| Mitsubishi Electric | 1606 | 8 | 89 | 7.13 | 3.2–1698 |
| Trane Deutschland GmbH | 416 | 0 | 19 | 6.55 | 6.1–966 |
| Viessmann | 368 | 205 | 243 | 7.23 | 4.1–222 |
| Clivet | 344 | 78 | 143 | 5.35 | 5.0–492 |
| Aermec | 338 | 39 | 9 | 5.85 | 2.7–1018 |
| Daikin | 313 | 32 | 47 | 5.20 | 2.5–498 |
| Buderus | 273 | 152 | 80 | 5.49 | 4.0–130 |
| Panasonic | 264 | 9 | 37 | 5.20 | 2.0–300 |
| Ecoforest | 250 | 173 | 137 | 5.31 | 4.1–85 |
| Carrier | 230 | 18 | 34 | 7.24 | 2.5–1614 |
| Samsung | 207 | 0 | 47 | 5.10 | 2.2–68 |
| ait-deutschland | 201 | 105 | 48 | 5.56 | 5.0–58 |
| Swegon | 185 | 0 | 42 | 6.53 | 4.7–831 |
| Hitachi | 178 | 11 | 24 | 5.62 | 2.5–67 |
| Mitsubishi Heavy Industries | 155 | 0 | 0 | 5.31 | 2.7–63 |
| FläktGroup Deutschland GmbH | 152 | 0 | 0 | 4.39 | 40.0–641 |
| Stulz GmbH | 145 | 0 | 1 | 5.32 | 2.5–189 |
| Waterkotte | 120 | 51 | 12 | 8.10 | 4.0–113 |
| LG | 119 | 16 | 26 | 5.46 | 3.2–73 |
| NIBE | 117 | 46 | 11 | 8.75 | 3.5–58 |
| GD TCL Intelligent Heating & Ventilating Equipment Co., Ltd. | 114 | 0 | 52 | 5.33 | 5.0–15 |
| Hisense Gorenje | 103 | 0 | 5 | 5.50 | 2.3–100 |
| Thermia AG | 103 | 42 | 12 | 6.38 | 5.5–85 |
| Fujitsu | 101 | 0 | 0 | 5.37 | 2.5–50 |
| Stiebel Eltron | 101 | 64 | 25 | 5.65 | 4.2–85 |
| Bosch | 98 | 72 | 48 | 7.70 | 2.3–40 |
| Elco | 88 | 19 | 4 | 6.75 | 5.2–80 |
| GENERAL HVAC Solutions Euro GmbH | 84 | 0 | 0 | 5.37 | 2.5–50 |
| Midea Europe GmbH | 82 | 0 | 26 | 5.35 | 2.9–45 |
| Tecalor | 81 | 62 | 25 | 5.65 | 4.2–86 |
| MTF Marken-Distributions GmbH | 80 | 0 | 0 | 5.10 | 2.5–33 |
| iDM Energiesysteme GmbH | 79 | 45 | 15 | 8.04 | 5.4–181 |
| Bosch Thermotechnik | 74 | 0 | 0 | 4.90 | 5.0–90 |
| Remko | 74 | 1 | 10 | 5.65 | 2.2–158 |
| Dimplex - Glen Dimplex Deutschland GmbH | 71 | 2 | 11 | 5.35 | 6.0–99 |
| Toshiba | 71 | 0 | 0 | 5.54 | 2.5–62 |
| August Brötje GmbH | 70 | 22 | 30 | 5.34 | 5.0–30 |
| KNV Energietechnik GmbH | 68 | 0 | 0 | 8.75 | 5.9–58 |
| Vaillant | 66 | 36 | 15 | 5.86 | 2.7–29 |
| Orange Energy GmbH & Co. KG | 65 | 19 | 0 | — | 7.0–120 |
