3 Ton EcoTemp 14.5 SEER2 R-454B Heat Pump System – W5H5S36AKAAA & WCHL365AB
The EcoTemp W5H5S36AKAAA and WCHL365AB deliver 36,000 BTU/h of R-454B heating and cooling at 14.5 SEER2 for typical mid-size family homes. The 3 ton outdoor unit moves up to a two-row condenser coil yet stays only 31-11/16" tall, the same height as the 1.5 ton model. That low profile works well under windows and decks. The WCHL365AB air handler pairs a 1/2 HP multi-tap ECM blower with an A-coil and a 17-5/8" wide cabinet.
Is a 3 Ton Heat Pump System the Right Size?
Three tons is one of the most common residential sizes. It covers loads around 36,000 BTU/h, though the right size depends on the home itself. Insulation, attic conditions, glass area and duct design can push the load above or below 3 tons. Get a quick estimate with the BTU and tonnage calculator before committing.
Plan the ductwork around the WCHL365AB's 1,050 CFM nominal airflow. If you add a larger heat strip, note the manufacturer's minimum airflow for each heater size. Strips of 5, 8, 10 and 15 kW are offered with this system.
Ideal for: Mid-size family homes, ranch homes, replacements of existing 3 ton heat pumps, and installs where a low-profile outdoor unit is preferred.
Need more capacity? Step up to the 3.5 Ton EcoTemp W5H5S42AKAAA & WCHL425AC Heat Pump System for homes requiring additional heating and cooling capacity.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, climate, duct design, window load, occupancy and desired indoor temperature. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | W5H5S36AKAAA — 3 Ton Single-Stage R-454B Heat Pump |
|---|---|
| Indoor Air Handler | WCHL365AB Multipoise ECM Fan Coil (17.5" Cabinet) |
| Application | Residential Ducted Split System Heat Pump — Heating & Cooling |
| Refrigerant | R-454B |
| Compressor | Single-Stage Scroll Compressor |
| Backup Heat | Electric Heat Strip Selected at Checkout (5, 8, 10 or 15 kW) |
| Electrical | 208/230V, Single Phase, 60 Hz Heat Pump |
| Air Handler Electrical | 208/230V, Single Phase |
The W5H5S36AKAAA weighs 172 lbs and ships with 7.6 lbs of R-454B. Its 2-row, 17.2 sq ft condenser coil sits in a 31-3/16" square cabinet. It needs a 19.2 MCA circuit with a 30 amp max breaker, and both the vapor valve and the rated vapor line are 3/4". The WCHL365AB stands 49-5/8" tall, weighs 148 lbs and takes a 16" x 20" filter. Single components are also listed: the W5H5S36AKAAA heat pump and WCHL365AB air handler.
Heat Pump & Air Handler Features
W5H5S36AKAAA Outdoor Heat Pump
- Nominal 36,000 BTU/h heating and cooling capacity
- 2-row condenser coil with 20 fins per inch
- Low 31-11/16" cabinet height
- 1/4 HP direct-drive condenser fan, 3,500 CFM
- Single-stage scroll compressor
- Internal pressure relief valve and thermal overload
- Loss-of-charge switch for compressor protection
- Accessory crankcase heater and time-delay relay available
- Low-ambient cooling capability with accessory kit
- Low-GWP R-454B refrigerant
WCHL365AB ECM Air Handler
- 1/2 HP multi-tap ECM motor, 1,050 CFM nominal
- A-coil with 3/4" suction and 3/8" liquid sweat connections
- Refrigerant leak detection dissipation system
- Factory-installed R-454B TXV
- Tested for condensate disposal beyond AHRI requirements
- Super-thick R-4.2 insulation with vapor barrier
- Insulated filter door for an improved air seal
- Accepts heaters from 5 to 20 kW
- Pre-painted dark gray galvanized steel casing
- Multipoise upflow or horizontal installation
Specifications & Manuals
Find 3 ton expanded heating and cooling performance, charging subcooling, accessory usage guidelines and WCHL365 heater minimum airflow requirements in these documents.
Frequently Asked Questions
Is the 3 ton outdoor unit louder than the smaller EcoTemp sizes?
Yes, somewhat. The W5H5S36AKAAA is rated 76 dBA, compared with 70–72 dBA for the 1.5 to 2.5 ton models. The NASA00201SJ sound blanket and careful placement can help near bedrooms.
What minimum airflow is needed with a 15 kW heat strip?
The WCHL spec sheet lists a 920 CFM minimum for the 36 size with a 15 kW heater. Speed tap 4 (white wire) is reserved for electric heat and must stay on tap 4.
What subcooling should be used when charging the 3 ton system?
The W5H5S product data lists 10°F (5.6°C) of required subcooling for the 36 size with a TXV-type expansion device.
Will the 3 ton condenser fit under a window or deck?
The W5H5S36AKAAA is only 31-11/16" tall on a 31-3/16" square base, the same height as the 1.5 ton model. Allow the clearances shown in the spec sheet.
Is a crankcase heater included with the 3 ton heat pump?
It is an accessory (NASA00601CH for sizes 18 to 36). The manufacturer requires one for low-ambient cooling and long-line applications.
Who is the 3 ton EcoTemp system a good match for?
Homeowners and contractors replacing a 3 ton system, or sizing a mid-size home near 36,000 BTU/h, who want a low-profile outdoor unit and a simple single-stage R-454B system.
W5H5S Technical SpecificationsW5HS5 Installation InstructionsW5HS5 BrochureWCHL Technical Specifications
