YORK 5-zone heat pumps: three outdoor units for five rooms, and their 35 combinations
For five rooms, three outdoor units: the 36,000 W, the 42,000 W and the 42,000 BTU/h M. YORK publishes 3 five-head combinations for the 36,000 W and 16 for each 42,000 unit.
5 zonesAt 5 heads, the number of combinations YORK publishes, unit by unit.
YORK 2020 catalogue, “Possible outdoor / indoor combinations” charts.
Every 5-head combination, unit by unit.
Pick the outdoor unit size: here are the head sizes YORK allows on it, for the W Series and the M Series.
Head sizes in thousands of BTU/h (9 = 9,000 BTU/h); after the = sign, the sum of nominal sizes in BTU/h. Output stays that of the outdoor unit: YORK asks that the outdoor unit be sized for the whole house’s load, and each head for its own room. We don’t install a combination that is not on YORK’s list.
Five heads: the 36,000 and 42,000 W, the 42,000 M.
| Item | W Series · 36,000 BTU/h | W Series · 42,000 BTU/h | M Series · 42,000 BTU/h |
|---|---|---|---|
| Outdoor model | DHW36CMB21SAHRI 8578501 | DHW42CMB21SAHRI 8578505 | DHM42CMB21SAHRI 8578497 |
| Max. heads | 5 | 5 | 5 |
| SEER · EER · HSPF | 21 · 12.4 · 10.2 | 21 · 10.4 · 10.2 | 16 · 9.3 · 8.2 |
| Rated cooling · rated heating at 8.3 °C | 34,000 · 35,800 BTU/h | 40,000 · 44,500 BTU/h | 40,000 · 44,500 BTU/h |
| Heating capacity, min. to max. | 10,663 to 40,944 BTU/h | 10,663 to 47,768 BTU/h | 10,663 to 47,768 BTU/h |
| Heats down to | −20 °C | −20 °C | −15 °C |
| Cooling down to (outdoor) | −18 °C | −18 °C | −5 °C |
| Min. circuit ampacity (MCA) · max. overcurrent protection (MOCP) | 21 A · 30 A | 24 A · 30 A | 29 A · 50 A |
| Outdoor unit (W × H × D) | 43 × 43 × 17 in.198 lb · 61 dB(A) | 43 × 43 × 17 in.198 lb · 61 dB(A) | 40 × 43 × 17 in.225 lb · 58 dB(A) |
| Total line length | 245 ft | 265 ft | 265 ft |
| To the farthest head | 82 ft | 82 ft | 82 ft |
| Height difference (up or down) | 49 ft | 49 ft | 49 ft |
| Factory charge | 128.74 oz | 128.74 oz | 169.31 oz |
The five-head system, designed by YORK, installed by AirGreen.
AirGreen picks the outdoor unit and each head’s size with you within YORK’s combinations, then installs the 5 heads.
What YORK brings
- 3 outdoor unitsW and M, from 36,000 to 42,000 BTU/h.
- 35 published combinationsAt 5 heads, W and M together.
- Four head typesWall, cassette,
floor-ceiling and ducted; our listings come with wall heads.
What AirGreen brings
- Sold and installed by AirGreenIn Montreal, Laval, Longueuil, the South Shore and the North Shore.
- Free visitWe measure the rooms, the insulation, the electrical service and the refrigerant line route.
- Clear quoteThe exact model, what is included and the price, in writing.
- RBQ 5645-9605-01Subcategories 15.8, 15.10 and 16.
The result: one head per room, 5 in all, in a combination YORK allows.
All five-head listings, right below.
One listing per outdoor unit, with wall heads and its AHRI number; other heads are quoted on request.
What is specific to 5-head systems.
- The 42,000 BTU/h W and M take the same 16 five-head combinations; the W is rated 21 SEER, the M 16. The 36,000 W, for its part, does not take five 9,000 heads.
- The 36,000 BTU/h W has five ports; the 36,000 M has four.
LogisVert: none of our 5-head YORK systems qualifies.
None of the 3 AHRI numbers on our 3 listings is on
What people ask us about 5-head systems.
Which YORK outdoor units serve five rooms?
Three: the 36,000 BTU/h W, the 42,000 W and the 42,000 M. The 36,000 M stops at four heads.
Which five-head combinations does the 36,000 BTU/h W take?
YORK lists only three: 4 × 9,000 + 12,000, 4 × 9,000 + 18,000 and 3 × 9,000 + 2 × 12,000 BTU/h. For more choice, the 42,000 BTU/h unit offers sixteen.
How much line length for five heads?
Up to 265 ft in total and 82 ft to the farthest head on the 42,000 BTU/h units; 245 ft in total on the 36,000 W. We map the route at the visit.
Do YORK five-zone systems qualify for LogisVert?
No: no AHRI number on our 3 five-head listings is on
Your 5 rooms, one YORK outdoor unit, installed by AirGreen.
At the free visit, we check whether your five rooms fit the 3 combinations of the 36,000 BTU/h W or need a 42,000 unit (16 combinations).
Sources and dates checked
- YORK, Mini-Split Systems catalogue
PUBL-7782v6 (November 2020): M and Wmulti-zone , outdoor units (pp. 24 and 31), indoor units (pp. 23, 25 to 28 and 32 to 35), possible combinations (pp. 29, 30, 36 and 37); copy in our documents, re-read October 26, 2026. - YORK, M Series (
PUBL-8258v2 ) and W Series (PUBL-8259v2 ) brochures, July 2019: maximum zones per outdoor unit; copies in our documents, re-read October 26, 2026. Hydro-Québec , LogisVert eligible heat pump list, file of October 26, 2026, “homeowner, existing house” profile, searched by AHRI number.- ENERGY STAR, Certified Air-Source Heat Pumps, dataset w7cv-9xjt, searched by AHRI number on October 26, 2026.
- airgreen.ca product pages: outdoor units, head counts and AHRI numbers we carry, read October 26, 2026.
Price on quote. YORK® is a registered trademark, used here to identify the products we sell and install.