| Max Weishaupt SE | 65 | 15 | 12 | 5.20 | 5.0–180 |
| Heliotherm Wärmepumpentechnik Ges.m.b.H | 64 | 43 | 13 | 6.23 | 5.0–120 |
| Johnson Controls Systems & Service GmbH | 64 | 0 | 0 | 5.22 | 5.5–482 |
| Ochsner Wärmepumpen GmbH | 63 | 21 | 18 | 7.78 | 5.5–99 |
| CTA AG | 62 | 25 | 19 | 7.28 | 6.0–132 |
| Beijer Ref Deutschland GmbH | 60 | 0 | 0 | 5.30 | 2.5–67 |
| Malag&Soltau GmbH / M&S POWER | 59 | 1 | 13 | 5.42 | 4.0–18 |
| Cooldown | 58 | 0 | 8 | 5.28 | 4.2–68 |
| Ningbo AUX Electric Co., Ltd. | 55 | 0 | 26 | 5.20 | 5.5–16 |
| Germany GREE GmbH | 53 | 0 | 12 | 5.17 | 5.0–16 |
| Kampmann GmbH & Co. KG | 52 | 7 | 18 | 5.35 | 5.0–420 |
| M-TEC GmbH | 50 | 33 | 27 | 8.25 | 6.1–69 |
| Olimpia Splendid S.p.A. | 49 | 0 | 0 | 5.22 | 5.5–15 |
| Hoval | 47 | 6 | 10 | 6.60 | 5.6–181 |
| Aereco GmbH | 45 | 3 | 0 | 4.98 | 6.0–88 |
| Guangdong Answer Technology Co., Ltd | 44 | 0 | 44 | 5.11 | 4.6–19 |
| TEMPLARI SPA | 44 | 10 | 29 | 5.75 | 6.5–47 |
| INVENTOR A.G. SINGLE MEMBER ELECTRIC APPLIANCES S.A. | 43 | 0 | 4 | 5.21 | 5.5–39 |
| Salvador Escoda SAU | 42 | 0 | 6 | 5.19 | 5.5–35 |
| Guangzhou Sprsun New Energy Technology Development Co., Ltd. | 41 | 0 | 16 | 4.81 | 3.1–34 |
| Advantix spa | 41 | 0 | 18 | 5.00 | 4.0–43 |
| Rhoss Deutschland GmbH | 40 | 2 | 29 | 6.69 | 58.0–319 |
| Ratiotherm GmbH & Co. KG | 39 | 11 | 6 | 7.12 | 7.5–41 |
| Remeha GmbH | 39 | 3 | 13 | 5.34 | 4.8–99 |
| SolarEast Heat Pump Ltd | 38 | 2 | 22 | 5.42 | 4.0–35 |
| OUTES GmbH | 37 | 19 | 7 | 5.01 | 4.1–16 |
| Guangdong PHNIX Eco-Energy Solutions Ltd. | 37 | 0 | 32 | 5.31 | 4.9–70 |
| Systemair GmbH | 36 | 0 | 2 | 5.21 | 6.6–90 |
| ES Energy Save AB | 36 | 0 | 21 | 4.93 | 4.1–65 |
| WOLF GmbH | 35 | 0 | 29 | 5.46 | 5.6–24 |
| Rotenso sp. z o. o. | 35 | 0 | 0 | 5.21 | 5.5–22 |
| POWER WORLD MACHINERY EQUIPMENT CO., LTD | 35 | 4 | 26 | 5.30 | 4.2–56 |
| Qingdao Economic and Technological Development Zone Haier Water Heater Co., Ltd. | 34 | 4 | 34 | 5.41 | 6.2–16 |
| IGLOO Sp. z o.o. | 32 | 0 | 32 | 5.32 | 7.5–8 |
| SolaX Power Network Technology (Zhejiang) Co., Ltd. | 31 | 12 | 31 | 5.44 | 8.5–16 |
