3.5 Ton 14.5 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This Goodman system suits homeowners upgrading from older equipment who want dependable performance without premium pricing. The 96% AFUE furnace and 14 SEER air conditioner deliver solid energy savings for moderate climates, backed by Goodman's established track record.

Review

The Goodman 3.5 ton combined gas furnace and air conditioning system represents a practical midmarket choice for residential HVAC replacement projects. This horizontal A-coil configuration suits attic or closet installations where space constraints exist. Goodman's no-frills approach has earned respect among contractors for reliable field performance, though the brand occupies the middle tier rather than premium positioning. The system combines 120,000 BTU heating capacity with 42,000 BTU cooling across a compact footprint measuring 34.5 inches tall and 24.5 inches wide.

Performance metrics show competent engineering without cutting-edge innovation. The furnace delivers 96% AFUE efficiency using a two-stage burner configuration, while the air conditioner achieves 14 SEER1 efficiency with a scroll compressor and single-stage operation. The multi-speed ECM blower motor varies CFM from low output to 2000 maximum, matching airflow to actual heating and cooling demand. Operating noise registers at 73 dB, which sounds moderately loud during peak cooling cycles. Electrical requirements remain modest at 115V single-phase, with breaker sizing between 22 and 35 amps.

Pros & Cons

Pros

96% AFUE furnace efficiency translates to lower heating bills and minimal wasted fuel
14 SEER air conditioner qualifies for Energy Star certification and utility rebates
Two-stage burner on furnace reduces short-cycling and improves comfort
Multi-speed ECM blower motor adjusts airflow based on demand, enhancing efficiency
PVC exhaust capability simplifies venting compared to metal ductwork requirements

Cons

Single-stage compressor on air conditioner limits part-load efficiency compared to variable-capacity units
73 dB noise level is moderately loud for outdoor operation during evening hours
5-ton tonnage mismatch with 3.5-ton claim suggests spec inconsistency that requires clarification

Who Should Buy

Best For

Homeowners replacing 15+ year old systems who prioritize cost-effectiveness over premium features. Contractors installing equipment in rental properties or value-focused residential markets will appreciate the straightforward design and solid warranty.

Consider Alternatives If

Anyone seeking variable-capacity cooling or seeking the quietest outdoor operation should consider scroll compressor units or variable-speed alternatives.

3.5 Ton 14.5 SEER 96% AFUE 120,000 BTU Goodman Gas

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Installation

Installation requires 3/8 inch refrigerant liquid lines and 7/8 inch suction lines with 3/8 inch foam insulation already included for the 30-foot maximum run length. The system accepts PVC or plastic exhaust venting with flue location on the right side, simplifying duct routing. Horizontal airflow direction suits basement or attic mounting scenarios. Most HVAC contractors can complete installation within one service day given standard ductwork and electrical service availability.

Warranty & Reliability

Goodman provides lifetime heat exchanger coverage, 10-year unit replacement protection, and 10-year parts coverage when registered online. This warranty is respectable but not exceptional by modern standards. The lifetime heat exchanger component is valuable since heat exchangers represent the most expensive failure point. Online registration requirement is straightforward and typically completed during installation.

Specifications

SKU	ACIQ-4X-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	42,000
Heating BTU	120,000
Refrigerant	R410A
Electrical	115 V. 1 Phase 60 Hz
Warranty	Lifetime Heat Exchanger, 10 Years Unit Replacement, and 10 Years Parts with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	120.000000
Feature	Spec
Energy Star	Yes
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	35 amps
Min. Breaker Size	22 amps
Tonnage	5 Ton
Height	34.5"
Width	24.5"
Depth	28.75"
Resources	GMEC96 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 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.
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	96%
Blower Motor	Multi-Speed - ECM
Maximum CFM	2000
Flue Location	Right
Burner Stages	Two
Fuel Type	Gas
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

What's the difference between the stated 3.5 ton and 5 ton tonnage in the specs? +

The specification sheet shows conflicting tonnage data, 3.5 ton in the title and 5 ton in the specs table. This discrepancy requires vendor clarification before purchase. Cooling capacity of 42,000 BTU translates to approximately 3.5 tons, suggesting the title is correct and the 5-ton field is a data entry error.

Can this system work in basement or attic locations? +

Yes, the horizontal A-coil configuration works well for both locations. The 34.5-inch height fits most attic spaces, while basement installations need concrete pad placement. Verify clearance for the 24.5-inch width and 28.75-inch depth before ordering, and ensure adequate return air ductwork for 2000 CFM maximum airflow.

Is 14 SEER enough for energy savings versus my current equipment? +

Upgrading from equipment older than 15 years typically saves 20-30% on cooling costs with 14 SEER versus 10 SEER equipment. The 96% AFUE furnace provides similar heating savings. Your actual savings depend on local energy rates and usage patterns, but Energy Star qualification suggests solid real-world performance.

How does this compare to higher-end Goodman or Carrier models? +

This unit uses single-stage compressor cooling versus variable-capacity on premium tiers, reducing part-load efficiency. Premium models often reach 16-18 SEER with quieter operation below 70 dB. This system prioritizes affordability, making it ideal for budget-conscious buyers willing to accept slightly higher utility costs.

What does the 10-year unit replacement warranty actually cover? +

This covers compressor, furnace, and air handler failures under normal use. It does not cover refrigerant loss, damage from improper installation, or maintenance neglect. Registration is mandatory within 30 days of installation, so confirm your contractor handles this before leaving the job site.

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