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BOSCH // Multi-zone 6 heads

BOSCH 6-head heat pump

Six rooms on a single unit: under what conditions?

Only the R-454B 48,000, Regular or Max Performance, takes six heads: wall units up to 36,000, cassettes and ducted units up to 24,000. The planner first shows the Regular 48,000 with six heads, from 12,000 down to 6,000, and flags any head too large for its type.

  • 2 models online
  • Sold and installed by AirGreen.
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This page’s tool

Plan your heads

Indicative LogisVert amount: our calculation, with the rates of Hydro-Québec’s participation guide (version 1.10 of September 15, 2026), $120 per 1,000 BTU/h for a cold-climate heat pump and $50 otherwise, applied to the capacity at 17 °F (-8.3 °C) certified by ENERGY STAR Canada, for an outdoor unit of at least 12,000 BTU/h nominal in cooling. The amount depends on the installation date. Only Hydro-Québec confirms the assistance granted.

The models

The 6-head kits available online

The comparison that matters

Weight at 48,000 BTU/h

At 48,000 BTU/h on R-454B, the Max Performance weighs 111.8 kg (246 lb), the Regular 100.7 kg (222 lb), per the Bosch sheets.

Who brings what

  • BOSCHThe unit, its technical sheets, its limited warranty.
  • AirGreenThe on-site assessment, the installation by our refrigeration technicians, start-up and follow-up.

Did you know

Three facts from the Bosch documents

On their sheets, the 48,000 Regular leaves the factory with 4.2 kg of refrigerant, the 48,000 Max Performance with 4.3 kg.

Bosch, 48K Multi Zone Regular and Max Performance sheets, Gen 4, BTC 769208371 B and 769208370 C (01.2026)

The minimum room area depends on the refrigerant charge taken into account (on the 48,000, the releasable charge) and on the head height: for 5 kg, Bosch asks for 15.36 m² (166 ft²) with a head installed between 1.8 and 2.2 m, and 11.26 m² (121 ft²) at 3.0 m.

Bosch, Gen 4 multi-zone installation manual, BTC 769203312 D (04.2026), tables 3 and 5, pp. 6 and 7

To work out the releasable charge, the multi-zone manual starts from 204 g, then adds 393 g per 6,000 to 12,000 head, 482 g per 18,000 head and 1,025 g per 24,000 or 36,000 head; beyond 7.5 m of line, it adds 20 g per metre (6,000 to 18,000 heads) or 50 g per metre (24,000 and 36,000); the table has no row for a 30,000 head.

Bosch, Gen 4 multi-zone installation manual, BTC 769203312 D (04.2026), table 4, p. 7

Warranties

What BOSCH publishes, what the law adds

  • Climate 5000 R-454B: BOSCH limited warranty effective July 1, 2024. One- or two-family home: compressor 10 years; parts 7 years, 10 years if the unit is registered within 90 days. Other buildings: compressor 3 years, parts 1 year. It is void if the unit is moved from its original installation location.
  • Labour: 6 years, legal warranty of good working order (Consumer Protection Act), on installations since October 5, 2026.

Sold and installed by AirGreen. In Montréal, Laval, Longueuil, on the South Shore and the North Shore.

RBQ licence 5645-9605-01: subclasses 15.8, 15.10 and 16. Gas and oil work is done by a licensed partner.

Let’s talk about your project

The size is confirmed by an on-site assessment of heating needs, room by room, before any quote. Sold and installed by AirGreen.

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Sources
  • NEEP cold-climate heat pump list (ashp.neep.org), records by AHRI number, read November 5, 2026.
  • ENERGY STAR certified heat pump dataset (data.energystar.gov, w7cv-9xjt), Canadian market, read again at the source on November 11, 2026.
  • Hydro-Québec, LogisVert participation guide, version 1.10 of September 15, 2026.
  • Bosch, Gen 4 (01.2026) and R-410A (2023) multi-zone sheets; Gen 4 multi-zone manual, BTC 769203312 D (04.2026); R-410A multi-zone manual, BTC 769103307 B (06.2022), table 4.
  • Bosch, 48K Multi Zone Regular and Max Performance sheets, Gen 4, BTC 769208371 B and 769208370 C (01.2026)
  • Bosch, Gen 4 multi-zone installation manual, BTC 769203312 D (04.2026), tables 3 and 5, pp. 6 and 7
  • Bosch, Gen 4 multi-zone installation manual, BTC 769203312 D (04.2026), table 4, p. 7
  • BOSCH warranties: Climate 5000 R-454B, BTC 769209301 A (11.2024).
  • Product pages listed on this page, read November 11, 2026.