- Credit score:
- Reliable
- Reputation score:
- 44,110
- Employees:
- 266
- Forecast turnover (2026):
- 97,564,829 €
Durable, economical and smart solutions!
TREV-2 Group is a company focused on the construction and maintenance of infrastructure objects and facilities.
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maintenance of public roads
-
construction of gas installation
-
production and installation of asphalt
-
maintenance
-
sanitation
-
installation
-
maintenance
-
installation work
-
audit of construction works
-
expert assessment of building design documentation
-
construction research
-
making of traffic management projects
-
pressure equipment works
-
construction of roads and bridges
-
tea care
-
environmental construction
-
mining of mineral resources
-
traffic management
-
road project management
-
project management of bridges
-
building equipment rental
-
car wash service
-
building
-
construction
-
design
-
construction work
-
repair work
-
repair
-
rebuilding
-
the warehouse
- Credit score:
- Reliable
- Reputation score:
- 31,520
- Employees:
- 142
- Forecast turnover (2026):
- 129,197,922 €
We create a complete living environment!
The construction company Nordecon AS, founded in 1989, has grown to become one of the largest construction groups in Estonia.
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maintenance of public roads
-
construction of facilities
-
maintenance
-
a
-
installation
-
construction of buildings
-
construction of warehouses
-
building construction works
-
construction
-
construction and real estate
-
construction and real estate services
-
building construction firms
-
geodesic services
-
shadow production process
-
maidla production
-
design
-
investing services
-
engineering
-
heritage conservation
-
fire safety
-
construction
-
expert assessment of building design documentation
-
construction research
-
inspection and maintenance
-
making of traffic management projects
-
rental workforce mediation
-
design, construction and maintenance of fire safety
-
terraces
-
repair
-
apartment buildings
- Credit score:
- Reliable
- Reputation score:
- 14,990
- Employees:
- 38
- Forecast turnover (2026):
- 18,909,608 €
Water supply and sewage works
We have built outdoor networks both within the boundaries of a private owner's property and on city streets and other public lands. We also offer external network design services.
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installation
-
water pipeline installation
-
construction of external networks
-
construction of internal networks
-
construction of sewer lines
-
construction and real estate
-
construction and real estate services
-
building construction firms
-
energy and mineral resources
-
heating
-
heating solutions
-
mineral resources and natural resources
-
equipment and machinery
-
general and home services
-
construction
-
construction
-
sewer accessories
-
trackwork
-
logistics
-
internal networks
-
customers
-
sanitation
-
solutions
-
buildings
-
apartment buildings
-
shopping centres
-
private houses
-
office buildings
-
heating systems construction
-
objects
- Credit score:
- Reliable
- Reputation score:
- 8,310
- Employees:
- 46
- Forecast turnover (2026):
- 2,135,463 €
Installation of sanitary equipment
sanitation, heat pumps installation, water supply and sanitation works, Design, Installation, Design and installation, private houses, santechnical works, sprinkler, sewer works
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installation of heat pumps and air conditioners
-
water supply and sanitation works
-
heat pumps installation
-
water supply and sanitation works
-
sanitation
-
maintenance
-
installation of sanitary equipment
-
fire safety
-
construction
-
cooling and air conditioning systems, heat pumps
-
inspection and maintenance
-
design, construction and maintenance of fire safety
-
complete solutions of the outer shell of the building
-
outsourcing
-
metal cladding
-
ventilation work
-
sprinkler and firefighting
-
systems design
-
design
-
installation
-
design and installation
-
private houses
-
tallinn
-
santechnical works
-
sewer works
-
sprinkler
- Credit score:
- Reliable
- Reputation score:
- 6,220
- Employees:
- 15
- Forecast turnover (2026):
- 5,276,101 €
Installation of air conditioning systems
Boilers, energy and mineral resources, heating, heating solutions, Equipment and machinery, Construction, Construction, Construction of gas installation, gas works, cooling and air conditioning systems, heat pumps
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heating
-
construction of gas installation
-
air to water heat pumps
-
air water heat pumps
-
installation of air conditioning systems
-
boilers
-
energy and mineral resources
-
heating solutions
-
equipment and machinery
-
construction
-
construction
-
gas works
-
cooling and air conditioning systems, heat pumps
-
if your home is your fortress, the barn-nord will make your home a 21st century fortress. we offer the widest range of modern heat pumps (soil heat pumps, air-water heat pumps).
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need a heating or cooling solution for a larger project than a private house? no problem, the barn-nord has the necessary technical know-how and experience.
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after-service of heat pumps
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ground source heat pumps
-
accessories
-
entrust the supervision of your heating systems to experts. we have a corresponding cold work license and our specialists regularly attend factory-side training.
