Robur

What Robur does

Robur is a privately-held Italian manufacturer of heating and cooling technology products, founded in 1956 and headquartered in Verdellino/Zingonia (Bergamo), Italy, operating under parent holding company Fin Robur S.r.l. The company produces gas absorption heat pumps (GAHP), electric heat pumps, gas unit heaters, condensing boilers, absorption chillers, evaporative coolers, gas-fired convectors, and air curtains organized across three product lines: the Abso Line (flagship absorption technology), the Electric Line (all-electric heat pumps and hybrid systems), and the Classic Line (gas-fired unit heaters and convectors). Its core technology leverages the Einstein-Szilard absorption cycle, using natural gas combined with renewable thermal energy sources (air, ground, water) to achieve efficiencies up to 174% (GUE), reduce electricity draw by up to 86%, and cut gas consumption by approximately 40% versus conventional boilers. Robur claims to have produced the world's first reversible gas absorption heat pump (GAHP AR Plus) after more than 30 years of continuous absorption technology R&D.

Robur's business model is project-based and hardware-led, selling commercial and industrial HVAC equipment through direct field sales from its Italian HQ, a wholly-owned US subsidiary (Robur Corporation, established 1991 following the Servel acquisition), and channel partners such as Pure Thermal in the UK. Pricing is quote-based and not publicly disclosed. The company targets four horizontal segments: Industrial, Commercial, Residential, and Public Buildings, with reference installations across at least 14 countries spanning education, healthcare, government, food processing, automotive, and commercial real estate end markets. Revenue streams include equipment sales (GAHP units, chillers, boilers, unit heaters), pre-assembled cascade systems (Link, GITIÉ), service and technical support, and warranty contracts. Marketing is executed via the company website, multi-language blog, social media, monthly newsletter, industry events, the Robur Academy training program, the I-Partner certified installer network, and digital advertising with online configurators for presales specification.

Name

Robur

Legal name

ROBUR S.p.A.

Website

https://robur.com

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

Robur is a privately-held Italian manufacturer founded in 1956, producing gas absorption heat pumps, electric heat pumps, gas unit heaters, chillers, and boilers. It serves industrial, commercial, residential, and public building customers globally through direct sales, a US subsidiary, and channel partners.

Ownership category

akta.pro rank

Product category

Commercial HVAC Equipment

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Chillers & Cooling Plant Equipment (IMAHAKAE)

akta.pro secondary industry

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

Keywords

• Gas absorption heat pumps
• Commercial HVAC equipment
• Absorption chillers
• Condensing boilers
• Industrial heating systems

Headquarters

HQ city

Evansville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Commercial HVAC Equipment Sales: Robur generates revenue primarily through the sale of heating and cooling equipment including gas absorption heat pumps, electric heat pumps, gas unit heaters, condensing boilers, chillers, and accessories. Products are sold through a combination of direct field sales, channel partners, and the Robur Corporation US subsidiary.
2. Service and Technical Support: Robur offers technical support, presales consulting, product literature, technical files, BIM/DWG files, and configuration tools. Service support includes 'Robur with you' (Robur con te) technical assistance program, warranty and service contracts.
3. Pre-assembled Cascade Systems: Link preassembled groups and integrated systems (GITIÉ) that combine absorption heat pumps with condensing boilers in factory-tested configurations for simplified installation.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels10 records

Core offering

Robur manufactures and sells commercial and industrial heating and cooling equipment built around three product lines: the Abso Line (gas absorption heat pumps and gas absorption chillers that combine natural gas combustion with renewable thermal energy from air, ground, or water), the Electric Line (all-electric air-to-air and air-to-water heat pumps plus dual-energy hybrid systems), and the Classic Line (condensing and standard gas unit heaters, condensing boilers, evaporative coolers, gas-fired convectors, and air curtains). Products are sold preassembled or as engineered cascades, with project-specific sizing, configuration, and field installation across industrial, commercial, residential, and public-building applications.

Product overview

Robur is a manufacturer of sustainable heating and cooling technologies organized around three distinct product lines: the Abso Line (gas absorption heat pumps and condensing boilers), the Classic Line (gas unit heaters, condensing boilers, evaporative coolers, gas-fired convectors, and air curtains), and the Electric Line (all-electric heat pumps and hybrid systems). The Abso Line is the company's flagship advanced technology line, featuring GAHP (Gas Absorption Heat Pump) products including aerothermal models (GAHP A Plus, GAHP AR Plus), geothermal models (GAHP GS Plus), and hydrothermal models (GAHP WS Plus), alongside gas absorption chillers (ACF, ACF HR), the AY Condensing boiler, cascade modules (Link), and hybrid K18 systems. The Classic Line offers traditional gas heating solutions including the Next-G and Next-R gas unit heater series, AD evaporative coolers, and Calorio M/Supercromo/TS2000 gas-fired convectors, plus R4S air curtains. The Electric Line, the newer all-electric evolution, includes the e-NextPro (air-to-air split), e-NextHydro and Robur Hydro (air-to-water heat pumps), and Robur Hybrid (dual-energy system). Together, these three lines serve industrial, commercial, residential, and public building applications across heating, cooling, and domestic hot water production needs.

