Soltherm
Soltherm AG is a Swiss family-owned HVAC company in Altendorf, founded in 1975, that designs, installs, and services energy-efficient heat pumps, controlled residential ventilation, and induction climate-control systems for residential and commercial customers across German-speaking Switzerland, also reselling Ochsner and Siemens products.
- Company typePrivate
- Founded1975
- HeadquartersAltendorf, Switzerland
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Soltherm does
Soltherm AG is a privately held Swiss family-owned HVAC company headquartered in Altendorf, Canton Schwyz, founded in 1975 by Emil Grüniger. It designs, manufactures (in part), distributes, installs, and services energy-efficient heating, ventilation, and climate-control systems for residential and commercial/institutional customers in German-speaking Switzerland, with regional coverage across the cantons of Schwyz, St. Gallen, Zürich, Aargau, Bern, Luzern, and Basel.
The product portfolio combines proprietary technologies with authorized third-party brands. Proprietary or own-brand offerings include Soltherm Wärmepumpen (legacy Mani & Fink heat pumps), the Mosway Komfort 500 residential ventilation unit with counterflow heat recovery, Soltherm induction units (SJ800) for window-mounted climate control, and the legacy TemoVex line now continued as REC Indovent (RT250/RT400S). Patented/proprietary innovations include Redasolair® (worldwide patent, 1999), Resolair® (95% heat-recovery efficiency, Muba Research Prize 1984), Rekabair® (Grand Prize Muba 1989), the Hydrotransformer energy-storage system (1998), and the VisMoLog web monitoring system (2006). Authorized reseller lines include Ochsner Wärmepumpen (since 2021: Air Milan, AIR Hawk/Falcon, TERRA FOX ground-source), REC Indovent, and Siemens Climatix controllers and sensors.
The business model is sales-led and project-based: hardware is quoted on request, while consumables (filters, Siemens spare parts) are sold via an online shop. Revenue streams are hardware sales (heat pumps, ventilation units), consumables (filters, parts), and professional services (maintenance, retrofit, 1:1 replacement). Soltherm services an installed base of more than 5,000 systems, including legacy Mani + Fink AG equipment absorbed in 2000. Leadership transitioned in 2019 from founder Emil Grüniger to Stefan Grüniger, Kristina Ruoss, and Susanne Grüniger. Revenue is not publicly disclosed and the company operates with 1-10 employees as a micro-enterprise with no external institutional funding.
Soltherm firmographics
Firmographics- Name
- Soltherm
- Legal name
- Soltherm AG
- Website
- https://soltherm.ch
- Company type
- Private
- Founded year
- 1975
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Soltherm AG is a Swiss family-owned HVAC company in Altendorf, founded in 1975, that designs, installs, and services energy-efficient heat pumps, controlled residential ventilation, and induction climate-control systems for residential and commercial customers across German-speaking Switzerland, also reselling Ochsner and Siemens products.
- Ownership category
- akta.pro rank
Soltherm industry classification
Industry- Product category
- HVAC Systems
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Refrigeration Equipment and Supplies Merchant Wholesalers (423740)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)
- akta.pro primary industry
- Chillers & Cooling Plant Equipment (IMAHAKAE)
- akta.pro secondary industry
- Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH)
Keywords
Where Soltherm is headquartered
LocationHeadquarters
- HQ city
- Altendorf
- HQ country
- Switzerland
- HQ region
- Europe
Offices1 record
Markets served
Soltherm business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Heat Pump Sales and Installation: Sales and installation of heat pumps including own Soltherm brand (formerly Mani & Fink), Ochsner brand. Services include new installations, replacements, and refrigerant conversion (R407C retrofit until end 2026).
- Ventilation System Sales and Installation: Sales and installation of ventilation units including Mosway Komfort 500, TemoVex/REC Indovent units, Soltherm induction units. Ranges from 500-42000 m3/h capacity.
- Replacement Filters and Parts: Online shop sales of replacement filters (TemoVex pocket filters, Mosway filters) and Siemens replacement parts (controllers, weather sensors). Consumables and spare parts e-commerce.
