- 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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sanitation
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installation
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sewer system
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maintenance of public roads
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audit of construction works
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expert assessment of building design documentation
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construction research
-
construction of gas installation
-
making of traffic management projects
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pressure equipment works
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construction of roads and bridges
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tea care
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environmental construction
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mining of mineral resources
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traffic management
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road project management
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project management of bridges
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production and installation of asphalt
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building equipment rental
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car wash service
-
building
-
construction
-
design
-
construction work
-
maintenance
-
repair work
-
repair
-
rebuilding
-
the warehouse
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noise barrier walls
- Credit score:
- Reliable
- Reputation score:
- 42,410
- Employees:
- 234
- Forecast turnover (2026):
- 52,711,694 €
Machining of metals
electric cabinets, Wiring sets, Plastic components, Production of series, system solutions, Control systems, custom panels, installation service, Cable sets, Electromechanics
- Credit score:
- Reliable
- Reputation score:
- 38,880
- Employees:
- 157
- Forecast turnover (2026):
- 97,801,989 €
Construction of electricity and communications networks
construction and installation of cable lines in data communication networks, design of external data networks, design and construction of substations, construction and installation of cable lines, construction and maintenance of overhead lines, troubleshooting and regular maintenance, design and construction of external data networks, construction of connecting lines and substations, construction and installation of electrical and communication lines, design and construction of wind, solar and hybrid parks
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construction of cable tracks
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construction and installation of cable lines
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construction and installation of cable lines in data communication networks
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maintenance of systems, search and repair of faults
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high voltage networks
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low and medium voltage networks
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telecommunications networks
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gas networks
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geodesy and design
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high voltage laboratory
-
green energy
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construction of substations
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design of gas stations
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design of utility networks and utility works
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preparation of a work project
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elimination of malfunctions
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design of external data networks
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design and construction of substations
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construction and maintenance of overhead lines
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troubleshooting and regular maintenance
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design and construction of external data networks
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construction and maintenance of overhead lines in data communication networks
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regular maintenance of external data networks and elimination of malfunctions
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design and construction of wind, solar and hybrid parks
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construction and installation of electrical and communication lines
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construction of connecting lines and substations
-
construction of electricity and communications networks
- 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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sanitation
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installation
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heating systems construction
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construction and real estate
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construction and real estate services
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building construction firms
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energy and mineral resources
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heating
-
heating solutions
-
mineral resources and natural resources
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equipment and machinery
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general and home services
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construction
-
construction
-
sewer accessories
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trackwork
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logistics
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internal networks
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customers
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solutions
-
buildings
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apartment buildings
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shopping centres
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private houses
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office buildings
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objects
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hotels
-
water pipeline installation
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public buildings
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high-quality construction
- Credit score:
- Reliable
- Reputation score:
- 9,530
- Employees:
- 44
- Forecast turnover (2026):
- 12,058,908 €
Installation of air conditioning systems
Non-residential property services, electrical installation works, Operation of heating systems, ventilation system inspection, Installation of road lighting, technical design services, Installation work of ventilation equipment, Installation of ventilation and air conditioning systems, Repair and maintenance services of cooling equipment, Repair and maintenance services of central heating appliances
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installation of cables and supporting structures for cable line bases
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technical systems
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technical systems maintenance
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building automation systems
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electrical systems
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installation of air conditioning systems
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construction
-
construction
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cooling and air conditioning systems, heat pumps
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rental workforce mediation
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design
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installation and switching of various electrical equipment
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working and emergency lighting, led downlight
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grounding and lightning protection
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external networks
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electric heating
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assembly and installation of force and control shields
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management systems for industrial and residential buildings
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electrical systems and automation
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air channel cleaning
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heat pumps
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welding work
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ventilation, cooling and heating systems
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heat pumps
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refrigerated appliances
- Credit score:
- Reliable
- Reputation score:
- 8,910
- Employees:
- 24
- Forecast turnover (2026):
- 14,408,109 €
Building construction works
Water supply pipe works, cooling system, Installation of doors, Installation work of fire alarm system, Construction work for entertainment centres, Warehouse construction work, Construction work for kindergartens, building finishing works, Construction work on buildings related to leisure, sports, culture, accommodation and restaurants, Installation work of electrical wiring and equipment
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construction and maintenance
-
cooling system
-
construction and real estate
-
construction and real estate services
-
building construction firms
-
construction
-
heritage conservation
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fire safety
-
construction
-
restoration
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reconstruction
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historical preservation
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apartment buildings
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school buildings
-
public buildings
-
general construction
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walls
-
apartment building
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solar energy panels
-
nurseries
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heat-recovery ventilation
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windows
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water floor heating
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roof
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additional fee
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measurements
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shooting range
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environmental conservation
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objects
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owner supervision
- Credit score:
- Borderline
- Reputation score:
- 7,110
- Employees:
- 46
- Forecast turnover (2026):
- 2,111,395 €
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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cooling and air conditioning systems, heat pumps
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systems design
-
installation
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fire safety
-
construction
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inspection and maintenance
-
design, construction and maintenance of fire safety
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complete solutions of the outer shell of the building
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outsourcing
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metal cladding
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ventilation work
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installation of heat pumps and air conditioners
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sprinkler and firefighting
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water supply and sanitation works
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heat pumps installation
-
water supply and sanitation works
-
design
-
design and installation
-
private houses
-
sanitation
-
tallinn
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maintenance
-
santechnical works
-
sewer works
-
sprinkler
-
installation of sanitary equipment
- Credit score:
- Reliable
- Reputation score:
- 5,700
- Employees:
- 9
- Forecast turnover (2026):
- 2,847,144 €
Furnishing Your Success!
