Sime

What Sime does

Sime is an Italian family-owned manufacturer of heating and hot water solutions, operating since 1972 under the Menini family's control. The company designs and produces a broad product portfolio that spans hybrid systems, monobloc air-to-water heat pumps, condensing and cast iron gas/oil boilers, solar thermal collectors, storage tanks, fan coils, and Wi-Fi enabled smart controls. Its technical foundation rests on three proprietary innovations: the patented Dual-duct Technology enabling hybrid heat pump/boiler integration without an outdoor unit, the Multi Energy Manager (MEM) logic system for collaborative management of multiple energy sources, and the Active Recovery System eliminating condensation in wall-hung boilers.

The business operates a B2B go-to-market through wholly-owned distribution subsidiaries in the United Kingdom, Spain, and China, an exclusive importer and dealer network spanning over 45 countries, and a domestic Italian agent and authorized service organization comprising over 750 companies. Sime manufactures in-house at two Italian sites — a 51,000 m² main plant in Legnago with 12 production lines and an 85,000 m² cast iron foundry in San Giovanni Lupatoto with 35,000 tons annual capacity, the latter also supplying cast iron exchangers to other European heating companies. Revenue is generated primarily through hardware sales of heating equipment and a complementary stream of technical service, installation support, and maintenance delivered through authorized service centers and partner installers; pricing is quote-based and not publicly disclosed.

Customers are split horizontally between residential buildings (individual homes needing heating, cooling, and domestic hot water), commercial and professional buildings (stores, nursing homes, hotels), and the energy renovation segment replacing legacy boilers. The company holds ISO 9001, 14001, and 45001 certifications, was the first Italian boiler manufacturer to obtain CE certification for its in-house laboratory in 2001, and received the Blue Angel environmental certification in Germany in 1996.

Name

Sime

Legal name

Fonderie Sime S.p.A.

Website

https://sime.it

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

251–500 employees

Short description

Sime is an Italian family-owned manufacturer of heating, hot water, and hybrid heat pump systems, serving residential and commercial buildings across more than 45 countries through wholly-owned subsidiaries, exclusive dealers, and a 750-strong Italian service network.

Ownership category

akta.pro rank

Product category

Heating Equipment Manufacturing

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 Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

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

akta.pro secondary industries

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC), Compressors, Refrigeration Components & Condensing Units (IMADANAG)

Keywords

• Heating systems manufacturing
• Condensing boilers production
• Hybrid heat pump systems
• Solar thermal equipment
• HVAC water heaters

Headquarters

HQ city

Legnano

HQ country

Italy

HQ region

Europe

Offices5 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. Heating Equipment Sales: Sale of heating systems including hybrid systems, heat pumps, gas boilers, solar thermal products, and accessories through distribution network
2. Service and After-Sales: Technical support, repairs, and maintenance services through authorized service centers and partner installers

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels9 records

Core offering

Sime is an Italian manufacturer of residential and commercial heating systems, producing hybrid heat generators (combining heat pumps and condensing boilers), monobloc air-to-water heat pumps, wall-hung and floor-standing condensing gas boilers, oil-fired and solid fuel cast iron boilers, solar thermal collectors and storage tanks, fan coil units, water heaters, and Wi-Fi/Opentherm smart controls. Finished equipment is sold through a global distribution network of branch offices, exclusive importers, agents, and over 750 authorized service centers and partner installers, with after-sales service and technical support as a complementary offering.

Product overview

Sime is a comprehensive heating systems manufacturer offering a diverse portfolio of products for residential and commercial heating applications. The product range spans hybrid systems (including the innovative Hybrid Revolution without outdoor unit, Murelle Hybrid Split, Open Hybrid MEM, Edea Hybrid, Hybrid Wall, Kit Hybrid, and MEM Power System), heat pumps (SHP M series monobloc units, OptiFlex SHP, OptiMEM Electric), fan coil units (SFC Slim, SFC), solar thermal solutions (Sime Natural S, Easy System, SimeSol, SimePlano collectors, GI units, Termosolis controllers), gas boilers (Brava Slim HE, Mia HE, GO BF, RX E, Murelle HM Plus, Edea HM/BF, Vera EV HE, Open Solar HE, Atlantis HM, Uniqa Revolution, Vera OF), oil-fired boilers (AR, Solo HE EV, Duetto HE EV, Aqua HE Inox EV series, Estelle, Rondò), solid fuel boilers (Solida EV, Solida EV NWB), water heaters (EcoMaxi VB heat pump, Mini gas heaters, Lago electric), storage tanks (BS HP series, BS Combi HP, BS Puff, BS Fast), and smart controls (Sime Linker Plus, Sime Home, Sime Smart Plus, Sime Smart). The product portfolio also includes high power systems for boiler plants (cast iron RMG/RS series, Murelle HE R, Murelle Equipe, Alu HE, Simerac AR) and oil burners (Sime Fuel EV, G1-G2, Mack Low NOx).

