# Heat pumps

A heat pump is a modern heating device that obtains energy for heating not by burning fuel, but by extracting heat from the ambient air and transferring it to the house heating system and for domestic hot water preparation. This technology works on the principle of natural energy exchange: it takes heat from the environment (air, ground, or water) and transfers it inside the building. During the warm season, many of these systems can operate in the opposite direction – effectively cooling the premises like an air conditioner, so a single device ensures a comfortable microclimate in the home all year round.

Air-to-water heat pumps work similarly to a refrigerator, only in reverse – even at sub-zero outdoor temperatures, they are able to extract enough heat to efficiently heat radiators, underfloor heating, or supply hot water for domestic use.

Ground-source (also called geothermal) heat pumps extract heat not from the air, but from the ground heat accumulated in the earth, using underground collectors or vertical boreholes.

Air-to-air heat pumps (often simply called heat pump air conditioners) transfer heat from the outdoor air directly to the indoor air through an indoor unit, without an intermediate water heating system.

Investing in a heat pump is a long-term solution that not only reduces monthly heating costs but also increases the energy efficiency and value of the house. It ensures warmth, cooling, and hot water without any daily hassle.

## Products
- [Atlantic Alfea Extensa A.I. heat pump](https://jardis.lt/en/atlantic-alfea-extensa-ai-heat-pump.md): Atlantic Alfea Extensa A.I. is an air-to-water split-type heat pump series for home heating. This entry does not specify a particular capacity or configuration option, so it is essential to check the exact model code and technical data before ordering.
- [Atlantic Alfea Excellia A.I. TRI 11 heat pump](https://jardis.lt/en/atlantic-alfea-excellia-ai-tri-11-heat-pump.md): Atlantic Alfea Excellia A.I. TRI 11 is a three-phase air-to-water split heat pump for home heating and, with optional equipment, domestic hot water production or cooling. At +7°C outdoor air and +35°C flow water, its rated heating output is 10.8 kW.
- [Atlantic Alfea Extensa Duo A.I. heat pump](https://jardis.lt/en/atlantic-alfea-extensa-duo-ai-heat-pump.md): Atlantic Alfea Extensa Duo A.I. is an air-to-water split type heat pump series with an integrated domestic hot water preparation module. The specific capacity and configuration are not specified in this entry, so it is necessary to check the exact model code and manufacturer's documentation before ordering.
- [Atlantic ALFEA M DUO monobloc heat pump](https://jardis.lt/en/atlantic-alfea-m-duo-monobloc-heat-pump.md): Atlantic Alfea M Duo is a range of air-to-water monobloc heat pumps with an integrated domestic-hot-water solution. As this entry does not identify the exact output or model code, verify the technical parameters before ordering.
- [Gree Versati III SPLIT indoor unit (NHH generation)](https://jardis.lt/en/gree-versati-iii-split-indoor-unit-nhh-generation.md): Gree Versati III NHH is the indoor hydraulic unit for an air-to-water split system. It must be paired only with a compatible outdoor unit from the same range; confirm detailed technical parameters from the model code.
- [Gree Versati IV monobloc heat pump](https://jardis.lt/en/gree-versati-iv-monobloc-heat-pump.md): Gree Versati IV is a range of air-to-water monobloc heat pumps with the refrigerant circuit in the outdoor unit. This record does not identify a particular output version, so confirm performance and installation data from the exact model code.
- [Gree Versati IV SPLIT Heat Pump](https://jardis.lt/en/gree-versati-iv-split-heat-pump.md): Gree Versati IV Split is a range of air-to-water split heat pumps with separate outdoor and indoor hydraulic units. Confirm the particular output, supply, and component compatibility from the model code.
- [IGLU Aleut geothermal heat pump](https://jardis.lt/en/iglu-aleut-geothermal-heat-pump.md): IGLU Aleut is a Lithuanian-made range of inverter ground-to-water heat pumps. This record does not identify a particular output variant, so select exact performance and package contents for the building heat demand and the borehole or collector design.
