What Termios does

Termios GmbH is a Düsseldorf-based, privately held German technology company founded in 2023 that develops and markets termios Pro, a smart thermostat system purpose-built for the residential housing sector (Wohnungswirtschaft). The system consists of three integrated components: a battery-free smart thermostat that harvests energy via temperature differentials at the radiator (thermo-harvesting), a LoRaWAN/4G gateway providing end-to-end encrypted connectivity for up to 80 thermostats per gateway, and a GDPR-compliant European-hosted cloud platform (Heating.AI) that runs a self-learning adaptive hydraulic balancing algorithm. The platform performs continuous optimization, anomaly detection (open windows, faulty valves), and digital heat management dashboards for property operators.

Termios generates revenue through a hybrid model combining hardware sales (thermostats and gateways), recurring SaaS subscriptions for the Heating.AI cloud platform, and professional services including installation and BAFA subsidy management. Pricing is quote-based and tied to project scope (approximately 5 thermostats per residential unit), with multi-year contracts and BAFA subsidy pass-through of up to 15% on hardware/installation. The go-to-market is sales-led and consultative, targeting social housing companies, municipal housing providers, asset managers, and property owners through direct outreach, demo booking, and vertical industry events (HEAT EXPO 2025).

The company's value proposition is anchored in regulatory compliance (HLK Stuttgart certification equivalent to Method B, GEG §60c, EnSimiMaV §3) and customer-validated energy savings of up to 14% (Fraunhofer FIT study) to 30% (project-specific outcomes) in existing buildings without major renovation. Named enterprise customers include LEG Immobilien-Gruppe, KHW Kommunale Haus und Wohnen, Wunstorfer Bauverein, Viersener Aktien-Baugesellschaft, Stadtwerke Bonn, Jenawohnen, and Erftland. The company is led by co-managing directors Matthias Kramer and Stephan Thoenissen, with Marco Maisel heading sales.

Name

Termios

Legal name

termios GmbH

Website

https://www.termios.de

Company type

Private

Founded year

2023

Operating status

Operating

Short description

Termios GmbH, founded in 2023 in Düsseldorf, develops termios Pro, a battery-free smart thermostat system with adaptive hydraulic balancing and a cloud-based Heating.AI platform, targeting German residential housing companies, asset managers, and property owners for compliance-driven energy savings.

Ownership category

akta.pro rank

Product category

Smart Heating and Building Energy Management

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB)

akta.pro secondary industries

Smart Thermostat & HVAC Automation Integration (HSAHADAC), Smart HVAC Monitoring, Diagnostics & Predictive Maintenance (HSAOANAC), Residential Demand Response (Smart Thermostats, HVAC, Water Heating, Home Batteries) (EUAFAGAA), Smart HVAC, IAQ & Energy Optimization (HSAPAPAB)

Keywords

• Smart heating thermostat
• Hydraulic balancing
• Building energy management
• Residential heating optimization
• Smart climate control

Headquarters

HQ city

Düsseldorf

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Sales (Thermostate & Gateways): Sale of smart thermostats, gateways, and related hardware components for heating system optimization. Pricing considers approximately 5 thermostats per residential unit.
2. SaaS / Cloud Platform Subscription: Cloud-based digital heat management platform providing continuous optimization, monitoring, and reporting. Part of the all-in-one solution for building management.
3. Installation Services: Professional installation services provided as part of the complete solution. Includes service and maintenance offerings.
4. Fördermanagement (Subsidy Management): The cost calculator mentions 15% funding on hardware and installation, and 50% on subsidy management, indicating BAFA subsidy processing as a service component.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Termios develops and sells the termios Pro all-in-one smart heating system for residential buildings, combining self-powered (thermo-harvesting) smart thermostats, LoRaWAN/4G gateways, and a Heating.AI cloud platform that performs certified adaptive hydraulic balancing. The offering targets housing companies, asset managers, and property owners in Germany with delivered energy savings of up to 30% in existing buildings, and includes professional installation and BAFA subsidy management services.

Product overview

Termios offers termios Pro as an all-in-one smart heating solution for the residential property sector. The system consists of three main components: the termios Pro smart thermostat (which uses thermo-harvesting for battery-free operation), the termios Pro Gateway (for LoRaWAN and 4G communication), and the termios Cloud Platform (with Heating.AI for permanent optimization). Additional services include the termios Machbarkeits-Check (feasibility check) and certified hydraulic balancing. The solution is designed for housing companies, asset managers, property owners, and tenants, targeting energy savings of up to 30% without requiring extensive renovation measures.

