OÜ 1kelvin

Legal form:: Private limited company
Registry code:: 11863885
VAT no.:: EE101362964
Fiscal-year period:: 01.01 - 31.12
Established:: 05.01.2010 (16 y)
Capital:: 2 556 EUR
Address:: Tornimäe tn 3 // 5 // 7, Kesklinna linnaosa, Tallinn, Harju maakond, 10145
Status:: Registered

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Contacts

Phone:: +372 5259055
Phone:: +372 7330533
Email:: info@kelvin.ee
Website:: www.kelvin.ee

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Industries

CONSTRUCTION
Specialised construction activities
Electrical installation and plumbing and other construction installation works
4322 – Plumbing, heating and air-conditioning installation
Real estate activities
68201 – Renting and operating of own or leased real estate

Industry TOPNo. 7 of 198 companies

1.Aktsiaselts Magma17.6M €
2.aktsiaselts HIIEKO8.9M €
3.SOOJUSKESKUS OÜ4.5M €
4.OÜ EMEKAN4.4M €
5.AS HEARUM4.3M €
6.osaühing AGR4.2M €
7.OÜ 1kelvin4M €
8.aktsiaselts Sovek3.5M €
9.OÜ Donates3M €
10.Osaühing Sanbruno2.7M €

Main activity 4322 · turnover over the last 4 quarters

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VAT liability

VAT no.	Start	End
EE101362964	01.05.2010	-

Annual reports

Aggregate data

Year	Period	Submitted	Status
2025	01.01.2025 – 31.12.2025	13.05.2026	Valid	PDF
2024	01.01.2024 – 31.12.2024	30.06.2025	Valid	PDF
2023	01.01.2023 – 31.12.2023	22.04.2024	Valid	PDF
2022	01.01.2022 – 31.12.2022	26.04.2023	Valid	PDF
2021	01.01.2021 – 31.12.2021	21.06.2022	Valid	PDF
2020	01.01.2020 – 31.12.2020	12.04.2022	Valid	PDF
2019	01.01.2019 – 31.12.2019	30.06.2020	Valid	PDF
2018	01.01.2018 – 31.12.2018	05.07.2019	Valid	PDF
2017	01.01.2017 – 31.12.2017	16.05.2018	Valid	PDF
2016	01.01.2016 – 31.12.2016	20.04.2017	Valid	PDF
2015	01.01.2015 – 31.12.2015	03.08.2016	Valid	PDF
2014	01.01.2014 – 31.12.2014	01.06.2015	Valid	PDF
2013	01.01.2013 – 31.12.2013	06.06.2014	Valid	PDF
2012	01.01.2012 – 31.12.2012	21.03.2013	Valid	PDF
2011	01.01.2011 – 31.12.2011	30.09.2012	Valid	PDF
2010	13.01.2010 – 31.12.2010	30.06.2011	Valid	PDF

Unsubmitted declarations

No unsubmitted declarations found

No unsubmitted declarations as of 21.10.2026.

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Tax debt Reports Declarations Court decisions–Official announcements–TTJA decisions–Real estate3 .ee domains1 Licenses8 Regulations15 Public transactions32 Grants1 State aid–Public procurement3 Holdings in companies–Enforcement proceedings Payment orders