- Customer Service and Maintenance: Service organization supporting over 5000 installed systems including former Mani + Fink installations. Provides maintenance, repairs, and technical support.
- Retrofit and Replacement Solutions: 1:1 replacement solutions for aging equipment (e.g., TemoVex to RT250/RT400S). Retrofit options for refrigerant conversion on older heat pumps.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | TemoVex Pocket Filters - Individual |
| Unit Pricing | Pay-as-you-go | TemoVex Filter Sets - Bundled |
| Unit Pricing | Pay-as-you-go | Siemens Replacement Parts |
| Unit Pricing | Pay-as-you-go | Mosway Filters |
| Other | Pay-as-you-go | Mosway Komfort 500 Ventilation Unit |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels4 records
Soltherm product offering
Product offeringCore offering
Soltherm AG is a Swiss family-owned company (founded 1975) that develops, sells, installs, and services energy-efficient heating, ventilation, and air conditioning (HVAC) systems. Its portfolio includes proprietary Soltherm-brand heat pumps (including legacy Mani & Fink systems), the Ochsner heat pump line (resold), Mosway Komfort 500 and TemoVex/REC Indovent controlled residential ventilation units with heat recovery, and Soltherm induction units. The company also runs a customer service organization maintaining over 5,000 installed systems across German-speaking Switzerland and sells replacement filters and Siemens spare parts through an online shop.
Product overview
Soltherm AG is a Swiss family business (founded 1975) specializing in energy-saving HVAC systems, offering a portfolio of proprietary ventilation and heat pump products alongside third-party offerings. The core product lines include Soltherm heat pumps (serving legacy Mani & Fink systems), their own-brand Mosway Komfort 500 ventilation units with heat recovery, TemoVex/REC Indovent ventilation systems, and Soltherm induction units for window installation. The company also resells Ochsner heat pumps and provides Siemens spare parts. These products are complemented by a comprehensive customer service organization supporting over 5,000 installed systems. The offering integrates hardware products with maintenance, repair, and replacement filter supplies.
Differentiator
Problem solved
Functional benefit
Brands
- Mosway: Mosway Komfort 500 ventilation unit with heat recovery (WRG), featuring counterflow heat exchanger and summer bypass, 3-stage EC fans, programmable for night/day/party operation.
- Soltherm Wärmepumpen
- Soltherm Induktionsgeräte
Products and services
- Soltherm Heat Pumps (Soltherm Wärmepumpen, formerly Mani & Fink) Heat pump systems (air-water and water-water with ground collectors) for residential and commercial heating, hot water production, and cooling. Includes maintenance, retrofit, and refrigerant conversion (R407C) services for legacy installations.
- Ochsner Heat Pumps
Quantifiable outcome
- Up to 95% temperature efficiency with Resolair® heat recovery systems
- +2 more outcomes
Companies that use Soltherm
Customer profileSegments2 records
Ideal customer profiles2 records
Soltherm technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature9 records
Soltherm partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Ochsner WärmepumpencoreSoltherm is an authorized reseller and installer of Ochsner heat pumps since 2021. Product range includes Air Milan (up to 70°C, heating/cooling/dryer), AIR Hawk and Falcon (with Plus X Award), and TERRA FOX ground source heat pumps (SCOP up to 5.8, A+++). Ochsner provides the heat pump hardware while Soltherm handles sales, installation, and service in German-speaking Switzerland.
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
Soltherm competitors and assessment
Company assessmentBroad incumbents
- Viessmann: Viessmann is a major German heating, heat pump, and HVAC manufacturer with established Swiss operations. Operates in the same product category (heat pumps, ventilation) as Soltherm but as part of a much broader climate solutions portfolio.
- Bosch Thermotechnik: Bosch Thermotechnik is the heating and hot water division of Bosch, with a full range of heat pumps and HVAC systems sold in Switzerland. Directly overlaps with Soltherm in heat pumps but operates as part of a global industrial conglomerate.
