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Heating5 services Ventilation2 services Cooling2 services Gas4 services Water2 services Controls1 service Service6 services Design2 services

Home heating systems All →

Air-to-water heat pumpsfrom 8 000 €An air-to-water heat pump heats your home through underfloor heating or radiators and… Air-to-air heat pumpsfrom 800 €An air-to-air heat pump heats in winter and cools in summer. It is… Ground-source heat pumpsfrom 4 000 €A ground-source heat pump takes heat from the ground through a horizontal collector… Gas boiler installation and replacementfrom 60 €A condensing gas boiler is a compact, reliable source of heating and hot… Heating system installationA heating system is more than the heat source. Comfort and bills depend…

Ventilation and heat recovery All →

Heat recovery ventilationA heat recovery unit supplies fresh filtered air to bedrooms and the living… HVAC design and installationHVAC means heating, ventilation and air conditioning working as one system. We design…

Cooling and air conditioning All →

Air conditioner selection and installationfrom 800 €Air-conditioner capacity depends on more than floor area: window size and orientation, floor,… Multi-split systemsA multi-split system cools and heats several rooms with one outdoor unit –…

Gas connection and pipework All →

Gas connection to a housefrom 20 €A gas connection has several stages: application to ESO and connection conditions, design,… Gas pipeline designThe gas design is prepared according to ESO connection conditions and covers the… Gas pipeline installation and handoverfrom 20 €We install external PE gas pipelines, meter cabinets and internal pipework, carry out… LPG cylinder systemsfrom 2 000 €Where there is no gas network, a house can be heated with propane…

Hot water and water quality All →

Domestic hot waterHot water can be prepared instantly by a boiler, from a cylinder or… Water system disinfection and qualityA contaminated water system may carry bacteria, sediment and odours. We disinfect the…

Controls and smart control All →

Heating controls and smart controlfrom 50 €Good controls let the system heat exactly as much as needed: by outdoor…

Service and maintenance All →

Gas boiler servicingfrom 40 €Annual boiler servicing keeps combustion safe, efficient and within warranty. We clean and… Boiler commissioning and tuningThe first start-up determines how the boiler will run all year: combustion tuning,… Heat pump servicingA clean outdoor unit, correct pressure and settings mean lower electricity bills. We… Heating system chemical flushingfrom 90 €Sludge, sediment and magnetite narrow the pipes and block the heat exchanger and… Heating system efficiency improvementA common story: one room too hot, another cold, and the bill high.… Warranty and after-warranty servicefrom 40 €We service the equipment we installed during warranty and after it. The full…

Design and consultations All →

Engineering consultationBefore buying equipment it pays to talk to an engineer: which system suits… Heating for commercial and industrial sitesfrom 4 000 €Warehouses, production and commercial premises need different calculations: large volumes, doors, process heat,…

Our projectsHome heating systems

New houseBuilding a house? Plan the engineering before plastering: where…

RenovationRenovation is the best time to change the heat…

Older houseIn an older house the key is a correct…

ApartmentIn apartments we usually solve cooling, air-to-air heating, boiler…

Summer houseSummer houses often have no gas network and limited…

Commercial propertyOffices, retail, hospitality – HVAC design, cascade plant rooms…

Industrial siteHeating, ventilation and gas systems for production and storage,…

Replacing an old systemNew boiler or heat pump? Compare scenarios for your…

System not working wellCold radiators, dropping pressure, high bills? The diagnostics wizard… PRODevelopers, architects, industry

3D studioShow what is hidden inside the house

Rotate, X-ray and explore the house layer by layer: heating, ventilation, cooling, gas, water, controls.

ConfiguratorAnswer a few questions and get 2–3 potential solutions… ComparisonGas, air-to-water, air-to-air, ground source, LPG – for your… Heat pump sizeNot by m² – by energy class, insulation, location,… Heat lossQuick or room-by-room – where the house loses the… Ventilation plannerAirflows per room, supply and extract zones, unit size,… AC capacityArea, windows, orientation, people, equipment – preliminary capacity and… EstimateBuild a package – heating, ventilation, cooling, hot water… Gas connectionInteractive gas connection process: from the ESO application to… LPG system 3DCabinet, cylinder groups, automatic changeover, GSM, leak detector –… 3D equipmentHeat pump, boiler, HRV, AC, LPG in 3D DiagnosticsChoose symptoms – see likely causes and the right… Report a faultPhoto, error code, status tracking

Service and maintenance

Gas boiler servicingfrom 40 €Boiler commissioning and tuningHeat pump servicingHeating system chemical flushingfrom 90 €Heating system efficiency improvementWarranty and after-warranty servicefrom 40 €

Act now

Report a faultWith photo and error code DiagnosticsLikely causes in 1 minute

Heating problems

Radiators not heating or warm only at the top Underfloor heating heats unevenly Boiler pressure keeps dropping Heating system is noisy or bubbling Heating bills went up All problems →

Care plans

BASICEquipment passports and reminders CAREAnnual maintenance CARE+Priority and several systems

Equipment passportEvery service visit is saved in your portalMy home

Projects PRO Knowledge Prices

LT EN +370 699 13555 My home

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Qualifications

Certificates

We publish only valid documents. Gas installation certificates are provided on request and with the quote.

Fluorintų šiltnamio efektą sukeliančių dujų tvarkymo atestatas — Fluorinated greenhouse gas handling certificateAllows installation and servicing of heat pumps and air conditioners.

Šilumos siurblių ir vėdinimo sistemų asociacijos nario pažymėjimas — Heat Pump and Ventilation Systems Association membership certificateMembership certificate No. 013.

The house is a system. See how it will work – then we build it.

Heating, ventilation, cooling and gas – design, installation and maintenance across Lithuania.

info@inzinerijosslenis.ltUkmergės g. 285, LT-06318 VilniusMon–Fri 8:00–17:00

Systems

Home heating systems Ventilation and heat recovery Cooling and air conditioning Gas connection and pipework Hot water and water quality Controls and smart control Service and maintenance Design and consultations Equipment and manufacturers

Tools

3D studio Configurator Comparison Heat pump size Heat loss Ventilation planner AC capacity Gas connection LPG system 3D Diagnostics Estimate PRO 3D equipment

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Tools

3D studio Configurator Comparison Heat pump size Heat loss Ventilation planner AC capacity Gas connection LPG system 3D Diagnostics Estimate PRO 3D equipment

Solutions

New house Renovation Older house Apartment Summer house Commercial property Industrial site Replacing an old system System not working well

Company

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What do you need?

Report a faultPhoto, error code, tracking Build my systemAnswer a few questions and get 2–3 potential solutions with reasons and a 3D view.

Engineering consultantKnows the whole site · calculates · an engineer confirms decisions

Hello! I know everything on this site – services and prices, heat pumps, gas, boilers, ventilation, air conditioning, maintenance and faults – and I can calculate a first estimate for your house. Ask anything: