NNK Kft.

NNK Kft.

NNK Környezetgazdálkodási, Számítástechnikai, Kereskedelmi és Szolgáltató Kft.

Debrecen, Hungary

GeothermalSolarBiomassLimited company
Profile last updated: July 22, 2026

About

NNK Kft. is a limited company headquartered in Debrecen, Hungary specializing in Geothermal, Solar, Biomass.

Hungarian limited company offering water well drilling, groundwater and environmental services, remediation, water treatment, and renewable energy installations including geothermal ground probes, heat pumps, solar PV and biomass systems for municipalities and businesses. Operates from Debrecen and has projects in Romania.

Headquarters

Debrecen, Hungary

Company type

Limited company

Focus areas

geothermal probesheat pump installationsolar PVbiomasswater well drillinggroundwater monitoringenvironmental remediationwater treatment

Products & services

Business models

B2B

Value chain

EngineeringConstructionO&MConsulting

Service areas (3)

  • Geothermal and heat pump systems

    Design and installation of ground probes and heat pump systems replacing gas heating.

  • Renewable energy investments

    Design and construction of renewable-based energy retrofits for public and private buildings, including solar, biomass and geothermal.

  • Water well drilling and environmental services

    Water well drilling, groundwater monitoring, environmental remediation and sampling services.

Locations

Headquarters

Bajcsy-Zsilinszky utca 61, 4025, Debrecen, Hungary

Service regions

HungaryRomania

Projects

6

Kisar Községháza energetikai fejlesztés

Geothermal ground-source heat pump system

Комплекс energy retrofit of a municipal building with façade and roof insulation, window replacement and heating upgrade using three ground probes of 80 m depth.

Kisar, Hungary

Debreceni Egyetem Gyermeknevelési és Felnőttképzési Kar energetikai korszerűsítés

Geothermal ground-source heat pump system

Energy retrofit including a heating system conversion, external insulation and installation of 76 ground probes of 100 m each.

Debrecen, Hungary

Ing-Reorg Kft. geotermikus szondarendszer

Geothermal probe system

Installation of a geothermal probe system for a commercial client.

0.1 MW capacityDebrecen, HungaryClient: Ing-Reorg Kft.

Újszilvás községi intézmények fűtéskorszerűsítése

Geothermal heating

Modernisation of the heating system of municipal institutions using geothermal energy.

Újszilvás, HungaryClient: Újszilvás Község Önkormányzata

Szécsény energetikai projektek

Geothermal, biomass and solar PV systems

Ground-source heating system for the town hall and kindergarten, biomass boiler for the medical clinic, and solar PV installed on eight municipal buildings.

Szécsény, Hungary

Apolló Hotel geotermikus szondarendszer

Geothermal probe system

Installation of a nearly 600 kW geothermal probe system at a hotel.

Hajdúszoboszló, Hungary

Credentials & affiliations

Certifications

NAH-1-1468/2024 accredited sampling partner

Issued by: Nemzeti Akkreditáló Hatóság

Partnerships

ANALAB Kft.

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