Bosch – 4-Zone 27,000 BTU Multi-Zone Outdoor Heat Pump | Regular | R454B | GTA Installation Included
Bosch – 4-Zone 27,000 BTU Multi-Zone Outdoor Heat Pump | Regular | R454B | GTA Installation Included
The Bosch Climate 5000 4-Zone 27,000 BTU Multi-Zone Outdoor Heat Pump (Model: BMS500-AAM027-1CSXRD) allows you to heat and cool up to 4 rooms independently from a single outdoor condenser unit. With a total capacity of 27,000 BTU, this system is well-suited for mid-size homes, townhouses, and multi-room applications where 3-zone capacity is not quite enough.
Running on next-generation R454B refrigerant, it delivers reliable heating down to -25°C (-13°F) with up to 25 SEER2 and 7.0 HSPF2 efficiency — built for Toronto and GTA winters.
Standard installation by Bison Air's licensed HVAC technicians is included with every purchase.
Learn more about our Ductless Multi Zone Heat Pump Installation in Toronto & GTA, or explore our Ductless Single Zone Heat Pump Installation if you only need to condition one room.
⚠️ Important: This Listing Is for the Outdoor Condenser Unit Only
Multi-zone ductless systems are built by combining one outdoor condenser (this listing) with multiple indoor units (heads) purchased separately. The price shown includes the outdoor unit and standard installation only.
Indoor units are selected separately so you can choose the correct size and style for each room — wall mount, ducted, 4-way cassette, or 1-way cassette.
How a multi-zone system is built:
- 4-zone system = 1 outdoor condenser + 4 indoor units (minimum 2 required)
- Each indoor unit is sized and selected per room
- Total indoor unit capacity must be matched to the outdoor unit
📞 Not sure which indoor units to choose? Call us at 416-652-4323 — we'll design the complete system for your home at no charge.
Key Features
- Supports up to 4 independent indoor zones — minimum 2 indoor units required
- Heats down to -25°C (-13°F) — reliable through GTA winters without supplemental heat
- Up to 25 SEER2 (non-ducted configuration) — high cooling efficiency
- 7.0 HSPF2 — consistent across all indoor head configurations
- R454B refrigerant — low global warming potential (low-GWP), future-proofed for upcoming refrigerant regulations
- Compatible with wall mount, ducted, 4-way cassette, and 1-way cassette indoor units — mix and match for your home layout
- Ducted, non-ducted, and mixed configurations supported
- Inverter compressor — continuously modulates output for precise comfort and maximum efficiency
- Whisper-quiet operation — ODU as low as 53 dB
- No additional accessory needed for low ambient cooling
- Self-cleaning mode on compatible indoor units
- ENERGY STAR® & AHRI certified
- cULus listed
- 10-year compressor warranty / 7-year parts warranty (10 years on parts with registration)
Outdoor Unit Specifications – BMS500-AAM027-1CSXRD
| Specification | Details |
|---|---|
| Model Number | BMS500-AAM027-1CSXRD |
| Total Capacity | 27,000 BTU |
| Maximum Zones | Up to 4 indoor units (minimum 2) |
| Refrigerant | R454B |
| Electrical | 208-230V / 1 Phase / 60 Hz |
| MOCP | 25A |
| Liquid Line Ports | (4) x ¼" |
| Suction Line Ports | (3) x ⅜" + (1) x ½" |
| Max Total Pipe Length | 264.4' |
| Max Pipe Length per IDU | 114.8' |
| ODU Dimensions (W x D x H) | 37.24" x 16.14" x 31.89" |
| Cooling Operating Range | -25°C to +50°C (-13°F to +122°F) |
| Heating Operating Range | -25°C to +24°C (-13°F to +75°F) |
| Certifications | ENERGY STAR®, AHRI, cULus |
System Efficiency by Indoor Head Configuration
Efficiency ratings vary depending on the type of indoor units connected. Learn more about SEER2 cooling efficiency and HSPF2 heating efficiency.
| Indoor Head Configuration | SEER2 | EER2 | HSPF2 | Cooling Min/Max (BTU) | Heating Min/Max (BTU) |
|---|---|---|---|---|---|
| Ducted Only | 21.0 | 12 | 7.0 | 7,200 / 32,000 | 8,400 / 28,800 |
| Non-Ducted Only | 25.0 | 13 | 7.0 | 7,200 / 32,000 | 8,400 / 29,000 |
| Mixed Ducted & Non-Ducted | 23.0 | 12.5 | 7.0 | 7,200 / 32,000 | 8,400 / 28,900 |
Non-ducted = wall mount or cassette indoor units. Ducted = concealed ducted air handlers. Mixed = combination of both types on the same outdoor unit.