Differentiator

Problem solved

Functional benefit

Products and services

• Hybrid Revolution Compact hybrid system integrating a heat pump and condensing boiler in a single wall-mounted unit, using patented dual-duct air intake/discharge without an external unit. Heat pump operates as primary source down to -7°C; intended for residential heating, cooling, and DHW.
• Murelle Hybrid Split Heat pump hybrid system for residential heating, cooling, and domestic hot water production.
• Open Hybrid MEM Hybrid system managed by MEM logic combining a condensing boiler, an air-to-water heat pump, and an optional solar thermal system.
• Edea Hybrid Hybrid heat pump system for residential heating, cooling, and domestic hot water.
• Hybrid Wall Wall-mounted hidden buffer tank for modular hybrid heating systems.
• Kit Hybrid Boiler integration device combined with a heat pump to enable a hybrid installation.
• MEM Power System Multi Energy Manager for high-power factory-made hybrid systems for commercial and large residential installations.
• SHP M HT Monobloc inverter air/water heat pump with axial fans for residential heating, cooling, and DHW.
• SHP M Pro Monobloc inverter air/water heat pump with axial fans.
• SHP M Power Monobloc inverter air/water heat pump with axial fans for higher power outputs.
• SHP M Plus HT Monobloc inverter air/water heat pump with axial fans, high-temperature variant.
• OptiFlex SHP Fully electric system consisting of an air-to-water heat pump with optional solar thermal or electric heater integration.
• OptiMEM Electric Fully electric heat pump system managed by MEM logic with optional solar thermal integration and/or electric heating elements.
• SFC Slim Slim-design fan coil unit for residential and commercial heating/cooling applications.
• SFC Fan coil unit for residential and commercial applications with a wide power range and DC brushless motors for modulating operation.
• Sime Natural S Natural circulation solar thermal system for households of 2 to 6 people.
• Sime Natural S LP Natural circulation solar thermal system with hidden boiler to reduce aesthetic impact.
• Easy System Forced circulation solar thermal system for domestic hot water production in family units.
• SimeSol Flat-plate solar collector with tank structure in naval aluminum enriched with magnesium.
• SimePlano Flat-plate solar collector with naval aluminum magnesium-enriched structure.
• GI 2C - GI 1C Pre-assembled and insulated solar units with EPP shell.
• Termosolis Solar system control unit for producing domestic hot water and contributing to the heating system.
• Brava Slim HE ErP Wall-hung condensing gas boiler, instantaneous and for central heating only.
• Mia HE Wall-hung condensing gas boiler, instantaneous and for central heating only.
• GO BF Instantaneous wall-hung gas boiler equipped with two heat exchangers.
• RX E Electronic floor-standing cast iron gas boiler for central heating only.
• Murelle HM Plus Instantaneous wall-hung condensing gas boiler with high-technology controls, heating only.
• Edea HM Wall-hung condensing gas boiler, instantaneous and for central heating only.
• Edea BF Wall-hung standard instantaneous gas boiler.
• Vera EV HE Wall-mounted instant condensing gas boiler.
• Open Solar HE ErP Built-in condensing gas boiler integrated with a domestic hot water storage tank.
• Atlantis HM ErP Floor-standing condensing gas boiler with DHW storage tank, also for heating-only applications.
• Uniqa Revolution Instantaneous wall-hung gas boiler with active recovery, designed to eliminate condensation and comply with ErP standards for boiler replacements.
• Vera OF ErP Instantaneous wall-hung open-flue gas boiler.
• RX - RX TP Floor-standing cast iron gas boiler for central heating only.
• Sime Linker Plus Wi-Fi temperature controls for remote management of Sime heating systems.
• Sime Home Opentherm temperature controls for Sime heating systems.
• Sime Smart Plus Wi-Fi remote control for Sime heating systems.
• Sime Smart Wi-Fi environment probe for Sime heating systems.
• AR Cast iron oil-fired boiler for central heating only.
• Solo HE EV Cast iron oil-fired integrated unit for central heating only.
• Duetto HE EV Condensing cast iron oil-fired integrated unit for central heating and instantaneous domestic hot water production.
• Aqua HE Inox EV Condensing cast iron oil-fired integrated unit with domestic hot water storage tank.
• Solo EV Cast iron oil-fired integrated unit for central heating only.
• Duetto EV Cast iron oil-fired integrated unit for central heating and instantaneous domestic hot water.
• Aqua Inox EV Cast iron oil-fired integrated unit with domestic hot water storage tank.
• Estelle HE ErP Condensing cast iron oil-fired boiler for central heating only.
• Estelle HE B Inox ErP Condensing cast iron oil-fired boiler combined with a 110-liter stainless steel domestic hot water storage tank.
• Estelle ErP BE Cast iron oil-fired boiler for central heating only.
• Rondò ErP BE Cast iron oil-fired boiler for central heating only.
• Estelle B Inox ErP BE Cast iron oil-fired boiler combined with a 110-liter stainless steel domestic hot water storage tank.
• Sime Fuel EV Oil burner with low pollutant emissions for Sime boilers.
• G1-G2 Oil burner with low pollutant emissions.
• Mack Low NOx Low-NOx oil burner with low pollutant emissions.
• 1R OF Cast iron oil-fired boiler for central heating only in high-power applications.
• 2R OF Cast iron oil-fired boiler for central heating only in high-power applications.
• RMG Mk.II - RMG P Cast iron high-power boilers for commercial and industrial heating plants.
• RS Mk.II Cast iron high-power boilers for commercial and industrial heating plants.
• Murelle HE R ErP High-power wall-hung condensing gas boiler for commercial and large residential heating.
• Murelle Equipe ErP Modular system with multiple condensing generators in cascade for high-power commercial heating.
• Murelle Equipe Box ErP Modular system with multiple condensing generators in cascade for outdoor installation in commercial applications.
• Alu HE Floor-standing aluminum-silicon condensing gas boiler for central heating only in high-power applications.
• Alu Plus HE Floor-standing aluminum-silicon condensing gas boiler for central heating only in high-power applications.
• 2R HE ErP Cast iron oil-fired boiler for central heating only in high-power applications.
• Simerac AR High-efficiency free-standing pressurized steel boilers for heating only in commercial plants.
• Solida EV NWB Cast iron biomass boiler (no wood) for central heating only.
• Solida EV Cast iron biomass boiler for central heating only.
• EcoMaxi VB Heat pump water heater with domestic hot water storage tank.
• Mini BF ErP Instantaneous gas water heater with forced exhaust.
• Mini E Instantaneous gas water heater for outdoor installation.
• Mini OF VA Instantaneous gas water heater with forced exhaust.
• Lago Electric water heater with domestic hot water storage tank.
• Lago XS Electric water heater with domestic hot water storage tank (XS compact version).
• BS HP / BS HP-S / BS HP-B Domestic hot water storage tanks for heat pumps and solar systems.
• BS Combi HP-S Combined system of a dual-coil domestic hot water storage tank for heat pump/solar plus a buffer storage tank.
• BS Puff HP Buffer storage tank for heat pump installations.
• BS Puff Box Inertial buffer tank to support heat pump installations.
• BS 2S-C - BS 2S Double-coil domestic hot water storage tanks.
• BS Fast Double-coil buffer tank with a tubular heat exchanger in AISI 316 steel for rapid accumulation of domestic hot water.
• BS Puff Carbon-steel buffer accumulation tank for heating systems.