| Pollmann Technik GmH & CoKG | 31 | 14 | 7 | 7.32 | 2.3–32 |
| Centrometal GmbH | 31 | 0 | 0 | — | 5.5–22 |
| S-Klima | 30 | 0 | 11 | 5.20 | 4.2–88 |
| Roth Werke | 29 | 23 | 11 | 5.56 | 5.0–21 |
| KRONOTERM d.o.o. | 28 | 8 | 8 | 8.48 | 6.4–106 |
| FOSHAN SHUNDE ZEALUX ELECTRICAL APPLIANCES CO., LTD. | 28 | 0 | 8 | 4.86 | 4.5–19 |
| Weider Wärmepumpen GmbH | 26 | 13 | 4 | 6.70 | 6.4–63 |
| Michl Technik GmbH | 26 | 1 | 7 | 5.05 | 4.0–16 |
| Simaka Energie- und Umwelttechnik GmbH | 25 | 0 | 0 | — | 6.0–117 |
| GD Shenling Thermal Tech Co., Ltd | 25 | 0 | 9 | 5.30 | 5.0–15 |
| Klima-Therm GmbH | 24 | 0 | 2 | 5.22 | 6.8–21 |
| Kermi | 24 | 16 | 11 | 7.12 | 6.0–23 |
| Guangdong New Energy Technology Co., Ltd | 24 | 1 | 14 | 5.14 | 4.2–67 |
| Herz Energietechnik GmbH | 23 | 0 | 3 | 5.30 | 6.0–26 |
| MTA Deutschland GmbH | 23 | 0 | 17 | 4.40 | 15.7–52 |
| KRONE Kälte + Klima Vertriebs-GmbH | 23 | 0 | 4 | 5.27 | 3.0–56 |
| SmartHeat Deutschland GmbH | 23 | 0 | 2 | 4.56 | 5.0–99 |
| Groupe Airwell | 22 | 0 | 0 | — | 5.5–22 |
| WP HEATER Volkmar Philipp | 22 | 0 | 8 | 4.93 | 6.2–48 |
| LFB Deutschland GmbH | 21 | 0 | 0 | 4.05 | 35.5–405 |
| Hargassner Ges mbH | 21 | 9 | 5 | 5.34 | 5.0–18 |
| Kaukora Oy | 20 | 3 | 2 | 5.20 | 5.0–28 |
| Galletti S.p.A. | 20 | 0 | 12 | 5.19 | 6.4–51 |
| Voß Wärmepumpen GmbH | 20 | 15 | 2 | 7.23 | 7.6–24 |
| AUTARK POWER GmbH | 19 | 0 | 6 | 5.29 | 4.1–57 |
| TommaTech GmbH | 19 | 0 | 5 | 4.87 | 5.0–17 |
| Austria Email GmbH | 19 | 0 | 3 | 4.67 | 4.3–17 |
| Photomate s.r.o. | 18 | 3 | 18 | 5.18 | 4.8–12 |
| Heim AG Heizsysteme | 17 | 7 | 7 | 5.40 | 5.3–62 |
| SOLVIS GmbH | 16 | 6 | 8 | 5.35 | 5.9–19 |
| Xtherma GmbH | 16 | 4 | 16 | 5.63 | 4.9–29 |
| Ygnis AG | 16 | 3 | 6 | 5.82 | 4.7–106 |
| WUXI TONGFANG ARTIFICIAL ENVIRONMENT CO.,LTD | 15 | 0 | 4 | 4.85 | 3.9–15 |
| Airwende Umwelttechnik GmbH | 15 | 0 | 5 | 5.02 | 4.1–16 |
| Qmex Technology B.V., | 15 | 0 | 12 | 4.93 | 6.1–35 |
| GEP German Energy Power GmbH | 15 | 0 | 11 | 5.30 | 4.4–16 |
