Independent Review · Updated June 2026

2.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Solid mid-tier gas furnace and AC combo with dependable 80% AFUE and 14 SEER cooling.

7.8
IndustrialRank Score
Efficiency
7.9
Reliability
7.9
Value
8.1
Installation
8.2
Warranty
7.5
2.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This is a practical choice for homeowners replacing aging equipment in moderate climates where upflow installation works. The 80% AFUE heating and 14 SEER cooling deliver respectable efficiency without premium pricing, though it won't match high-end systems.

Review

The Goodman 2.5 ton upflow system sits squarely in the mid-market segment where affordability meets baseline efficiency. Manufactured by Goodman under Online Supply's distribution, this matched pair delivers 80,000 BTU heating and 30,000 BTU cooling through conventional two-stage gas combustion and single-stage refrigerant compression. Upflow design makes it ideal for basement and crawlspace installations where headroom matters. It's a workhorse unit popular among regional HVAC contractors who prioritize straightforward installation over cutting-edge features.

Efficiency lands at 80% AFUE for heating and 14 SEER for cooling, both solid baseline numbers that meet current code minimums without premium cost. The two-stage burner cycles between high and low fire, reducing short cycling and temperature overshoots compared to single-stage rivals. The high-efficiency multi-speed blower motor with 2,000 CFM maximum capacity adapts to varying loads, cutting unnecessary fan hours. Refrigerant system uses R410A with standard 3/8 inch liquid and 3/4 inch suction lines, keeping field service straightforward and spare parts readily available.

Pros & Cons

Pros

  • Two-stage burner provides better comfort than single-stage units with less temperature swing
  • 14 SEER rating meets current minimum efficiency standards across most U.S. markets
  • High-efficiency multi-speed blower motor reduces runtime and electricity consumption
  • Compact 21 by 21 by 30 inch footprint fits tight basement or closet installations
  • Two-valve refrigerant system (3/8 inch liquid, 3/4 inch suction) supports straightforward field service

Cons

  • 80% AFUE is baseline efficiency, not high-efficiency like 90+ AFUE models available at similar price points
  • Single-stage compressor lacks variable capacity for part-load efficiency gains
  • 72 dBA noise level runs louder than inverter-driven competitors, noticeable during operation
  • No ENERGY STAR certification signals lower environmental performance tier
  • Tonnage discrepancy (2.5 ton header with 3.5 ton listed specs) creates confusion on actual capacity

Who Should Buy

Best For

Homeowners in the Southeast and Midwest seeking affordable heating and cooling replacement for 1,500 to 2,000 square foot homes with existing upflow ductwork. Contractors building budget-conscious residential packages will appreciate the standard design and quick installation timeline.

Consider Alternatives If

Anyone in heating-dominant climates should look at 90+ AFUE furnaces, and efficiency-conscious buyers should consider variable-capacity compressor models like Carrier 25HNH or Lennox XC21.

2.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Fu
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Installation

Upflow configuration suits basements, crawlspaces, and utility closets with standard 7-foot clearance. The 21 by 21 by 30 inch footprint requires minimal space but demands proper return air ducting. Requires 120V single-phase 60 Hz power with 17.1 to 25 amp breaker capacity, typical for most residential panels. Metal exhaust flue and 50-foot maximum suction line insulation (3/4 inch thickness) are standard field requirements. Installation typically runs 6 to 8 hours for experienced crews.

Warranty & Reliability

Goodman backs this unit with a 10-year limited warranty requiring online registration within 60 days of purchase. Coverage includes compressor, refrigerant charge, and sealed components but excludes wear items and labor. Online Supply's registration process is straightforward and critical for claim validity. Standard coverage is solid for mid-tier equipment, though premium brands sometimes offer 12 years.

Specifications

SKULS38343850
Brand/ManufacturerOnline Supply
Cooling BTU30,000
Heating BTU80,000
RefrigerantR410A
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)22.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeRotary
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size25 amps
Min. Breaker Size17.1 amps
Tonnage3.5 Ton
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorHigh Efficiency Multi-Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypeGas
Liquid Line3/8"
Suction Line3/4"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Is this really a 2.5 ton system if specs list 3.5 ton tonnage? +
The cooling capacity is genuinely 30,000 BTU, which calculates to 2.5 tons. The 3.5 ton specification likely refers to a closely related model variant. Contact Online Supply before purchase to confirm your exact cooling capacity matches your home's load calculation.
Can I install this horizontally if my space is tight? +
Yes, this unit supports both upflow and downflow configuration as stated in specs. Horizontal installation requires a return air platform and slightly different flue routing but is achievable. Consult the CAPT Installation Manual included in the resource pack before attempting non-standard orientation.
How much energy will I save compared to an older 70% AFUE furnace? +
An 80% AFUE unit wastes 10% less fuel than 70% AFUE equipment, translating to roughly 12 to 15 percent annual heating cost savings depending on natural gas prices in your area. The 14 SEER cooling saves 20 to 30 percent versus 10 SEER legacy units.
How does 14 SEER stack up against modern competitors? +
14 SEER meets current minimum requirements but trails newer 16 to 18 SEER units from Lennox and Carrier. For the price, it's competitive, though high-efficiency variants offer better part-load performance in shoulder seasons when efficiency truly matters.
Will I need a permit and inspection for installation? +
Yes, HVAC installation requires local permits and final inspection in all U.S. jurisdictions. Hire a licensed contractor familiar with your area's gas furnace codes, especially regarding flue venting and electrical sizing.

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