Differentiator

Problem solved

Functional benefit

Brands

• Electric Line: High-efficiency all-electric heating and air conditioning systems for medium- and large-sized industrial and commercial buildings
• Abso Line
• Classic Line

Products and services

• GAHP A Plus Aerothermal gas absorption heat pump in Robur's Abso Line that combines outside air as a renewable energy source with gas-powered condensation to provide high-efficiency heating-only operation for commercial and industrial buildings.
• GAHP AR Plus Reversible aerothermal gas absorption heat pump in the Abso Line that delivers both heating and cooling from a single unit, using outside air as a renewable energy source and gas-driven operation.
• GAHP GS Plus Geothermal gas absorption heat pump in the Abso Line that uses heat stored in the ground as its renewable energy source to deliver heating and domestic hot water production at efficiencies up to 174%.
• GAHP WS Plus Hydrothermal gas absorption heat pump in the Abso Line that uses surface water or groundwater as a renewable energy source for high-efficiency heating and domestic hot water production.
• GAHP A Plus 60 Hz 60 Hz variant of the GAHP A Plus aerothermal gas absorption heat pump, intended for markets such as North America with 60 Hz electrical supply.
• GAHP AR Plus 60 Hz 60 Hz variant of the GAHP AR Plus reversible aerothermal gas absorption heat pump for heating and cooling in 60 Hz markets.
• ACF HR gas absorption chiller Gas-fired absorption chiller with heat recovery in the Abso Line, simultaneously delivering cooling and free domestic hot water heating while sharply reducing electricity consumption relative to conventional chillers.
• ACF gas absorption chiller Gas absorption chiller / thermo-chiller in the Abso Line for cooling and process applications in industrial and commercial facilities.
• AY Condensing boiler Outdoor condensing boiler in the Abso Line that produces space heating and domestic hot water up to 80°C and is typically deployed to supplement absorption heat pumps in hybrid configurations.
• Cascade modules (Link preassembled group) Factory-tested, pre-assembled cascade grouping modules that combine multiple Robur heat pumps or condensing boilers into a single integrated unit to meet larger heating, cooling, and domestic hot water loads with simplified installation.
• K18 Simplygas High-temperature gas absorption heat pump in the Abso Line that produces hot water suitable for traditional radiator systems, bridging conventional boiler and heat-pump operation.
• K18 Hybrigas Hybrid gas absorption heat pump in the Abso Line that combines heat pump and condensing boiler technology to maximize efficiency across varying load conditions in residential and light-commercial buildings.
• e-NextPro air-to-air split All-electric air-to-air split-system heat pump in the Electric Line providing heating and cooling for medium and large commercial buildings.
• e-NextHydro air-to-water system All-electric air-to-water heat pump system in the Electric Line for heating, cooling, and domestic hot water production in commercial and industrial applications.
• Robur Hydro air-to-water heat pump Air-to-water electric heat pump marketed under the Robur Hydro brand within the Electric Line, providing efficient heating and cooling for medium-to-large buildings.
• Robur Hybrid dual-energy system Dual-energy heat pump system in the Electric Line that combines electric and gas technologies for flexible, high-efficiency operation across all seasons and load conditions.
• Next-G series condensing gas unit heater Condensing gas unit heater in the Classic Line delivering thermal efficiencies up to 107%, providing fast, modular heating for workshops, commercial, and industrial spaces with reduced heat stratification.
• Next-R series gas unit heater Standard (non-condensing) gas unit heater in the Classic Line for efficient, immediate, and modular heating of industrial, public, and commercial buildings.
• AD evaporative cooler Evaporative cooling system in the Classic Line that enhances summer comfort in work environments and provides low-operating-cost cooling for medium-to-large buildings.
• Calorio M modulating gas-fired convector Modulating gas-fired convector in the Classic Line providing supplemental space heating, operating instantly even without electricity, and suitable for irregular-use spaces.
• Supercromo gas-fired convector Gas-fired convector in the Classic Line that delivers supplemental heating for residential and commercial spaces.
• TS2000 natural draught gas-fired convector Natural-draught gas-fired convector in the Classic Line for space heating in environments with irregular usage patterns.
• R4S air curtain Air curtain in the Classic Line installed above doorways and large openings of warehouses, industrial, and commercial buildings to prevent or limit infiltration of outside air.

Quantifiable outcome

• Reduces gas consumption by approximately 40% compared to conventional boilers
• +11 more outcomes

Named customers18 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered flagship and core.

• Pure ThermalflagshipChannel Partner/ Reseller/ Distributor · 21 May 2026Pure Thermal has been appointed as the UK partner for Italian manufacturer Robur, responsible for relaunching the Robur commercial gas absorption heat pump (GAHP) range in the UK market. This represents a significant channel partnership for UK market entry and distribution of transitional decarbonisation solutions for commercial applications where electrical infrastructure upgrades are costly or constrained.
• Servel CorporationcoreTechnology or Integration · 1 May 1991In May 1991, Robur acquired the gas air conditioning division of Servel Corporation, which had originally developed and manufactured absorption cooling technology based on the Einstein-Szilard patent. This acquisition provided Robur with gas absorption air conditioning technology and opened additional markets for growth including the North American market. Robur subsequently established Robur Corporation as its US trading subsidiary.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Market position

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xx.com/RoburCorp
• YouTubeyoutube.com/user/roburmovies
• Facebookfacebook.com/ROBURCorporation
• LinkedInlinkedin.com/company/roburcorporation
• Instagraminstagram.com/roburspa

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

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 Robur