Luftmeister

What Luftmeister does

Luftmeister GmbH is a German measurement technology company founded in 2016 in Kirchzarten, Baden-Württemberg, that manufactures air meters and air energy meters to record air consumption and energy flows within HVAC, process air, and flue gas systems. The company's flagship product, the Luftenergiezähler EZ 55, holds the world's first PTB type examination certificate for an air energy meter and enables legally compliant, consumption-based ventilation cost billing under the DIN 94701 product standard and VDI 2077-4 guideline.

The core technology stack consists of patented open-channel probes (Luftmeister Freiburg/Kassel), Doppelschwert-Messstrecken (double-blade measuring sections with crossed probe arrangement), a multi-point calibration method that captures asymmetrical flow profiles, and density/enthalpy measurement subsystems. A proprietary in-house calibration laboratory certified by PTB delivers measurement uncertainty below 1% (k=2) across a flow range of 25 to 36,000 m³/h. Solutions address flow velocities from 1–10 m/s, dew points from -120°C to +380°C, and process temperatures up to 1,100°C. The product portfolio extends into three solution lines: HVAC efficiency (RLT-Effizienz), waste heat quantification (Abwärme-Messlösungen with three engagement tiers), and certified air consumption metering for ventilation cost allocation.

Luftmeister sells through a consultative, direct field-sales motion targeting industrial operators, commercial real estate owners, energy consultants, and engineering planners in Germany and Austria. Revenue is generated via proprietary hardware sales, project-based professional services, and managed metering services. The customer base includes large German industrials such as BASF, Siemens, Volkswagen, Daimler Truck, Bayer, Merck, Saint-Gobain, Lufthansa, ZEISS, and Wienerberger, plus cleanroom operators (Biotest, Bosch Semiconductor, Globalfoundries, Exentec). Pricing is custom and not publicly disclosed.

Name

Luftmeister

Legal name

Luftmeister GmbH

Website

https://luftmeister.de

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

Luftmeister GmbH (founded 2016, Kirchzarten, Germany) manufactures PTB-certified air energy meters and patented flow/heat measurement systems for HVAC, process air, and flue gas applications, serving industrial facilities and commercial buildings in Germany and Austria.

Ownership category

akta.pro rank

Product category

HVAC measurement instruments

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Refrigeration Equipment and Supplies Merchant Wholesalers (423740)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Steam & Air-Conditioning Supply (4961), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

Keywords

• Air flow measurement
• HVAC efficiency solutions
• Air energy meters
• Waste heat recovery
• Ventilation cost billing

Headquarters

HQ city

Kirchzarten

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Measurement Equipment Sales: Sale of proprietary air energy meters (Luftenergiezähler EZ 55), measuring sections, and sensor systems. Products include Doppelschwert-Messstrecken, differential pressure probes, and calibration equipment. Revenue is one-time with potential for replacement/recalibration services.
2. HVAC Efficiency Consulting Services: Consulting services including on-site assessment of HVAC systems, air balance optimization, air distribution analysis, and RLT-Controlling. Services include installation, commissioning, and calibration of measurement solutions. Professional services revenue with project-based pricing.
3. Waste Heat Potential Assessment Services: Three-tiered waste heat potential determination services: point-based assessment, measurement series, and permanent measurement installation. Services support compliance with energy efficiency legislation and waste heat utilization projects.
4. Air Consumption Metering Solutions: Legally compliant, consumption-based ventilation cost billing systems based on the certified air energy meter. Includes installation, verification commissioning, and monitoring services for building owners and operators.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Luftmeister manufactures and sells the patented Luftenergiez\u00e4hler EZ 55 air energy meter and complementary Doppelschwert-Messstrecken (double-blade measuring sections) and open-channel probes for precise air flow and heat flow measurement in HVAC, process air, and flue gas systems. The company delivers these hardware products together with on-site professional installation, calibration, commissioning, and HVAC efficiency / waste heat recovery consulting services to industrial facilities and commercial buildings. Its solutions enable legally compliant consumption-based ventilation cost billing (per DIN 94701 / VDI 2077-4), HVAC optimization, and waste heat quantification for industrial customers.

Product overview

Luftmeister is a German technology company (Kirchzarten) specializing in air handling measurement and efficiency solutions. The core product is the patented Luftenergiezähler (Air Energy Meter) EZ 55, which achieved PTB type approval in 2019 as the world's first legally certified air energy measuring device, enabling consumption-based ventilation cost billing per DIN 94701. This is complemented by precision Volumenstrom-Messstrecken (air flow measuring sections) including the Doppelschwert-Messstrecken (double-blade design) for high-accuracy flow measurement. The product portfolio spans three main areas: (1) HVAC Efficiency Solutions (RLT-Effizienzlösungen) for optimizing air flow, air balance, and recirculation systems; (2) Waste Heat Solutions (Abwärme-Messlösungen) for quantifying and utilizing industrial waste heat; and (3) Air Consumption Meters for legally compliant billing. All products and services are supported by an in-house PTB-certified calibration laboratory. The company operates primarily B2B, serving industrial facilities and commercial buildings through operators, planners, and energy consultants.

