LINUO RITTER

What LINUO RITTER does

Linuo Ritter International Co., Ltd. is a privately-held Sino-German joint venture founded in 2001 between China's Linuo Group and Germany's Paradigma GmbH, headquartered in Jinan, Shandong. The company designs, manufactures, and sells heat pumps, solar thermal collectors, photovoltaic modules, and energy storage systems for residential, commercial, and industrial customers. Its technology base centers on air source heat pump systems using R290 natural refrigerant (GWP=3), DC inverter compressors, and a multi-grade heat energy supply architecture spanning residential heating through 180°C industrial steam generation. The company also produces flat plate and evacuated tube solar collectors, bifacial PV modules, lithium iron phosphate (LiFePO4) battery storage, and hybrid inverters, with OEM/ODM customization for brand partners.

Linuo Ritter's manufacturing infrastructure includes a Heat Pump Smart Factory (7,000 sqm, 100,000 unit annual capacity, operational since September 2024) and what the company describes as the world's first solar-powered lights-out factory for solar collectors (operational since May 2025). It holds 700+ patents and has won two National Science and Technology Progress Awards (2009 for building-integrated solar, 2024 for multi-grade heat supply). The company generates revenue through B2B hardware sales to distributors, contractors, and project developers, with OEM/ODM services for brand customers; pricing is quote-based with factory-direct bulk terms. Approximately 85%+ of sales volume is to the domestic Chinese market, with subsidiaries in the US, Germany, Switzerland, India, Pakistan, and Romania supporting distribution across 70+ countries.

Name

LINUO RITTER

Legal name

Linuo Ritter International Co., Ltd.

Website

https://linuo-ritter.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

11–50 employees

Short description

Linuo Ritter International is a Sino-German joint venture manufacturer of air source heat pumps, solar thermal collectors, photovoltaic modules, and energy storage systems, selling B2B to distributors, contractors, and brand partners across 70+ countries with a domestic-China-dominant revenue base.

Ownership category

akta.pro rank

Product category

Heat Pump and Solar Thermal Manufacturing

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers (42373)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Compressors, Refrigeration Components & Condensing Units (IMADANAG)

akta.pro secondary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

Keywords

• Air source heat pumps
• Solar water heaters
• Photovoltaic modules
• Energy storage systems
• OEM heat pump manufacturing

Headquarters

HQ city

Jinan

HQ country

China

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Pump Manufacturing and Sales: Designs, manufactures and sells air source heat pumps including residential, commercial, and industrial models. Revenue generated through direct B2B sales to distributors, contractors, and project developers worldwide.
2. Solar Thermal Systems: Manufactures and sells solar water heaters including flat plate collectors, vacuum tube collectors, and integrated solar thermal systems for residential and commercial applications.
3. Photovoltaic and Energy Storage: Produces PV modules, energy storage battery systems, and hybrid inverters for residential and commercial energy solutions.
4. OEM/ODM Customization Services: Provides custom branding, control system localization, certification alignment (CE, MCS, Keymark), and capacity/feature customization for brands and distributors.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

LINUO RITTER manufactures and globally distributes air-source heat pumps (residential monobloc units, commercial heat pumps, and industrial steam generators up to 180°C), solar thermal collectors (vacuum tube and flat plate), photovoltaic modules, hybrid inverters, and lithium iron phosphate energy storage batteries. The company sells B2B to a network of distributors, contractors, and project developers across 70+ countries, with OEM/ODM customization available for brand owners and bulk factory-direct pricing for distributors.

