Verified Nov 2026
Thermal & Fluid Systems
·
West Warwick, Rhode Island
·
Since 1946
Amtrol is a manufacturer of expansion and pressure control products for water systems and HVAC applications, headquartered in West Warwick, Rhode Island. Founded in 1946, it employs an estimated 100-200 people with estimated revenue of $250-500M. The company is privately held and serves automotive, plumbing-hardware, renewable-energy, and industrial-equipment markets. Its product range includes hydronic and thermal expansion tanks, pre-pressurized well tanks, and water treatment systems. In June 2026, Amtrol and Alfa, a Galp company, introduced low-carbon LPG cylinders to the Portuguese market.
Amtrol at a glance
Revenue
$250-500M
Est. band
Employees
100-200
Founded
1946
Headquarters
West Warwick, Rhode Island
Certifications
ISO 9001
Import activity
162
Industries
Automotive
Plumbing & Hardware
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
162
Named foreign suppliers
16
Top origins
Portugal · Taiwan · China · Italy
Shared foreign counterparties do not establish that these companies buy from Amtrol.
What this tells a buyer
Amtrol's recent activity includes a published 3%-7% price increase effective September 1, 2026, and the launch of an ASME commercial hot water buffer tank in May 2026.
The company holds ISO 9001 certification and manufactures facilities across Rhode Island, Maryland, Kentucky, and Portugal, producing items such as expansion tanks, well tanks, and indirect-fired water heaters.
Amtrol is privately held, with an estimated annual revenue band of $250-500M, and in June 2026 it announced membership in the Open Compute Project.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
80 years in operation (founded 1946).
Holds ISO 9001 certification(s) per public sources.
Overview
Amtrol is a manufacturer of expansion and pressure control products for water systems and HVAC applications, headquartered in West Warwick, Rhode Island. Founded in 1946, it employs an estimated 100-200 people with estimated revenue of $250-500M. The company is privately held and serves automotive, plumbing-hardware, renewable-energy, and industrial-equipment markets. Its product range includes hydronic and thermal expansion tanks, pre-pressurized well tanks, and water treatment systems. In June 2026, Amtrol and Alfa, a Galp company, introduced low-carbon LPG cylinders to the Portuguese market.
At a glance
Attribute | Detail |
|---|---|
Founded | 1946 |
Headquarters | West Warwick, Rhode Island |
Employees | 100-200 |
Revenue | $250-500M (estimated) |
Primary capability | Thermal & Fluid Systems |
Certifications | ISO 9001 |
What Amtrol makes
The company holds ISO 9001 certification and manufactures facilities across Rhode Island, Maryland, Kentucky, and Portugal, producing items such as expansion tanks, well tanks, and indirect-fired water heaters.
Products and capabilities described on the company's own site include Pump, Steel (source: amtrol.com).
Certifications
Amtrol is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — amtrol.com
Trade and customs footprint
Amtrol's recent activity includes a published 3%-7% price increase effective September 1, 2026, and the launch of an ASME commercial hot water buffer tank in May 2026. US customs bill-of-lading records list 162 inbound shipments across 16 foreign suppliers, with top origins including Portugal · Taiwan · China · Italy.
Latest developments
2026-09-01 — Amtrol September 1, 2026 3%-7% Price Increase | Bartle & Gibson Wholesale (bartlegibson.com)
2026-06-11 — Amtrol-Alfa, Galp introduce low-carbon LPG cylinders to Portuguese market - LP Gas (lpgasmagazine.com)
2026-06-09 — Amtrol is excited to share that we are now a member of the Open Compute Project (OCP)! Being part of OCP provides an opportunity to collaborate with industry leaders who are driving … (linkedin.com)
2026-05-12 — 80th Anniversary - Amtrol (amtrol.com)
2026-05-09 — Amtrol launched it’s ASME Commercial Hot Water Buffer Tank (linkedin.com)
2026-01-07 — The New Amtrol Pressuriser Plus pressure boosting system features a new, streamlined single pump solution to increase water pressure for single and multi-family dwellings. The pump, mechanical pressure switch and tank are … | Amtrol (linkedin.com)
Facilities
Amtrol is headquartered in West Warwick, Rhode Island. Public sources also reference these locations:
Rhode Island — amtrol.com
Company details
Amtrol is privately held, with an estimated annual revenue band of $250-500M, and in June 2026 it announced membership in the Open Compute Project. Amtrol was founded in 1946, has an estimated 100-200 employees, and is headquartered in West Warwick, Rhode Island. On the LightSource stability read it is rated "Established & active": 80 years in operation (founded 1946). Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Amtrol make?
Amtrol is a manufacturer of expansion and pressure control products for water systems and HVAC applications, headquartered in West Warwick, Rhode Island. Founded in 1946, it employs an estimated 100-200 people with estimated revenue of $250-500M. The company is privately held and serves automotive, plumbing-hardware, renewable-energy, and industrial-equipment markets. Its product range includes hydronic and thermal expansion tanks, pre-pressurized well tanks, and water treatment systems. In June 2026, Amtrol and Alfa, a Galp company, introduced low-carbon LPG cylinders to the Portuguese market.
Where is Amtrol headquartered?
Amtrol is headquartered in West Warwick, Rhode Island (1400 Division Road, West Warwick, Rhode Island, 02893).
When was Amtrol founded?
Amtrol was founded in 1946.
How big is Amtrol?
Amtrol has an estimated 100-200 employees, with revenue in the $250-500M range (estimated).
What certifications does Amtrol hold?
Amtrol lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Amtrol import from overseas suppliers?
US customs bill-of-lading records show 162 inbound shipments for Amtrol, with top origins including Portugal · Taiwan · China · Italy.
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Last verified Nov 2026. Is this your company? Request a correction.
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