Senville Pro Partner · Authorized dealer/installer
Five rooms, one outdoor unit: Senville’s 36K and 48K, head to head.
Senville 5-zone heat pump: 36K or 48K?
Only two Senville outdoor units go up to five heads: the 36K (36,000 BTU) and the 48K (48,000 BTU), and only one has its own five-head kit. We set them against each other line by line, from 8.3 °C to −30 °C, down to the electrical circuit and the LogisVert amount, then add up the line sets when five rooms share one outdoor unit.
Updated October 26, 2026 · Hydro-Québec, NEEP, ENERGY STAR and SenvilleSchematic, not to scale. Heads: senville.ca SENA/48HF/F kit page, October 26, 2026. 48K: certified rated cooling capacity at 35 °C, NEEP, re-read unchanged October 26, 2026.
This page answersFor larger homes that want to heat and cool five rooms from one outdoor unit: the 36K and the 48K compared figure by figure, Senville’s only five-head kit, what each Senville document really allows, and the line sets with five heads.
The 36K and the 48K as 5-zone systems: our 2 listings, right below.
Two outdoor units, two AHRI certificates, two LogisVert amounts: the duel further down settles it.
Duel: 36K vs 48K at five heads
Two outdoor units from the same AURA MOA series, head to head. Each row gives both published values and a one-line verdict; the heat and LogisVert bars are scaled to the larger of the two.
| 36K | Criterion and verdict | 48K |
|---|---|---|
| Nonefive heads rest on the “2-5” spec table | Senville five-head kitOnly the 48K has a Senville five-head kit. | SENA/48HF/F5 × 9,000, SKU SENA-48HF/F |
| 2-5five heads = its published maximum | Heads, per the spec tableThe 36K runs at its limit; the 48K keeps one head in hand per its five-head spec table. | 2-6five-head kit spec table |
| 36,000BTU/h · COP 4.00 | Heat at 8.3 °C+13,000 BTU/h for the 48K; better COP for the 36K (4.00 vs 3.70). | 49,000BTU/h · COP 3.70 |
| 38,000BTU/h · COP 2.12 | Heat at −8.3 °C+7,000 BTU/h and a better COP for the 48K. | 45,000BTU/h · COP 2.60 |
| 36,000BTU/h · COP 2.00 | Heat at −15 °C+11,000 BTU/h for the 48K, at the same COP. | 47,000BTU/h · COP 2.00 |
| 22,400BTU/h · COP 1.47 | Maximum at −30 °CThe gap shrinks to 2,200 BTU/h; the 36K keeps the better COP. | 24,600BTU/h · COP 1.27 |
| 23 · 13 | SEER2 · EER2Same SEER2; EER2 one point higher for the 36K. | 23 · 12 |
| 10.7 · 8.5 | HSPF2, regions IV · VThe 48K leads in both climate regions. | 11 · 9 |
| $4,560 | LogisVert, indicative+$840 for the 48K. | $5,400 |
| 37 A · 40 Amin. ampacity · max. fuse | Circuit, 208/230 V single-phaseTie: the 48K needs no larger circuit than the 36K. | 37 A · 40 Amin. ampacity · max. fuse |
| 5.2–16.6 Apublished range | Heating currentThe 48K draws up to 23 A, 6.4 A more at the top of the range. | 7–23 Apublished range |
| 38.39 intall · 211.86 lb | Outdoor cabinetThe 36K is 14.09 in (358 mm) lower and 34.61 lb lighter; same depth, 16.34 in. | 52.48 intall · 246.47 lb |
highlighted: the unit that wins the row; bars scaled to the larger of the two values
Overall verdictAt five heads, the 48K leads on heat from 8.3 °C to −30 °C, on HSPF2 and on LogisVert, with no larger circuit. The 36K keeps the better COP at 8.3 °C and −30 °C, the better EER2 and a lower cabinet. And only the 48K has its own Senville five-head kit.
