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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.
✅ Equipment only →Just add to cart.
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 Whalen Model |
Nominal Size (Tons) |
|---|---|---|
| RPC-WH-VIA-020 | WA/G-020 | 1/2 |
| RPC-WH-VI*-030 | WA/G-030 | 3/4 |
| RPC-WH-VI*-040 | WA/G-040 | 1 |
| RPC-WH-VIA-060 | WA/G-060 | 1 ½ |
| RPC-WH-VIA-080 | WA/G-080 | 2 |
* Available in Gen Zero (VI0) and Gen 1–4 (VIA) versions. Gen Zero comes with a harness install kit.
Verify chassis dimensions at the time of order.
| Omega Model | Refrig. | Size (Tons) | Nominal CFM | Cooling* | Heating* | Nominal GPM | WPD | |||
|---|---|---|---|---|---|---|---|---|---|---|
| BTUH1 | EER1 | BTUH2 | COP2 | PSI | 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.
Posted on FoadTrustindex verifies that the original source of the review is Google. Excellent service at a very reasonable price! The team was professional, efficient, and really went above and beyond to make sure everything was done right. I’m very happy I found them—working with people who truly care about their customers makes all the difference. I wouldn’t hesitate to recommend their services to anyone looking for great quality and value.Posted on Eddy LeeTrustindex verifies that the original source of the review is Google. Fantastic service. On a Friday (before a long weekend and with a planned pool party) I noticed my pool heater was not working and have an ignition error. I called up 4Most Energy and they had someone out there that same day at 7PM to diagnose and fix the issue. Great prompt service!Posted on E LTrustindex verifies that the original source of the review is Google. Rey and his technician were prompt, knowledgeable and helpful thoughout the process of assessing the heating needs for my pool. My pool heater had gone end of life and they patiently walked me through options and I settled on a new pool heater. He came the next day to install and even optimized the pipping that my pool maintenance company had previously put in. Highly recommend 4Most Energy and Rey.Posted on ness malTrustindex verifies that the original source of the review is Google. 4most energy came to change my furnace. From the onset Ray provided excellent customer service and took the time to explain everything. He was honest and upfront. His team showed up on time and completed the work professionally. Would recommend them for anyone looking to upgrade their furnace.Posted on Vignesh BharadwajTrustindex verifies that the original source of the review is Google. It was a delight to work with 4most Energy from the day I first spoke to Rey over the phone to the day my boiler installation was done. The guy did not compel me to haggle or think twice about anything, whether the cost or the quality of the brand. He was happy to answer my million questions. The day of the installation was just as smooth. The team of two showed up right on time, and finished the job by evening as promised. The guys did an amazing job - very neat work, left the place tidy, took away my old unit and cleaned up everything without a spot on their way out. Really appreciate their professionalism. My full marks to 4most Energy - keep up the great work guys!Posted on Manuel PereiraTrustindex verifies that the original source of the review is Google. The job was great. They were very clean and fast. We are very happy with the service. Thank you!Posted on Matti SaranTrustindex verifies that the original source of the review is Google. Sam and the team were excellent were amazing explained things very well. Thank you so muchPosted on C.J. CroccoTrustindex verifies that the original source of the review is Google. Rey and his team were amazing! They were able to come in and find the issue with my heater. Replaced a week later and works like a charm. They are super knowledge and give you every option to work within your budget.Posted on Sarina TakiTrustindex verifies that the original source of the review is Google. I had an exceptional experience with 4mostenergy for my recent AC installation. From start to finish, the service was top-notch. The team arrived on time, worked efficiently, and the installation was flawless. They were incredibly professional and attentive to every detail, ensuring that everything was set up perfectly. I highly recommend 4MostEnergy for their outstanding service and expertise!Posted on Ivan SingTrustindex verifies that the original source of the review is Google. Attention to detail and friendly service. Honest pricing. Cleaned up after completion of installation. Highly recommend.
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.
Off-season pricing means the best deals of the year on high-efficiency air conditioners.
Save Big on Lennox Furnaces — Limited Time!
Get a new high-efficiency Lennox furnace with no payments for up to 6 months. Premium comfort, top-tier performance.
Simple estimates, flexible payments, pro installation, and industry-leading warranties.