and water heaters, semi-instantaneous heat exchangers, packaged storage water heaters, ASME potable water storage tanks, atmospheric gas-fired units, and unfired steam generators used for potable hot water, space heating, medical sterilization, humidification, and research steam applications.

Product overview

Ace Heaters is a commercial water heater and boiler manufacturer offering a portfolio of interconnected heating solutions. The product lineup centers on the Ajax E Series and Liberty Series high-efficiency condensing boilers and water heaters, complemented by the Mini-Pack semi-instantaneous and Mega-Pack packaged storage water heaters for indirect heating applications. Additional offerings include the Anchor HX heat exchanger and tube bundles (with copper and titanium options), S-Series ASME storage tanks and calorifiers, B Series atmospheric gas-fired units, and Unfired Steam Generators PSB for clean steam generation in medical and research settings. Products feature non-proprietary parts for easy maintenance and are engineered for commercial, institutional, and industrial facilities including hospitals.

Differentiator

Problem solved

Functional benefit

Brands

• Ajax E Series: High Efficiency Condensing Boiler & Water Heater product line
• Liberty Series
• Mini-Pack
• Mega-Pack
• B Series
• S-Series

Products and services

• Mini-Pack Semi-Instantaneous Heat Exchanger

Quantifiable outcome

• Up to 9:1 turndown ratio adapting to different usage scenarios
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• A. O. Smith: Global water heater and boiler manufacturer with a large commercial water heating portfolio (Cyclone, BFC, Master-Fit). Overlaps directly with Ace's commercial water heater and storage product lines and benefits from greater scale, brand recognition, and distribution depth.
• Cleaver-Brooks: Established manufacturer of industrial and commercial boilers, including firetube, watertube, and condensing lines, plus a large service and parts organization. Competes with Ace on larger commercial/industrial boiler installations and through a comparable rep-driven aftermarket.
• Burnham Holdings: Parent of multiple hydronic heating brands (U.S. Boiler, Burnham, Weil-McLain, Crosby Steam) covering residential, commercial, and industrial boilers. Overlaps with Ace's hydronic boiler and commercial heating product portfolio across multiple use cases.
• Viessmann: Global manufacturer of heating, industrial and refrigeration systems, including a strong commercial condensing boiler and water heater range (Vitocrossal, Vitomax). A broad incumbent competing in the same commercial and institutional segments as Ace Heaters.

Emerging players

• Navien: Known for residential condensing combi-boilers, Navien has expanded into commercial condensing water heaters and boilers (NFB-H, NCB-H). Closely competes with Ace on high-efficiency condensing technology for institutional and light commercial use cases.

Direct peers

• Fulton Boiler Works: Specialist manufacturer of vertical tubeless boilers, hot water boilers, and steam generators for commercial and industrial applications. Comparable to Ace's industrial/commercial boiler and unfired steam generator lines sold through a rep network.
• Lochinvar: A leading US manufacturer of high-efficiency commercial boilers, water heaters, and pool heating systems, including the well-known condensing FTXL/FBN/FTC lines. Directly competes with Ajax E Series and Liberty Series in commercial condensing boiler and water heater categories sold through rep networks.
• Bradford White: US manufacturer of commercial and residential water heaters and boilers, including the eF Series and Brute series commercial units. Shares Ace's rep-distributed commercial sales motion and overlapping product types (gas-fired commercial water heaters and boilers).
• U.S. Boiler Company (Burnham Holdings): Manufacturer of residential and commercial cast-iron and condensing boilers, including the Alpine and K2 lines. Competes with Ace in commercial hot water and hydronic heating applications, particularly for institutional and light commercial buildings.
• RBI (a Watts brand): Manufacturer of high-efficiency commercial boilers and water heaters (Futera Fusion, Water heater lines) sold through a manufacturer rep network. Directly comparable condensing boiler and water heater portfolio to Ace's Ajax E Series and Liberty Series.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/ajax-boiler-inc-

Revenue estimate

Valuation estimate

Number of profiles

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 Ajax Boiler Inc.