-
modern equipment
-
cooling solutions
-
heating solutions
-
indoor climate
-
heat pump
-
tallinn
-
tartu
-
heat pumps
-
training
-
consultation and advisory
-
collectors
- Credit score:
- Reliable
- Reputation score:
- 5,460
- Employees:
- 24
- Forecast turnover (2026):
- 4,719,819 €
Comprehensive solutions for technical systems
HEARUM offers energy-efficient and coordinated technical system solutions for buildings. We help bring together heating, ventilation, cooling, water supply and electrical systems.
- Credit score:
- Reliable
- Reputation score:
- 5,340
- Employees:
- 25
- Forecast turnover (2026):
- 4,300,336 €
Roofing
foundation insulation, slate stones, hydrotechnical works, Roof bollards, replacement of roof cover, installation of roof systems, Roof construction, roof renovation, roof maintenance, roof repair
-
replacement of roof cover
-
installation of roof systems
-
roofing
-
roof
-
maintenance
-
insulation of roof
-
installation work
-
roofing
-
construction and real estate
-
building construction firms
-
hydrotechnical works
-
roof bollards
-
roof construction
-
roof renovation
-
roof maintenance
-
roof repair
-
bitumen roll materials
-
slate stones
-
stain roofs
-
cement fibre plates
-
gutter systems
-
vile roof coverings
-
flat roof coverings
-
flat roof construction
-
hydroinsulation
-
repair and maintenance
-
building
-
design
-
warm-up
-
renovation
- Credit score:
- Reliable
- Reputation score:
- 4,960
- Employees:
- 7
- Forecast turnover (2026):
- 4,023,640 €
Pipeline and heating installation
ventilation, bosch climate engineering, City Climate, heating solution, balancing the heating system, ground heat, ground source heat pump, Smart Management, solar heating, underfloor heating
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air to water heat pump
-
air water heat pump
-
sanitation
-
installation of radiant floor heating
-
installation of soil collector
-
maintenance of heat pumps
-
ventilation
-
bosch climate engineering
-
city climate
-
heating solution
-
balancing the heating system
-
ground heat
-
ground source heat pump
-
smart management
-
solar heating
-
underfloor heating
-
the heat center
-
heat pump maintenance
-
thermia
-
air to air heat pump
-
heat pumps
-
sewerage
-
installation
-
floor pouring
-
excavation work
-
question
-
ground source heat pumps
-
radiator heating
-
cooling
-
indoor climate
- Credit score:
- Reliable
- Reputation score:
- 4,610
- Employees:
- 27
- Forecast turnover (2026):
- 3,012,358 €
Installation of electrical equipment
Repair of electric motors, construction machinery and tools, expert assessments, electrical equipment, Energy, energy and mineral resources, heating, Laboratories, machinery and tools, Measuring equipment and work
-
heating
-
means of communication and supplies
-
connection of equipment
-
installation of electrical networks
-
calibration
-
repair of electric motors
-
installation of electrical equipment
-
construction and real estate
-
construction machinery and tools
-
expert assessments
-
electrical equipment
-
energy
-
energy and mineral resources
-
laboratories
-
machinery and tools
-
measuring equipment and work
-
state and society
-
communication
-
research institutions
-
outdoor lighting
-
general and home services
-
device work
-
conformity assessment body
-
electrical works
-
automation
-
comprehensive technical solutions
-
electric laboratory
-
electrical tests
-
high-safety work
-
street lighting construction and maintenance
- Credit score:
- Reliable
- Reputation score:
- 4,200
- Employees:
- 12
- Forecast turnover (2026):
- 1,208,451 €
Warmth and Comfort, Engineered to Last.
We specialize in the design, construction, and maintenance of heating systems, boiler houses, and water supply networks, ensuring efficient energy use and comfort for our clients.
-
heating
-
boiler house construction
-
ground source heat pump installation
-
water pipeline installation
-
construction of boiler house
-
installation of water pipeline
-
maintenance
-
installation of sanitary equipment
-
energy and mineral resources
-
heating solutions
-
equipment and machinery
-
construction
-
construction
-
boiler houses
-
central heating systems
-
thermal equipment
-
ground heating
-
heat node solution
-
sewer
-
water supply
-
diamond drilling
-
heat nodes
-
sewerage
-
eco-friendly ground heating
-
renewable heating
-
sewer construction and maintenance
-
environmentally friendly water solutions
-
industrial water services
-
thermal equipment installation
-
custom machine solutions
- Credit score:
- Reliable
- Reputation score:
- 4,020
- Employees:
- 12
- Forecast turnover (2026):
- 6,275,150 €
Warmth for Today, Energy for Tomorrow!
We offer a comprehensive range of services including the sale and installation of heat pumps, ventilation systems, and regular maintenance.
