3.5 Ton - 80,000 BTU - 80% AFUE - Downflow AC & Furnace Systems
13 matched systems, cheapest first. A 3.5 Ton system usually suits a home of roughly 1,750 to 2,100 square feet, paired here with a 80,000 BTU 80% AFUE downflow furnace. This is a standard efficiency furnace that vents through a metal flue. Every system ships with the outdoor unit and the matching indoor side together.
4 of these are marked "Northern states only." Federal efficiency rules let lower-SEER2 air conditioners be installed only in the northern half of the country. If you live in the South or Southwest, pick one without the tag, or call (877) 843-4822 and we will point you to the right one.
Same size, different furnace:
80K BTU · 80% · Horizontal80K BTU · 80% · Upflow80K BTU · 92% · Horizontal80K BTU · 92% · Upflow80K BTU · 96% · Downflow80K BTU · 96% · Horizontal80K BTU · 96% · Upflow80K BTU · 97% · Downflow80K BTU · 97% · Horizontal100K BTU · 80% · Downflow100K BTU · 80% · Horizontal100K BTU · 80% · Upflow100K BTU · 92% · Horizontal100K BTU · 92% · Upflow100K BTU · 96% · Downflow100K BTU · 96% · Horizontal100K BTU · 96% · Upflow100K BTU · 97% · Downflow100K BTU · 97% · Horizontal120K BTU · 80% · Upflow120K BTU · 92% · Upflow120K BTU · 96% · Downflow120K BTU · 96% · Upflow120K BTU · 97% · Upflow
Goodman 3.5 Ton 13.4 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS3BN4210 / CAPTA4230C3 / GD9S800805CX13.4 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
Northern states only
$4,730.00
Goodman 3.5 Ton 13.4 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS3BN4210 / CAPTA4230C3 / GD9T800805CX13.4 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
Northern states only
$4,835.00
Goodman 3.5 Ton 13.6 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS3BN4210 / CAPTA6030C3 / GD9S800805CX13.6 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
Northern states only
$4,858.00
Goodman 3.5 Ton 13.6 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS3BN4210 / CAPTA6030C3 / GD9T800805CX13.6 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
Northern states only
$4,963.00
Goodman 3.5 Ton 14.5 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA4230C3 / GD9S800805CX14.5 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,024.00
Goodman 3.5 Ton 14.5 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA4230C3 / GD9T800805CX14.5 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,129.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA6030C3 / GD9S800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,152.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA6030C3 / GD9T800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,257.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS5BA4210 / CAPTA4230C3 / GD9T800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,648.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS5BA4210 / CAPTA6030C3 / GD9S800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$5,671.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS5BA4210 / CAPTA6030C3 / GD9T800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$6,073.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA4230C3 / GDVT800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$6,172.00
Goodman 3.5 Ton 15.2 SEER2 Air Conditioner + 80k BTU 80% AFUE Gas Furnace System – GLXS4BA4210 / CAPTA6030C3 / GDVT800805CX15.2 SEER2 · 80% AFUE · 80,000 BTU · Downflow · Single Stage
$6,307.00
Not sure what you have? Send us a photo of the data plate on your outdoor unit and furnace, or call our team in Winder, GA at (877) 843-4822. Free shipping on orders over $99, and financing is available at checkout through Affirm. Need help with size? Try the sizing tool.