Meltem
Meltem GmbH is a third-generation German family-owned manufacturer (est. 1980, Alling near Munich) of heat-recovery ventilation systems — comfort units (M-WRG, M-WRG-II) and single-room units (SimplAir-EC) — serving residential, healthcare, and education customers via direct field sales, a planning service, and a Germany-only e-commerce shop.
- Company typePrivate
- Founded1980
- HeadquartersAlling, Germany
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Meltem does
Meltem GmbH is a German manufacturer of mechanical ventilation systems with heat recovery, founded in 1980 and headquartered in Alling near Munich, operating as a third-generation family-owned private company. The core technology is a recuperative cross-current heat exchanger that transfers thermal energy from exhaust air to incoming fresh air, achieving up to 91% heat recovery efficiency and reversible operation for summer cooling recovery. The product portfolio centres on two families: comfort ventilation units with heat recovery (M-WRG and M-WRG-II, the latter enabling multi-room ventilation from a single device) and single-room ventilation units (SimplAir-EC for bathrooms, WCs, and kitchens), supported by long-life replacement filters and accessories, optional radon protection for M-WRG-S devices, façade-integrated ducting for renovation projects, online firmware updates, and integration with building management systems via GLT.
Meltem serves residential new-build and renovation, healthcare, and education end markets, with architects, planners, trade contractors, and homeowners as primary customer personas. Its go-to-market combines a national field sales force with personal account managers, a free in-house planning service, free on-site consultation and installer training, active participation in industry trade fairs (architect@work, gedatec, Heinze), and a direct e-commerce shop for filters and replacement parts shipped within Germany; business customers place orders via email. Revenue is generated predominantly through hardware sales of ventilation units and recurring consumable sales, with a stated commitment to supply replacement parts for up to 45 years after product series discontinuation, supporting long-tail installed-base revenue.
The company employs 101–250 staff, operates a single headquarters and production facility at Alling (which has run on a 100 kWp photovoltaic / 60 kWh storage installation since 2024), and is led by Managing Director Vanessa Reynartz. Meltem markets itself across German, English, French, Italian, and Czech, with international business currently handled by written inquiry rather than a structured channel.
Meltem firmographics
Firmographics- Name
- Meltem
- Legal name
- Meltem GmbH
- Website
- https://meltem.com
- Company type
- Private
- Founded year
- 1980
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Meltem GmbH is a third-generation German family-owned manufacturer (est. 1980, Alling near Munich) of heat-recovery ventilation systems — comfort units (M-WRG, M-WRG-II) and single-room units (SimplAir-EC) — serving residential, healthcare, and education customers via direct field sales, a planning service, and a Germany-only e-commerce shop.
- Ownership category
- akta.pro rank
Meltem industry classification
Industry- Product category
- Heat Recovery Ventilation Equipment
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)
- SIC
- Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433)
- akta.pro primary industry
- Chillers & Cooling Plant Equipment (IMAHAKAE)
- akta.pro secondary industries
- Ventilation System Installation & Repair (Bath/Kitchen Fans, ERV/HRV) (HSAOAIAF), HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)
Keywords
Where Meltem is headquartered
LocationHeadquarters
- HQ city
- Alling
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Meltem business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Ventilation equipment sales: Sale of comfort ventilation units (M-WRG-II, M-WRG) and single-room ventilation units (SimplAir-EC) directly to customers through sales team, online shop, and partner channels.
- Replacement parts and filters: Ongoing sales of replacement filters, small parts, and accessories through e-commerce shop for both current and discontinued product series (up to 45 years availability).
- Planning services: Free professional planning service provided to customers, helping determine appropriate ventilation solutions. While the service is free, it supports equipment sales.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Online shop for private customers - filters and replacement parts |
| Quote-based/ custom | Pay-as-you-go | Business customer orders via written email |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Meltem product offering
Product offeringCore offering
Meltem manufactures and sells ventilation systems with heat recovery for residential and specialized non-residential buildings. Its portfolio includes comfort ventilation units (M-WRG-II, M-WRG series) that ventilate multiple rooms from a single device, single-room units (SimplAir-EC) for bathrooms, WCs, and kitchens, and supporting replacement filters and accessories sold via an online shop. The company complements its hardware with a free planning service, technical consultation, on-site training, and trade-in options, targeting energy-efficient new builds and renovations in Germany.
Product overview
Meltem manufactures a comprehensive portfolio of ventilation products comprising two primary categories: comfort ventilation systems with heat recovery (including the M-WRG-II and M-WRG series) and single-room ventilation units (such as SimplAir-EC). The product line extends to additional models including Vario II, Vario, G-4, M-1-R+M-3-R, and GLK, each supported by dedicated replacement filters, intake sets, and small parts. The portfolio also includes system solutions, accessories, and specialized options such as radon protection for M-WRG-S devices and facade-integrated ducting for renovation projects. The company provides online updates for its comfort ventilation units and supports integration with building management technology.
