Independent Review · Updated June 2026

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

Energy Star 96% AFUE furnace paired with 16 SEER1 cooling in one compact unit

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$0
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This 5-ton combo system delivers solid efficiency for contractors seeking a plug-and-play heating and cooling solution in tight spaces. The 96% AFUE furnace and 16 SEER1 condenser make it ideal for retrofits where horizontal mounting is required, particularly in basements or attics with limited headroom.

Review

The Goodman GMVC961205DN combines a gas furnace and air conditioner into one horizontal unit, solving a real problem for contractors working in confined spaces. This 5-ton system delivers 120,000 BTU heating and 60,000 BTU cooling from a footprint measuring 34.5 inches tall by 24.5 inches wide by 28.75 inches deep. Goodman positions this as an efficient, cost-effective solution for residential retrofits where space constraints make traditional vertical mounting impractical. It carries Energy Star certification, which matters for homeowners pursuing rebates or energy credits.

Performance specs reveal this unit punches above its marketing numbers. The published 15 SEER rating understates actual efficiency, as the condenser achieves 16 SEER1 on the newer testing standard. The furnace reaches 96% AFUE, meaning only 4% of gas energy is wasted up the flue. Two-stage operation on both heating and cooling reduces short-cycling and extends runtime efficiency. The scroll compressor and variable-speed ECM blower modulate output to match real demand, not just cycle on and off like single-stage systems.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency recovers heat that competitors waste, cutting gas consumption measurably
  • 16 SEER1 cooling rating significantly outperforms the 15 SEER marketing claim, delivering real savings on electricity
  • Two-stage burner and two-stage compressor modulate output, reducing runtime and extending component life
  • Variable-speed ECM blower motor adjusts airflow from 0 to 2000 CFM, eliminating unnecessary energy use
  • Lifetime heat exchanger warranty provides long-term protection against the most expensive failure point

Cons

  • Requires licensed HVAC technician for installation, no DIY option, and propane/natural gas safety risks are substantial
  • 75 dB noise level runs louder than some premium competitors, notable in quiet residential settings
  • Horizontal A-coil configuration limits placement flexibility compared to vertical coil designs

Who Should Buy

Best For

Contractors upgrading older systems in tight spaces, especially basements or attics where horizontal mounting is necessary. Homeowners in moderate climates seeking reliable heating and cooling without premium pricing.

Consider Alternatives If

Anyone uncomfortable with gas appliance installation complexity, renters without landlord approval, or those in extremely hot climates needing single-stage cooling efficiency.

5 Ton 15 SEER 96% AFUE 120,000 BTU Goodman Gas Fur
$0
Buy at HVACDirect →

Installation

Installation demands a trained, licensed technician due to gas safety protocols. The unit requires 115V single-phase 60 Hz power with breaker sizing between 37.2 and 60 amps depending on local code. Sweat-type refrigerant connections use 3/8 inch liquid lines and 7/8 inch suction lines. Flue venting requires plastic or PVC exhaust pipe rated for condensing furnace discharge. Horizontal mounting flexibility makes it valuable for basements or attics, but ductwork adaptation may be necessary.

Warranty & Reliability

Coverage includes a lifetime warranty on the heat exchanger, protecting against the costliest failure point, plus 10 years of parts coverage when registered online. This dual approach incentivizes proper registration and provides meaningful protection during the system's productive life. Lifetime heat exchanger coverage is generous for a mid-tier unit, though parts warranties lag behind premium competitors offering 15-year coverage.

Specifications

SKUGMVC961205DN
Brand/ManufacturerGoodman
Cooling BTU60,000
Heating BTU120,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
WarrantyLifetime Heat Exchanger and 10 Years Parts with Online Registration
Decibel Level (dBA)75
Weight (in lbs)156.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size60 amps
Min. Breaker Size37.2 amps
Tonnage5 Ton
Valve TypeSweat
Height34.5"
Width24.5"
Depth28.75"
ResourcesGoodman Brochure Goodman Install Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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
AHRI Certificate Number7368842
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000

Frequently Asked Questions

How does the 16 SEER1 rating differ from the advertised 15 SEER? +
SEER1 uses updated testing standards reflecting real-world conditions more accurately than legacy SEER ratings. This unit's 16 SEER1 represents approximately 6.7% better cooling efficiency than a true 15 SEER system, translating to meaningful electricity savings over 15-20 years of operation, especially in hot climates with extended cooling seasons.
Can I install this myself or do I absolutely need a professional? +
Professional installation is non-negotiable. Gas line connections, flue venting, refrigerant charge, and safety interlocks require licensed technician expertise. Improper installation risks carbon monoxide exposure, gas leaks, or equipment damage. Most jurisdictions legally require licensed installation. Attempting DIY work voids warranty and creates liability.
What temperature rise should I expect from the 120,000 BTU furnace? +
Temperature rise depends on airflow. At maximum CFM of 2000, expect approximately 35-40 degree Fahrenheit rise across the coil. The variable-speed ECM blower adjusts to maintain proper rise, protecting the heat exchanger from overheating while optimizing comfort and efficiency across all load conditions.
How does this horizontal unit compare to vertical configurations? +
Horizontal units sacrifice some installation flexibility but excel in space-constrained locations. This model's compact 34.5-inch height fits attics and crawlspaces where vertical coils cannot. Performance and efficiency are comparable, but horizontal units typically cost more due to specialized manufacturing and require careful ductwork routing.
Is the lifetime heat exchanger warranty actually valuable? +
Yes. Heat exchanger replacement typically costs 800 to 1500 dollars in labor and parts. Lifetime coverage eliminates this risk, though it only applies if the furnace was installed and maintained correctly. Register your system online immediately after installation to activate this benefit.

Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.