Independent Review · Updated June 2026

5 Ton 14 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

High-efficiency combo system with modulating gas furnace and variable-speed cooling.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 14 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$0
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// Bottom Line
This 5-ton Goodman system excels for homeowners upgrading older equipment and needing both heating and cooling in one package. The 97% AFUE furnace and 14 SEER air conditioner deliver measurable savings on utility bills, especially in climates with significant heating demands.

Review

The Goodman 5-ton downflow system pairs a high-efficiency gas furnace with a standard air conditioning condenser. At $0, this is positioned as a contractor-grade combo unit for residential applications up to 2,000 square feet. The downflow configuration suits homes where equipment sits above living spaces, ducting downward through floors. With both Goodman furnace heritage and ACiQ condenser integration, this system targets cost-conscious homeowners upgrading from 10+ year old equipment.

The furnace delivers exceptional heating efficiency at 97% AFUE, consuming only 3% of fuel energy as waste through the plastic vent. The air conditioner rates 14 SEER with R454B refrigerant, providing solid cooling efficiency without premium variable-capacity technology. Heating output reaches 100,000 BTU with modulating burner stages that ramp up and down rather than cycling fully on and off, reducing temperature swings. Cooling capacity is 60,000 BTU across 5 tons. The variable-speed ECM blower motor runs at 2,000 CFM maximum, adapting to actual load demands.

Pros & Cons

Pros

  • 97% AFUE furnace converts nearly all fuel to usable heat, among the highest efficiency available for gas furnaces
  • 14 SEER cooling efficiency meets ENERGY STAR standards with R454B refrigerant for environmental responsibility
  • Modulating burner stages adjust heat output precisely, reducing temperature swings and improving comfort
  • Variable-speed ECM blower motor runs quietly and adapts airflow to actual heating and cooling needs
  • 10-year warranty with online registration covers both furnace and air conditioning components
  • Downflow configuration works in tight spaces like attics or closets with horizontal ducting runs

Cons

  • Single-stage air conditioner cannot modulate cooling capacity, only cycles on and off like older systems
  • 75 dB noise level during cooling operation is moderately loud, noticeable from adjacent rooms
  • Requires 32.8 to 50-amp breaker installation, necessitating potential electrical panel upgrades in older homes

Who Should Buy

Best For

Homeowners replacing equipment in homes with 2,000+ square feet needing both reliable heat and reasonable cooling efficiency. Ideal for regions with cold winters where the 97% AFUE furnace delivers the most value through reduced heating costs.

Consider Alternatives If

Buyers seeking variable-capacity cooling should look for two-stage or inverter-drive air conditioners, as this unit cycles on and off without capacity modulation.

5 Ton 14 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
$0
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Installation

Downflow installation requires vertical ductwork runs below the equipment. The unit measures 30 inches tall by 21 inches wide and deep, fitting standard utility closets. Electrical installation demands a 32.8 to 50-amp breaker on 115V single-phase 60Hz power. Refrigerant lines use 3/8-inch liquid and 7/8-inch suction connections with 30 feet of insulated line included. PVC exhaust venting accommodates furnace condensation drainage safely.

Warranty & Reliability

ACiQ backs this system with a 10-year parts warranty requiring online registration. Coverage includes the furnace heat exchanger, compressor, and condenser coil defects. Labor and refrigerant recharges are typically excluded. This warranty period is standard for mid-tier HVAC equipment and protects against manufacturing failures during the critical first decade of operation.

Specifications

SKUACIQ-60-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU60,000
Heating BTU100,000
RefrigerantR454B
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)120.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)14
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size32.8 amps
Tonnage5 Ton
Height30"
Width21"
Depth21"
ResourcesCAPT Installation Manual CAPT 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 Number7424272
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesModulating
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

How much money will I save monthly compared to a 1990s furnace? +
A typical 1990s furnace operated at 78-80% AFUE. This unit's 97% AFUE means roughly 17-19% less fuel consumption. On average, expect $15-40 monthly savings depending on natural gas prices and heating hours in your climate. Over 10 years, cumulative savings often exceed $2,000-5,000.
Does the downflow configuration work in my attic installation? +
Yes. Downflow units discharge air downward, requiring vertical ductwork drops through floors or walls. Your attic installation works only if supply ducts run down to first-floor returns and heating zones. Ensure adequate clearance below the unit for return air intake and service access.
Is 14 SEER cooling efficiency adequate for summer comfort? +
14 SEER handles standard summer loads efficiently across most climates. However, it cannot modulate cooling capacity like 16+ SEER two-stage systems. In extreme heat waves lasting days, expect occasional temperature drift of 2-3 degrees as the compressor cycles on and off.
How does this compare to an all-electric heat pump system? +
This gas furnace excels in cold climates where backup heat is essential. Heat pumps cost less to cool but struggle below 25-30 degrees Fahrenheit. Choose the furnace if you heat 4+ months annually, choose heat pump if cooling dominates or natural gas is unavailable.
Will I need a new breaker panel upgrade? +
Most homes have available 50-amp circuits. Confirm your panel has open slots and sufficient total amperage. Older 100-amp panels may require upgrade, costing $1,000-2,500. Have a licensed electrician verify compatibility before purchase.

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