Tax data

Period	State taxes	Labour taxes	Taxable turnover	Employees
2026 Q3	143 510 €	71 166 €	1,12 M €−30,1%	14
2026 Q2	252 397 €	66 633 €	1,60 M €+191%	14
2026 Q1	112 487 €	79 183 €	549 441 €−27,9%	14
Total 2026:	508 394 €	216 982 €	3,27 M €
2025 Q4	87 024 €	66 267 €	762 070 €−7,4%	15
2025 Q3	116 016 €	78 612 €	822 561 €−31,2%	15
2025 Q2	106 533 €	73 409 €	1,20 M €+23,6%	15
2025 Q1	96 410 €	71 948 €	967 292 €+24,8%	16
Total 2025:	405 983 €	290 236 €	3,75 M €
2024 Q4	181 496 €	79 674 €	775 292 €−54,2%	16
2024 Q3	115 542 €	72 068 €	1,69 M €−10,6%	16
2024 Q2	112 578 €	64 936 €	1,90 M €−47,3%	17
2024 Q1	455 361 €	68 700 €	3,60 M €+89,6%	16
Total 2024:	864 977 €	285 378 €	7,97 M €
2023 Q4	210 665 €	62 833 €	1,90 M €+19,3%	16
2023 Q3	173 414 €	61 040 €	1,59 M €+8,7%	15
2023 Q2	165 537 €	52 795 €	1,46 M €+31,8%	16
2023 Q1	214 789 €	60 012 €	1,11 M €+46,8%	15
Total 2023:	764 405 €	236 680 €	6,07 M €
2022 Q4	99 832 €	67 679 €	757 007 €−46,6%	15
2022 Q3	124 826 €	63 073 €	1,42 M €−36,1%	15
2022 Q2	214 503 €	62 637 €	2,22 M €+114%	15
2022 Q1	132 336 €	61 437 €	1,04 M €+2,0%	15
Total 2022:	571 497 €	254 826 €	5,43 M €
2021 Q4	75 527,26 €	53 646,65 €	1,02 M €−43,6%	16
2021 Q3	145 251,80 €	52 389,09 €	1,80 M €+35,1%	16
2021 Q2	96 270,17 €	49 055,94 €	1,33 M €+20,8%	17
2021 Q1	105 506,10 €	40 946,43 €	1,10 M €+250%	17
Total 2021:	422 555,33 €	196 038,11 €	5,25 M €
2020 Q4	56 846,78 €	45 339,89 €	315 414,35 €−41,4%	16
2020 Q3	75 837,13 €	43 610,13 €	538 221,70 €−22,9%	17
2020 Q2	75 601,43 €	41 815,78 €	697 671,20 €−32,3%	22
2020 Q1	97 376 €	45 059 €	1,03 M €−34,3%	22
Total 2020:	305 661,34 €	175 824,80 €	2,58 M €
2019 Q4	105 294 €	43 942 €	1,57 M €+47,4%	21
2019 Q3	49 758 €	42 439 €	1,06 M €−23,8%	21
2019 Q2	92 228 €	39 719 €	1,40 M €+95,4%	19
2019 Q1	107 066 €	40 207 €	714 702 €+33,6%	20
Total 2019:	354 346 €	166 307 €	4,74 M €
2018 Q4	96 830 €	40 965 €	535 125 €−40,9%	19
2018 Q3	112 369 €	44 705 €	905 751 €+1,3%	18
2018 Q2	86 967 €	42 932 €	893 689 €−34,1%	21
2018 Q1	88 801 €	44 623 €	1,36 M €−27,5%	21
Total 2018:	384 967 €	173 225 €	3,69 M €
2017 Q4	146 939 €	39 345 €	1,87 M €+134%	21
2017 Q3	83 152 €	37 727 €	799 577 €−26,5%	20
2017 Q2	127 938 €	46 951 €	1,09 M €−24,5%	18
2017 Q1	114 119 €	56 271 €	1,44 M €−29,7%	21
Total 2017:	472 148 €	180 294 €	5,20 M €
2016 Q4	76 582 €	64 415 €	2,05 M €+1,9%	23
2016 Q3	146 467 €	63 224 €	2,01 M €−13,6%	23
2016 Q2	153 802 €	73 180 €	2,33 M €+8,9%	23
2016 Q1	209 140 €	67 212 €	2,14 M €+73,8%	23
Total 2016:	585 991 €	268 031 €	8,53 M €
2015 Q4	124 756 €	46 067 €	1,23 M €+8,7%	18
2015 Q3	41 477 €	42 391 €	1,13 M €−1,3%	18
2015 Q2	113 247 €	42 955 €	1,15 M €−2,2%	18
2015 Q1	70 425 €	43 944 €	1,17 M €	18
Total 2015:	349 905 €	175 357 €	4,68 M €

Revenue by industry

	2023	2024	2025
Plumbing, heating and air-conditioning installation	6 356 389 €	5 881 196 €	4 302 351 €
Renting and operating of own or leased real estate	10 800 €	9 150 €	11 400 €

Tax debts

No tax debt found

No tax debt as of 21.10.2026

Representatives

	Personal ID code
Allan Susi	37308XXXXXX	15.08.1973 (53)	Board member	31.01.2023	-
Virgo Soe	37802XXXXXX	24.02.1978 (48)	Board member	02.07.2014	-
Marko Smirnov	37411XXXXXX	02.11.1974 (51)	Board member	05.01.2010	-

