Thessla Green

What Thessla Green does

Thessla Green Sp. z o.o. is a privately-held Polish manufacturer of residential heat-recovery ventilation (HRV) and air purification products, headquartered in Kokotów, Lesser Poland. The company's portfolio centers on the AirPack family of HRV units (AirPack4, AirPack Home, and the flat AirPack line) in capacities from roughly 200 to 1,850 m³/h, paired with the Particle+ 500 central HEPA H13 air purifier and the AirTube expanded-polystyrene duct system. Differentiated technical features include the FullShell thermally-isolated housing, an Enthalpy exchanger, AFC (Automatic Filter Control) real-time filter wear monitoring, CF2 balanced-airflow control, FPXptc anti-frost protection, and the InFlow acoustic fan placement. The AirPack4 platform has been Passive House Institute certified in 2025 across 300h/400h/500h models and is declared under the Polish Czyste Powietrze government subsidy program.

Thessla Green sells exclusively through a tiered Polish channel — authorized distributors, certified installers, and regional sales representatives covering individual voivodeships — supported by an Installer Platform (platforma.thesslagreen.com) and an extensive technical documentation library on its website. End customers are residential homeowners and small residential developers; the company also addresses light-commercial use cases through the AirPack flat models. The company has accumulated an installed base of more than 18,000 homes with CF-balanced-ventilation and more than 22,000 homes with FPX frost protection.

The revenue model is hardware-led: one-time equipment sales of recuperators, duct systems, air purifiers, and control accessories, supplemented by a recurring consumables stream from CleanPad and CleanPad Hepa replacement filters. Pricing is quote-based and distributed through the partner network rather than published online. R&D is partly supported by European Funds, including a 1,280,430 PLN project for innovative HVAC products. The company is registered as a Polish Sp. z o.o. with 19 employees and 1,620,000 PLN registered capital, founder-controlled, with no disclosed external private equity or venture capital.

Name

Thessla Green

Legal name

THESSLA GREEN SP. Z O.O.

Website

https://thesslagreen.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Thessla Green is a privately-held Polish manufacturer of residential heat-recovery ventilation units (AirPack4 series), HEPA air purifiers (Particle+), and EPS duct systems (AirTube), sold through a national distributor and installer channel in Poland.

Ownership category

akta.pro rank

Product category

Residential HVAC Ventilation Equipment

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Air Filtration & Indoor Air Quality Components (Filters/UV/ERVs-HRVs) (IMADANAE)

akta.pro secondary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Heat recovery ventilation
• Residential ventilation systems
• Air handling units
• Energy recovery ventilators
• HVAC equipment

Headquarters

HQ city

Kokotów

HQ country

Poland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. HVAC Equipment Sales: Sale of ventilation recovery units (AirPack series), central air purifiers (Particle+), and duct systems (AirTube). One-time hardware purchases with various capacity models (300/400/500 m³/h).
2. Control Panels and Accessories: Sales of control panels (Air++, AirMobile), expansion modules, sensors, and mounting accessories for the ventilation systems.
3. AirTube Ventilation Installation: Sales of AirTube insulated duct system and fittings for ventilation installations, including accessories like mounting brackets and clamps.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Thessla Green manufactures and supplies residential heat recovery ventilation (HRV) units, air purifiers, and ductwork/duct systems for homes and apartments. The company produces these products under its own brand in Poland and sells them through a network of authorized distributors and installers serving the residential construction and renovation market.

Product overview

Thessla Green Sp. z o.o. is a Polish manufacturer of residential ventilation and air quality products. The product portfolio centers on the AirPack family of heat recovery ventilation (HRV) units — available in horizontal (AirPack4 h series, AirPack Home h series) and vertical (AirPack4 v series) orientations with capacities from 200 to 1850 m3/h — paired with the Particle+ 500 central air purifier and the AirTube insulated duct system. The AirPack units come in three technology tiers (Enthalpy with moisture recovery, Energy++ with highest efficiency, Energy+ with high efficiency) and are supported by a modular ecosystem of add-on control systems (Air++, AirMobile app, CF2 airflow balancing, FPXptc anti-frost, AFC filter monitoring, QX multi-sensor air quality management, Expansion2, ModbusDivider, CrCooler), filter consumables (CleanPad Pure, CleanPad Hepa 01, CleanPad 09), and mounting accessories. The portfolio is designed as a fully integrated home ventilation and air purification solution.

Differentiator

Problem solved

Functional benefit

Brands

• AirPack4: Heat recovery ventilation units (rekuperatory) available in various models including Enthalpy, Energy++, and Energy+ variants for residential ventilation systems.
• Particle+
• AirTube
• Air++
• AirMobile
• Expansion2
• ModbusDivider
• CrCooler
• GroundBox
• CleanPad Pure

Quantifiable outcome

• 99.9% air purification efficiency for PM2.5, PM10, allergens, bacteria, viruses, and fungal spores
• +5 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability3 records

Feature8 records

Scale indicators3 records

Recent moves7 records

Expansion highlights8 records

Direct peers

• Komfovent: Lithuanian manufacturer of residential and commercial ventilation units with heat recovery, particularly active in CEE markets. Comparable product line, regional focus, and installer-channel go-to-market.
• Vasco (a Brand of Arbonia): European ventilation brand under Arbonia producing residential HRV units and ventilation grilles. Sells through HVAC distributors and installers across Benelux, DACH, and Eastern Europe — directly comparable to Thessla Green's channel and product profile.
• Zehnder Group: Swiss-listed manufacturer of residential and commercial heat recovery ventilation units, radiators, and indoor air quality systems. Directly competes with Thessla Green in residential HRV across Europe and is the category leader by revenue and brand recognition.
• Östberg: Swedish manufacturer of fans and air handling units with a residential HRV range. Sells through European distributors and competes with Thessla Green in the energy-efficient residential ventilation category.
• Brink Climate Systems: Dutch manufacturer of residential mechanical ventilation with heat recovery (MVHR) units. Sells through installer networks in Western and Eastern Europe with comparable product positioning and target customer (residential new build and renovation).
• Blauberg: European ventilation manufacturer with strong presence in Poland and Eastern Europe, producing residential and commercial HRV units, fans, and air handling units. Closest direct geographic competitor to Thessla Green in the Polish market.
• Paul Wärmerückgewinnung (Paul Novus): German residential ventilation manufacturer focused on decentralized and centralized HRV units with high efficiency. Targets the same Passive House and energy-efficient retrofit customer as Thessla Green.

Broad incumbents

• Systemair: Swedish-listed ventilation group with a full residential and commercial HRV portfolio. Targets the same passive-house and energy-efficient residential renovation segment as Thessla Green, but across many European markets.
• Viessmann: Large German HVAC systems manufacturer offering residential heat pumps, boilers, and ventilation solutions. Overlaps with Thessla Green in residential HVAC and benefits from cross-selling into existing heat pump / heating channels.
• Stiebel Eltron: Large German HVAC manufacturer offering residential heat pumps, water heaters, and MVHR units. Overlaps with Thessla Green in residential ventilation but operates as a broad-line HVAC incumbent with significantly larger scale and brand.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/thessla-green-sp-z-o-o

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

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 Thessla Green