Heat: rated capacity published by ENERGY STAR at 8.3, −8.3 and −15 °C, maximum capacity reported by Senville to NEEP at −30 °C; COPs from NEEP. SEER2, EER2 and HSPF2: NEEP and ENERGY STAR. LogisVert amount: Hydro-Québec’s file, by AHRI certificate. Read October 14, 2026, read again unchanged October 26, 2026. Kit, head count, circuit, current: senville.ca SENA/36HF/D, SENA/36HF/Q, SENA/48HF/Q and SENA/48HF/F kit pages, October 26, 2026. Cabinet: senville.ca spec tables, October 14, 2026. Differences: AirGreen calculation.
Five heads: what each Senville document allows
Senville’s pages and manuals do not give the same head count for the 36K and the 48K. Here is each reading on one scale, from one to six heads, with the five-head column highlighted and the value this page uses.
- 2-5
5 heads: yes SENA/36HF/D and SENA/36HF/Q wall-kit spec tables, and “2 to 5 Zones” on the 9,000 BTU head page (Oct. 26, 2026); outdoor-unit overview (Oct. 14, 2026).
- 2-4
5 heads: no Spec tables of the SENA/36HF/DIC and SENA/36HF/TIC ceiling-cassette kits (Oct. 26, 2026).
- 1-4
5 heads: no Service manual SM_ODUMULTI_R454B_3D INV_US1_NA_2403, hosted on senville.com: “one to four units”, badly extracted table, not confirmed.
Value used: 2-5, the wall-kit value. Five heads on the 36K need Senville’s confirmation before any quote: two readings (the ceiling-cassette kits and the service manual) stop at four and Senville sells no five-head kit for this unit.
- 2-6
5 heads: yes SENA/48HF/F five-head kit spec table (Oct. 26, 2026); outdoor-unit title, “(2-6 Zones)” (Oct. 14, 2026).
- 2-5
5 heads: yes SENA/48HF/Q four-head kit spec table (Oct. 26, 2026, “2-6” on October 14); “2 to 5 Zones” on the 9,000 BTU head page (Oct. 26, 2026).
- 2-5
5 heads: yes Senville’s multi-zone page, for the whole series: “2 to 5 indoor units” (Oct. 14, 2026); “de 2 à 5 unités intérieures” on fr.senville.ca (Oct. 26, 2026).
- 1-6
5 heads: yes Installation manual QS006UI-YTD(R454B): “Connected units: 1–6”.
Value used: 2-6, the five-head kit value. Five heads fit all four readings; a sixth fits only two.
Values are quoted as printed. The senville.ca Five Zone page could not be read on October 26, 2026; the fr.senville.ca multi-zone catalogue, read the same day, lists only one five-head kit (SENA/48HF/F) and no six-head kit.
A fifth head, not one more metre
In the multi-zone installation manual, the total length allowed stops growing after four heads: 80 m (262 ft), at five as at six. The fifth line has to fit inside the same total, and the 36K and the 48K follow the same ceilings.
35 m at most (115 ft)
If one line runs the full 35 m, the other four share 45 m, 11.25 m each on average. The ceilings are the four-head ones: the fifth head does not add a single metre.
150 ft, to check zone by zone
“The outdoor unit contains an R454B refrigerant pre-charge for a combined installation length of up to 150 ft.” “Have the installer confirm the required length for every zone.”senville.ca, SENA/48HF/F kit page, October 26, 2026
With five heads, the installation manual allows up to 262 ft in total: past 150 ft, the technician adds refrigerant as it specifies.
67.5 m in total, 22.5 m per head
That is 221 ft and 73 ft. These values come from a single, badly extracted table in the installation manual: not confirmed.
Height differences and the standard length per head, identical from two to six heads: multi-zone page.
Ceilings without quick connectors: both manuals agree (QS006UI-YTD(R454B), p. 14; SM_ODUMULTI_R454B_3D INV_US1_NA_2403, pp. 3-4). Quick-connector values: installation manual alone. Averages: AirGreen calculation.
Five heads on one unit: what to know before the quote
Which Senville outdoor units take five heads?
