
Panasonic INTERIOS Central Heat Pump
Heat and cool your home through its ductwork with a Panasonic inverter heat pump and matching air handler. Compare the standard and cold-climate models below, or ask Home Trade Standards for an installation quote in Toronto and the GTA.
Will INTERIOS work with my ductwork?
INTERIOS pairs an outdoor air-source heat pump with an indoor air handler. The multi-position air handler can supply air up, down or horizontally. Its variable-speed blower adjusts airflow as duct pressure changes.
For a Toronto condo or townhouse, start with the outdoor-unit location, building approval and the ductwork serving your home. If your suite heat pump connects to a shared building water loop, explore water-source replacement options.

Panasonic INTERIOS model numbers and performance
Read the outdoor model number first. CU-HE identifies the cold-climate series and CU-E identifies the standard series. Compare the matching indoor unit and the heating capacity Panasonic reports at −15°C. SEER2 measures seasonal cooling efficiency.
Cold-climate (Extreme Heat) outdoor units and matching air handlers
| Outdoor unit | Indoor unit | SEER2 | Heat at −15°C (BTU/h) |
|---|---|---|---|
| CU-HE18YAHK6 | CS-HE18YAHK6 | 18.0 | 16,500 |
| CU-HE24YAHK6 | CS-HE24YAHK6 | 17.4 | 22,600 |
| CU-HE30YAHK6 | CS-HE30YAHK6 | 16.2 | 24,000 |
| CU-HE36YAHK6 | CS-HE36YAHK6 | 16.0 | 34,400 |
| CU-HE48YAHK6 | CS-HE48YAHK6 | 15.6 | 46,000 |
| CU-HE55YAHK6 | CS-HE60YAHK6 | 15.3 | 48,500 |
Considering the CU-HE24YAHK6 with CS-HE24YAHK6? Request a quote for this matched system (AHRI 212396493).
Standard outdoor units and matching air handlers
| Outdoor unit | Indoor unit | SEER2 | Heat at −15°C (BTU/h) |
|---|---|---|---|
| CU-E18YAHK6 | CS-HE18YAHK6 | 17.0 | 11,000 |
| CU-E24YAHK6 | CS-HE24YAHK6 | 17.0 | 19,400 |
| CU-E30YAHK6 | CS-HE30YAHK6 | 17.3 | 17,800 |
| CU-E36YAHK6 | CS-HE36YAHK6 | 16.9 | 20,500 |
| CU-E48YAHK6 | CS-HE48YAHK6 | 15.8 | 36,000 |
| CU-E60YAHK6 | CS-HE60YAHK6 | 14.7 | 34,600 |
The two largest configurations share air handler CS-HE60YAHK6. The 4.5-ton cold-climate pairing uses CU-HE55YAHK6 and delivers 48,500 BTU/h at −15°C. The 5-ton standard pairing uses CU-E60YAHK6 and delivers 34,600 BTU/h at the same temperature.
Download Panasonic’s specification brochure (PDF)Request a Toronto & GTA installation quote
Send your model number, property location and photos of your indoor unit and proposed outdoor location. HTS can review equipment sizing, ductwork, controls, electrical requirements and backup heat, then confirm availability and installation pricing.