- Weishaupt: Weishaupt is a German heating and burner manufacturer with Swiss distribution, including heat pump offerings. Competes with Soltherm in residential and commercial heating but with significantly broader product and service capabilities.
- Stiebel Eltron: Stiebel Eltron is a large German heat pump and hot water manufacturer with a Swiss subsidiary. Competes broadly in the same product categories as Soltherm but at much greater scale and with a wider product portfolio.
- Vaillant: Vaillant is a European HVAC incumbent with strong Swiss market presence in heat pumps and heating. Competes with Soltherm in residential heating but offers a much wider product portfolio and brand reach.
Direct peers
- CTA AG: CTA AG is a Swiss heat pump and heating manufacturer based in Münsingen. Directly competes with Soltherm in residential and commercial heat pumps in the Swiss market with overlapping product lines and customer segments.
- Hoval: Hoval is a Liechtenstein/Swiss-based manufacturer of heating and ventilation systems with deep presence in German-speaking Switzerland. Highly comparable to Soltherm in target market, product category (heat pumps, ventilation), and Swiss/DACH distribution model, though at significantly larger scale.
- Zehnder Group: Zehnder Group is a Swiss-listed ventilation and indoor climate specialist. Closely comparable to Soltherm's controlled residential ventilation (KWL) and heat recovery business, with broader geographic reach but similar technology focus.
- Meier Tobler: Meier Tobler is a Swiss HVAC distributor and service provider offering heat pumps and ventilation to residential and commercial customers in German-speaking Switzerland. Directly comparable GTM model (sales-led, regional, service-driven) to Soltherm.
- Ochsner Wärmepumpen: Ochsner is an Austrian heat pump manufacturer whose products Soltherm has distributed since 2021. Comparable in product category (heat pumps) and technology tier (A+++, high SCOP); serves as both supplier and direct competitor in the Swiss market.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Soltherm financial estimates
Financial estimateRevenue estimate
Valuation estimate
Soltherm leadership team
Management profileNumber of profiles
Profiles3 records
Soltherm funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Soltherm 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 Soltherm
What does Soltherm do?
Soltherm AG is a Swiss family-owned company (founded 1975) that develops, sells, installs, and services energy-efficient heating, ventilation, and air conditioning (HVAC) systems. Its portfolio includes proprietary Soltherm-brand heat pumps (including legacy Mani & Fink systems), the Ochsner heat pump line (resold), Mosway Komfort 500 and TemoVex/REC Indovent controlled residential ventilation units with heat recovery, and Soltherm induction units. The company also runs a customer service organization maintaining over 5,000 installed systems across German-speaking Switzerland and sells replacement filters and Siemens spare parts through an online shop.
Is Soltherm a public or private company?
Soltherm is a private company. It is classified as family owned and is currently operating.
When was Soltherm founded?
Soltherm was founded in 1975. It employs 11 to 50 people.
Where is Soltherm based?
Soltherm is headquartered in Altendorf, Switzerland, in the Europe region.
How does Soltherm make money?
Five revenue lines are on record. Heat Pump Sales and Installation is the primary driver. The others are ventilation System Sales and Installation, replacement Filters and Parts, customer Service and Maintenance and retrofit and Replacement Solutions.
Who are Soltherm's main competitors?
Broad incumbents on record are Viessmann, Bosch Thermotechnik, Weishaupt, Stiebel Eltron and Vaillant. Direct peers are CTA AG, Hoval, Zehnder Group, Meier Tobler and Ochsner Wärmepumpen.
Does Soltherm have an API?
No public API is recorded for Soltherm.
What industry is Soltherm in?
Soltherm's product category is HVAC Systems. Its primary akta.pro industry code is IMAHAKAE, Chillers & Cooling Plant Equipment, with a secondary code of IMAHAKAH, Refrigeration Components & Controls (Compressors, Valves, Sensors). Its NAICS code is 33341 and its SIC code is 3585.