Quantifiable outcome

• 25-40% energy bill savings compared to traditional boilers
• +4 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Ariston Group: Italian-headquartered global heating and hot water manufacturer with comparable portfolio of condensing boilers, heat pumps, and hybrid systems. Closest geographic and product peer, listed on Euronext Milan.
• Vaillant Group: German family-owned heating manufacturer offering wall hung boilers, heat pumps, and hybrid solutions across Europe. Directly comparable in product mix and family-controlled governance model.
• BDR Thermea Group: European leader in smart indoor climate solutions with brands like Baxi, De Dietrich, and Remeha. Competes directly across gas boilers, heat pumps, and hybrid systems in residential and commercial segments.
• Viessmann Climate Solutions: German family-owned manufacturer of heating, industrial, and refrigeration systems with strong presence in condensing boilers, heat pumps, and hybrid solutions for residential and commercial markets.
• Ferroli Group: Italian heating manufacturer with comparable product range in wall hung boilers, floor standing cast iron boilers, and heat pumps. Direct competitor in the Italian residential and commercial heating market.
• Immergas: Italian manufacturer specializing in gas condensing boilers and increasingly heat pumps and hybrid systems. Comparable mid-sized family-owned competitor focused on residential heating in Italy and Southern Europe.
• Fondital: Italian aluminum and cast iron heating manufacturer with comparable portfolio of condensing boilers, radiators, and heat pumps. Direct competitor in Italian and Southern European residential markets.

Broad incumbents

• Bosch Thermotechnology: Division of Bosch offering comprehensive heating and hot water solutions including heat pumps, condensing boilers, and hybrid systems under brands like Worcester and Buderus. Larger scale and broader portfolio than Sime.
• Daikin Europe: Global HVAC leader with strong heat pump portfolio (Daikin Altherma) and growing presence in European residential heating. Larger player with broader scope including air conditioning and ventilation.

Regional players

• Worlitzer (Bosch subsidiary): Spanish heating manufacturer (part of Bosch) competing in Iberian markets where Sime operates via Sime Hispania. Comparable in residential boiler and heat pump offerings for Spanish-speaking markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCUexMN4kDyLIIt7XDgShEBw
• Facebookfacebook.com/61560575701569
• LinkedInlinkedin.com/company/sime
• Instagraminstagram.com/simeitalia

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 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 Sime