Differentiator

Problem solved

Functional benefit

Products and services

• Luftenergiez\u00e4hler EZ 55 (Air Energy Meter) Patented air energy meter that measures air consumption (m\u00b3), heat consumption (kWh), and cooling consumption (kWh), enabling legally compliant consumption-based ventilation cost billing under DIN 94701. Features a differential pressure sensor cascade for 1-10 m/s flow range, absolute pressure sensor, enthalpy sensor inputs, 9-channel data logger, and M-Bus, Modbus-RTU, pulse, and analog outputs. PTB-certified and intended for building owners, operators, and HVAC metering applications.
• Luftmeister-Doppelschwert-Messstrecken (Double-Blade Measuring Sections) Precision measuring sections with a patented crossed probe arrangement (double-blade design) in which each duct quadrant is equally represented, enabling accurate air flow measurement even under asymmetrical flow conditions. Used for certified consumption-based ventilation cost billing applications requiring high precision.
• Volumenstrom-Messl\u00f6sungen (Air Flow Measurement Solutions) Air flow measurement solutions using patented probes with open-channel design that capture all flow vectors along the entire probe length, providing precise volume flow capture in HVAC systems, process air, and flue gas applications across a 1 to 10 m/s flow range.
• Luft-W\u00e4rmestrom-Messung (Air Heat Flow Measurement) Heat flow measurement in air, process air, and flue gas using the Luftenergiez\u00e4hler system, capturing air density and enthalpy through temperature, humidity, and absolute pressure measurement to calculate thermal power in kW and enable efficiency optimization in industrial and HVAC systems.
• RLT-Effizienzl\u00f6sungen (HVAC Efficiency Solutions) Professional HVAC efficiency consulting and operational services including air flow optimization, air balance management, air distribution adjustment, recirculation air system optimization, replacement of unreliable k-factors, and HVAC controlling with key performance indicators. Delivered to industrial and commercial operators as on-site engagement.
• Abw\u00e4rme-Messl\u00f6sungen (Waste Heat Measurement Solutions) Professional waste heat potential measurement services offered in three tiers: point-based assessment, time-series measurement campaigns, and permanent installation for continuous monitoring. Supports compliance with energy efficiency legislation and the planning of waste heat recovery projects for industrial facilities.
• Luftmeister-Volumenstrom-Kalibrierlabor (Air Flow Calibration Laboratory Services) In-house PTB-certified air flow calibration laboratory services for measurement equipment, covering ranges from 25 m\u00b3/h to 36,000 m\u00b3/h with total measurement uncertainty (k=2) below 1%. Certified by PTB and verification authorities and re-audited annually.

Quantifiable outcome

• Measurement solutions typically pay for themselves within 1-2 years through avoided energy waste
• +3 more outcomes

Named customers23 records

Segments4 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 indicators8 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Siemens AG: Global industrial technology conglomerate offering building technologies, HVAC automation, and process instrumentation. Comparable as a broad incumbent that integrates measurement and HVAC optimization capabilities — and is also a Luftmeister customer.
• Endress+Hauser: Global leader in industrial process measurement instruments, including flow, level, and analytical sensors. Highly comparable to Luftmeister as a specialist measurement instrumentation provider serving industrial customers with high-precision, certified solutions.
• SICK AG: German manufacturer of industrial sensors and measurement systems, including flow and air flow measurement solutions for HVAC and process applications. Direct overlap with Luftmeister in industrial air measurement, though SICK operates across a much broader sensor portfolio.
• Honeywell International: Diversified industrial and building automation conglomerate offering HVAC controls, energy management, and flow instrumentation. Comparable to Luftmeister as a broad incumbent with overlapping HVAC measurement and building automation capabilities.

Direct peers

• CS Instruments GmbH & Co. KG: German manufacturer of industrial measurement instruments for compressed air, gas flow, and consumption analysis. Direct comparable to Luftmeister in industrial flow and consumption measurement with calibration capabilities.
• Sierra Instruments: Manufacturer of mass flow controllers and meters for industrial gas, air, and process measurement. Comparable to Luftmeister in high-precision industrial flow measurement with calibration-supported accuracy claims.
• Kurz Instruments: US-based manufacturer of thermal mass flow meters and air flow measurement instruments for industrial and process applications. Comparable to Luftmeister in precision air flow measurement technology and target customers.
• Testo SE & Co. KGaA: German measurement specialist with a strong HVAC and ventilation measurement portfolio (flow probes, air meters, flue gas analyzers). Closely comparable to Luftmeister in HVAC-focused air flow and energy measurement for industrial and commercial applications.

Emerging players

• Landis+Gyr Group AG: Swiss metering specialist focused on energy management and consumption-based billing for utilities. Comparable to Luftmeister in certified, consumption-based measurement infrastructure for billing applications.
• Itron Inc. Specialized in metering and consumption measurement for utilities and buildings. Comparable to Luftmeister in consumption-based measurement and billing applications, particularly relevant to the ventilation cost billing use case.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/luftmeister-amberg

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Luftmeister