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The Omega VI Series is a direct, OEM-fit replacement chassis for older Whalen VI vertical-stack heat pumps commonly found in Toronto condominiums and commercial buildings.
The Whalen VI Series vertical-stack water-source heat pump is a common system in Toronto condominiums and commercial buildings. Many of these units, originally built for R-22 refrigerant, are now at or beyond their lifespan. They often experience compressor failure, leaks, and poor temperature control — and because OEM support has ended, the most reliable and efficient solution is a direct-fit chassis replacement.
At 4Most Energy, we specialize in replacing Whalen VI systems with modern, high-efficiency Omega and Adirondack-Aire drop-in chassis. Our replacements are dimensionally identical to the original system and connect directly to existing risers and wiring — meaning no drywall or plumbing modifications are required.
Ideal for condo retrofits in Downtown Toronto, North York, Mississauga, Vaughan, Markham, Scarborough, and Richmond Hill, it’s the easiest, most reliable way to modernize your Whalen VI system while reducing energy costs and downtime.
| Omega Model | Replaces ClimateMaster Model | Nominal Size (Tons) |
|---|---|---|
| RPC-CM-816-030 | 816-10 | 3/4 |
| RPC-CM-816-040 | 816-15 | 1 |
| RPC-CM-816-060 | 816-20* | 1 ½ |
| RPC-CM-816-080 | 816-28 | 2 |
| RPC-CM-816-100 | 816-30 | 2 ½ |
| RPC-CM-816-120 | 816-36 | 3 |
* Original blower kit replacement may be required. Contact your local sales office for details.
| Omega Model | Refrig. | Size (Tons) |
Nominal CFM |
Cooling* BTUH¹ |
Cooling* EER¹ |
Heating* BTUH² |
Heating* COP² |
Nominal GPM |
WPD PSI |
WPD FT |
|---|---|---|---|---|---|---|---|---|---|---|
| RPC-WH-VIA-020 | R410A | 1/2 | 200 | 6,500 | 12.2 | 8,000 | 4.2 | 1.5 | 4.1 | 10 |
| RPC-WH-VIA/VIO-030 | R410A | 3/4 | 310 | 9,900 | 12.6 | 14,100 | 4.4 | 2.5 | 4.3 | 10 |
| RPC-WH-VIA/VIO-040 | R410A | 1 | 475 | 13,000 | 13.3 | 16,600 | 4.4 | 3.0 | 4.5 | 10 |
| RPC-WH-VIA-060 | R410A | 1 ½ | 600 | 17,600 | 12.1 | 22,600 | 4.2 | 4.5 | 6.9 | 16 |
| RPC-WH-VIA-080 | R410A | 2 | 800 | 24,200 | 12.9 | 27,400 | 4.3 | 6.0 | 4.1 | 10 |
* Nominal capacity performance based on 86°F EWT Cooling, 68°F EWT Heating and rated CFM. Includes fan power 0.365 W/CFM.
1 Cooling performance based on 80°F DB and 67°F WB entering air conditions.
2 Heating performance at 68°F entering air.
4Most Energy specializes in Whalen VI replacements across the Greater Toronto Area, including Downtown Toronto, North York, Mississauga, Vaughan, Markham, Scarborough, and Richmond Hill.
We install direct-fit chassis from Omega, Adirondack-Aire, and Whalen OEM, ensuring your new system matches the original cabinet and connections perfectly.
All Omega VI and Adirondack-Aire VI chassis are dimensionally identical to the original Whalen VI system.
No drywall or plumbing modifications are required, and the replacement is typically completed in 2–4 hours.
All Omega VI and Adirondack-Aire VI chassis are dimensionally identical to the original Whalen VI system.
No drywall or plumbing modifications are required, and the replacement is typically completed in 2–4 hours.
The Whalen VI series was produced over many years, with multiple version updates (1 through 4).
Each version may have slight differences in electrical wiring or connection layout.
Our technicians will identify your version based on the model tag and select the correct OEM or Omega chassis for a perfect fit.
The best solutions are:
Omega VI Series (direct-fit with modern R-410A components)
Adirondack-Aire VI zerOzone (Cold Point Corporation)
Whalen OEM VI Replacement Chassis (for buildings requiring original manufacturer parts)
All options provide modern efficiency, quieter operation, and long-term warranty protection (typically 1-year parts and 5-year compressor).
Call or WhatsApp 4Most Energy to speak directly with a Condo Heat Pump Expert, or upload a picture of your current Whalen unit through our online form.
We’ll identify your version, recommend the right Omega or Adirondack-Aire replacement, and provide a same-day quote with installation and a 1-year labour warranty.
Toronto, Markham, Richmond Hill, Vaughan, Aurora, Newmarket, Scarborough, Brampton, and Mississauga.
Extended Service Area: Stouffville, Oshawa, Barrie, Orangeville, Hamilton, St. Catharines, Guelph, Kitchener.
