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AMERISTAR · Multi-zone · 19 Series · 4 zones
Four rooms on one unit: which quartet does the brand approve? Three 19 Series units accept four heads, from the 30,000 BTU/h up. Pick the four sizes: the tool keeps the kits on which the brand approves that quartet and gives each room's share of the connected nominal.
Pick the head size for each room: the tool keeps the kits on which the brand approves that combination.
The 9 + 9 + 9 + 12 combination (thousands of BTU/h) is approved by the brand on the 30,000, 36,000 and 42,000 BTU/h units.
| Kit | At -15°C, NEEP value of the unit | Indicative amount (AirGreen's calculation) |
|---|---|---|
| 30,000 BTU/h | 22,800 BTU/h | $3,264 |
| 36,000 BTU/h | 32,400 BTU/h * | $3,696 |
| 42,000 BTU/h | 32,400 BTU/h | $4,272 |
| Room | Head | Share of the connected nominal |
|---|---|---|
| Room 1 | 9,000 BTU/h | 23% |
| Room 2 | 9,000 BTU/h | 23% |
| Room 3 | 9,000 BTU/h | 23% |
| Room 4 | 12,000 BTU/h | 31% |
| Total connected | 39,000 BTU/h | 100% |
Share: AirGreen's calculation on the heads' nominal sizes, rounded to the unit. NEEP lists one value per outdoor unit; the brand publishes no capacity per combination: the heat delivered depends on the heads connected. * 36,000 BTU/h: listed higher at -15°C than at -8.3°C on NEEP (32,400 against 30,800).
Sources: AMERISTAR 19 Series Multi Zone sell sheet, 92-7323-03 (© 2024); NEEP cold-climate heat pump list, records 65383 to 65387 (modified Aug. 24, 2026); Hydro-Québec, LogisVert residential participation guide v1.10 (Appendix I) (Sept. 15, 2026)
With 9 + 9 + 9 + 12 (thousands of BTU/h):
| Unit | Quartet approved | At -15°C, NEEP value of the unit | Indicative amount |
|---|---|---|---|
| 30,000 BTU/h | yes | 22,800 BTU/h | $3,264 |
| 36,000 BTU/h | yes | 32,400 BTU/h * | $3,696 |
* 36,000 BTU/h: listed higher at -15°C than at -8.3°C on NEEP (32,400 against 30,800).
| Unit | Model | AHRI | ENERGY STAR | Max. heads | At -8.3°C (NEEP) | At -15°C (NEEP) | Max. overcurrent protection (breaker) · sell sheet |
|---|---|---|---|---|---|---|---|
| 30,000 BTU/h | M4THM1930A14NA | 210488261 | 2415511 | 4 | 27,200 BTU/h | 22,800 BTU/h | 35 A |
| 36,000 BTU/h | M4THM1936A14NA | 210488262 | 2415512 | 4 | 30,800 BTU/h | 32,400 BTU/h * | 45 A |
| 42,000 BTU/h | M4THM1942A15NA | 210488263 | 2415513 | 5 | 35,600 BTU/h | 32,400 BTU/h | 45 A |
Swipe the table to see every column.
The brand approves 3 quartets on the 30,000, 10 quartets on the 36,000 and 18 quartets on the 42,000.
Sell sheet 92-7323-03, combination table
On the 30,000 BTU/h unit, a quartet takes only 9,000 and 12,000 heads.
Sell sheet 92-7323-03, combination table
ENERGY STAR cold-climate units: $120 per 1,000 BTU/h of heating at -8°C (17°F; NEEP writes it -8.3°C), per the LogisVert guide v1.10.
| Unit | Heating at -8.3°C listed on NEEP | Indicative amount |
|---|---|---|
| 30,000 BTU/h | 27,200 BTU/h | $3,264 |
| 36,000 BTU/h | 30,800 BTU/h | $3,696 |
| 42,000 BTU/h | 35,600 BTU/h | $4,272 |
AirGreen's calculation: guide v1.10 rate × heating at -8.3°C listed on NEEP.
These amounts are indicative. Only Hydro-Québec confirms the grant, based on its list in force on the installation date.
Yes, on the 36,000 and the 42,000; the 30,000 BTU/h unit does not accept 12 + 12 + 12 + 12.
Yes, on the 36,000 and the 42,000, for example 9 + 9 + 9 + 18.
An indicative amount of $3,264 (30,000) to $4,272 (42,000), calculated by AirGreen at the guide's cold-climate rate. Only Hydro-Québec confirms the grant.
Sold and installed by AirGreen.
AMERISTAR limited warranty (sell sheet 92-7323-03 and warranty GW-600-2100A): 5 years on all parts, or 10 years (original purchaser) if the product is registered within 60 days of installation. Labour is not covered by the manufacturer. It applies to products installed in a residential or multi-family application. According to the brand, exclusions tied to registration and its transfer vary by province in Canada.
Sources read on Nov. 5, 2026. NEEP lists these values; it does not certify them.