Compare installers: contact details, locations and Tukes register entries in one place.
We list 5 companies in Lohja. Of those, 5 are in the Tukes register (checked 11 September 2026). The brands that come up most often are Gree, Growatt and Panasonic.
Below is each company’s own page, with its contact details and the area it serves, and its offices on the map.
5 results
Etelä-Suomen Lämpöasennus Oy is an HVAC company based in Lohja, serving the entire Uusimaa region. The company specializes in the sale, installation, and maintenance of air source heat pumps and air-to-water heat pumps. Their selection includes well-known brands such as Mitsubishi Electric, Panasonic, Gree, and Daikin. Services also include solar panel installations.
In the Tukes register: operating right e3, valid until 12.3.2029. Checked 11.9.2026.
Aurinkosähkö Laakko Oy is an electrical installation company based in Lohja, serving the Uusimaa and Southwest Finland regions. The company specializes in turnkey solar power system sales and installations. Their offering includes high-quality GEF and SolarWatt solar panels as well as electric vehicle charging stations. Certified installers ensure a safe and professional result.
In the Tukes register: operating right A. Checked 11.9.2026.
Serves all of Finland
An HVAC company established in 2019 in Lohja, serving households, businesses, and housing companies in the Uusimaa region and, if necessary, throughout Finland. Services include HVAC installations, maintenance, pipe renovations, and domestic water and heating pipe renovations. Also offers construction services, such as bathroom and kitchen renovations.
In the Tukes register: operating right e3, valid until 12.3.2029. Checked 11.9.2026.
✅ Tukes-certified HVAC company from Lohja, specializing in the sale and installation of heat pumps. Services include air and air-to-water heat pumps, as well as comprehensive piping work for households, companies, and housing associations. The operating area is Lohja and the surrounding municipalities, such as Siuntio, Vihti, Inkoo, and Raasepori.
In the Tukes register: operating right e3, valid until 12.3.2029. Checked 11.9.2026.
Suomen Sähkö- ja Kiinteistötekniikka Oy performs electrical and refrigeration installations, maintenance, and repairs comprehensively in the Uusimaa region. We also offer electrical services, air conditioning and heating, renewable energy solutions, as well as telecommunications and automation services.
In the Tukes register: operating right A (sj). Checked 11.9.2026.
Enter your postal code and the service. Before you send anything you will see which companies your request goes to – at most three.
Household tax credit: 35% of the labour share of a company invoice, up to €1,600 per person per year, with a €150 own share (Verohallinto, 10 February 2026). The government has proposed raising this to 40% and €2,100 for 2026–2027, retroactively from 1 January 2026 (HE 113/2026 vp, Eduskunta, 11 June 2026). Parliament has not passed the bill, and the tax administration still writes about it in the conditional (Verohallinto, 16 June 2026).
Sources:Verohallinto, 10 February 2026; Eduskunta, 11 June 2026; Verohallinto, 16 June 2026
We list 5 companies in Lohja, and 5 of them are in the Tukes register (checked 11 September 2026). The map above shows which of them work nearest to you; open a company’s own page for its contact details and service area.