| VARMEKS ISITMA VE SOĞUTMA SANAYİ VE TİCARET A.Ş. | 15 | 0 | 8 | 4.69 | 5.8–56 |
| Ritter Energie | 15 | 11 | 9 | 5.96 | 4.2–20 |
| ALARKO CARRIER SANAYI VE TICARET A.S. | 15 | 0 | 15 | 5.35 | 5.0–16 |
| Foshan Guangteng New Energy Co., Ltd | 15 | 0 | 5 | 4.62 | 5.7–16 |
| ACCAMPS GmbH | 14 | 3 | 12 | — | 5.8–26 |
| Bulg Frank Topnik GmbH | 14 | 0 | 7 | 4.95 | 4.0–33 |
| Tongfang Germany GmbH | 14 | 0 | 4 | 4.85 | 3.9–15 |
| Olymp Werk GmbH | 14 | 6 | 4 | 5.90 | 5.9–33 |
| „Galmet Sp. z o.o.” Sp. K. | 14 | 0 | 4 | 4.81 | 4.3–15 |
| heatrex GmbH | 13 | 0 | 13 | 5.42 | 6.0–48 |
| NMT Heizsysteme GmbH | 13 | 4 | 8 | 4.74 | 5.8–22 |
| HOTJET CZ s.r.o. | 13 | 8 | 4 | 7.32 | 5.9–19 |
| Environ Energie- und Umwelttechnik Gmbh & Co. KG | 13 | 0 | 6 | 5.35 | 5.0–16 |
| Schönknecht & Busch GmbH | 13 | 0 | 11 | 4.73 | 4.6–16 |
| DVI Energi A/S | 13 | 0 | 6 | 5.10 | 4.1–31 |
| Höcker Wärmepumpen GmbH | 13 | 0 | 0 | 4.40 | 8.0–19 |
| Ovum Heiztechnik GmbH | 12 | 8 | 4 | 6.02 | 6.1–16 |
| FOXESS CO., LTD. | 12 | 0 | 12 | 5.23 | 8.0–12 |
| LumenHaus GmbH | 12 | 0 | 12 | 5.15 | 5.5–16 |
| Riello S.p.A Zweigniederlassung Deutschland | 12 | 0 | 0 | 5.21 | 5.5–22 |
| SOLARFOCUS GmbH | 12 | 9 | 8 | 5.58 | 5.5–20 |
| Arwego GmbH | 12 | 0 | 0 | — | 9.0–26 |
| Nilan GmbH | 11 | 4 | 1 | 5.33 | 3.4–9 |
| Ochsner Energietechnik | 11 | 0 | 0 | — | 125.0–670 |
| 2G Heek GmbH | 11 | 0 | 11 | 3.87 | 88.8–888 |
| WRW Pipes GmbH | 11 | 0 | 6 | — | 5.0–13 |
| ACOND a.s. | 10 | 6 | 10 | 5.58 | 4.2–21 |
| AWE AG | 10 | 2 | 2 | 6.93 | 7.5–27 |
| Techno Therm AG | 10 | 2 | 4 | 4.87 | 5.9–16 |
| BES BuildingEnergySolutions GmbH | 10 | 4 | 3 | 6.39 | 10.3–75 |
| Kensol Sp. z o.o. | 10 | 0 | 3 | 5.01 | 5.4–18 |
| Effidur GmbH | 10 | 0 | 0 | — | 8.1–22 |
| Harreither Ges.m.b.H. | 10 | 0 | 10 | 5.20 | 5.0–15 |
| DEFRO R. Dziubela sp. k. | 10 | 4 | 10 | 5.16 | 6.0–16 |
| Junkers | 9 | 9 | 0 | 5.38 | 11.0–78 |
| Eco Green Energie BGC | 9 | 0 | 9 | 5.30 | 6.1–56 |
| OEG GmbH | 9 | 0 | 9 | 4.72 | 6.3–40 |
| Fuchs Group GmbH | 9 | 0 | 4 | 5.07 | 4.2–23 |
| Enpal Production GmbH | 9 | 0 | 9 | 5.35 | 7.9–16 |