The 36K (SENA-36HF-MOA) and the 48K (SENA-48HF-MOA). Per Senville’s spec tables, the 18K stops at three heads and the 28K at four. Senville itself presents its multi-zone range as running “2 to 5 indoor units” per outdoor unit.
senville.ca kit spec tables, October 14 and 26, 2026; senville.ca multi-zone page, October 14, 2026.Does Senville sell a five-head kit for the 36K?
No. As of October 26, 2026, the fr.senville.ca multi-zone catalogue lists a single five-head kit, the 48K’s SENA/48HF/F. On the 36K, five heads rest only on the “2-5” spec table; two cassette-kit pages stop at four, as does a service manual whose reading is still to be confirmed. It is a setup that needs Senville’s confirmation before any quote.
fr.senville.ca Multizone catalogue and senville.ca SENA/36HF/D, SENA/36HF/Q, SENA/36HF/DIC and SENA/36HF/TIC pages, October 26, 2026; manual SM_ODUMULTI_R454B_3D INV_US1_NA_2403.Can the 48K take a sixth head?
Two readings out of four allow it: “2-6” on the five-head kit spec table and “1–6” in the installation manual. The four-head kit spec table (“2-5” on October 26, 2026, “2-6” on October 14) and the multi-zone page (“2 to 5 indoor units”) stop at five, and Senville sells no six-head kit. This page therefore stays at five.
senville.ca SENA/48HF/F and SENA/48HF/Q pages, October 26, 2026; Multi-Zone page, October 14, 2026; manual QS006UI-YTD(R454B), p. 14.Does the 48K need a larger circuit than the 36K?
No: a 37 A minimum circuit ampacity and a 40 A maximum fuse for both, on 208/230 V single-phase. In heating, though, the 48K draws up to 23 A, against 16.6 A for the 36K.
senville.ca SENA/36HF/D, SENA/36HF/Q and SENA/48HF/F pages, October 26, 2026.Which manual applies to the five-head kit?
The multi-zone manual QS006UI-YTD(R454B), which sets the lengths with five heads. The SENA/48HF/F kit page links manual CS019UI-EP(R454B) instead, the single-zone wall-unit manual, which does not cover multi-zone; the multi-zone manual is the one linked from the SENA/36HF/D and SENA/36HF/Q kit pages.
senville.ca SENA/48HF/F, SENA/36HF/D and SENA/36HF/Q pages, October 26, 2026.
Five rooms, one outdoor unit: chosen with you, installed by AirGreen.
We walk through the five rooms, check whether the 36K is enough or the 48K is needed, and draw the five lines within the 80 m allowed. You get a quote with the proposed system’s AHRI number and its indicative LogisVert amount.
Applies to the whole Senville range
Sources
- senville.ca (Senville Canada), October 26, 2026: SENA/36HF/D, SENA/36HF/Q, SENA/36HF/DIC, SENA/36HF/TIC, SENA/48HF/Q and SENA/48HF/F kit pages and the 9,000 BTU head page; the Five Zone page could not be read that day. October 14, 2026: 36,000 and 48,000 BTU outdoor-unit pages and the Multi-Zone page.
- fr.senville.ca, Multizone catalogue (kit titles and page text), read October 26, 2026.
- Manuals published on senville.com and read October 14, 2026: multi-zone installation QS006UI-YTD(R454B) (“MULTI-ZONE OUTDOOR UNIT AIR CONDITIONER”, undated) and service SM_ODUMULTI_R454B_3D INV_US1_NA_2403 (“MULTI OUTDOOR UNIT INVERTER SERIES”).
- Certified data read October 14, 2026 and re-checked unchanged October 26, 2026: ENERGY STAR (dataset w7cv-9xjt, records 3630064 and 3630067), NEEP (AHRI certificates 215735317 and 215735320) and Hydro-Québec’s LogisVert list.
LogisVert amounts are indicative: Hydro-Québec confirms them when you apply. Prices on quotation.