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The Omega 816 Series are a direct replacement for ClimateMaster 816 units. The chassis is a direct drop-in for the existing ClimateMaster unit, allowing for a fast, simple and easy installation. Available in various electrical configurations and 2 water connection configurations based on replacement requirements.
✅ Equipment only →Just add to cart.
The ClimateMaster 816 vertical-stack water-source heat pump was one of the most widely installed models in high-rise condominiums across the Greater Toronto Area. These systems provided dependable heating and cooling for years but are now approaching or beyond their service life.
Because the original 816 models use R-22 refrigerant and are no longer supported by the manufacturer, the best solution today is a direct-fit replacement chassis from modern OEM or aftermarket suppliers.
At 4Most Energy, we specialize in ClimateMaster 816 replacements for condos and commercial units in Downtown Toronto, North York, Mississauga, Vaughan, Markham, Scarborough, and Richmond Hill.
We install drop-in chassis replacements that match your existing cabinet and risers, providing a quick, quiet, and energy-efficient upgrade with no drywall or plumbing modifications.
| 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 4Most Energy in Toronto, Ontario, Canada.
Supplied, Installed, and Supported by 4Most Energy
| Model | Capacity (Tons) | Airflow (CFM) | Cooling (BTUH) | EER | Heating (BTUH) | COP | Water Flow (GPM) | Pressure Drop (PSI) |
|---|---|---|---|---|---|---|---|---|
| RPC-CM-816-030 | ¾ Ton | 310 | 9,900 | 12.6 | 14,100 | 4.4 | 2.5 | 4.3 |
| RPC-CM-816-040 | 1 Ton | 475 | 13,000 | 13.3 | 16,600 | 4.4 | 3.0 | 4.5 |
| RPC-CM-816-060 | 1½ Ton | 600 | 17,600 | 12.1 | 22,600 | 4.2 | 4.5 | 5.1 |
| RPC-CM-816-080 | 2 Ton | 800 | 24,000 | 13.6 | 30,400 | 4.5 | 6.0 | 6.5 |
| RPC-CM-816-100 | 2½ Ton | 1,000 | 30,000 | 13.0 | 36,500 | 4.3 | 7.5 | 5.6 |
| RPC-CM-816-120 | 3 Ton | 1,200 | 35,500 | 13.0 | 41,000 | 4.3 | 9.0 | 4.8 |
*Performance based on 86°F EWT Cooling, 68°F EWT Heating, rated CFM. Includes fan power (0.365W/CFM).
Cooling at 80°F DB / 67°F WB entering air, heating at 68°F entering air.
• 1-Year Manufacturer Parts Warranty
• 1-Year Full Labor Warranty (extendable)
• Direct-fit replacement for Climatemaster 816/817, McQuay CCH/CCW, and Whalen WSHP units
• Serving Condos across GTA & Ontario
Supplied, Installed, and Supported by 4Most Energy
| Omega Model | A (in) | B (in) | C (in) | D (in) | E (in) | F (in) | 816 Outlet | 816 Inlet | Opt. 817 Outlet | Opt. 817 Inlet | Weight (lbs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RPC-CM-816-030 | 15 ½ | 16 | 14 ½ | 24 ⅜ | 15 ⅝ | 36 ⅜ | ½ HA | ½ HA | ½ FPT | ½ FPT | 70 |
| RPC-CM-816-040 | 15 ½ | 16 | 14 ½ | 24 ⅜ | 15 ⅝ | 36 ⅜ | ½ HA | ½ HA | ½ FPT | ½ FPT | 75 |
| RPC-CM-816-060 | 18 ½ | 19 | 17 ½ | 22 ⅝ | 18 ⅝ | 41 ⅜ | ½ HA | ½ HA | ½ FPT | ½ FPT | 100 |
| RPC-CM-816-080 | 22 ½ | 22 ⅞ | 21 ½ | 22 | 22 ½ | 41 ⅜ | ½ HA | ½ HA | ½ FPT | ½ FPT | 125 |
| RPC-CM-816-100 | 22 ½ | 22 ⅞ | 21 ½ | 22 | 22 ½ | 41 ⅜ | ¾ HA | ¾ HA | ¾ FPT | ¾ FPT | 130 |
| RPC-CM-816-120 | 22 ½ | 22 ⅞ | 21 ½ | 22 | 22 ½ | 41 ⅜ | ¾ HA | ¾ HA | ¾ FPT | ¾ FPT | 135 |
* Original blower kit replacement may be required for the original 816-20 unit. Contact 4Most Energy for site verification.
Legend: HA = Hose Adapter, FPT = Female Pipe Thread.

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.
Most Toronto condos built between the late 1990s and early 2010s were equipped with ClimateMaster 816 vertical stack heat pumps — especially in buildings across Downtown Toronto, North York, Mississauga, Vaughan, and Markham.
You can confirm your model by checking:
Some versions were rebranded under Carrier or McQuay, but the model number still starts with 816- if it’s from this series.
Absolutely. We specialize in direct-fit replacements for the 816 series across the GTA. Our licensed TSSA-certified technicians remove the old chassis and install a new high-efficiency R-410A unit — typically within a few hours and without disturbing your suite finishes.
Most 816 models use R-22 refrigerant, which is now phased out in Canada. Once the compressor fails, repair costs can exceed replacement value. A new R-410A system improves efficiency by 30-40 %, operates more quietly, and ensures future serviceability.
Both are manufactured to match the form, fit, and function of the original 816 model.
Check the model tag on your existing ClimateMaster unit (e.g., 816-10, 816-15, 816-20).
Use this guide:
Omega Model | Replaces ClimateMaster Model | Nominal Size (Tons) |
RPC-CM-816-030 | 816-10 | ¾ ton |
RPC-CM-816-040 | 816-15 | 1 ton |
RPC-CM-816-060 | 816-20* | 1 ½ tons |
RPC-CM-816-080 | 816-28 | 2 tons |
RPC-CM-816-100 | 816-30 | 2 ½ tons |
RPC-CM-816-120 | 816-36 | 3 tons |
* Original blower kit replacement may be required. |
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.
Need help? Our team is just a message away