43221Installation, maintenance and repair of heating, ventilation and air conditioning equipment

1,100 companies

This activity has special requirements (e.g. a licence or notice).

Largest companies by revenue

1.Aktsiaselts COMFORT AE
10170826, Paide linn
Revenue 2025
€13.5M
+2.8%
Net profit
€708.3K
+24%
Employees
49
2.aktsiaselts Pristis
10004826, Lasnamäe linnaosa
Revenue 2025
€13.5M
+6.6%
Net profit
€163.8K
−65%
Employees
123
3.Aktsiaselts Clik
10222262, Assaku alevik
Revenue 2025
€12.4M
−29%
Net profit
€849.2K
−16%
Employees
82
4.City Kliima OÜ
11471205, Lasnamäe linnaosa
Revenue 2025
€9.1M
+4.8%
Net profit
€14.9K
−97%
Employees
27
5.Zehnder Baltics OÜ
11892250, Haabersti linnaosa
Revenue 2025
€8.9M
+39%
Net profit
€265.6K
+170%
Employees
14
6.Fresh-Est OÜ
11310436, Kristiine linnaosa
Revenue 2025
€7.5M
+1.4%
Net profit
€372.1K
+41%
Employees
22
7.AS SKAT-KESKUS
10611957, Narva linn
Revenue 2025
€6.4M
+83%
Net profit
€650.3K
+64%
Employees
36
8.OÜ Element Grupp
11027491, Haabersti linnaosa
Revenue 2025
€6.3M
+4.3%
Net profit
€396.9K
−2.3%
Employees
14
9.osaühing Viljandi Õhumeister
10413938, Jämejala küla
Revenue 2025
€6.1M
+4.7%
Net profit
€142.6K
−51%
Employees
40
10.Abertson OÜ
10961433, Kesklinna linnaosa
Revenue 2025
€5.9M
−20%
Net profit
€1.5M
+133%
Employees
14

#	Company	Reg.	Revenue	Change	Net profit	Change	Employees
1	Aktsiaselts COMFORT AE 10170826, Paide linn	1997	€13,515,060 2025	+2.8%	€708,250	+24%	49 annual average (FTE)
2	aktsiaselts Pristis 10004826, Lasnamäe linnaosa	1995	€13,485,376 2025	+6.6%	€163,834	−65%	123 at quarter end
3	Aktsiaselts Clik 10222262, Assaku alevik	1997	€12,434,928 2025	−29%	€849,176	−16%	82 annual average (FTE)
4	City Kliima OÜ 11471205, Lasnamäe linnaosa	2008	€9,097,242 2025	+4.8%	€14,906	−97%	27 annual average (FTE)
5	Zehnder Baltics OÜ 11892250, Haabersti linnaosa	2010	€8,910,546 2025	+39%	€265,574	+170%	14 annual average (FTE)
6	Fresh-Est OÜ 11310436, Kristiine linnaosa	2006	€7,469,258 2025	+1.4%	€372,080	+41%	22 annual average (FTE)
7	AS SKAT-KESKUS 10611957, Narva linn	1999	€6,359,362 2025	+83%	€650,317	+64%	36 annual average (FTE)
8	OÜ Element Grupp 11027491, Haabersti linnaosa	2004	€6,255,014 2025	+4.3%	€396,852	−2.3%	14 annual average (FTE)
9	osaühing Viljandi Õhumeister 10413938, Jämejala küla	1998	€6,092,182 2025	+4.7%	€142,635	−51%	40 annual average (FTE)
10	Abertson OÜ 10961433, Kesklinna linnaosa	2003	€5,917,887 2025	−20%	€1,537,816	+133%	14 at quarter end

Includes

This class includes the installation, repair and maintenance of plumbing, heating and air-conditioning systems, including additions and alterations. This class includes: - installation, maintenance and repair of: heating systems (e.g. heat pumps, solar thermal collectors); furnaces, cooling towers; ventilation and air-conditioning equipment and ducts; gas fittings; steam piping - ductwork installation This class also includes: - installation of medical gas distribution systems in hospitals

Also includes

connecting of devices to the regional heating system installation of cooling systems for cooling buildings, installation of heat pumps for heating and cooling buildings, repair and maintenance of these devices (including extensions, modifications) installation of non-industrial boilers/ovens maintenance and repair of domestic hot-water boilers repair of central heating systems

Excludes

installation of electric baseboard heating, see 43211 camera inspections in air ducts, water and gas pipes, and other liquids without repair or installation, see 71209 maintenance and repair of industrial central heating systems, see 33111 installation, maintenance and repair of industrial air-conditioning and refrigeration equipment, see 33121 or 33201 electrical works connected with installation of solar energy collectors and electric baseboard heating, see 43211 chimney cleaning, see 81221