- [IGLU Inuit air-to-water heat pump](https://jardis.lt/en/iglu-inuit-air-to-water-heat-pump.md): IGLU Inuit is a range of air-to-water heat pumps with a domestic-hot-water solution. As this entry has no exact model code, confirm the particular output, cylinder version, and technical figures in the datasheet for the selected unit.
- [IGLU Inuit air-to-water heat pump with integrated water heater](https://jardis.lt/en/iglu-inuit-air-to-water-heat-pump-with-integrated-water-heater.md): IGLU Inuit is an air-to-water heat-pump version with an integrated domestic-hot-water cylinder. Manufacturer technical data cover the 6–16 kW range, while the specific output and cylinder version must be selected for the project.
- [Gree Versati III SPLIT indoor unit (NHH2 generation)](https://jardis.lt/en/gree-versati-iii-split-indoor-unit-nhh2-generation.md): Gree Versati III NHH2 is the indoor hydraulic unit of an air-to-water split system. It connects to a specific outdoor unit from the same range, so confirm output and electrical parameters from both unit codes.
- [IGLU Aleut geothermal heat pump with water heater](https://jardis.lt/en/iglu-aleut-geothermal-heat-pump-with-water-heater.md): IGLU Aleut WTI is an inverter ground-to-water heat-pump version with an integrated domestic-hot-water cylinder. The range has 4, 7, 12, and 18 kW variants, so select the exact model for the geothermal circuit and building requirements.
- [Atlantic Alfea Excellia Duo A.I. TRI 11 air-to-water heat pump](https://jardis.lt/en/atlantic-alfea-excellia-ai-tri-14-heat-pump.md): Atlantic Alfea Excellia Duo A.I. TRI 14 is a three-phase air-to-water split heat pump for higher heating demands. At an outdoor temperature of +7 °C and a supplied water temperature of +35 °C, its nominal heating capacity reaches 13.1 kW; separate solutions are required for hot water and cooling functions.
- [Gree Versati IV SPLIT, 14.60/13.80 kW, S1GRE- Air-to-water heat pump indoor unit](https://jardis.lt/en/gree-versati-iv-split-14601380-kw-s1gre-air-to-water-heat-pump-indoor-unit.md): Three-phase Gree Versati IV Split indoor unit for a 14.60 kW heating / 13.80 kW cooling air-to-water heat-pump system.
- [Atlantic ALFEA M Smart protect heat pump](https://jardis.lt/en/atlantic-alfea-m-smart-protect-heat-pump.md): Atlantic Alfea M Smart Protect is an air-to-water monobloc-system configuration with a separate indoor hydraulic module. As this record has no specific output code, confirm exact performance and package contents in the documentation for the selected model.
- [Atlantic Synea Duo heat pump](https://jardis.lt/en/atlantic-synea-duo-heat-pump.md): Atlantic Synea Duo is an entry in the compact air-to-water heat pump series with a domestic hot water preparation function. The exact capacity and technical specifications of the specific variant are not specified in this entry, so it is necessary to verify the model code before ordering.
- [Gree Versati III outdoor unit (NHH generation)](https://jardis.lt/en/gree-versati-iii-outdoor-unit-nhh-generation.md): Gree Versati III NHH is an outdoor unit for an air-to-water split system. The NHH designation is associated with the R32 Versati III generation, but the exact output and compatible indoor unit must be confirmed from the model code.
- [Gree Versati IV DUO heat pump](https://jardis.lt/en/gree-versati-iv-duo-heat-pump.md): Gree Versati IV Duo is a range of air-to-water heat-pump systems with a domestic-hot-water solution. As this record has no specific model code or output, confirm the technical data for the selected package before ordering.
- [Gree Versati III outdoor unit (NHH2 generation)](https://jardis.lt/en/gree-versati-iii-outdoor-unit-nhh2-generation.md): Gree Versati III NHH2 is an outdoor unit for an air-to-water split system. It must be paired only with a compatible NHH2-series indoor unit; exact output, supply, and connections are defined by both unit codes.
- [Gree Versati III DUO heat pump](https://jardis.lt/en/gree-versati-iii-duo-heat-pump.md): Gree Versati III Duo is an air-to-water heat-pump system with a domestic-hot-water solution. As this entry does not identify the exact model or output, verify its technical parameters and compatible components before ordering.
- [Gree Versati II 14,0/12,6kW, S1GRE - Air-to-water heat pump outdoor unit](https://jardis.lt/en/gree-versati-ii-140126kw-s1gre-air-to-water-heat-pump-outdoor-unit.md): Three-phase Gree Versati II outdoor unit for a 14,0 kW heating / 12,6 kW cooling capacity air-to-water heat pump system with R410A refrigerant.

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