EcoTemp 3 Ton 15.2 SEER2 AC with 80K BTU Condensing Gas Furnace – 17-1/2" Cabinet
This package covers the most common gas split-system sizing for a typical American family home: 3 tons of cooling and 80,000 BTU of heat. The W5A5S36AKDWA R-454B condenser and W5AM36M17XA coil rate 15.2 SEER2 (AHRI 217403116). The WFSX080B048B furnace delivers 78,000 BTU at 97.0% AFUE upflow or horizontal and meets ENERGY STAR 5.0 North criteria. Everything indoors fits a 17-1/2 in. width, so contractors replacing an aging 80% furnace and AC can usually reuse the same closet or basement location while moving to condensing, PVC-vented heat.
Is a 3 Ton, 80K BTU Gas System the Right Size?
This combination fits a wide middle band of homes, often around 1,500 to 1,900 square feet in mixed and cold climates. It suits Mid-Atlantic, Midwest, Ohio Valley, and Pacific Northwest homes where both summer and winter loads are significant. With 78,000 BTU of output, it covers considerably more heat loss than the 60K version while keeping the same cooling equipment.
Ductwork, insulation, air sealing, and local design temperatures set the true requirement, and the 4%-per-1,000-ft derate above 2,000 ft also applies. If the existing ducts were sized for a smaller system, the 3 ton airflow may call for return upgrades. A Manual J load calculation and a duct check together prevent noisy registers and short cycling.
Ideal for: Family homes in four-season climates, two-story homes with finished basements, and like-for-like upgrades from an 80% furnace and older AC to a condensing gas system.
Need more capacity? Move up to the EcoTemp 3 Ton 100K BTU Gas System (WFSX100C060B) for more heat and a 15.5 SEER2 rating.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, ductwork, climate, elevation, and a proper load calculation. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Condenser | W5A5S36AKDWA — 3 Ton Single-Stage R-454B Air Conditioner |
|---|---|
| Indoor Coil | W5AM36M17XA — 3 Ton Multipoise Cased A-Coil, 17-1/2" Wide, Factory TXV |
| Gas Furnace | WFSX080B048B — 80,000 BTU Input / 78,000 BTU Output Condensing Furnace |
| Furnace Cabinet Width | 17-1/2" (35" tall) |
| Cooling Efficiency | 15.2 SEER2 (AHRI 217403116) |
| Heating Efficiency | 97.0% AFUE Upflow & Horizontal / 95% AFUE Downflow — ENERGY STAR 5.0 North (Upflow/Horizontal) |
| Refrigerant | R-454B |
| Compressor | Single-Stage Scroll Compressor |
| Condenser Electrical | 208/230V, Single Phase, 60 Hz — 17.6 MCA, 30A Max Fuse/Breaker |
| Furnace Electrical | 115V, Single Phase, 60 Hz — 13.4 Unit Ampacity, 15A Breaker |
| Manufacturer Warranty | 10-Year Parts with Timely Registration; 20-Year Furnace Heat Exchanger |
The WFSX080B048B supports cooling airflow up to 1,625 CFM, enough to run the 3 ton W5AM36M17XA coil. The coil is 29-3/4 in. tall and 17-1/2 in. wide, matching the furnace for a flush stack of about 64-3/4 in. This page also offers natural gas or LP setup, a copper line set or flush kit, and a thermostat as optional add-ons. You can browse more 3 ton 92%+ AFUE gas furnace systems.
Condenser, Coil & Furnace Features
W5A5S36AKDWA Condenser & W5AM36M17XA Coil
- 36,000 BTU single-stage scroll condenser using R-454B
- 15.2 SEER2 certified with this coil and furnace match
- Two-row condenser coil with 17.7 sq. ft. of face area
- Rated with 7/8 in. vapor and 3/8 in. liquid lines
- 8°F subcooling charging target with the TXV coil
- Support feet accessory raises the unit 4 in. for coastal, windy, or rooftop sites
- W5AM36M17XA: 29-3/4 in. tall, 17-1/2 in. wide, 3/4 in. suction connection
- Foil-faced R-2.1 insulated cabinet for quiet operation
- Factory UV knockouts for an add-on UV light
- Coil adapter kits available for offset transitions
WFSX080B048B 80K BTU Condensing Furnace
- 97.0% AFUE upflow and horizontal; 95.0% downflow
- 78,000 BTU output in the standard 17-1/2 in. cabinet
- Multi 18-speed, constant-torque ECM blower (3/4 HP)
- 370–1,625 CFM cooling airflow range at rated static
- 3-digit diagnostic display for fault and status codes
- NFC antenna for tap-to-configure setup with a smartphone app
- Insulated heat exchanger compartment with a stainless secondary heat exchanger
- Four-position installation with twelve venting configurations
- Gas input certified to 2,000 ft elevation, with documented derate above
- Propane-convertible with the manufacturer's accessory kit
Specifications & Manuals
Documentation includes condenser, coil, and furnace product data, installation instructions, line-set and venting tables, wiring diagrams, and warranty terms for selection, installation, and service.
Frequently Asked Questions
Can I keep my existing ductwork with this 3 ton system?
Often, yes, if the ducts are sized and sealed for 3 tons of airflow. The furnace is rated for cooling at 0.50 in. w.c. external static pressure, so have a technician measure static pressure and inspect returns before installation.
Does this system come with a thermostat or line set?
No. The system includes the condenser, coil, and furnace. The thermostat, copper line set or flush kit, and LP conversion are optional add-ons on this page.
How is the W5AM36M17XA coil cleaned and serviced?
It has a split delta plate for quick access. Once the door is removed, the coil slides out the front without tools. Side-mounted tubing keeps the TXV easy to reach.
What does the furnace's 3-digit display show?
The WFSX control board displays fault and status codes on an easy-to-read 3-digit display, so technicians can diagnose issues without guesswork. The code meanings are listed in the installation instructions.
How does altitude affect the 80K furnace's capacity?
Gas input is certified to 2,000 ft. Above that, U.S. installations reduce the rating 4% for each 1,000 ft above sea level, per the National Fuel Gas Code and the furnace instructions.
What is the NFC feature on the WFSX furnace?
An on-board NFC antenna lets a technician configure settings by tapping a phone running the manufacturer's service app against the furnace, which simplifies setup.
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ICP Warranty Certificate
