Panasonic 4-Zone 24,000 BTU Multi-Zone Heat Pump – CU-4E24RBU-5 R-410A
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The Panasonic CU-4E24RBU-5 is a 24,000 BTU outdoor unit for a 2–4-zone ductless heat pump. One outdoor unit runs two to four indoor units, each with its own temperature control, so you can heat and cool up to four rooms where each room has a modest heat load. It runs on R410A refrigerant and heats down to −20 °C (−5 °F).
⚠️ Outdoor unit only. This price includes the outdoor unit and its standard installation. Indoor units are sold separately, and every multi-zone system needs at least 2 indoor units. Add the E-Series indoor units you need for each room.
- ✓ Standard installation included for the outdoor unit
- ✓ 22 SEER2 and 9.1 HSPF2 (Region IV, wall-mount combination)
- ✓ Heats down to −20 °C (−5 °F) outdoors
- ✓ Up to 230 ft of total piping, up to 82 ft per room
- ✓ 10-year parts and 1-year labour warranty
- ✓ Financing available, with no upfront payment options
🧩 How to Build Your System
1. Choose this outdoor unit
Runs 2 to 4 indoor units, 24,000 BTU of rated cooling.
2. Pick an indoor unit for each room
E-Series wall units from 5,000 BTU, sized to each room.
3. Stay within the capacity limit
Total connected indoor capacity: 15,400–46,400 BTU/h.
4. We confirm the design
We check each room's heat load and the piping runs before installation.
If the indoor units together ask for more than the outdoor unit can deliver, each room gets proportionally less. We size the combination so that does not happen on design days.
🏠 Compatible Indoor Units
| Size | Indoor model | Type | Works with CU-4E24RBU-5 | Pipe adapter needed |
|---|---|---|---|---|
| 5,000 BTU | CS-ME5RKUA | Wall mount (E-Series) | ✓ | — |
| 7,000 BTU | CS-ME7RKUA | Wall mount (E-Series) | ✓ | — |
| 9,000 BTU | CS-E9RKUAW | Wall mount (E-Series) | ✓ | — |
| 12,000 BTU | CS-E12RKUAW | Wall mount (E-Series) | ✓ | CZ-MA1P-US |
| 18,000 BTU | CS-E18RKUAW | Wall mount (E-Series) | ✓ | CZ-MA1P-US |
| 24,000 BTU | CS-E24RKUAW | Wall mount (E-Series) | ✓ | CZ-MA2P-US + CZ-MA3P-US |
| 9,000–24,000 BTU | CS-XE##WKUAW | Wall mount (ClimaPure XE) | 12,000 BTU only (per Panasonic 2024/25 catalog) | CZ-MA1P-US |
Panasonic also approves its 4-way cassette and slim ducted E-Series indoor units with this outdoor unit; ask us if you want one. The 24,000 BTU ClimaPure XE head is single-zone only. Required pipe adapters are listed in your written quote. Source: Panasonic CU-4E24RBU-5 submittal and the R410A catalog combination table.
❄️ Key Features
- ✓ 2 to 4 rooms from one outdoor unit, each with its own temperature
- ✓ Heating to −20 °C (−5 °F)
- ✓ Inverter compressor that matches output to what the rooms need
- ✓ Long piping runs: up to 230 ft total, up to 82 ft per room, 147.6 ft without extra refrigerant
- ✓ Mix wall-unit sizes to suit each room
- ✓ Proven R410A platform with wide indoor-unit choice
📋 Technical Specifications
| Specification | CU-4E24RBU-5 |
|---|---|
| Zones (indoor units) | 2–4 |
| Rated cooling (min–max) BTU/h | 24,000 (10,200–31,400) |
| Rated heating (min–max) BTU/h | 37,800 (14,300–48,500) |
| Heating at −8 °C (17 °F) BTU/h | 28,000 |
| SEER2 / EER2 (wall-mount combination) | 22 / 12.55 |
| HSPF2 Region IV (wall-mount combination) | 9.1 |
| SEER2 / HSPF2 (ducted combination) | 19.0 / 8.8 |
| SEER / HSPF (submittal) | 22 / 10 |
| Total connected indoor capacity | 15,400–46,400 BTU/h |
| Lowest heating temperature | −20 °C (−5 °F) |
| Power supply | 208–230 V, 1 ph |
| MCA / MOCP | 30 A / 45 A |
| Total piping length (max) | 230 ft |
| Piping per room (max) | 82 ft |
| Max height difference | 49 ft |
| Outdoor sound, cooling / heating | 55 / 55 dB(A) |
| Dimensions H × W × D (in), weight | 39⅜ × 37 × 13⅜ · 183 lb |
Sources: Panasonic submittal (capacities, electrical, piping, dimensions; prints SEER/HSPF on the older test basis) and Panasonic Canada product page (SEER2/EER2/HSPF2). Efficiency depends on the indoor units chosen.