| MHG Heiztechnik GmbH | 8 | 0 | 5 | 5.26 | 5.0–16 |
| SUNEX S.A. | 8 | 0 | 4 | 5.02 | 7.5–40 |
| Ventron GmbH | 8 | 0 | 5 | — | 5.8–14 |
| Ecochi GmbH | 8 | 3 | 8 | 5.48 | 6.9–16 |
| Zewotherm | 8 | 7 | 8 | 6.06 | 4.2–32 |
| Aereco | 8 | 0 | 0 | 6.70 | 12.6–14 |
| EQ-Therm GmbH | 8 | 0 | 4 | 5.50 | 5.9–52 |
| Foshan Goodheat Technology Ltd | 8 | 0 | 8 | 5.35 | 6.1–18 |
| DEHER sp. z . o. o. | 8 | 0 | 4 | — | 5.8–18 |
| Klimadan A/S | 8 | 0 | 4 | 5.39 | 5.0–34 |
| RP Handels und Service GmbH | 8 | 0 | 8 | 4.72 | 4.8–16 |
| 1 SINQ GmbH | 8 | 3 | 8 | 5.58 | 4.2–21 |
| Tulip Wise B.V. | 7 | 0 | 7 | 4.83 | 6.1–35 |
| Windhager(HIDU GmbH) | 7 | 3 | 7 | 5.70 | 5.8–14 |
| Qvantum Energietechnik GmbH | 7 | 4 | 6 | 4.95 | 3.5–13 |
| NORD HT Sp. z o.o. | 7 | 0 | 4 | 5.07 | 6.7–18 |
| ThermoCare GmbH, Gerrit Tijdeman | 7 | 0 | 7 | 4.72 | 5.8–15 |
| GZ AXEN Heat Pump Technology CO.,LTD | 7 | 0 | 7 | 5.21 | 4.2–15 |
| Pewo Energietechnik GmbH | 7 | 2 | 0 | 5.71 | 7.6–22 |
| Dream Maker Technologie GmbH | 7 | 0 | 5 | 5.22 | 6.5–29 |
| Löwe Spitzentechnologie GmbH | 7 | 2 | 3 | 5.48 | 6.2–19 |
| Gülzow Wärmetechnik Vertriebs GmbH | 6 | 3 | 0 | 4.10 | 9.6–25 |
| Görrissen Manufacturing GmbH | 6 | 2 | 6 | 4.99 | 6.2–91 |
| Tongyi Heat Pump Science and Technology Co., Ltd. | 6 | 0 | 4 | 5.07 | 6.7–18 |
| Oilon GmbH | 6 | 3 | 0 | 5.26 | 24.2–82 |
| ATAG Heizungstechnik GmbH | 6 | 0 | 0 | 5.16 | 5.2–12 |
| Eco Green Energy BGC UG (haftungsbeschränkt) | 6 | 0 | 6 | 5.00 | 8.0–18 |
| Regulus Wärmetechnik GmbH | 6 | 1 | 3 | 5.62 | 5.3–29 |
| COPPEN GmbH | 6 | 0 | 6 | 4.92 | 6.1–18 |
| Adlar Castra Deutschland GmbH | 6 | 0 | 3 | 5.05 | 5.0–12 |
| Guangdong JNOD New Energy Technology Co., LTD. | 6 | 0 | 6 | 4.89 | 5.0–15 |
| Hogan Heatpumps | 6 | 0 | 6 | 4.93 | 6.1–16 |
| KWB Energiesysteme GmbH | 6 | 3 | 6 | 5.70 | 7.7–21 |
| CTC Heizkessel Wärmetechnik Berthold GmbH | 6 | 2 | 3 | 5.35 | 5.3–12 |
| HT Heiztechnik Spółka z ograniczoną odpowiedzialną | 6 | 1 | 0 | — | 9.0–20 |
| Waermequelle GmbH | 5 | 0 | 5 | 4.73 | 5.8–16 |
