Riello

What Riello does

Riello S.p.A. is an Italian manufacturer of heating, air conditioning, and energy management solutions, headquartered in Legnago (Verona), with operations across residential, light commercial, and industrial end-markets. The company designs and produces an integrated portfolio centered on combustion technology, including gas, oil, and dual-fuel burners (RS, RX, Gulliver, RIELLO 40, RL, and RLS series) spanning 25 kW to 3,000 kW, condensing residential boilers (START, Residence HM, Family HM, Family Externa), commercial cascade systems (CONDEXA PRO/HPR up to 1,120 kW, TAU N Premix), heat pumps (NXHM monoblock, NXHP split, Family Sprint, Domus M), hybrid heat pump plus gas systems (Adapto Hybrid, Hybrid Wall Systems), instantaneous water heaters, solar thermal systems, and IoT-enabled controls (Hi-Comfort T100 thermostat and app). The technology backbone includes patented stainless-steel condensing heat exchangers designed to reduce surface temperatures and thermal shock, ultra-low NOx burners compliant with Class 6 emissions per UNI EN 15502, hydrogen-blend-readiness up to 20% with a stated target of 100%, and Modbus/0-10V integration for building management systems. Recyclability is certified at 78–92% by the Ecoped consortium on key boiler lines.

The business model is fundamentally B2B and channel-led. Riello manufactures hardware and sells through wholly-owned branch offices in Italy, France, Germany, Spain, the UK, Canada, the US, Poland (RUG Riello Urządzenia Grzewcze S.A. — a manufacturing site with 400+ employees), Romania, Hungary, Switzerland, China (Beijing and Nanjing) and several additional markets, complemented by an extensive dealer and distributor network reaching 16+ countries. Application engineering teams sit between customers and the engineering department to deliver custom technical and commercial proposals for industrial projects. Pricing is not publicly disclosed; quotes are issued via sales representatives and distributors. Revenue streams concentrate on hardware sales of burner systems, boiler systems, and heat pump/air conditioning units across the three core customer segments: residential (home comfort), light commercial (condos, schools, hospitals), and industrial (combustion processes requiring ultra-low NOx or hydrogen/biofuel compatibility).

Riello is a wholly-owned subsidiary of Carrier Global Corporation, currently in the process of being divested to Ariston Group for approximately $430 million in expected gross proceeds, with the transaction slated to close in the first half of 2026 subject to regulatory approvals. Carrier simultaneously announced a broader restructuring including 3,000 job cuts and a strategic pivot toward data center cooling. Headcount sits in the 1,001–5,000 range, with concrete evidence of a 400+ employee manufacturing footprint at the Polish operations. Riello's competitive positioning draws on its century-long brand heritage, patented combustion technology, hydrogen-ready product roadmap, IoT connectivity via Hi-Comfort, and a multi-decade distribution footprint across Europe and North America.

Name

Riello

Legal name

Riello S.p.A.

Website

https://riello.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Riello is an Italian manufacturer of heating, air conditioning, and energy management solutions, producing burners, condensing boilers, heat pumps, hybrid systems, and IoT controls for residential, light commercial, and industrial markets across Europe, North America, and Asia. The company currently operates as a wholly-owned subsidiary of Carrier Global Corporation pending divestiture to Ariston Group in the first half of 2026.

Ownership category

akta.pro rank

Product category

HVAC and Heating Equipment Manufacturing

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Refrigeration & Service Industry Machinery (3580), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

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

akta.pro secondary industries

Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH), Chillers & Cooling Plant Equipment (IMAHAKAE)

Keywords

• Industrial burners
• Condensing boilers
• Heat pump systems
• HVAC equipment
• Combustion technology

Headquarters

HQ city

Legnago

HQ country

Italy

HQ region

Europe

Offices13 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Burner Sales: Riello manufactures and sells industrial and commercial burners including gas, oil, and dual fuel burners with various emission ratings. These are sold directly to industrial customers and through dealer networks.
2. Boiler Systems: Residential and commercial condensing boilers, cascade systems, and heat pump products sold through HVAC distributors and installers.
3. Heat Pumps and Air Conditioning: R32 heat pumps, hybrid systems, and air conditioning units for residential and light commercial applications.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Riello designs and manufactures heating, air conditioning, and energy management products including industrial and commercial burners (gas, oil, dual fuel), residential and commercial condensing boilers, heat pumps, hybrid systems combining heat pumps with gas heating, air conditioning units, water heaters, solar thermal systems, and IoT-connected controls. The portfolio serves residential, light commercial, and industrial markets globally through direct branch offices and a dealer/distributor network.