We specialize in the provision and installation of high-quality furniture, lighting, and accessories for various spaces.
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drawing
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installation
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furniture installation
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boards
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cabinets and shelves
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soft seating furniture
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luminaires
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watches
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office accessories
-
outdoor furniture
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soundproof partitions
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shelving units
-
office furniture solutions
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ergonomic chairs
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executive desks
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meeting room tables
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office lighting fixtures
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decorative clocks
-
room acoustics improvement
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office technology equipment
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installation of furniture
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soft furniture
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driver's chairs
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workchairs
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saddle chairs
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couches
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soft seats
-
beds
-
driver's tables
-
meeting tables
- Credit score:
- Reliable
- Reputation score:
- 5,110
- Employees:
- 20
- Forecast turnover (2026):
- 3,323,631 €
Construction of electricity and communications networks
Energy, energy and mineral resources, heating, rental workforce mediation, Communications and computer networks, Construction of substations, construction of air and ground cable lines, stress work, installation of end and extension sleeves, switches
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construction of air and ground cable lines
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construction of grounding and lightning protection systems
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construction of lightning protection systems
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construction and maintenance
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outdoor lighting
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grounding systems
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energy
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energy and mineral resources
-
heating
-
rental workforce mediation
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communications and computer networks
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construction of substations
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stress work
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installation of end and extension sleeves
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switches
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construction of industrial automation
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control measurements of electrical installations
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control measurements of installations
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control measurements
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voltage works 0,4 to 20 kv
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installation of end and extension sleeves up to 52 kv
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communication lines
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industrial automation
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installation of end and extension sleeves 52 kv
-
design
-
electrical consultancy
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search and remediation of breakdowns
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electricity
-
installation work
-
building
- 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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sewerage
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installation
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cooling system
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sanitation
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cooling systems
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ventilation
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bosch climate engineering
-
city climate
-
heating solution
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balancing the heating system
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ground heat
-
ground source heat pump
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smart management
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solar heating
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underfloor heating
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the heat center
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heat pump maintenance
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thermia
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air to air heat pump
-
heat pumps
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air to water heat pump
-
floor pouring
-
excavation work
-
question
-
ground source heat pumps
-
radiator heating
-
cooling
-
indoor climate
-
warm node
-
heating system installation
- Credit score:
- Borderline
- Reputation score:
- 4,780
- Employees:
- 34
- Forecast turnover (2026):
- 3,055,384 €
Installation of electrical equipment
Building, outdoor lighting construction, design work, Design, Installation, maintenance, solar panels installation, electrical and low-current works, Solar Station, electrical measurements
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weak current systems
-
security systems
-
automation systems
-
electrical systems
-
low current systems
-
installation
-
design, construction and maintenance of fire safety
-
electricity and automation
-
design and installation
-
electrical measurement
-
fire alarm system
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strong current systems
-
electrical measurements
-
outdoor lighting construction
-
design work
-
design
-
maintenance
-
building
-
weak current electrical work
-
solar panels installation
-
solar station
-
electrical and low-current works
-
installation of electrical equipment
- Credit score:
- Reliable
- Reputation score:
- 4,330
- Employees:
- 4
- Forecast turnover (2026):
- 3,709,883 €
Installation of air conditioning systems
ventilation systems, Installation, maintenance, Products, Diamond Drilling, inspection, ventilation, periodic inspection, maintenance work, ventilation equipment sales
- Credit score:
- Reliable
- Reputation score:
- 4,190
- 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.