Product overview

Linuo Ritter is a leading manufacturer and solution provider of comprehensive solar thermal systems, air-source heat pumps, and photovoltaic modules with energy storage solutions. Established in 1995, the Sino-German joint venture operates from two major production bases with eight automated production lines (ABB and Kawasaki robotic systems) and an annual capacity of 100,000 air-source heat pumps. The company's Testing and Evaluation Center houses seven specialized laboratories, 55 test rigs, and executes 414 distinct test protocols including environmental testing from -40°C freeze chambers to +85°C heat-soak environments. The product portfolio encompasses three core technology areas: (1) Solar thermal products including HP-1820/HP-1818 evacuated tube solar collectors delivering 70-80°C output and flat plate solar collectors for commercial hot water; (2) Air source heat pumps ranging from R290 DC inverter monobloc units (8-16kW, A+++/A+++ rating) and all-in-one floor heat pumps delivering 75°C sanitary hot water with COP up to 4.5, to industrial-grade units including V-form and double-V-type EVI heat pumps delivering up to 125°C output, and waste heat recovery systems; (3) PV modules with energy storage solutions including high-voltage and low-voltage battery systems up to 16kWh capacity, and hybrid inverters. The company holds over 700 patents and maintains ISO 9001, ISO 14001, CE, and Solar Keymark certifications.

