Verified Nov 2026
Electronics & Software
·
Legnago, Veneto
·
Since 1922
Riello is an Italian manufacturer of heating, cooling, and energy efficiency systems, with a focus on combustion technology and burners that run on natural gas, green hydrogen, and biofuels. The company is headquartered in Legnago, Veneto, Italy, and was founded in 1922. It has an estimated 1,000-5,000 employees and an estimated annual revenue of $250-500M, and it serves the construction, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In December 2025, Ariston Group acquired 100% of Riello, which returned the company to Italian ownership after its previous parent, Carrier Global Corporation.
Riello at a glance
Revenue
$250-500M
Est. band
Employees
1,000-5,000
Founded
1922
Headquarters
Legnago, Veneto
Certifications
ISO 9001
Import activity
10
Industries
Automotive
Electric Vehicles
Electronics
Construction
Renewable Energy
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
10
Named foreign suppliers
3
Top origins
Italy · Poland
Shared foreign counterparties do not establish that these companies buy from Riello.
What this tells a buyer
Riello's recent public record centers on its December 2025 acquisition by Ariston Group, which Carrier Global Corporation announced as a sale of the business, and no customs or trade shipment data was found for the company.
Riello lists ISO 9001 certification and offers high-efficiency boilers, air conditioning systems, and combustion solutions, with product lines spanning electronics, emissions, and steel-based assemblies.
Riello operates as a privately held company with an estimated revenue band of $250-500M, and its serves include the construction, automotive, and renewable-energy industries.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
104 years in operation (founded 1922).
Holds ISO 9001 certification(s) per public sources.
Overview
Riello is an Italian manufacturer of heating, cooling, and energy efficiency systems, with a focus on combustion technology and burners that run on natural gas, green hydrogen, and biofuels. The company is headquartered in Legnago, Veneto, Italy, and was founded in 1922. It has an estimated 1,000-5,000 employees and an estimated annual revenue of $250-500M, and it serves the construction, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In December 2025, Ariston Group acquired 100% of Riello, which returned the company to Italian ownership after its previous parent, Carrier Global Corporation.
At a glance
Attribute | Detail |
|---|---|
Founded | 1922 |
Headquarters | Legnago, Veneto |
Employees | 1,000-5,000 |
Revenue | $250-500M (estimated) |
Primary capability | Electronics & Software |
Certifications | ISO 9001 |
What Riello makes
Riello lists ISO 9001 certification and offers high-efficiency boilers, air conditioning systems, and combustion solutions, with product lines spanning electronics, emissions, and steel-based assemblies.
Products and capabilities described on the company's own site include Assembly, Emissions, Electronics, Steel (source: riello.com).
Certifications
Riello is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — riello.com
Trade and customs footprint
Riello's recent public record centers on its December 2025 acquisition by Ariston Group, which Carrier Global Corporation announced as a sale of the business, and no customs or trade shipment data was found for the company. US customs bill-of-lading records list 10 inbound shipments across 3 foreign suppliers, with top origins including Italy · Poland.
Latest developments
2026-09-29 — News (riello-ups.com)
2025-12-17 — Ariston acquisisce il 100% di Riello Group (energiamercato.it)
2025-12-16 — Carrier Global Corporation - Carrier Announces Agreement to Sell Riello to Ariston Group (carrier.com)
2025-12-16 — Ariston acquires 100% of Riello, which becomes Italian again - Il Sole 24 ORE (ilsole24ore.com)
2025-09-03 — Uninterrupted Power Supply (UPS) unit support - UKSpending (ukspending.com)
Company details
Riello operates as a privately held company with an estimated revenue band of $250-500M, and its serves include the construction, automotive, and renewable-energy industries. Riello was founded in 1922, has an estimated 1,000-5,000 employees, and is headquartered in Legnago, Veneto. On the LightSource stability read it is rated "Established & active": 104 years in operation (founded 1922). Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Riello make?
Riello is an Italian manufacturer of heating, cooling, and energy efficiency systems, with a focus on combustion technology and burners that run on natural gas, green hydrogen, and biofuels. The company is headquartered in Legnago, Veneto, Italy, and was founded in 1922. It has an estimated 1,000-5,000 employees and an estimated annual revenue of $250-500M, and it serves the construction, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In December 2025, Ariston Group acquired 100% of Riello, which returned the company to Italian ownership after its previous parent, Carrier Global Corporation.
Where is Riello headquartered?
Riello is headquartered in Legnago, Veneto (7 Via Ing. Pilade Riello, Legnago, Veneto, 37045).
When was Riello founded?
Riello was founded in 1922.
How big is Riello?
Riello has an estimated 1,000-5,000 employees, with revenue in the $250-500M range (estimated).
What certifications does Riello hold?
Riello lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Riello import from overseas suppliers?
US customs bill-of-lading records show 10 inbound shipments for Riello, with top origins including Italy · Poland.
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Last verified Nov 2026. Is this your company? Request a correction.
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