Independent Review · Updated June 2026

3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Budget-friendly 3-ton combo system with solid 14 SEER cooling and 80% AFUE heating

7.8
IndustrialRank Score
Efficiency
7.9
Reliability
7.6
Value
8.3
Installation
8.1
Warranty
7.9
3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$647
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for budget-conscious homeowners in moderate climates who want a complete heating and cooling solution without premium pricing. At $647, you're getting solid mid-range efficiency with proven reliability, though you'll sacrifice some performance compared to higher-tier systems.

Review

Goodman's 3-ton combo system represents a practical middle ground in the entry-level HVAC market. This upflow configuration ships as a complete unit combining a gas furnace and air conditioner, simplifying the installation process for contractors. At $647, it undercuts premium brands while maintaining decent efficiency ratings. The system handles both heating with a 100,000 BTU furnace and cooling with 36,000 BTU capacity, making it suitable for average-sized homes in moderate climates.

The 14 SEER cooling efficiency meets minimum federal standards but trails newer systems achieving 16-18 SEER. The 80% AFUE furnace rating means 20% of heating energy becomes flue loss, a significant drawback compared to 90-95% AFUE condensing models. However, the two-stage burner provides operational flexibility, and the multi-speed blower motor optimizes comfort at 2000 CFM maximum output. The single-stage scroll compressor uses R410A or R22 refrigerant, with modest 73 dB noise levels during cooling operation.

Pros & Cons

Pros

  • Excellent value at $647 for a complete 3-ton combo system with 14 SEER rating
  • Two-stage burner provides better heating control and efficiency than single-stage alternatives
  • High-efficiency multi-speed blower motor with 2000 CFM maximum airflow for better comfort
  • Compact 21x30x21 inch footprint fits standard closets and utility spaces
  • 10-year warranty with online registration covers parts and labor in most cases

Cons

  • 80% AFUE is dated by modern standards, costing $200-400 more annually than 95% AFUE systems
  • 73 dB noise level runs louder than higher-efficiency units, noticeable during operation
  • Single-stage compressor cycles on-off rather than varying capacity, reducing part-load efficiency

Who Should Buy

Best For

This system suits homeowners replacing older equipment who prioritize upfront cost savings over long-term energy bills, and contractors serving price-sensitive customers in areas without harsh winters. It's ideal for existing homes with adequate ductwork that don't require premium performance.

Consider Alternatives If

Skip this if you live in a cold climate requiring frequent heating, want Energy Star certification, or plan to stay in your home 15+ years where higher efficiency would pay for itself.

3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
$647
Buy at HVACDirect →

Installation

Installation requires standard mechanical skills and HVAC knowledge. The system needs a metal exhaust flue, 120V single-phase 60Hz power, and 18.7-30 amp circuit breaker. Liquid and suction lines measure 3/8 inch and 3/4 inch respectively, with matching valve sizes. The 3/4 inch suction line insulation extends 30 feet, providing adequate coverage for most installations. Upflow configuration suits attic or closet placement in single-story homes.

Warranty & Reliability

Goodman backs this unit with a 10-year parts and labor warranty after online registration. This standard coverage protects against manufacturing defects and compressor failure, though coverage varies by retailer and installation method. Always register immediately upon purchase to activate the full term. Extended warranties typically cost $150-300 and add minimal value given the standard coverage length.

Specifications

SKULS38343830
Brand/ManufacturerOnline Supply
Cooling BTU36,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)35.000000
FeatureSpec
Energy StarNo
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Line3/8"
Suction Line3/4"
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size30 Amps
Min. Breaker Size18.7 Amps
Tonnage3.5 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.
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorHigh Efficiency Multi-Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypeGas
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length30 feet

Frequently Asked Questions

How does 14 SEER compare to newer air conditioners? +
14 SEER meets minimum federal efficiency, but newer systems achieve 16-18 SEER. A 16 SEER unit reduces cooling costs by approximately 12-15% annually. Over 15 years, higher efficiency pays dividends, though this system remains competent for moderate climates where cooling seasons are shorter.
Is 80% AFUE acceptable for gas heating? +
80% AFUE is outdated. Modern 95% AFUE condensing furnaces recover more heat from exhaust. In cold climates, the efficiency difference costs $250-400 yearly in wasted energy. This system suits mild-winter areas where heating isn't the dominant load.
Will this system handle a 3,000 square foot home? +
The 3-ton capacity (36,000 BTU cooling) fits homes around 2,800-3,200 square feet in moderate climates. For southern regions needing extra cooling, consider a 3.5-ton unit. For cold northern climates, ensure the 100,000 BTU furnace meets heating load calculations.
How does this compare to higher-priced Goodman models? +
Premium Goodman units ($1,200-1,800) add variable-capacity compressors, 16 SEER efficiency, and quieter operation. This entry model sacrifices performance for price. Buy premium if staying 15+ years, otherwise budget models recover costs slower.
Does registration really matter for the 10-year warranty? +
Yes. Without registration, warranty often defaults to five years. Registration takes five minutes online and protects your investment. Keep proof of installation and purchase receipts to ensure coverage validity.

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