Differentiator

Problem solved

Functional benefit

Products and services

• R290 DC Inverter Monobloc Heat Pump for Heating, Cooling & Hot Water Variable frequency single-unit outdoor air source heat pump using R290 natural refrigerant (GWP=3) for residential and small commercial applications. Integrates heating, cooling, and domestic hot water in a single outdoor unit. Capacity 8-16kW, A+++/A+++ energy rating, 75°C maximum water temperature, operates down to -30°C ambient.
• R290 All-in-One Floor Heat Pump for Sanitary Hot Water Dedicated 75°C sanitary hot water heat pump with eco-friendly R290 refrigerant (GWP=3). All-in-one floor-standing design integrates heat pump and tank, saving 40% installation space. COP up to 4.5 with 70°C outlet water temperature. Smart WiFi control system with remote monitoring. For residential hot water replacement of boilers.
• 80°C V-Form DC Inverter Heat Pump Water Heater for Industrial Process Industrial heat pump water heater with V-form heat exchanger design offering 25% larger heat exchange area. R410a DC inverter technology with 1Hz variable frequency. Outputs 80°C hot water with COP 2.3-2.5. Intelligent defrosting 20% faster than traditional methods. For distillery, dyeing and food processing applications.
• 95°C Industrial Processing Double V-Type EVI Heat Pump Water Heater Industrial processing heat pump delivering 95°C ultra-high temperature output with 115kW capacity. Uses R515B eco-friendly refrigerant with double-V heat exchangers and Siemens smart control system. COP 2.11 with DC inverter plus screw-assisted technology. For food processing, distillery, electroplating, chemical and pharmaceutical applications.
• 125°C Ultra-High Temp Steam Generator for Industrial Distilling Ultra-high temperature steam generator producing 125°C steam using Copeland ZW650 compressor and R245fa refrigerant. COP 1.78-1.79 at 125°C extreme temperatures. Micro-pressure/high-pressure options. Replaces traditional boilers for carbon neutrality. For industrial distilling, food processing, electroplating, chemical and pharmaceutical applications.
• Four-Circuit Waste Heat Recovery Unit for Industrial Hot Water Industrial waste heat recovery system capturing 10-60°C waste heat to generate 85°C/95°C hot water. Four independent circuits with COP up to 5.45 (at 85°C output with R134a). Zero fuel cost operation. Intelligent shift control auto-adjusts energy loading. For food processing, dyeing, slaughterhouse, and beverage industry applications.
• 125°C Output Waste Heat Powered Steam System (Industrial) Cascade waste heat steam system delivering 125°C steam from industrial waste heat (30-90°C sources). Uses R245fa refrigerant and vortex compressor technology. COP 2.61-2.63. Maintenance-free vortex compressor design with Siemens intelligent control. For food processing, distillery, chemical plants, electroplating and pharmaceutical applications.
• 145°C Corrosion-Resistant Waste Heat Recovery Steam Heat Pump Ultra-high temperature waste heat recovery steam heat pump delivering 145°C output. Corrosion-resistant design for harsh industrial environments. Vortex compressor with maintenance-free operation. COP 2.61-2.63. For chemical plants, oil and gas, and industrial process heating requiring high-temperature steam.
• HP-1820 Vacuum Tube Solar Collector High-efficiency evacuated tube solar collector for medium-to-high temperature commercial applications. Delivers 70°C hot water output. Vacuum insulation minimizes thermal losses for consistent performance in tropical climates. Engineered for agricultural processing, sanitation, and industrial pre-heating applications.
• HP-1818 Vacuum Tube Solar Collector High-temperature evacuated tube solar collector for tropical commercial hot water applications. Delivers 80°C hot water output. Vacuum tube design minimizes thermal losses for 80°C output even during overcast tropical conditions. For hotel laundry, kitchen, and guest room hot water requirements.
• Flat Plate Solar Collector Flat plate solar thermal collector engineered for cold-climate conditions. Robust tempered glass cover and insulated aluminum casing withstand harsh winter conditions including snow load, wind, and thermal cycling. Excellent durability and cost-effectiveness for moderate-temperature hot water applications (40-60°C) typical of hotels.
• Ultra-Slim Stainless Steel Tank Water Heater for Compact Space Twin-tank electric storage water heater with ultra-thin 258mm profile. SUS 304/316 stainless steel inner tank with knob digital hybrid control. Dual voltage design (220-240V/110-120V) for global market flexibility. Ideal for compact residential and commercial applications.
• Horizontal Enamel Double Tank Electric Water Heater Horizontal flat design electric storage water heater with double enamel tank technology. Space-saving slim 295mm depth profile for low-ceiling installations. Dual inner tank structure ensures faster heating and thermal efficiency. Dual voltage compatibility (220-240V/110-120V) for global export markets.
• Vertical Wall-Mounted Storage Geyser with Smart Thermostat Freestanding wall-mounted storage water heater with smart thermostat, cylindrical enamel tank, and digital temperature control (30°C-75°C range). Dual voltage design (220-240V/110-120V). SUS 310S heating element with IPX4 waterproof protection. Ideal for homes, apartments, and commercial buildings.
• High-Voltage Residential Energy Storage Unit Five-in-one integrated architecture combining PV inverter, energy storage, EMS, power distribution and protection in IP66 outdoor-rated enclosure. Kalman filter algorithm for accurate SOC estimation. WiFi wireless communication with app remote monitoring. Available in 6kW and 8kW power ratings for residential PV+storage applications.
• 48V Low-Voltage Rack-Mount Energy Storage Battery Series Low-voltage rack-mount lithium iron phosphate (LiFePO4) battery system. Four specifications available: 5.32kWh, 10.64kWh, 15.36kWh, 16.076kWh. Cycle life ≥6000 cycles at 95% DOD. Supports parallel expansion up to 4 units (60+ kWh capacity). CAN/RS485 communication. For home energy storage and small-scale C&I applications.
• 6.2kW Low-Voltage Residential Energy Storage Integrated Machine All-in-one integrated energy storage solution combining hybrid inverter, LiFePO4 battery modules, and EMS. Rated 6.2kW output with 5.12-15.36 kWh battery capacity. MPPT efficiency 99.9%. Seamless on/off-grid switching in <10ms. Multiple AC/DC output interfaces. Multi-terminal collaborative management of PV, grid, batteries and loads.
• 3.6-12kW Off-Grid Photovoltaic Inverter Pure off-grid inverter for areas without grid access. Dual load output with priority management. Supports 1-6 units in parallel (up to 72kW). MPPT tracking with 120A PV charging. LCD display with USB/RS485/WiFi/GPRS communication. For remote areas, island/mountain microgrids, home backup power, and mobile/temporary power supply.
• 3~6kW Single-Phase Hybrid Inverter — Enhanced Smart Touch Control Version Single-phase hybrid inverter with color touchscreen display and diesel generator energy storage integration. 97.6% maximum efficiency. 125A bidirectional high current with adaptive BMS. 200% photovoltaic oversizing. IP66 protection rating. Color touchscreen for outdoor readability. Supports RS485/CAN with optional WiFi/Bluetooth/4G/LAN.
• 5~15kW Three-Phase Hybrid Grid-Connected Inverter Three-phase hybrid inverter for commercial energy storage. 48V safe voltage battery platform (≤60V max charging). 200% off-grid peak output for 15 seconds. 200% PV oversizing with full-power charging. 100% unbalanced three-phase output. IP66 protection. Supports diesel generator-storage integration for weak-grid areas.
• 575W-585W Bifacial Double-Glass Photovoltaic Module High-efficiency bifacial double-glass photovoltaic module with 575-585W power output. Bifacial design captures light from both front and rear sides for increased energy yield. Double-glass construction provides enhanced durability and long-term reliability.
• OEM/ODM Customization Services Custom branding and housing, control system localization, certification alignment (CE, MCS, Keymark), and capacity/feature customization for brands and distributors. Provides private-label manufacturing services for global heat pump and solar thermal brands.

