Independent Review · Updated June 2026

3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

High-efficiency dual-stage system with outstanding SEER2 performance and strong warranty protection

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$89
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Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system excels for homeowners upgrading to high-efficiency cooling and heating in moderate climates, particularly those prioritizing Energy Star performance and long-term durability. The lifetime heat exchanger warranty and two-stage operation make it a solid choice for homes needing reliable comfort without premium pricing.

Review

The Goodman GMEC961004CN represents a mainstream choice for homeowners upgrading their HVAC systems with a focus on efficiency and value. This horizontal-configuration 3.5-ton system combines a high-SEER air conditioner with a powerful gas furnace, both featuring dual-stage operation. At $89 for the equipment alone, it sits in the accessible-to-moderate price range, though total installation costs will be substantially higher. Goodman's reputation for straightforward engineering and solid performance makes this system popular with contractors seeking reliable equipment without boutique pricing.

Performance specs tell a compelling story. The 18 SEER2 rating on the cooling side significantly outperforms baseline 13-SEER units, translating to measurable summer energy savings in moderate climates. The furnace delivers 100,000 BTU output at 96% AFUE efficiency, meaning nearly every dollar of gas becomes usable heat rather than lost exhaust. The two-stage burner and scroll compressor allow the system to operate at reduced capacity during mild weather, reducing cycling losses and extending equipment lifespan. Maximum airflow reaches 1,600 CFM with the multi-speed ECM blower, enabling consistent distribution across typical residential ductwork.

Pros & Cons

Pros

  • 18 SEER2 cooling efficiency exceeds Energy Star requirements and reduces summer utility bills significantly
  • 96% AFUE furnace delivers exceptional winter heating efficiency with two-stage burner for modulating output
  • Two-stage scroll compressor and multi-speed ECM blower motor enable quiet operation at 71 dB and precise temperature control
  • Lifetime heat exchanger warranty plus 10-year parts and unit replacement coverage provides strong long-term protection
  • 3.5-ton capacity covers most residential applications with 100,000 BTU heating and 35,000 BTU cooling output

Cons

  • Requires licensed HVAC technician for installation, adding $1,500-$3,000 to total system cost
  • 115V single-phase electrical requirement limits placement options in some older homes with limited circuits
  • 71 dB noise level runs slightly higher than premium single-stage competitors, noticeable during peak cooling

Who Should Buy

Best For

Homeowners in temperate climates seeking a balanced upgrade combining high cooling efficiency with premium heating performance at mid-range pricing. Ideal for those with homes 1,500-2,500 square feet who value Energy Star certification and want reliable operation for 15-20 years without ongoing repairs.

Consider Alternatives If

Homes requiring ultra-quiet operation or those in very cold climates where single-stage furnaces perform adequately, as well as budget-conscious buyers unwilling to invest in professional installation.

3 Ton 17 SEER 96% AFUE 100,000 BTU Goodman Gas Fur
$89
Buy at HVACDirect →

Installation

This system demands professional installation by a licensed HVAC technician. Gas line connections, flue venting setup with PVC/plastic exhaust, electrical work requiring 21.9 to 35-amp breaker sizing, and refrigerant charging cannot be DIY projects. Improper installation creates serious safety and performance risks. The horizontal configuration works well in basements or utility closets with limited vertical space. Expect installation labor to range from $1,500-$3,000 depending on local rates and existing ductwork conditions.

Warranty & Reliability

Goodman backs this system with a lifetime warranty on the heat exchanger, protecting against corrosion failures indefinitely. Parts and unit replacement coverage extends 10 years with online registration, meaning defective components get replaced at no cost for a decade. This is stronger than many competitors offering 5-year coverage, providing meaningful peace of mind. Activation requires registration within 30 days of installation. Read terms carefully, as coverage excludes damage from improper service or neglected maintenance.

Specifications

SKUGMEC961004CN
Brand/ManufacturerGoodman
Cooling BTU35,000
Heating BTU100,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
WarrantyLifetime Heat Exchanger, 10 Years Unit Replacement, and 10 Years Parts with Online Registration
Decibel Level (dBA)71
Weight (in lbs)140.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size35 amps
Min. Breaker Size21.9 amps
Tonnage3.5 Ton
Valve TypeSweat
Height34.5"
Width21"
Depth28.75"
ResourcesGMEC96 Installation Manual GMEC96 Specifications Sheet GMEC96 Owner's Manual GMEC96 Service Manual GMEC96 Replacement Parts Manual GMEC96 Brochure Goodman Furnace Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationThis gas appliance requires a trained technician to install. Improperly connecting gas lines or improperly connecting a gas flue or venting may result in death. By purchasing this item, you are agreeing that you are using a trained technician to install this gas appliance. We will not be responsible for any injury or property damage arising from improper service or service procedures. Whoever installs or services this unit assumes responsibility for any personal injury or property damage which may result. Many jurisdictions require a license to install this equipment. PROPOSITION 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.
ConfigurationUpflow/Horizontal
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorMulti-Speed - ECM
Maximum CFM1600
Flue LocationRight
Burner StagesTwo

Frequently Asked Questions

How much will my cooling costs drop with this 18 SEER2 unit compared to a 13 SEER system? +
Expect approximately 20-30% lower cooling costs depending on your climate and usage patterns. In moderate climates, homeowners typically save $150-$300 annually on air conditioning. SEER2 uses more realistic testing conditions than legacy SEER ratings, so direct comparison to older systems shows real-world improvement.
Can this furnace run on propane instead of natural gas? +
The GMEC96 series is designed exclusively for natural gas. Conversion kits exist for some Goodman furnaces, but this specific model would require significant modification by a licensed technician. For propane, you need equipment certified for that fuel source. Contact Goodman technical support to verify conversion feasibility.
Is the 3.5-ton capacity right for my 2,000 square foot home? +
Tonnage selection depends on climate zone, insulation quality, and ductwork efficiency rather than square footage alone. A Manual J load calculation performed by your installer determines the correct size. Generally, 3.5 tons handles well-insulated homes up to 2,500 square feet in moderate climates without oversizing issues.
How does this Goodman system compare to Carrier or Lennox mid-range models? +
Goodman delivers superior SEER2 and AFUE ratings at lower pricing than Carrier's equivalent tiers. Lennox offers slightly quieter operation but costs $500-$1,000 more for similar efficiency. Goodman prioritizes value and performance over brand premium, making it excellent for budget-conscious homeowners.
What happens if something fails after year 5 with my parts warranty? +
Beyond the 10-year parts warranty period, you pay full replacement cost for defective components. Plan for potential repair costs starting year 11. Most systems remain reliable 15-20 years with annual maintenance, so unexpected failures become less likely after warranty expires.

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