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One outdoor unit, one head per room. Pick the compressor family and size: you see how many heads it takes, how cold it can heat, the line length allowed and the LogisVert amount that applies.
One outdoor unit for several heads. For each compressor: the number of heads, how cold it can heat, the line length allowed, and the LogisVert amount that applies.
Family
Compressor · BTU/h
LomoPlus UltraHeat · 24,000 (TM24H5O): from 1 to 3 heads, heating down to -35 °C, LogisVert $2,148 (list of October 7, 2026).
Source: TOSOT sheet of November 4, 2024 and ENERGY STAR, read again on November 5, 2026.
LomoPlus UltraHeat: TOSOT sheets of November 4, 2024 and ENERGY STAR, read again on November 5, 2026. Lomo 23: TOSOT sheets read on October 28, 2026. LomoPlus UltraHeat has no 30,000 BTU/h compressor. LogisVert amounts: Hydro-Québec’s list of October 7, 2026.
Each product page: outdoor model, AHRI number and the heads offered.
The LomoPlus UltraHeat sheets of November 4, 2024 list single-head systems: 9,000 to 24,000 BTU/h on the 18,000 compressor, 12,000 to 24,000 on the 24,000, 18,000 or 24,000 on the 36,000 and 42,000. The Lomo 23 sheets read on October 28, 2026 also gave a minimum of one head.
TOSOT sheets TM18H5O to TM42H5O (November 4, 2024); sheets TM18H4O to TM42H3O (read on October 28, 2026).
TOSOT adds up the heads’ capacity and divides it by the outdoor unit’s: 50 to 150% allowed, 50 to 130% recommended. Above 130%, the sheet warns, the heads deliver less when most of them run at the same time.
TOSOT sheets TM18H5O to TM42H5O, note on the combination table (November 4, 2024).
The Lomo 23 compressor sheets, read on October 28, 2026, give heating down to -21 °C (-5 °F). Neither ENERGY STAR nor NEEP has a record for their AHRI numbers, and Hydro-Québec’s list of October 7, 2026 gives them no LogisVert amount.
TOSOT sheets TM18H4O to TM42H3O; ENERGY STAR and NEEP (October 28, 2026); Hydro-Québec’s list of October 7, 2026.
One row per compressor; each name opens its dual-zone product page.
| Compressor | Heads | Heating down to | Certified at -8 °C | LogisVert | At AirGreen |
|---|---|---|---|---|---|
| Lomo 23 · 18,000TM18H4O | 1 to 2 | -21 °C | — | — | 2 rooms |
| Lomo 23 · 24,000TM24H4O | 1 to 3 | -21 °C | — | — | 2 · 3 rooms |
| Lomo 23 · 30,000TM30H4O | 1 to 4 | -21 °C | — | — | 2 · 3 · 4 rooms |
| Lomo 23 · 36,000TM36H4O | 1 to 5 | -21 °C | — | — | 2 · 3 · 4 rooms |
| Lomo 23 · 42,000TM42H3O | 1 to 5 | -21 °C | — | — | 2 · 3 · 4 · 5 rooms |
| LomoPlus UltraHeat · 18,000TM18H5O | 1 to 2 | -35 °C | 17,000 BTU/h | $2,040 | 2 rooms |
| LomoPlus UltraHeat · 24,000TM24H5O | 1 to 3 | -35 °C | 17,900 BTU/h | $2,148 | 2 · 3 rooms |
| LomoPlus UltraHeat · 36,000TM36H5O | 1 to 4 | -35 °C | 29,000 BTU/h | $3,480 | 2 · 3 · 4 rooms |
| LomoPlus UltraHeat · 42,000TM42H5O | 1 to 5 | -35 °C | 30,000 BTU/h | $3,600 | 2 · 3 · 4 · 5 rooms |
Lomo 23: TOSOT sheets read on October 28, 2026. LomoPlus UltraHeat: TOSOT sheets of November 4, 2024 and ENERGY STAR, read again on November 5, 2026. —: no ENERGY STAR record, and no amount on Hydro-Québec’s list of October 7, 2026.
We look at the room, the insulation and the electrical panel, then we propose the model, the quote and the LogisVert amount that applies.
LogisVert amounts come from Hydro-Québec’s list on the date shown; only Hydro-Québec confirms the grant. AHRI numbers are those on our product pages, unchanged.