Differentiator

Problem solved

Functional benefit

Products and services

• termios Pro Smart Thermostat Self-powered smart heating thermostat with thermo-harvesting for battery-free operation, certified adaptive hydraulic balancing, and LoRaWAN/4G connectivity for residential properties. Designed for housing companies, asset managers, and property owners seeking energy savings in existing buildings.
• termios Pro Gateway Connectivity device enabling communication between termios Pro thermostats and the termios Cloud via LoRaWAN and 4G mobile networks with end-to-end encryption. Supports up to 80 thermostats per gateway with a maximum of 2 gateways per property.
• termios Cloud Platform (Heating.AI) GDPR-compliant cloud-based software hosted in Europe that continuously optimizes heating via the Heating.AI self-learning algorithm, provides dashboards for energy consumption monitoring, and enables property-level, floor, unit, or room maximum-value definitions. Includes anomaly detection for open windows and faulty valves.
• termios Machbarkeits-Check (Feasibility Check) Feasibility check service that evaluates technical feasibility, timeline, and cost of implementing termios Pro in a residential property within 14 days, including BAFA subsidy eligibility verification and concrete installation timeframes. Targeted at housing companies, asset managers, and property owners.
• Certified Hydraulic Balancing Service Hydraulic balancing service delivered using termios Pro thermostats, certified by HLK Stuttgart as equivalent to Method B and fulfilling the requirements of §3 EnSimiMaV and §60c of the German Building Energy Act (GEG). Includes professional installation, maintenance, and BAFA subsidy processing.

Quantifiable outcome

• Up to 30% energy savings
• +5 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• Vebego DeutschlandcoreImplementation/ SI/ Consulting Partner · 1 November 2024Vebego Deutschland collaborated with termios on the field test with LEG Wohnen in Gelsenkirchen. Approximately 1,000 termios Pro thermostats were installed in 200 residential units as part of this pilot project. Vebego provided installation services and process optimization during the field test phase.
• SpirotechcoreStrategic or Co-development PartnerSpirotech is a strategic partner providing deaeration systems for heating systems. The partnership enables comprehensive heating optimization by combining termios Pro's digital heating control in apartments with Spirotech's equipment for boiler room optimization. Together they offer efficiency solutions that reduce heating costs for tenants.
• HLK StuttgartcoreOthersHLK Stuttgart is a certification body that tested and certified termios Pro for hydraulic balancing. They issued an official certificate confirming the system is suitable for hydraulic balancing and exceeds conventional methods.
• LEG WohnencoreChannel Partner/ Reseller/ DistributorLEG Wohnen is a large housing company that conducted a field test with termios Pro and is now rolling out the system across its portfolio. As a major customer, LEG represents a flagship reference for scaling to additional properties.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• tado°: Munich-based smart thermostat company offering radiator thermostats, room sensors, and heating control apps across Europe. Directly competes with Termios in the German residential heating-optimization market, with a stronger consumer brand and larger installed base.
• AVM (FRITZ!DECT 301): Berlin-based manufacturer of FRITZ! smart home products including the FRITZ!DECT 301 radiator thermostat, deeply embedded in German consumer and prosumer markets. Competes on smart radiator thermostat functionality in multi-family housing.

Broad incumbents

• Viessmann: Major German HVAC systems manufacturer offering boilers, heat pumps, and connected heating controls (ViCare). A broad incumbent with installed-base advantage in German housing and capability to bundle controls with primary heating equipment.
• Danfoss (Icon / Ally): Global leader in radiator thermostats and heating controls, with the Icon and Ally smart heating product lines. A direct competitor in smart radiator valves and a major player in the German and European residential heating market.
• Netatmo (Legrand): Legrand-owned smart home brand offering Netatmo Smart Radiator Valves and a broader connected home portfolio. Competes in the European residential smart heating space with a strong retail and consumer brand.
• Bosch Smart Home (with Bosch Thermostat / Buderus): Bosch offers smart thermostats and full HVAC solutions (including Buderus-branded heating systems) for residential properties. A broad incumbent with deep installer relationships, financing options, and end-to-end heating system reach that dwarfs Termios's niche offering.

Regional players

• Delta Dore: French smart home and HVAC controls company with a strong presence in France and Benelux, offering smart radiator valves and heating management. Comparable in product scope to Termios but focused on the French-speaking market rather than Germany.

Emerging players

• Green Fusion: Berlin-based heating optimization startup offering AI-driven hydraulic balancing and heating control. Co-recipient of the Digitalpioniere 2026 award with Termios and KHW, addressing the same social-housing customer segment with a software-only model rather than hardware.
• Loxone: Austrian/German building automation specialist providing smart home and HVAC control systems for residential and light commercial properties. Competes with Termios in the integrated smart heating/building controls space, particularly for new builds and major renovations.
• Thermokon: German specialist in building automation sensors and HVAC controls (including LoRaWAN-based wireless products). Technically comparable to Termios on the LoRaWAN/controls layer, with overlap in smart-building and energy-optimization use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/termios/?originalSubdomain=de
• Instagraminstagram.com/termios_smartheating

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Termios