Differentiator
Problem solved
Functional benefit
Products and services
- M-WRG-II Comfort ventilation unit with heat recovery featuring high efficiency, noise protection, and healthy indoor air quality; supports multi-room ventilation from a single unit and is targeted at residential new builds and renovations.
- M-WRG Comfort ventilation series with heat recovery that combines low cost with high comfort, providing healthy indoor climate and improved living quality for residential applications.
- SimplAir-EC Single-room ventilation unit designed for bathrooms, WCs, and kitchens, featuring strong performance specifications, easy planning, and quick installation.
- Vario II Ventilation unit from an established series sold with replacement filters and accessories through the Meltem online shop.
- Vario Ventilation unit from an established series sold with replacement filters and accessories through the Meltem online shop.
- G-4 Ventilation unit from an established series sold with replacement filters, intake sets, and small parts through the Meltem online shop.
- M-1-R+M-3-R Ventilation unit series sold with replacement filters and intake sets through the Meltem online shop.
- GLK Ventilation unit from an established series sold with replacement filters and intake sets through the Meltem online shop.
Quantifiable outcome
- Heat recovery efficiency up to 91% keeps heating energy inside buildings
- +3 more outcomes
Companies that use Meltem
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles5 records
Meltem technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Meltem partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Waldecker PR GmbHminorExternal press agency supporting Meltem with media relations and publication inquiries. Provides professional communication services for press releases and media engagement.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
Meltem competitors and assessment
Company assessmentBroad incumbents
- Vaillant: Large German heating and HVAC incumbent offering residential heat pumps, ventilation, and heat recovery systems; broader portfolio with overlapping HRV product lines and shared installer channel.
- Viessmann: Large German HVAC incumbent offering heating, cooling, and ventilation solutions including heat recovery ventilation; broader portfolio but overlapping residential HRV product lines and German installer channel.
Direct peers
- Systemair: Swedish-listed manufacturer of ventilation, heating, and cooling products with a strong residential HRV range; directly competes with Meltem in heat recovery ventilation with comparable cross-counter-flow heat exchanger technology.
- Zehnder Group: Swiss-listed manufacturer of indoor climate systems including heat recovery ventilation units for residential and commercial buildings; closest direct competitor to Meltem in residential HRV/ERV with similar cross-flow heat exchanger technology.
- Swegon: Swedish indoor climate company producing energy recovery ventilators and HRV units for residential and commercial buildings; comparable heat recovery efficiency claims and product positioning.
- Maico: German manufacturer of fans, air-handling units, and ventilation systems with heat recovery; directly comparable product overlap and German-speaking market focus.
- Helios Ventilatoren: German ventilation specialist producing fans and heat recovery ventilation units for residential and small commercial applications; direct competitor in the same German mid-market segment.
- Stiebel Eltron: German manufacturer of heat pumps, domestic hot water, and residential ventilation with heat recovery; directly comparable to Meltem in residential HRV with overlapping German distribution through tradespeople.
- Aldes: French manufacturer of ventilation and indoor air quality solutions including single-room and centralized HRV units; comparable product technology and European residential/commercial focus.
- Vents: Eastern European manufacturer of ventilation equipment including HRV/ERV units; competes on price in single-room and comfort ventilation segments relevant to Meltem's product line.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Meltem social profiles
Digital presenceMeltem financial estimates
Financial estimateRevenue estimate
Valuation estimate
Meltem leadership team
Management profileNumber of profiles
Profiles2 records
Meltem funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Meltem M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Meltem
What does Meltem do?
Meltem manufactures and sells ventilation systems with heat recovery for residential and specialized non-residential buildings. Its portfolio includes comfort ventilation units (M-WRG-II, M-WRG series) that ventilate multiple rooms from a single device, single-room units (SimplAir-EC) for bathrooms, WCs, and kitchens, and supporting replacement filters and accessories sold via an online shop. The company complements its hardware with a free planning service, technical consultation, on-site training, and trade-in options, targeting energy-efficient new builds and renovations in Germany.
Is Meltem a public or private company?
Meltem is a private company. It is classified as family owned and is currently operating.
When was Meltem founded?
Meltem was founded in 1980. It employs 101 to 250 people.
Where is Meltem based?
Meltem is headquartered in Alling, Germany, in the Europe region.
How does Meltem make money?
Three revenue lines are on record. Ventilation equipment sales are the primary driver. The others are replacement parts and filters and planning services.
Who are Meltem's main competitors?
Broad incumbents on record are Vaillant and Viessmann. Direct peers are Systemair, Zehnder Group, Swegon, Maico, Helios Ventilatoren, Stiebel Eltron, Aldes and Vents.
Does Meltem have an API?
No public API is recorded for Meltem.
What industry is Meltem in?
Meltem's product category is Heat Recovery Ventilation Equipment. Its primary akta.pro industry code is IMAHAKAE, Chillers & Cooling Plant Equipment, with a secondary code of HSAOAIAF, Ventilation System Installation & Repair (Bath/Kitchen Fans, ERV/HRV). Its NAICS code is 33341 and its SIC code is 3564.