Product overview

Riello is a comprehensive heating, cooling, and air conditioning solutions provider offering an integrated portfolio of products across residential and commercial segments. The product range centers on combustion technology and includes: gas burners (RS, RX, Gulliver, RIELLO 40 series) for industrial and HVAC applications; residential boilers (START, RESIDENCE HM, FAMILY HM) with hydrogen-ready and condensing technologies; commercial boilers (CONDEXA PRO/HPR cascade systems, TAU, RTS/RTQ series) for large buildings; heat pumps (NXHM, NXHP, FAMILY SPRINT, DOMUS M) for renewable heating; hybrid systems combining heat pumps with gas heating; air conditioning (AARIA MONO/MULTI PLUS); water heating (Acquafun, NEXAQUA, NEXPRO ACS); solar thermal systems; and IoT-enabled controls (HI-COMFORT). Products are interconnected through shared technology platforms including hydrogen-blend readiness (up to 20%), IoT connectivity via Hi-Comfort App, Modbus integration for building automation, and cascade-ready commercial systems. The company serves residential, light commercial, and industrial markets globally.

Differentiator

Problem solved

Functional benefit

Products and services

• RS Series Burners
• RX Series Burners
• Gulliver Series Burners
• RIELLO 40 Series Burners
• Process Burners
• Residential Condensing Boilers
• CONDEXA PRO Commercial Boiler System
• CONDEXA HPR Commercial Boiler System
• TAU N PREMIX Commercial Boiler
• NXHM Heat Pumps
• NXHP Heat Pumps
• Hybrid Heating Systems
• AARIA Air Conditioning Systems
• Water Heaters
• Solar Thermal Systems
• Hydronic Terminal Units
• Hi,Comfort IoT Controls and Accessories
• Riello Array Boiler

Quantifiable outcome

• Condensing boilers achieve up to 92% theoretical recyclability index certified by Ecoped
• +3 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature5 records

Partnerships

One partnership is on record.

• Ariston GroupmajorStrategic or Co-development Partner · 16 December 2025Carrier Global Corporation announced agreement to sell its Riello business to Ariston Group for approximately $430 million in gross proceeds. Transaction expected to close during first half of 2026 subject to regulatory approvals. Carrier plans to use proceeds for share repurchases and general corporate purposes. This represents a major ownership transition for Riello.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Bosch Thermotechnology: Bosch Thermotechnology manufactures residential and commercial heating boilers, heat pumps, and hybrid systems across Europe and globally. Closely comparable product portfolio to Riello's residential and light-commercial condensing boilers and hybrid heat-pump/gas systems.
• Viessmann Climate Solutions: Viessmann is a German manufacturer of condensing boilers, heat pumps, and industrial/commercial heating systems across Europe. Direct competitor with overlapping product range in residential boilers, commercial cascade systems, and heat pumps.
• Vaillant Group: Vaillant is a leading European heating manufacturer of gas condensing boilers, heat pumps, and hybrid systems serving residential and commercial segments. Direct peer with similar channel-led distribution and EU regulatory exposure.
• Weishaupt: Max Weishaupt GmbH is a German manufacturer of industrial and commercial oil/gas burners with double-digit MW ranges. Directly comparable to Riello's RS, RX, and Gulliver burner series serving industrial customers.
• Ferroli: Ferroli is an Italian-headquartered manufacturer of residential and commercial boilers, burners, and air conditioning with strong Southern European presence. Closely comparable to Riello as another Italian heating/HVAC OEM with overlapping product line.
• Immergas: Immergas is an Italian manufacturer of gas condensing boilers, heat pumps, and hybrid systems for residential and light commercial. Comparable Italian peer with similar product mix and Mediterranean market focus.
• Baxi (part of Carrier/BDR Thermea Group): Baxi manufactures residential and commercial heating solutions including condensing boilers and heat pumps in the UK and Europe. Direct competitor in residential and light-commercial boilers with comparable channel-led distribution.
• Bentone (Enertech Group): Bentone is a Swedish manufacturer of industrial and commercial burners for heating and process applications. Directly comparable to Riello's burner product lines for industrial and light-commercial customers.
• Ariston Group: Ariston Group is an Italian global manufacturer of heating and hot water products — condensing boilers, heat pumps, and hybrid systems. Now announced as Riello's acquirer; highly comparable portfolio prior to integration.

Broad incumbents

• Daikin Europe: Daikin is the global HVAC incumbent with strong European heat pump portfolio, residential and commercial cooling/heating. Overlaps with Riello's heat pump and AC lines but operates at vastly larger scale and broader category.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/riello-global

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries14 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 Riello