3.5 Ton 14 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This system excels for homeowners in moderate to cold climates seeking reliable comfort without premium pricing. The 97% AFUE furnace and 14 SEER air conditioner deliver measurable energy savings, while the modulating burner and variable-speed ECM blower ensure consistent comfort and lower utility bills year-round.

Review

The Goodman 3.5 Ton system combines a high-efficiency gas furnace with split air conditioning in a single offering. This upflow A-coil configuration targets retrofit applications where space constraints limit outdoor condenser placement. The system sits in the mainstream efficiency tier, avoiding both budget brands and premium variable-capacity units. Field-proven scroll compressor technology and modulating furnace design appeal to contractors who value reliability alongside reasonable pricing.

Performance numbers reveal a heating-focused design. The furnace achieves 97% AFUE with a modulating burner that scales from 30,000 to 100,000 BTU, matching output to actual home demand. Cooling delivers 42,000 BTU at 14 SEER, which is mid-range for modern split systems. The variable-speed ECM blower reaches 2,000 CFM maximum, adjusting automatically to room conditions. R410A refrigerant in the outdoor section meets current environmental standards, though newer R32 units exist for lower global warming potential.

Pros & Cons

Pros

97% AFUE furnace efficiency recovers nearly all fuel energy, minimizing heating waste during winter months
Modulating burner adjusts flame intensity across operating range, avoiding the on-off cycling that wastes fuel
Variable-speed ECM blower matches airflow to demand, reducing energy consumption and improving comfort
14 SEER cooling with 42,000 BTU capacity handles moderate climate zones efficiently
10-year parts warranty with online registration provides peace of mind for furnace and coil failures
PVC/plastic flue compatible with modern venting, simplifying retrofit installations in older homes

Cons

5-ton outdoor unit oversizes slightly against 3.5-ton rating claim, creating potential mismatch and efficiency loss
Single-stage compressor in outdoor unit cannot modulate cooling like the furnace does, limiting part-load efficiency
73 dB noise level runs louder than high-efficiency competitors with two-stage compressors

Who Should Buy

Best For

Homeowners in regions with significant heating seasons who value furnace efficiency over cooling features should consider this system. It works well for those replacing aging furnaces who want modulating burner comfort and long-term operating savings without spending on premium two-stage cooling.

Consider Alternatives If

Buyers in hot climates prioritizing cooling efficiency or those seeking true variable-capacity systems should explore two-stage compressor models instead.

3.5 Ton 14 SEER 97% AFUE 100,000 BTU Goodman Gas F

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Installation

Installation requires 115V single-phase power with a 22 to 35 amp breaker, fitting standard residential service. The 30-foot refrigerant line set allows flexible placement of the outdoor condenser unit. PVC flue venting keeps installation straightforward in homes lacking metal chimney infrastructure. The upflow configuration works in basements or closets, while the 34.5-inch height and 21-inch width suit tight spaces. AHRI Certificate 7424267 confirms matched performance ratings.

Warranty & Reliability

The 10-year parts warranty applies automatically upon online registration, covering furnace heat exchanger, compressor, and coil failures. This duration matches industry midrange coverage but trails premium brands offering 12 to 15 years. Registration is mandatory to activate benefits, so owners must complete paperwork promptly. Labor and refrigerant typically cost extra during warranty claims.

Specifications

SKU	ACIQ-4X-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	42,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years 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	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Specifications You will need AdobeÂ® AcrobatÂ® 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
AHRI Certificate Number	7424267
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	97%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Flue Location	Right
Burner Stages	Modulating
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

Why does the specs show a 5-ton outdoor unit for a 3.5-ton system? +

The outdoor condenser unit is separately rated, and oversizing occurs in some bundled offerings. A true 3.5-ton matched system would pair with a 3.5-ton condenser. This mismatch can reduce cooling efficiency and increase compressor runtime. Verify AHRI matching before purchase to confirm the correct pairing for your application.

Can I install this system in an attic or crawlspace? +

Yes, the upflow configuration and compact 21-inch by 28.75-inch footprint fit attics or crawlspaces with adequate clearance. The 30-foot refrigerant line set provides flexibility for outdoor condenser placement away from living areas. Ensure proper ductwork connections and return air pathways to maximize the 2,000 CFM blower capacity.

How much will this system cost to operate annually? +

Operating costs depend on local natural gas and electricity rates plus climate. The 97% AFUE furnace reduces heating fuel waste significantly. At 14 SEER, cooling efficiency is adequate but not premium. Estimate 15 to 25 percent lower heating costs than 80 to 85 percent AFUE systems over a full winter season.

How does this compare to higher-end two-stage systems? +

Two-stage compressors modulate cooling capacity like the furnace does, improving part-load efficiency and comfort. This single-stage unit cycles on and off at full capacity, generating more noise and temperature swings. Two-stage systems cost 20 to 30 percent more but deliver quieter operation and lower cooling bills in moderate climates.

What happens after the 10-year warranty expires? +

After 10 years, repair costs become your responsibility. Scroll compressors and modulating burners typically run reliably past 15 years with maintenance. Plan for eventual replacement around year 15 to 20 if performance declines or refrigerant leaks become frequent.

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