Compatible Zone Combinations – 27K ODU
The following indoor unit BTU combinations are compatible with this 27,000 BTU outdoor condenser. Indoor unit sizes are listed in thousands of BTU (e.g. 6 = 6,000 BTU, 9 = 9,000 BTU).
| Number of Zones | Compatible Indoor Unit Combinations (BTU) |
|---|---|
| 2 Zones | 6+18 | 9+18 | 12+18 | 18+18 | 6+24 | 9+24 | 12+24 | 18+24 | 9+9 | 9+12 | 12+12 |
| 3 Zones | 6+6+18 | 6+9+12 | 6+9+18 | 6+12+12 | 9+9+9 | 9+9+12 | 9+9+18 | 9+12+12 | 6+6+9 | 6+6+12 | 6+6+6 |
| 4 Zones | 6+6+6+6 | 6+6+6+9 | 6+6+6+12 | 6+6+9+9 | 6+6+9+12 | 6+9+9+9 | 9+9+9+9 | 6+6+6+18 | 6+6+9+18 | 6+9+9+12 |
Minimum 2 indoor units required. If total indoor unit load exceeds nominal outdoor unit capacity, the practical output of every indoor unit will be proportionally reduced — most noticeable during heating mode. Contact us to confirm your planned combination before purchasing.
📞 Not sure which combination is right for your home? Call us at 416-652-4323 for a free system design consultation.
Compatible Indoor Units & Dimensions
Purchase indoor units separately. Choose the type and size that suits each room. All models below are compatible with this outdoor unit.
Wall Mount Indoor Units
| BTU | Model Number | Dimensions (W x D x H) |
|---|---|---|
| 6,000 | BMS500-AAU006-1AHWXD | 31.42" x 9.21" x 11.85" |
| 9,000 | BMS500-AAU009-1AHWXD | 31.42" x 9.21" x 11.85" |
| 12,000 | BMS500-AAU012-1AHWXD | 31.42" x 9.21" x 11.85" |
| 18,000 | BMS500-AAU018-1AHWXD | 38.00" x 9.80" x 12.56" |
| 24,000 | BMS500-AAU024-1AHWXD | 38.00" x 9.80" x 12.56" |
| 30,000 | BMS500-AAU030-1AHWXD | 44.88" x 11.22" x 14.61" |
| 36,000 | BMS500-AAU036-1AHWXD | 44.88" x 11.22" x 14.61" |
Ducted Indoor Units
| BTU | Model Number | Dimensions (W x D x H) |
|---|---|---|
| 9,000 | BMS500-AAU009-1AHDXD | 27.6" x 7.9" x 19.9" |
| 12,000 | BMS500-AAU012-1AHDXD | 27.6" x 7.9" x 19.9" |
| 18,000 | BMS500-AAU018-1AHDXD | 34.7" x 8.3" x 26.5" |
| 24,000 | BMS500-AAU024-1AHDXD | 27.6" x 9.6" x 29.5" |
| 36,000 | BMS500-AAU036-1AHDXD | 47.2" x 11.8" x 29.5" |
| 48,000 | BMS500-AAU048-1AHDXD | 47.2" x 11.8" x 29.5" |
| 60,000 | BMS500-AAU060-1AHDXD | 55.1" x 14.9" x 31.5" |
4-Way Cassette Indoor Units
| BTU | Model Number | Dimensions (W x D x H) |
|---|---|---|
| 9,000 | BMS500-AAU009-1AHCXD | 22.44" x 22.44" x 9.65" |
| 12,000 | BMS500-AAU012-1AHCXD | 22.44" x 22.44" x 9.65" |
| 18,000 | BMS500-AAU018-1AHCXD | 22.44" x 22.44" x 9.65" |
| 24,000 | BMS500-AAU024-1AHCXD | 32.68" x 32.68" x 8.07" |
| 36,000 | BMS500-AAU036-1AHCXD | 32.68" x 32.68" x 9.65" |
| 48,000 | BMS500-AAU048-1AHCXD | 32.68" x 32.68" x 11.3" |
1-Way Cassette Indoor Units
| BTU | Model Number | Dimensions (W x D x H) |
|---|---|---|
| 9,000 | BMS500-AAU009-1AHZXD | 50.31" x 13.19" x 8.98" |
| 12,000 | BMS500-AAU012-1AHZXD | 50.31" x 13.19" x 8.98" |
| 18,000 | BMS500-AAU018-1AHZXD | 50.31" x 13.19" x 8.98" |
Professional Installation – What's Included
Every outdoor unit purchase includes standard installation performed by Bison Air's TSSA-certified technicians across Toronto and the Greater Toronto Area. Learn more about our ductless multi-zone heat pump installation service or our full range of HVAC installation services in Toronto & GTA.