Documents: Submittal – CU-4E24RBU-5 · Installation Manual – CU-4E24RBU-5 · Service Manual – CU-4E24RBU-5 · Multi-Zone System brochure with combination chart – CU-3E19RBU-5 · Panasonic R410A Heat Pump Solutions Catalog (2024/25)
🔧 What Standard Installation Includes
- ✓ Outdoor unit set in place
- ✓ Electrical connection to the outdoor unit
- ✓ Vacuum, leak test, startup and commissioning of the full system
- ✓ 1-year labour warranty and warranty registration
Each indoor unit includes its own mounting, refrigerant line set, drain and wiring up to 20 ft. Quoted as extras when needed: wall bracket or snow stand for the outdoor unit, and line set or wiring beyond 20 ft (charged per foot). We confirm the line-set route, electrical capacity and mounting before the job, and every extra is quoted in writing before work starts.
🛡️ Warranty
- ✓ Parts: 10 years (Panasonic)
- ✓ Labour: 1 year from Bison Air, included
- ✓ Optional 10-year labour warranty on the outdoor unit (condenser): ask us for details
💰 Rebates & Financing
Rebate eligibility for the CU-4E24RBU-5 depends on the full indoor and outdoor combination and the program rules at the time you apply. As a registered HRSP contractor, we check eligibility before you buy and help with the paperwork. See Heat Pump Rebates Toronto and the step-by-step rebate guide.
Prefer monthly payments? HVAC financing through Financeit: pre-qualify in seconds without affecting your credit score.
🏆 Why Buy Your Panasonic from Bison Air
- ✓ Authorized Panasonic dealer, listed on Panasonic's dealer locator
- ✓ TSSA Certified HVAC Contractor
- ✓ Fully Licensed & Insured HVAC Technicians
- ✓ Registered HRSP Heat Pump Rebate Contractor
- ✓ Standard Installation Included – No Hidden Fees
- ✓ Professional System Design & Equipment Selection
- ✓ Clean, Organized Installations
- ✓ 1-year labour warranty on every installation
- ✓ Serving Toronto, York Region, Peel Region, Barrie & all GTA Communities
🔗 Related
- ✓ Multi Zone Ductless Installation
- ✓ E-Series Indoor Units
- ✓ 2-zone CU-2E18SBU-5
- ✓ 2–3-zone CU-3E19RBU-5
- ✓ R32 Multi-Zone Option: ClimaPure XZ
- ✓ Panasonic Heat Pump Installation
- ✓ All Panasonic Heat Pumps
- ✓ Mini Split Sizing Guide
- ✓ What Is a Cold Climate Heat Pump?
- ✓ Heat Pump Rebates
- ✓ HVAC Financing
📍 Areas We Serve
Panasonic 2–4-zone heat pump installation throughout Toronto and the GTA:
Toronto · North York · Scarborough · Etobicoke · Vaughan · Markham · Richmond Hill · Aurora · Newmarket · East Gwillimbury · King City · Stouffville · Mississauga · Brampton · Oakville · Milton · Burlington · Barrie · Innisfil · Orillia · Bradford · Keswick · Ajax · Pickering · Whitby · Oshawa · Orangeville
❄️ Plan Your Multi-Zone System
Tell us which rooms you want to heat and cool. We will design the indoor and outdoor combination and give you a clear written price.
or fill out our form for a free consultation · Serving Toronto & the GTA
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