| Sonnenwärme Direkt GmbH | 5 | 0 | 5 | — | 5.8–14 |
| ACALOR | 5 | 0 | 5 | 4.34 | 4.6–10 |
| BHT Deutschland GmbH | 5 | 3 | 0 | — | 8.0–17 |
| HKS Lazar Sp z o.o. | 5 | 0 | 5 | 4.82 | 6.2–16 |
| ATTACK, s.r.o. | 5 | 0 | 0 | 4.99 | 4.2–16 |
| Qingdao Smad Electric Appliances Co., Ltd. | 5 | 0 | 5 | 5.41 | 8.2–16 |
| Wolf-Technik GmbH | 5 | 4 | 0 | 4.73 | 6.3–17 |
| CLEANL | 5 | 1 | 5 | 5.42 | 6.0–16 |
| HEWALEX Sp. z o.o. Sp.k. | 5 | 0 | 0 | — | 5.4–14 |
| LAMBDA Wärmepumpen GmbH | 5 | 4 | 5 | 6.06 | 10.0–32 |
| Zhejiang Deye Electrical Appliances Co., Ltd. | 5 | 0 | 5 | 5.35 | 9.5–15 |
| CHOFU | 4 | 0 | 4 | 4.67 | 5.0–11 |
| Atec GmbH & Co KG | 4 | 2 | 0 | 4.76 | 4.1–99 |
| R5 Energy GmbH | 4 | 0 | 4 | 4.83 | 6.1–35 |
| Kołton | 4 | 4 | 4 | 4.74 | 9.0–22 |
| Roman Kriuchkovenko Cooper&Hunter DE | 4 | 0 | 4 | 5.11 | 9.3–20 |
| TOP Wärmepumpen GmbH | 4 | 0 | 0 | 5.04 | 5.0–13 |
| Brunner GmbH | 4 | 4 | 3 | 5.17 | 7.8–10 |
| Mederer GmbH | 4 | 1 | 0 | 4.26 | 9.6–25 |
| Triple Solar GmbH | 4 | 4 | 2 | 6.16 | 4.4–16 |
| MULTIBETON GmbH | 4 | 1 | 4 | 5.08 | 4.8–13 |
| IZZIFAST | 4 | 4 | 4 | 5.58 | 4.2–10 |
| WunderWärme GmbH | 4 | 1 | 4 | 5.08 | 4.8–13 |
| Falk energy solutions GmbH | 4 | 2 | 4 | 5.62 | 7.3–16 |
| Genertec Europe Temax GmbH | 4 | 0 | 4 | 5.05 | 7.2–15 |
| SHWT e.K. - Gueorgui Kaymakanov | 4 | 0 | 2 | 5.26 | 4.3–14 |
| Effiziente Energietechnik Oliver Panarotto | 3 | 0 | 0 | — | 8.4–12 |
| Aira Home Germany GmbH | 3 | 0 | 3 | 4.71 | 6.8–13 |
| FoxAir Sp. z. o. o. | 3 | 0 | 3 | 5.05 | 4.9–13 |
| HOME STAR SPÓŁKA Z OGRANICZONĄ ODPOWIDZIALNOŚCIĄ | 3 | 0 | 3 | 4.80 | 6.2–1015 |
| Carl CAPITO Heiztechnik GmbH | 3 | 0 | 3 | 4.83 | 8.2–8 |
| INTERDOMO GmbH | 3 | 0 | 3 | 4.89 | 6.3–12 |
| Kołton Spółka Komandytowa | 3 | 0 | 3 | 4.08 | 6.2–15 |
| Solarbayer GmbH | 3 | 0 | 0 | — | 8.1–15 |
| curam-Energia GmbH | 3 | 0 | 3 | 4.78 | 7.0–17 |
| Solardirekt24 GmbH | 3 | 1 | 0 | — | 5.3–11 |
| Mareli Systems | 3 | 0 | 2 | 5.26 | 4.3–8 |
| Ox int d.o.o. | 3 | 0 | 0 | 4.19 | 7.8–17 |
| Climalutions B.V. | 3 | 0 | 3 | 4.83 | 6.1–10 |