What The Rosenwach Group does

The Rosenwach Group is a privately held, family-controlled holding company founded in 1964 and headquartered in Astoria (Queens), New York. It operates as a conglomerate of related industrial service and product businesses primarily serving the New York City metropolitan area, with a workforce of 11-50 employees.

The group's core business centers on rooftop water towers under the Rosenwach Tank brand, an NYC market in which it has operated for roughly six decades. It has expanded into adjacent building services through wholly owned subsidiaries, including AMR Mechanical (mechanical contracting), Herbert Rose (legacy water-related brand), Coolwater Technologies (cooling and water technologies), Sitecraft (site craft services), Splashbox, and Sunnik. Several of these sub-brands were acquired and retained as distinct go-to-market identities, each with its own branded web presence.

Business model and revenue mechanics are not publicly disclosed. Pricing, customer segments, distribution channels, and contract structures are absent from available source data, limiting visibility into how revenue is generated across the portfolio. Operating geography is implicitly the NYC metro area based on the contact information (718 area code) and the regulatory specificity of the rooftop water tower market. No external institutional investment, public listing, certifications, patents, awards, or named customer relationships are disclosed in the source material.

Name

The Rosenwach Group

Legal name

The Rosenwach Group

Website

https://rosenwach.com

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

11–50 employees

Short description

The Rosenwach Group is a privately held NYC-based holding company founded in 1964 that operates a portfolio of seven sub-brands delivering rooftop water tower, mechanical, cooling, and related industrial services to New York metropolitan area building owners and contractors.

Ownership category

akta.pro rank

Product category

Water Storage Equipment and Mechanical Services

NAICS

Water Supply and Irrigation Systems (22131), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Water Supply (4941), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Water Storage & Conveyance Structures (Tanks, Reservoirs, Canals, Ponds) (AFAAACAH)

akta.pro secondary industry

HVAC & Refrigeration Contracting (IMAFALAB)

Keywords

• Rooftop water towers
• Water tank manufacturing
• Mechanical contracting services
• Cooling water technology
• Industrial water systems

Headquarters

HQ city

Astoria

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales

Core offering

The Rosenwach Group manufactures, supplies, and services rooftop water towers and related water-storage and water-handling equipment for commercial and multifamily buildings. Through its sub-brands it also delivers mechanical contracting, cooling and water technology systems, and site-craft installation services. Customers typically contract for the equipment, installation, and ongoing maintenance of these building water systems.

Product overview

The Rosenwach Group is a holding company comprising multiple subsidiary brands and sub-brands operating in water tank, mechanical services, cooling technology, site craft, and related industrial sectors. The portfolio includes Rosenwach Tank, Herbert Rose, AMR Mechanical, Coolwater Technologies, Sitecraft, Splashbox, and Sunnik. Each operates as a distinct sub-brand under the parent group, with individual websites for some entities.

Differentiator

Problem solved

Functional benefit

Products and services

• Rosenwach Tank Water tank products and services offered under the Rosenwach Tank brand for commercial building applications.
• Herbert Rose Products and services offered under the Herbert Rose brand within the group's water/mechanical portfolio.
• AMR Mechanical Mechanical services for building water and HVAC-related systems offered under the AMR Mechanical brand.
• Coolwater Technologies (CWT) Cooling and water technology products and services for building applications under the Coolwater Technologies brand.
• Sitecraft Site-craft services and solutions offered under the Sitecraft brand.
• Splashbox Products and services offered under the Splashbox brand.
• Sunnik Products and services offered under the Sunnik brand.

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves3 records

Expansion highlights3 records

Broad incumbents

• Trane Technologies: Major commercial and industrial HVAC equipment and services provider; relevant broad incumbent overlapping with Rosenwach Group's mechanical and cooling-technology subsidiaries.
• Snyder Industries: Manufacturer of bulk storage and water tanks serving industrial, commercial, and agricultural customers; comparable broad-incumbent storage tank producer competing in adjacent segments to Rosenwach Tank.
• Carrier: Global HVAC and building systems manufacturer; comparable as a broad incumbent whose commercial cooling and refrigeration equipment overlaps with the Coolwater Technologies and AMR Mechanical product lines.
• Norwesco: Large North American manufacturer of polyethylene and storage tanks for water, septic, and industrial uses; comparable as a broad incumbent in the water-tank manufacturing category that Rosenwach Tank participates in.

Regional players

• Petri Plumbing & Heating: NYC metro mechanical, plumbing, and HVAC contractor; comparable regional peer to AMR Mechanical on service offering and customer base in the same metropolitan market.
• American Pipe and Tank: Northeast US water tank fabricator and service company serving commercial and industrial customers; comparable to Rosenwach Tank in product line though with a broader regional rather than NYC-centric footprint.
• Hub Plumbing & Mechanical: Northeast US mechanical contracting and HVAC services firm; comparable regional peer for the AMR Mechanical side of the Rosenwach portfolio on trade and customer overlap.

Emerging players

• Bushman's Group: Mid-sized water and storage tank solutions provider with growing commercial and industrial footprint; comparable emerging player in the same broader water-storage category as Rosenwach Tank.

Direct peers

• Isseks Brothers: Long-standing New York City rooftop water tank manufacturer and service provider; directly comparable to Rosenwach Tank on product, customer base (NYC building owners and contractors), and craft-based service model.
• Ciriello & Ciriello: NYC-based water tower and water tank specialist serving the same building owner and contractor market as Rosenwach Tank, with comparable legacy positioning and service offering.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks4 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries7 records

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 The Rosenwach Group