-
sale and installation of equipment
-
air to water heat pumps
-
heat pump installation
-
air water heat pumps
-
installation of air conditioning systems
-
heat pumps
-
ventilation
-
regular maintenance
-
installation
-
consulting
-
documentation
-
project management
-
heat pump maintenance
-
ventilation systems
-
ground source heat pumps
-
custom heating solutions
-
energy-efficient heating
-
industrial heat pumps
-
cleanroom technology
-
data center cooling equipment
-
heat distribution solutions
-
geothermal collectors
-
solar heating systems
-
heat pump consulting services
-
regular maintenance
-
consultations
-
ground heat
-
air / water
-
industrial
-
hybrid systems
- Credit score:
- Reliable
- Reputation score:
- 3,900
- Employees:
- 7
- Forecast turnover (2026):
- 577,991 €
Installation of sanitary equipment
balancing heating systems, heating solutions, Plumbing and fittings, Water Systems, Washing of heating systems, Construction, Construction, plumbing services, Water floor heating, Replacement of shutters
-
water systems
-
water floor heating
-
sanitary equipment installation
-
maintenance
-
sanitation
-
water and sewerage
-
installation of water floor heating
-
installation of sanitary equipment
-
construction and real estate
-
heating solutions
-
plumbing and fittings
-
general and home services
-
construction
-
construction
-
plumbing services
-
replacement of shutters
-
sewer construction
-
washing of heating systems
-
balancing the heating system
-
tube replacement
-
repair and cleaning
-
elimination of blockages
-
heating system construction
-
renovation and maintenance
-
shift of trousers
-
sewerage
-
installation
-
floor
-
renovation
-
sewer system
- Credit score:
- Reliable
- Reputation score:
- 3,890
- Employees:
- 16
- Forecast turnover (2026):
- 1,149,450 €
Special construction work
plumbing services, Freesping Work, Welding, finishing works, Betonation, Construction work, repair works, painting works, roofing, interior finishing
-
roofing
-
roofing and cladding
-
roofing
-
installation
-
maintenance
-
installation of roof insulation
-
plumbing services
-
freesping work
-
welding
-
finishing works
-
betonation
-
construction work
-
repair works
-
painting works
-
interior finishing
-
turning
-
turning on milling machines
-
construction
-
foundations and concreting
-
metal construction manufacturing
-
repair
-
building
-
concrete works
-
customers
-
tallinn
-
facade work
-
foundations
-
welding work
-
oils
-
metalwork
- Credit score:
- Borderline
- Reputation score:
- 3,850
- Employees:
- 21
- Forecast turnover (2026):
- 2,098,110 €
Installation of sanitary equipment
water supply, heating solutions, Sewer systems, water mains, floor heating, water-measuring nodes, Plumbing, draining, wastewater disposal, heating elements
- Credit score:
- Reliable
- Reputation score:
- 3,680
- Employees:
- 9
- Forecast turnover (2026):
- 1,233,947 €
Construction of sewer lines
sanitation, construction of pipe pipe, establishment of fire water storage facilities, construction of pumping stations, construction of jars, construction of sewerage system, construction firm, handling, sewer system construction, sanitation services
-
construction of public water supply
-
water supply
-
pumps
-
installation of water and waste water tanks
-
construction of pumping stations
-
sanitation
-
installation
-
construction of storm water pipeline
-
construction
-
construction
-
sewer works
-
pipes
-
seated fields
-
reservoirs
-
sewer systems
-
in-plot water supply
-
oil and fat trappers
-
construction of drainage pipelines
-
rainwater pipeline
-
establishment of seepage fields
-
construction of pipe pipe
-
establishment of fire water storage facilities
-
construction of jars
-
construction of sewerage system
-
construction firm
-
handling
-
renovation
-
building and renovation
-
sanitation services
-
sewer system construction
- Credit score:
- Reliable
- Reputation score:
- 3,650
- Employees:
- 7
- Forecast turnover (2026):
- 576,337 €
Installation of air conditioning systems
homect, ventilation, air conditioner, cooling, cooling device, maintenance of cooling equipment, Climate, air conditioning, bag filter, repair of geothermal pump
-
air water heat pump
-
air-water
-
air to water heat pumps
-
installation of ground heat pump
-
heat pump installation
-
air water heat pumps
-
construction and real estate
-
ventilation
-
air conditioner
-
cooling
-
cooling device
-
maintenance of cooling equipment
-
climate
-
air conditioning
-
bag filter
-
repair of geothermal pump
-
repair of heat pumps
-
vent
-
repair of ventilatory
-
ventilation construction
-
ventilation filters
-
ventilation maintenance
-
air heat pump
-
cooling and air conditioning systems, heat pumps
-
climate control maintenance
-