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Shareholders

	Personal ID code
Allan Susi	37308XXXXXX	15.08.1973 (53)	Shareholder	434 EUR	16,98%	Sole ownership	25.09.2023	-
Kalle Esinurm	37606XXXXXX	19.06.1976 (50)	Shareholder	434 EUR	16,98%	Sole ownership	25.09.2023	-
Aido Vellend	37607XXXXXX	08.07.1976 (50)	Shareholder	434 EUR	16,98%	Sole ownership	25.09.2023	-
Icemark OÜ	16660945	25.01.2023 (3)	Shareholder	434 EUR	16,98%	Sole ownership	25.09.2023	-
Virgo Soe	37802XXXXXX	24.02.1978 (48)	Shareholder	434 EUR	16,98%	Sole ownership	25.09.2023	-

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Other persons

	Personal ID code
Marko Smirnov	37411XXXXXX	02.11.1974 (51)	Founder	05.01.2010	-

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Ultimate beneficial owners

	Personal ID code
Allan Susi	37308XXXXXX	15.08.1973 (53)	Member of higher governing body (board or supervisory board)	08.05.2026	-
Marko Smirnov	37411XXXXXX	02.11.1974 (51)	Member of higher governing body (board or supervisory board)	08.05.2026	-
Virgo Soe	37802XXXXXX	24.02.1978 (48)	Member of higher governing body (board or supervisory board)	02.10.2023	-

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Holdings in companies

No holdings in companies found

Company has no holdings in other companies

2026 Q3

Turnover

Amount: 1 118 449 €
Monthly average: 372 816 €
Per employee: 26 630 €
Equity ratio: 14 585,93%

Labour taxes

Turnover ratio: 6,36%
Tax ratio: 49,59%
Monthly average: 23 722 €
Per employee: 1 694 €

State taxes

Monthly average: 47 837 €
Turnover ratio: 12,83%

Estimated salary

Gross salary: 3 083 €
Net salary: 2 472 €

Aggregate data

Last 5 yrsAll

	2025	2024	2023	2022	2021	2020	2019
Current assets	579 318 €−58,0%	1 379 205 €−53,4%	2 960 950 €+115%	1 379 340 €+35,7%	1 016 610 €+21,6%	836 343 €−47,5%	1 593 357 €
Non-current assets	481 002 €+11,8%	430 316 €+9,5%	393 013 €+36,2%	288 450 €+21,8%	236 743 €+6,1%	223 114 €+464%	39 583 €
Total assets	1 060 320 €−41,4%	1 809 521 €−46,0%	3 353 963 €+101%	1 667 790 €+33,1%	1 253 353 €+18,3%	1 059 457 €−35,1%	1 632 940 €
Short-term liabilities	379 076 €−73,0%	1 402 870 €−47,7%	2 683 822 €+260%	746 186 €+3,2%	723 331 €+32,5%	546 014 €−43,4%	964 892 €
Long-term liabilities	9 974 €−25,0%	13 299 €−20,0%	16 623 €−16,7%	19 948 €−14,3%	23 272 €−12,5%	26 597 €+303%	6 604 €
Total liabilities	389 050 €−72,5%	1 416 169 €−47,6%	2 700 445 €+252%	766 134 €+2,6%	746 603 €+30,4%	572 611 €−41,1%	971 496 €
Share or stock capital	-	-	-	-	-	-	-
Retained earnings	390 540 €+57,9%	247 339 €+3,0%	240 244 €−52,3%	503 938 €+3,3%	487 765 €−25,9%	658 631 €+1,2%	651 077 €
Net profit	277 918 €+94,1%	143 201 €−65,1%	410 462 €+3,9%	394 906 €+2 342%	16 173 €+109%	-174 597 €−2 335%	7 811 €
Equity	671 270 €+70,7%	393 352 €−39,8%	653 518 €−27,5%	901 656 €+77,9%	506 750 €+4,1%	486 846 €−26,4%	661 444 €
Turnover	4 313 751 €−26,8%	5 890 346 €−7,5%	6 367 189 €+25,7%	5 066 531 €+4,6%	4 842 552 €+105%	2 367 807 €−48,9%	4 637 669 €
Profit margin	6,4%	2,4%	6,4%	7,8%	0,3%	-7,4%	0,2%

