EcoTemp 2.5 Ton AC & 80,000 BTU 97% AFUE Condensing Furnace System – 17-1/2" Cabinet
This system is built for homes with real winters that still need solid summer cooling. The W5A5S30AKAWA 2.5 ton R-454B condenser and W5AM30M17XA coil deliver 15.2 SEER2 cooling (AHRI 214966660). The WFSX080B048B condensing furnace produces 78,000 BTU of heat at 97.0% AFUE upflow or horizontal and meets ENERGY STAR 5.0 North criteria in those positions. Its cabinet stays at 17-1/2 in. wide, the standard replacement width, which makes it a practical upgrade for Midwest, Northeast, and Mountain West homeowners replacing an older, lower-efficiency furnace of similar output.
Is a 2.5 Ton, 80K BTU Gas System the Right Size?
Many 1,200 to 1,600 square foot homes in northern climates fit this profile. They need about 2.5 tons of cooling on the hottest days, but their heat loss at the winter design temperature is greater than 58,000 BTU. Older construction, basements, vaulted ceilings, and high window-to-wall ratios all push heat loss up faster than cooling load.
A single-stage furnace runs at full fire each cycle, so the right input matters for comfort and cycle length. Use a Manual J calculation to confirm that heat loss supports 78,000 BTU of output, and account for the elevation derate (4% per 1,000 ft above 2,000 ft) in higher-altitude installations.
Ideal for: Northern three-bedroom homes, houses with conditioned basements, older homes replacing a standard-efficiency 80K furnace, and higher-elevation properties.
Need more capacity? Step up to the EcoTemp 3 Ton 60K BTU Gas System (W5A5S36AKDWA) for more cooling capacity.
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 | W5A5S30AKAWA — 2.5 Ton Single-Stage R-454B Air Conditioner |
|---|---|
| Indoor Coil | W5AM30M17XA — 2.5 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 214966660) |
| 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 — 16.5 MCA, 25A Max Fuse/Breaker |
| Furnace Electrical | 115V, Single Phase, 60 Hz — 14 AWG Min., 15A Breaker |
| Manufacturer Warranty | 10-Year Parts with Timely Registration; 20-Year Furnace Heat Exchanger |
The WFSX080B048B furnace and the W5AM30M17XA coil share a 17-1/2 in. width and stack to roughly 60-13/16 in. The furnace's cooling airflow range (370–1,625 CFM) comfortably covers the 2.5 ton condenser. Because the furnace has a slide-out heat exchanger and blower assembly, service work doesn't require pulling the cabinet. Pick a non-programmable or programmable single-stage thermostat to finish the system.
Condenser, Coil & Furnace Features
W5A5S30AKAWA Condenser & W5AM30M17XA Coil
- 15.2 SEER2 certified when matched with this coil and furnace
- Single-stage scroll compressor with internal overload protection
- Forward-swept or propeller-type direct-drive fan, 1/10 HP
- Single-row coil with 25 fins per inch for efficient heat rejection
- Optional sound blanket, cycle protector, and winter start control accessories
- 208/230V single phase, operating range of 197–253 volts
- Multipoise W5AM coil for upflow, downflow, or horizontal installs
- Low-pressure-drop A-coil design that supports system airflow
- Coil burst-tested to at least 2,100 psi
- Complete A2L leak dissipation kit included for R-454B code compliance
WFSX080B048B 80K BTU Condensing Furnace
- 78,000 BTU output at 97.0% AFUE upflow and horizontal
- ENERGY STAR 5.0 North qualified in upflow and horizontal positions
- Standard 17-1/2 in. replacement width, 35 in. tall
- 1,290 CFM heating airflow from a 3/4 HP constant-torque ECM blower
- Flame roll-out sensors and a high-temperature limit control
- Direct vent, single-pipe, or ventilated combustion air venting
- Slide-out heat exchanger and blower assembly
- Through-the-casing flue option for counterflow or horizontal installs (accessory)
- Approved for twinning with the manufacturer's accessory kit
- 20-year heat exchanger and 10-year registered parts limited warranty
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
Why pick 80K over 60K with a 2.5 ton air conditioner?
Choose the 80K when your home's heat loss exceeds 58,000 BTU at your local winter design temperature. It delivers 78,000 BTU per hour from the same 17-1/2 in. cabinet width.
What wire size and breaker does the WFSX080B048B need?
The furnace runs on 115V single phase with a 13.4 unit ampacity. The specifications call for 14 AWG minimum wire and a 15 amp maximum fuse or breaker, with time-delay type recommended.
What safety controls are built into the furnace?
Flame roll-out sensors, a high-temperature limit control to prevent overheating, a redundant White-Rodgers gas valve, and direct ignition. There is no standing pilot.
What is the difference between direct vent and single-pipe venting?
Direct vent (2-pipe) brings combustion air in from outdoors through a dedicated pipe. Single-pipe uses indoor air for combustion and exhausts through one PVC pipe. The WFSX supports both, plus ventilated combustion air.
Is a concentric vent kit an option?
Yes. The WFSX is compatible with concentric vent termination, which runs both the intake and exhaust through a single roof or wall penetration. The kit is sold separately.
How easy is the furnace to service?
Quarter-turn knobs release the door, and the heat exchanger and blower assemblies slide out. The 3-digit display shows fault and status codes for faster diagnosis.
W5A5S Technical SpecificationsW5A5S Installation InstructionsW5A5S Customer BrochureW5AM Technical SpecificationsW5AM Installation InstructionsWFSX Technical SpecificationsWFSX Installation Instructions
ICP Warranty Certificate
