Independent Review · Updated June 2026

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

Budget-friendly 3.5-ton combo with solid 14 SEER cooling and 80% AFUE heating.

7.6
IndustrialRank Score
Efficiency
7.8
Reliability
7.5
Value
8.2
Installation
8.0
Warranty
7.8
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 system suits budget-conscious homeowners and contractors in moderate climates who want a complete heating and cooling solution without premium pricing. The 14 SEER rating and two-stage furnace deliver reasonable efficiency for residential applications without breaking the bank.

Review

The Goodman 3.5-ton packaged system occupies a pragmatic middle ground in the residential HVAC market. At $2053, this combination furnace and air conditioner addresses customers seeking one integrated solution without premium features or premium pricing. Online Supply packages the upflow A-coil configuration for straightforward installation in standard attic or crawlspace applications. The unit carries Goodman's solid reputation for dependable performance across residential sectors.

Cooling performance delivers 42,000 BTU at 14 SEER, translating to reasonable summer efficiency for moderate climates. The heating side produces 80,000 BTU at 80% AFUE with two-stage burner modulation, meaning it adjusts flame intensity rather than cycling on and off constantly. The variable-speed blower motor maxes out at 2000 CFM and scales down intelligently, reducing runtime during mild weather. However, the single-stage scroll compressor lacks the part-load efficiency of inverter-driven models.

Pros & Cons

Pros

  • Strong value at $2053 for a complete packaged system with both furnace and AC unit
  • 14 SEER rating meets mid-tier efficiency standards, offering 20-30% better cooling efficiency than older 10 SEER units
  • Two-stage burner on furnace provides modulating heat output, improving comfort and reducing short cycling
  • Variable-speed blower motor adjusts airflow from 0 to 2000 CFM for better humidity and temperature control
  • 10-year warranty with online registration provides solid protection on components

Cons

  • 80% AFUE furnace efficiency lags behind 95%+ high-efficiency condensing models, costing more to heat over time
  • Single-stage air conditioner compressor is less efficient than variable-capacity units in mild weather
  • 73 dB noise level is noticeably loud during operation, comparable to a vacuum cleaner
  • Not ENERGY STAR certified, missing potential rebates available in many utility programs

Who Should Buy

Best For

This system fits homeowners in zones 4-6 who replace aging equipment and want fast installation without complex ductwork modifications. Contractors pricing competitive bids for budget-conscious customers will find this unit strikes a practical balance between upfront cost and operational efficiency.

Consider Alternatives If

Skip this if you live in cold climates where an 80% furnace creates excessive heating costs, or if noise sensitivity matters in bedroom installations.

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

Installation

Installation requires standard 120V, 1-phase, 60 Hz service with breaker sizing between 22 and 35 amps. The unit operates on natural gas or propane with a metal exhaust flue. Refrigerant compatibility spans R410A or R22, though R22 is phasing out. Physical dimensions of 30 inches by 21 inches by 21 inches fit most standard equipment pads. Professional installation is strongly recommended for proper gas line venting and refrigerant charging.

Warranty & Reliability

Goodman extends a 10-year parts and compressor warranty with online registration at no additional cost. This covers refrigerant leaks, compressor failure, and furnace heat exchanger defects. The evaporator coil carries separate coverage under Goodman's standard terms. Registration takes minutes online after purchase and protects your investment through the first decade of operation.

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

How does 14 SEER compare to newer efficiency ratings? +
14 SEER was standard until 2023, when SEER2 replaced it using updated test conditions. A 14 SEER unit typically equals 11-12 SEER2, so this system sits solidly mid-tier. For hot climates, higher-efficiency models reach 16-18 SEER2, but this delivers reliable cooling at fair cost.
Can I install this upflow system in my basement? +
Yes, the upflow/horizontal configuration suits basements and crawlspaces. Ensure 30-inch clearance above the unit for filter changes and maintenance access. You'll need proper gas venting to the exterior and condensate drain to a safe location, typically the floor drain or pump.
Will the 80% AFUE furnace significantly increase heating bills? +
In moderate climates, 80% AFUE performs acceptably. However, in cold regions, efficiency losses of 20% compared to 95%+ condensing models mean 15-25% higher annual heating costs. Calculate payback if upgrading to higher efficiency based on your local gas rates and heating degree days.
How does this system compare to Lennox or Carrier packaged units? +
Goodman prioritizes value over premium features, typically pricing 15-30% lower than Lennox or Carrier equivalents. Performance is comparable for residential applications, though brand support networks differ. Lennox often offers better warranties, while Goodman emphasizes straightforward, reliable operation.
Does the 10-year warranty cover labor? +
No, Goodman's 10-year warranty covers parts and compressor only. Labor, service calls, and refrigerant are customer expenses. Purchase extended labor coverage from your installer if you want full protection on service calls.

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