4 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow Review 2026

// Bottom Line

This Goodman combo system delivers solid heating and cooling efficiency for homeowners in mixed climates who want a reliable, straightforward package deal. The 96% AFUE furnace and 13 SEER condenser work together well, though neither component tops its category individually.

Review

This ACiQ-badged Goodman system bundles a furnace and air conditioner into one 4-ton cooling, 5-ton heating package designed for downflow installations. It's positioned as a practical mid-range option for homeowners and contractors who want proven Goodman reliability without enterprise-level efficiency premiums. The system replaces three older Goodman models, making it an easy upgrade path for existing customers.

The furnace delivers 80,000 BTU heating output at 96% AFUE, meaning 96 cents of every heating dollar converts to actual warmth. The 4-ton air conditioner produces 48,000 BTU cooling capacity with 13 SEER1 efficiency and operates on R454B refrigerant. A variable-speed ECM blower motor maxes out at 1,600 CFM and modulates capacity, keeping noise to 76 dBA while improving comfort consistency compared to fixed-speed alternatives.

Pros & Cons

Pros

96% AFUE furnace converts nearly all natural gas or propane to usable heat, cutting fuel waste
13 SEER condenser qualifies for Energy Star and captures current DOE efficiency standards
Variable-speed ECM blower motor adapts to demand, improving comfort and reducing runtime noise to 76 dBA
Two-stage burner operation allows modulated heating for better temperature control and efficiency
10-year warranty with online registration provides reasonable coverage for both heating and cooling components

Cons

13 SEER1 rating is mid-tier, not cutting-edge, so higher-efficiency 14-16 SEER units exist for premium applications
Single-stage compressor runs at full capacity whenever cooling demand appears, less efficient than variable-capacity designs
Reciprocating compressor generates more noise and vibration than newer scroll or rotary alternatives

Who Should Buy

Best For

Homeowners in areas requiring both strong heating and cooling, particularly those replacing aging Goodman GSX130483-485 units who want a matched system without premium pricing. Contractors installing straightforward residential combos in moderate climates will appreciate the streamlined compatibility.

Consider Alternatives If

High-efficiency seekers in hot climates should compare 14+ SEER alternatives; those needing whisper-quiet operation may prefer scroll compressors despite higher cost.

4 Ton 13 SEER 96% AFUE 80,000 BTU Goodman Gas Furn

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Installation

This downflow/horizontal configuration fits tight spaces, and the compact 30-inch by 21-inch by 21-inch footprint helps. Installation requires 115V single-phase 60Hz power with a minimum 26.3-amp and maximum 45-amp breaker. Suction line uses 1 1/8-inch diameter with 1/2-inch insulation; liquid line runs 3/8-inch. PVC exhaust flue compatibility simplifies venting. Variable-speed motor wiring is straightforward for certified HVAC techs.

Warranty & Reliability

Goodman backs this system with a 10-year warranty covering both furnace and condenser after online registration. This is standard industry practice for residential equipment and protects against compressor failure, heat exchanger defects, and major mechanical issues. Coverage does not include wear items like filters or capacitors, and labor is typically the homeowner's responsibility.

Specifications

SKU	ACIQ-48-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	48,000
Heating BTU	80,000
Refrigerant	R454B
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	76
Weight (in lbs)	120.000000
Feature	Spec
Replaces	GSX130483, GSX130484, GSX130485
Energy Star	Yes
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	1 1/8"
Liquid Valve Size	3/8"
Max Breaker Size	45 amps
Min. Breaker Size	26.3 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	30"
Width	21"
Depth	21"
Resources	CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information	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.
AHRI Certificate Number	7368843
Airflow Direction	Downflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	1600
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

What's the difference between 13 SEER and 13 SEER1 ratings? +

SEER1 reflects the updated 2023 DOE test standard using more realistic temperature conditions than legacy SEER testing. A 13 SEER1 unit performs roughly equivalently to a 12 SEER unit under old metrics, so don't directly compare numbers across rating versions when shopping competitors.

Can I install this in an upflow position instead of downflow? +

Yes, the configuration field lists upflow/downflow capability, so orientation flexibility exists. However, verify your ductwork layout and return air plenum design with the installation manual before switching orientation, as improper airflow direction reduces efficiency and heating distribution.

Is a variable-speed motor worth the extra cost versus single-speed? +

Yes. The ECM variable-speed motor ramps up and down with demand, reducing electricity consumption during partial-load hours and lowering your total seasonal utility costs. It also runs quieter (76 dBA) and improves temperature consistency compared to fixed-speed motors cycling on-off.

How does this unit compare to high-efficiency 16 SEER alternatives? +

Premium 16 SEER systems cost 20-30 percent more but save roughly 1-2 percent annually on cooling costs. For moderate climates with shorter cooling seasons, this 13 SEER unit provides better payback timing. Hot climates favor the premium efficiency.

Does online registration really matter for warranty coverage? +

Yes. Goodman requires online registration to activate the 10-year coverage. Without registration, warranty defaults to five years. Registration takes five minutes on their website and protects your investment against major component failure.

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