What is the main business of DZT Service?

The main business activity of DZT Service focuses on steam and air conditioning supply.

When was the company founded?

The company was registered in the Polish National Court Register (KRS) on April 16, 2002.

Where is the headquarters located?

The headquarters is located at: ul. Mieszka I 13, 58-160 Świebodzice.

What is the share capital?

The share capital of the company is PLN 65,000 (approx. $17,558).

What period do the latest financial data cover?

The latest available financial statement covers the period from January 1, 2024 to December 31, 2024.

What revenue was generated?

The company reported a revenue of $1,860,404 in 2024, which is a decrease of 17.2% compared to 2023.

Yes, the company recorded a net profit of $137,781 in 2024, meaning the company increased its profit by 11.0%.

What is the main operating cost?

The largest operating cost category falls under materials and energy. This category amounted to $661,362 in 2024, representing 40% of all operating expenses.

DZT Servicesp. z o.o.

Steam, hot water and air conditioning manufacturing and supply

KRS: NIP: REGON:

Overview

Status

Active

Registry date

2002-04-16

Share capital

65,000.00 PLN

Activity description

DZT Service operates within the DZT Group in the heating sector, providing services, design, construction and maintenance. Its activities include boiler-room and heat-substation support, measurements, instrumentation and control, installation and modernization work, comprehensive investment management, and testing of coal, slag, ash and water.

Registered address

ul. Mieszka I 13, 58-160 Świebodzice, Poland

Website

dztservice.pl

Phone

Social media

Electronic delivery address

AE:PL-45962-87579-CVFGD-24

Financials

Revenue history (in k)

From the notes

Current income tax (CIT due)

$52,000

Filing timeliness

Financial statements were filed on time, on average 45 days early. 4 of 6 audited by a statutory auditor.

202503/07/2026
202407/07/2025
202325/06/2024
202210/07/2023
202126/05/2022
202022/04/2021

Filed on timeDelayFiling deadline

Data and insights are generated automatically from financial statements – they may contain errors and are neither a credit assessment nor business advice.

Statistics

How the company ranks by revenue within its industry, city, voivodeship and across Poland in 2025.

Industry · Steam and air conditioning supply264 / 418

Top 63%

Division · Electricity, gas, steam and air conditioning supply692 / 6,507

Top 11%

Sector · Electricity, gas, steam, hot water and air conditioning manufacturing and692 / 6,507

Top 11%

City · Świebodzice30 / 113

Top 27%

Voivodeship · Dolnośląskie4,497 / 23,907

Top 19%

Country · Poland59,802 / 297,935

Top 20%

Results vs industry

Revenue

This companyUSD 2.07mMedianUSD 3.41mAverageUSD 33.43m

Net profit

This companyUSD 216.43kMedianUSD 157.25kAverageUSD 2.41m

Operating costs

This companyUSD 1.66mMedianUSD 3.31mAverageUSD 29.46m

Assets

This companyUSD 1.17mMedianUSD 5.19mAverageUSD 39.53m

News

2025-11-25

New Investment – Modernization of the Boiler Room in Kłodzko

Industry

Offer

Heating system maintenance
Boiler room operation
Installation of heat substations
Boiler room modernisation
Ventilation systems
Installation measurements
Laboratory testing

Certifications: ISO 45001, ISO 9001

Website technology

Website

WordPress

Public procurement

1 tender recorded as contractor, with a total value of $47,910.

Publication date	Subject	Amount	Contracting authority
Jan 25, 2022	“Boiler room and central heating and hot water system monitoring and operation services in the residential building at ul. Łukasińskiego 32 in Kłodzko”.	$47,910$47,910	Gmina Miejska Kłodzko

Authorized Representatives

Jolanta Aleksandra Suława – President of the Management Board

Tomasz Przemysław Sierżant – Management Board Member

Manner of representation

The management board is authorised to perform legal acts on behalf of the company; each member of the management board may act independently on its behalf.

Supervisory board

Michał Gacek – Supervisory Board Member

Monika Stypułkowska – Supervisory Board Member

Nicolai Werner – Supervisory Board Member

Ownership

Owner	Shares	Share value	Stake
E.On Energy Infrastructure Solutions Polska sp. z o.o.	119	$17,558.08	100%

Beneficial owners

Person	Rights

Subsidiaries

	Name	Share value	Stake
	DZT Service & Heatsp. z o.o.	28,363.05 USD	100%
	DZT Południesp. z o.o.	5,402.49 USD	100%

Bank accounts

Registered as a VAT taxpayer on 1993-07-05.

ING Bank Śląski
40 1050 1908 1000 0024 1651 8427
ING Bank Śląski
34 1050 1142 1000 0023 2071 0433
ING Bank Śląski
02 1050 0086 1000 0023 2616 8032

Debt

No entries in the National Debtors Register (KRZ).

Public aid

17 public aid cases recorded, with a total value of $194,310.

Grant date	Purpose	Gross amount	Granting body
Dec 9, 2025	De minimis aid (in accordance with Commission Regulation 2023/2831)	$10,885$10,885	Prezes Zarządu WFOŚiGW we Wrocławiu
Feb 7, 2025	De minimis aid (in accordance with Commission Regulation 2023/2831)	$8,860$8,860	Wrocławska Agencja Rozwoju Regionalnego S.A.
Nov 29, 2024	De minimis aid (in accordance with Commission Regulation 2023/2831)	$7,367$7,367	Fundacja Incept

European Funds

Start	Project	EU co-financing	Programme
2018-05-02	Modernisation of the district heating network in ducts using a pre-insulated pipe system in Jaszkowa Dolna	$32,601$32,601	Regional Operational Programme for the Lower Silesian Voivodeship 2014-2020

Regulatory authorisations

Authority	Type	Status
BDO	BDO register entry	Active

Competitors

	Name	Revenue	Website
	Przedsiębiorstwo Energetyki Cieplnejsp. z o.o.	$16,346,006.23	pecsieradz.pl

Change history

Date	Event
2017-10-03	Address change (Wałbrzyska 7a, 58-160, Świebodzice → Ul. Mieszka I 13, 58-160, Świebodzice)
2009-03-18	Name change ("fortum Dzt Service Spółka Z Ograniczoną Odpowiedzialnością" → Dzt Service)
2006-12-13	Address change (Mieszka I 13, 58-160, Świebodzice → Wałbrzyska 7a, 58-160, Świebodzice)
2004-05-04	Name change ("przedsiębiorstwo Wielobranżowe Dzt Building Spółka Z Ograniczoną Odpowiedzialnością" → "fortum Dzt Service Spółka Z Ograniczoną Odpowiedzialnością")
2002-04-16	Entered in the register

FAQ

Last updated: 2026-10-04