Quantifiable outcome

• Up to 80% operating cost savings vs gas boilers, 70% vs electric boilers
• +6 more outcomes

Named customers7 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

AI capability4 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• Paradigma GmbH (Germany)coreStrategic or Co-development Partner · 1 January 2001Sino-German joint venture established in 2001 between Linuo Group (China) and Paradigma GmbH (Germany). Combines German engineering standards with Chinese manufacturing expertise. Founding partnership that established Linuo Ritter's technology foundation.
• Shanghai Jiao Tong UniversitycoreStrategic or Co-development PartnerAcademic partnership for development of 'Multi-grade Thermal Energy Efficient Supply Technology for Air Source Heat Pumps' which won the 2024 National Science and Technology Progress Award.
• Nuotong Technology (Subsidiary)coreTechnology or IntegrationSubsidiary company that built China's first 180°C Ultra-High Temperature Heat Pump Laboratory for performance testing and product development.
• Linuo GroupcoreStrategic or Co-development PartnerParent company of Linuo Ritter. Gao Yuankun serves as Chairman and President of Linuo Group. Wu Xiaobo, renowned business observer, visited Linuo Group facilities in May 2026.

Scale indicators9 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Gree Electric: China's largest air-conditioner and heat-pump manufacturer with extensive residential and commercial product lines. Directly comparable to Linuo Ritter on heat-pump manufacturing but operating at much larger volume and broader scope.
• Daikin: Global HVAC and heat-pump leader with manufacturing in China and a broad residential, commercial, and industrial portfolio. Comparable to Linuo Ritter as a heat-pump incumbent but with substantially larger scale and global brand.
• Midea Group: China-based global appliance and HVAC giant producing residential heat pumps, water heaters, and commercial HVAC systems. Comparable to Linuo Ritter on product category but with materially larger scale and stronger Chinese distribution.
• Hisense HVAC: Chinese HVAC and heat-pump manufacturer targeting residential, commercial, and light-industrial segments. Comparable to Linuo Ritter's residential and commercial heat-pump business and direct Chinese-market competitor.
• Mitsubishi Electric: Japanese diversified manufacturer with Ecodan air-source heat pumps and broader HVAC portfolio. Comparable to Linuo Ritter on heat-pump product category, particularly high-efficiency residential and commercial systems.

Direct peers

• Vaillant Group: European heating and heat-pump specialist (Vaillant, Saunier Duval, Bulex brands) with deep installer channels. Directly comparable to Linuo Ritter as a heat-pump and solar-thermal manufacturer targeting residential and commercial European markets.
• Stiebel Eltron: German heat-pump and hot-water technology specialist focused on residential and light commercial applications. Closely comparable to Linuo Ritter's residential and commercial heat-pump lines, particularly the R290 monobloc product family.
• Viessmann: German family-owned heating technology manufacturer spanning heat pumps, solar thermal, and industrial process heat. Comparable to Linuo Ritter across the same product categories (heat pumps, solar, condensing technology) and the same B2B installer/distributor go-to-market model.
• Bosch Thermotechnology: German heating, hot-water, and heat-pump manufacturer with strong European distribution. Directly comparable to Linuo Ritter as a Sino-German heating heritage player offering heat pumps, solar thermal, and integrated HVAC solutions for residential and commercial markets.
• NIBE Energy Systems: Swedish heat-pump manufacturer (NIBE, Bosch Thermotechnology acquisition target) with strong European residential installer network. Directly comparable to Linuo Ritter's air-source heat-pump product portfolio and renewable-heating value proposition.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@linuoritter7103
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/linuo-ritter

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries7 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 LINUO RITTER