Financial ratios

	2022	2021
Profit and cash flow
EBITDA	-	-
Liquidity
Current ratio	1,8	1,4
Quick ratio	1,8	1,4
Cash ratio	0,7	0,3
Efficiency
Days sales outstanding (dso)	58,6	53,7
Asset turnover	3,5	4,2
Structure
Debt ratio	0,5	0,6
Profitability
Operating margin	7,8%	0,3%
Net profit margin	7,8%	0,3%
Return on assets (roa)	27,0%	1,4%
Return on equity (roe)	43,8%	3,2%

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Licences & notices


Notice of economic activity	FEH000834	Construction and maintenance	Valid	06.05.2024	-
Notice of economic activity	TST000307	Pressure-equipment works	Valid	18.10.2019	-
Notice of economic activity	TGT000532	Gas works	Valid	06.09.2019	-
Notice of economic activity	EEH004608	Construction	Valid	27.01.2010	-
Notice of economic activity	EEK000685	Building audit	Valid	27.01.2010	-

Regulations


Ä 10141037 / 12	25.09.2023	Entry – Amendment entry	-	Entered into force25.09.2023
Ä 10141037 / 11	02.09.2023	Entry – Amendment entry	-	Entered into force02.09.2023
Ä 10141037 / 10	03.03.2023	Negative entry order – deficiencies not remedied – Amendment entry	-	Entered into force24.03.2023
Ä 10141037 / M3	31.01.2023	Order to remedy deficiencies – Amendment entry	02.03.2023	Entered into force31.01.2023
Ä 10141037 / 9	31.01.2023	Entry – Amendment entry	-	Entered into force31.01.2023

Real estate

		Purpose
R. Tobiase tn 7 // 9 // 11, Kesklinna linnaosa, Tallinn, Harju maakondSpace: P124	6062 m²	Residential land 95%, Commercial land 5%
R. Tobiase tn 7 // 9 // 11, Kesklinna linnaosa, Tallinn, Harju maakondSpace: P125	6062 m²	Residential land 95%, Commercial land 5%
R. Tobiase tn 7 // 9 // 11, Kesklinna linnaosa, Tallinn, Harju maakondSpace: 9-31	6062 m²	Residential land 95%, Commercial land 5%

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Consumer Disputes Committee decisions

No consumer dispute committee decisions found

Company has not been issued consumer dispute committee decisions

Court decisions

No court decisions found

The company has no court decisions

Official announcements

No official announcements found

Company has no issued official announcements

Public transactions


21.09.2026	Tallinna Rakenduslik Kolledž	21 838,88 €Received	NON-CURRENT ASSETSVocational education
31.08.2026	Tallinna Rakenduslik Kolledž	42 982,12 €Received	NON-CURRENT ASSETSVocational education
07.08.2026	Aktsiaselts Ida-Tallinna Keskhaigla	31 000 €Received	NON-CURRENT ASSETSGeneral hospital services
30.07.2026	Tallinna Rakenduslik Kolledž	60 047 €Received	NON-CURRENT ASSETSVocational education
25.05.2026	Aktsiaselts Ida-Tallinna Keskhaigla	7 440 €Received	OPERATING EXPENSESGeneral hospital services

Funded projects


1kelvin OÜ passiivmaja tehnoloogiaalane nõustamine3.1.1701.10-0378	Innovatsiooniosakute toetusmeedeERDF · Ettevõtluse ja Innovatsiooni Sihtasutus	10.01.2011 – 01.05.20112007-2013	3 195,58 €	3 195,58 €	Completed

State aid

No state aid found

The company has not been granted state aid or de minimis aid

Public procurement contracts


28.01.2026End 27.07.2028	Reference number 303174 · Töövõtuleping_OÜ 1kelvin	Aktsiaselts Ida-Tallinna KeskhaiglaContracting authority	95 000 €	Concluded
24.09.2025End 23.09.2026	Reference number 298903 · Töövõtuleping_OÜ 1kelvin	Aktsiaselts Ida-Tallinna KeskhaiglaContracting authority	79 300 €	Concluded
15.09.2025End 14.09.2029	Reference number 297047 · RAAMLEPING OÜ 1kelvin	Aktsiaselts Lääne-Tallinna KeskhaiglaContracting authority	5 000 000 €	Concluded

.ee domains


kelvin.ee	Active	04.07.2010	07.01.2030

Enforcement proceedings

No enforcement proceedings found

Company has no active debts with bailiffs

Payment orders

No payment orders found

Company has no court-ordered payment orders

Data comes from public registers.