Independent Review · Updated June 2026

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

Solid 14 SEER cooling with 80% furnace efficiency at an accessible price point

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$2053
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for homeowners in moderate climates seeking balanced heating and cooling without premium efficiency costs. The 14 SEER rating handles summer cooling capably, while the 80% AFUE furnace covers winter heating adequately for most regions outside extreme cold zones.

Review

The Goodman 3.5-ton system at $2,053 occupies the middle ground between budget builders and premium contractors. It pairs a proven gas furnace with a scroll-compressor air conditioner, combining 80,000 BTU heating output with 42,000 BTU cooling capacity. Online Supply positions this as a no-frills replacement option for homeowners and contractors tired of mid-tier equipment pricing, while still delivering respectable seasonal efficiency ratings that beat budget-tier alternatives.

The 14 SEER cooling efficiency and 80% AFUE furnace efficiency represent honest mid-market performance. The variable-speed blower motor on the furnace side distinguishes this from truly budget units, allowing lower-speed operation during partial-load conditions for better comfort. The scroll compressor handles 42,000 BTU cooling through single-stage operation, meaning it cycles on and off rather than modulating, which is typical at this price but less refined than two-stage alternatives.

Pros & Cons

Pros

  • 14 SEER rating delivers solid cooling efficiency for a sub-$2100 system, reducing summer energy bills noticeably
  • Dual-stage burner with variable-speed blower motor allows the furnace to modulate output, improving comfort and reducing short-cycling
  • 42,000 cooling BTU and 80,000 heating BTU provide honest capacity for 3.5-ton applications without oversizing
  • Scroll compressor is proven Goodman architecture known for reliability across thousands of installations
  • 10-year warranty with online registration covers parts and labor concerns for the critical decade

Cons

  • 80% AFUE is dated by today's standards, qualifying only as baseline efficiency rather than high-efficiency, costing more in winter utility bills
  • Single-stage cooling compressor cannot modulate capacity, leading to on-off cycling instead of continuous variable cooling
  • 73 dB noise level runs louder than premium units, which matters for bedroom windows or patios near the condenser
  • Not Energy Star certified despite decent SEER rating, suggesting it missed efficiency thresholds by a margin

Who Should Buy

Best For

Contractors and homeowners replacing aging 10-year-old systems who prioritize upfront affordability and don't want to jump to high-efficiency equipment. This unit fits renovation projects in moderate climates where energy costs aren't prohibitive and simplicity matters.

Consider Alternatives If

Anyone in cold climates needing heating reliability should explore 90+ AFUE units, and energy-conscious buyers should target 16+ SEER systems to recover the upfront premium within 5-7 years.

3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Fu
$2053
Buy at HVACDirect →

Installation

Installation follows standard industry practice. The upflow A-coil configuration fits horizontal or vertical furnace cabinets, and the 30-inch dimensions accommodate most utility closets and basements. Suction and liquid line sizes match standard 3/8-inch and 7/8-inch copper tubing. Metal exhaust flue requirement means no plastic venting allowed. Most HVAC contractors complete installation in one to two days on straightforward replacements.

Warranty & Reliability

The 10-year warranty with online registration covers parts and evaporator coil failures, standard practice for Goodman equipment. Online registration is quick and extends protection beyond basic coverage. This warranty protects against manufacturing defects but doesn't cover improper installation or refrigerant recharges after initial commissioning.

Specifications

SKULS38783830
Brand/ManufacturerOnline Supply
Cooling BTU42,000
Heating BTU80,000
RefrigerantR410A or R22
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)30.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size35 amps
Min. Breaker Size22 amps
Tonnage5 Ton
Height30"
Width21"
Depth21"
ResourcesCAPF Installation Manual CAPF 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.
AHRI Certificate Number204633302
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

Why does this system have different tonnage ratings for cooling versus heating? +
The listing shows 3.5-ton cooling (42,000 BTU) but lists 5-ton in one specification field. The accurate specs are 42,000 cooling BTU (3.5-ton) and 80,000 heating BTU. Verify the exact tonnage with Online Supply before ordering, as discrepancies in legacy product sheets create confusion.
Can this furnace run on propane or natural gas? +
Yes, the burner accommodates both propane and natural gas with field conversion kits available from Goodman. Confirm your fuel type during installation, as the burner orifice must match your supply. Natural gas is more common and requires no modifications.
Is 14 SEER competitive with current air conditioner ratings? +
14 SEER is respectable but dated. Modern mid-range units start at 16 SEER, and premium systems reach 24+ SEER. The 14 rating performs adequately in moderate climates but costs more annually than newer equipment, though upfront savings may offset that difference for budget-conscious buyers.
How does this compare to high-efficiency units from Carrier or Lennox? +
Goodman prioritizes affordability over premium features. Carrier or Lennox equivalents typically offer better noise control, higher SEER ratings (16-20), and more refined staging but cost $3,500 to $4,500 for comparable tonnage. This unit sacrifices efficiency refinement for immediate savings.
What does the 10-year warranty actually cover? +
Parts and compressor failures are covered for ten years with online registration. Labor coverage depends on your retailer's extended service plans. The warranty excludes refrigerant top-ups, filters, and maintenance items. Proof of registration is required for claims.

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