climate control installations
-
air conditioning units
-
heating solutions
-
repair of heating systems
-
ground source heat pump installation
- Credit score:
- Reliable
- Reputation score:
- 3,510
- Employees:
- 4
- Forecast turnover (2026):
- 328,171 €
Wholesale of water and heating equipment
technical maintenance, Energy, energy and mineral resources, Construction and maintenance of energy systems, Commercial equipment and consumables, central heating systems, heating, heating solutions, Equipment and machinery, Construction
-
heating
-
construction of gas installation
-
water boilers
-
air to water heat pumps
-
design of cvd parts
-
wholesale of water and heating equipment
-
construction and real estate
-
energy
-
energy and mineral resources
-
construction and maintenance of energy systems
-
commercial equipment and consumables
-
central heating systems
-
heating solutions
-
equipment and machinery
-
construction
-
construction
-
audit of construction works
-
expert assessment of building design documentation
-
gas works
-
accumulation tanks
-
spare parts for steam boilers
-
steam equipment
-
boilers
-
energy equipment
-
gas boilers
-
calorifers
-
container boiler houses
-
elements of heating systems
-
design of heating systems
-
ground source heat pumps
- Credit score:
- Reliable
- Reputation score:
- 3,490
- Employees:
- 10
- Forecast turnover (2026):
- 676,509 €
Roofing
measurement of gutters, rain gutter installation, Repair of gutters, roof safety products, Rainwater drainage, maintenance and cleaning of gutters, construction of stormwater drainage systems, measurement of gutters, acquisition of materials for gutters, installation of rain water gutters
-
rain gutter installation
-
installation of rain water gutters
-
installation of drainage system
-
installation
-
maintenance
-
rainwater systems installation
-
installation of rain gutters
-
construction and real estate
-
repair of gutters
-
roof safety products
-
rainwater drainage
-
maintenance and cleaning of gutters
-
construction of stormwater drainage systems
-
measurement of gutters
-
acquisition of materials for gutters
-
design of drainage system
-
procurement of drainage pipes and filters
-
snow barriers
-
roof rails
-
safety clothing for use on the roof
-
rainwater gutters
-
roofing products
-
stormwater drainage construction
-
color selection
-
security products
-
sales
-
materials
-
roof
-
personal approach
-
roof ladders
- Credit score:
- Reliable
- Reputation score:
- 3,460
- Employees:
- 8
- Forecast turnover (2026):
- 1,188,227 €
Repair of machinery and equipment
air conditioning equipment sales, energy and mineral resources, Commercial equipment and consumables, maintenance and repair of household appliances, air conditioning units, heating, heating solutions, Equipment and machinery, cooling and air conditioning systems, heat pumps, Refrigerating appliances
-
air to water heat pumps
-
air-air and air-water heat pumps
-
repair, maintenance and installation of heat pumps
-
installation
-
air water heat pumps
-
construction and real estate
-
energy and mineral resources
-
commercial equipment and consumables
-
maintenance and repair of household appliances
-
air conditioning units
-
heating
-
heating solutions
-
equipment and machinery
-
cooling and air conditioning systems, heat pumps
-
refrigerating appliances
-
ground heating
-
air-to-air heat pumps
-
remont of software, care, packaging
-
remon and care of idukite climic device
-
water cyclic technicals
-
filling, maintenance and repair of air-conditioning systems for vehicles
-
maintenance and repair of refrigerated vehicles
-
commercial cold technology
-
cold technology
-
repair
-
air conditioning
-
sales
-
maintenance
-
air heat pump
-
repair and maintenance
- Credit score:
- Reliable
- Reputation score:
- 3,400
- Employees:
- 8
- Forecast turnover (2026):
- 1,065,143 €
Installation of air conditioning systems
energy and mineral resources, heating, Equipment and machinery, Gas boiler maintenance, Repair of gas boiler, Washing the heating system, Viessmann Gas Boilers, Gas boiler, Viessmann, Sale of gas boiler
-
heating
-
installation of gas boiler
-
construction of gas installation
-
hot water boilers
-
installation
-
installation of air conditioning systems
-
energy and mineral resources
-
equipment and machinery
-
gas boiler maintenance
-
repair of gas boiler
-
washing the heating system
-
viessmann gas boilers
-
gas boiler
-
viessmann
-
sale of gas boiler
-
gas works
-
accumulation tanks
-
room thermostats
-
gas condensation boilers
-
solar systems
-
heat pumps
-
handling of gas boilers
-
maintenance of boilers
-
warranty repair
-
setup
-
accidents and challenges 24h
-
advice on the construction of heating systems
-
gas boiler spare parts
-
heatpump
-
vitocal