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central heating systems
-
installation
-
construction and maintenance
-
energy and mineral resources
-
heating
-
heating solutions
-
equipment and machinery
-
construction
-
construction
-
boiler houses
-
thermal equipment
-
boiler house construction
-
ground heating
-
heat node solution
-
sewer
-
water supply
-
diamond drilling
-
heat nodes
-
sewerage
-
eco-friendly ground heating
-
ground source heat pump installation
-
renewable heating
-
water pipeline installation
-
sewer construction and maintenance
-
environmentally friendly water solutions
-
industrial water services
-
thermal equipment installation
-
custom machine solutions
-
construction services
-
construction of boiler house
- Credit score:
- Reliable
- Reputation score:
- 4,100
- Employees:
- 11
- Forecast turnover (2026):
- 1,960,801 €
Installation of air conditioning systems
Sales, climate control systems, sun protection systems, Sound insulation, ventilation, energy-saving solutions, Installation, Tartu, smoke removal, maintenance
-
smoke extraction systems
-
daylighting systems
-
climate control systems
-
sun protection systems
-
installation
-
installation of air conditioning systems
-
construction and real estate
-
building and finishing materials
-
interior
-
machinery and tools
-
fire safety equipment
-
rescue equipment
-
security and surveillance services
-
lighting technology
-
fire safety
-
inspection and maintenance
-
design, construction and maintenance of fire safety
-
ventilation
-
energy-saving solutions
-
sales
-
sunscreen
-
tallinn
-
tartu
-
maintenance
-
smoke removal
- 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.
-
installation
-
ventilation systems
-
solar heating systems
-
hybrid systems
-
fläktgroup systems
-
heating system
-
installation of air conditioning systems
-
heat pumps
-
ventilation
-
regular maintenance
-
sale and installation of equipment
-
consulting
-
documentation
-
project management
-
heat pump maintenance
-
ground source heat pumps
-
air to water heat pumps
-
heat pump installation
-
custom heating solutions
-
energy-efficient heating
-
industrial heat pumps
-
cleanroom technology
-
data center cooling equipment
-
heat distribution solutions
-
geothermal collectors
-
heat pump consulting services
-
regular maintenance
-
consultations
-
ground heat
-
air / water
- 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
-
washing of heating systems
-
installation
-
sewer system
-
heating systems construction
-
heating systems renovation
-
balancing heating systems
-
construction and real estate
-
heating solutions
-
plumbing and fittings
-
general and home services
-
construction
-
construction
-
plumbing services
-
water floor heating
-
replacement of shutters
-
sewer construction
-
balancing the heating system
-
sanitary equipment installation
-
tube replacement
-
repair and cleaning
-
elimination of blockages
-
heating system construction
-
renovation and maintenance
-
shift of trousers
-
sewerage
-
floor
-
renovation
-
repair
-
heating system
- 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
-
sewer works
-
sewer systems
-
sanitation
-
installation
-
construction
-
construction
-
construction of public water supply
-
water supply
-
pipes
-
seated fields
-
reservoirs
-
pumps
-
in-plot water supply
-
installation of water and waste water tanks
-
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 pumping stations
-
construction of jars
-
construction of sewerage system
-
construction firm
-
handling
-
renovation
-
building and renovation
-
sanitation services
-
sewer system construction
-
construction of storm water pipeline
- Credit score:
- Reliable
- Reputation score:
- 3,670
- Employees:
- 3
- Forecast turnover (2026):
- 511,450 €
Warmth and Comfort, Expertly Delivered!
We provide expert installation, maintenance, and repair services for WOLF devices, ensuring their optimal performance and energy efficiency.
-
heating systems maintenance
-
wolf systems repair services
-
solar heating systems integration
-
installation
-
system updates
-
ventilation systems
-
solar heating systems
-
construction
-
construction
-
energy-saving heating solutions
-
climate control maintenance
-
wolf equipment maintenance
-
wolf device installation
-
professional equipment servicing
-
heating control units
-
gas installation a-category
-
certified gas repair services
-
hvac maintenance and repair
-
cooling systems technician level 3
-
wolf product sales and installation
-
energy efficiency
-
technological development
-
use of renewable energy
-
installation and repair of equipment
-
repair
-
heating solutions
-
maintenance
-
regular checks
-
set up efficiency
-
maintenance of equipment
- 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 conditioning
-
repair of heating systems
-
installation
-
air conditioning systems
-
refrigerating equipment systems
-
ground heating systems
-
ventilation systems
-
heating system
-
installation
-
construction and real estate
-
ventilation
-
air conditioner
-
cooling
-
cooling device
-
maintenance of cooling equipment
-
climate
-
bag filter
-
repair of geothermal pump
-
repair of heat pumps
-
vent
-
repair of ventilatory
-
ventilation construction
-
ventilation filters
-
ventilation maintenance
-
air water heat pump
-
air-water
-
air heat pump
-
cooling and air conditioning systems, heat pumps
-
climate control maintenance
-
climate control installations