Standard installation includes:
- Outdoor condenser unit (ODU) installation on wall bracket or ground pad
- Refrigerant line set connections to indoor units (standard length per zone)
- Electrical connection and controls setup
- Full system commissioning, testing, and customer walkthrough
📞 Multi-zone installations are site-specific. Call us at 416-652-4323 before purchasing so we can assess your site at no obligation.
Why Choose Bison Air
- ✔ TSSA Certified HVAC Contractor
- ✔ Fully Licensed & Insured HVAC Technicians
- ✔ Registered HRSP Heat Pump Rebate Contractor
- ✔ Standard Installation Included — No Hidden Fees
- ✔ Professional Multi-Zone System Design & Equipment Selection
- ✔ Clean, Organized Installations
- ✔ Financing Available — Pre-qualify in Seconds
- ✔ Serving Toronto, York Region, Peel Region, Barrie & all GTA Communities
Financing & Rebates Available
Upgrading your heating and cooling system is an important investment. Bison Air offers flexible financing options to help homeowners install high-efficiency HVAC systems with manageable payment plans. Some energy-efficient systems may also qualify for available rebate programs in Ontario.
Learn more about available incentives on our Heat Pump Rebates page.
Our team can help you understand the available financing and rebate options.
Related Heat Pump Services in Toronto
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- Heat pump services in Toronto
- HVAC Services in Toronto & GTA
- HVAC Installation Toronto & GTA
Areas We Serve
Bison Air provides ductless multi-zone heat pump installation throughout Toronto and the Greater Toronto Area, including:
Toronto| North York | Scarborough | Etobicoke | Vaughan | Markham | Richmond Hill | Aurora | Newmarket | East Gwillimbury | King City | Stouffville | Mississauga | Brampton | Oakville | Milton | Burlington | Barrie | Innisfil | Bradford | Keswick | Orillia | Ajax | Pickering | Whitby | Oshawa | Orangeville
Request a Free Multi-Zone System Design Consultation
Our team will help you select the right indoor units for each room, confirm zone combinations, check rebate eligibility, and provide professional installation across Toronto and the Greater Toronto Area.
📞 Call us: 416-652-4323
🔗 Or fill out the form for a free consultation →
All multi-split condensers must have a minimum of two indoor units installed.
Documents:
Bosch Climate 5000 Series Ductless (R-454B Versions)
📄 One-Way Cassette Installation and Operating Instructions
📄 One-Way Cassette User Manual
📄 One-Way Cassette Service Manual
📄 Four-Way Cassette Installation and Operating Instructions
📄 Four-Way Cassette User Manual
📄 Four-Way Cassette Service Manual
📄 Ducted Type Installation and Operating Instructions
📄 Multi-Zone Ductless Installation and Operating Instructions
📄 Multi-Zone Ductless Service Manual
📄 Wall-Mounted Ductless Installation and Operating Instructions
📄 Wall-Mounted Ductless User Manual
📄 Wall-Mounted Ductless Service Manual
📄 Remote Controller Wall-Mounted Ductless User Manual
📄 Wired Wall Thermostat Installation Instructions
📄 Remote Controller One-Way & Four-Way Cassette User Manual
📄 24 Volt Interface Installation Instructions
Warranty:
Parts: 10 Years
Labor: 1 Years
Extend labor warranty 10 years for $700.
The price includes complete installation and warranty and is based on standard installation. However, the price may vary depending on the location and any extra work required, such as high voltage wiring, duct modification, crawl space, or any other specific installation condition.
This information is general. Contact us for proper heat pump size, talk to an advisor, or request an in-home consultation.
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