3.5 Ton 13 SEER 98% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This ACiQ system is built for homeowners seeking balanced performance without premium pricing. The 97% AFUE furnace and 13 SEER air conditioner deliver respectable year-round comfort in moderate climates, particularly for new construction or full system replacements where upflow configuration fits.

Review

The ACiQ 3.5-ton combo system targets the pragmatic contractor and DIY homeowner seeking reliable mid-tier performance without flagship pricing. Combining an 80,000 BTU gas furnace with a 42,000 BTU air conditioner rated at 13 SEER, this upflow unit balances heating and cooling capabilities for residential applications across moderate climates. The modulating burner and variable-speed blower represent meaningful upgrades over older single-stage technology.

Heating efficiency reaches 97% AFUE, a respectable figure that earns Energy Star certification and delivers measurable savings on natural gas or propane bills. The 13 SEER cooling rating performs adequately in temperate regions but falls behind newer 14-16 SEER units for sustained air conditioning demand. Maximum airflow of 1600 CFM supports proper distribution across average residential homes when paired with correctly sized ductwork.

Pros & Cons

Pros

Modulating gas burner reduces heating cycles and improves comfort compared to single-stage units
Variable-speed ECM blower motor adjusts airflow from 0 to 1600 CFM for better efficiency and quieter operation
97% AFUE furnace efficiency qualifies for Energy Star certification and lowers heating bills substantially
PVC/plastic flue exhaust reduces installation costs compared to traditional metal ductwork requirements
10-year parts warranty with online registration provides solid protection at this price point

Cons

13 SEER rating trails newer two-stage units hitting 14-16 SEER, meaning higher cooling costs in hot climates
Single-stage reciprocating compressor cycles on and off rather than modulating, creating more temperature swings
75 dBA noise level is audible during operation, particularly during peak cooling demand

Who Should Buy

Best For

This system suits homeowners in moderate climates (zones 4-7) replacing aging equipment or building new where upflow placement works structurally. It balances solid efficiency gains against budget constraints for those prioritizing heating performance.

Consider Alternatives If

Skip this unit if you live in hot climates requiring heavy cooling, want cutting-edge SEER2 ratings, or demand near-silent operation. Consider 14+ SEER alternatives in high-cooling-demand regions.

3.5 Ton 13 SEER 98% AFUE 80,000 BTU Goodman Gas Fu

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Installation

Upflow configuration suits basements and crawlspaces with vertical clearance of 30 inches minimum. PVC flue exhaust simplifies venting through walls or roofs, reducing installation labor versus traditional metal ductwork. Electrical requirements demand a 23.9 to 40 amp circuit, typical for residential systems. Lineset sizes (3/8 inch liquid, 7/8 inch suction) integrate with standard residential copper tubing.

Warranty & Reliability

The 10-year parts warranty activates upon online registration at purchase. Coverage includes compressor, blower motor, and heat exchanger defects. This warranty ranks solid for mid-market equipment but trails high-end systems offering 12-15 year coverage. Registration is straightforward and highly recommended for claim protection.

Specifications

SKU	ACIQ-4X-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	42,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	75
Weight (in lbs)	120.000000
Feature	Spec
Energy Star	Yes
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	7/8"
Liquid Valve Size	3/8"
Max Breaker Size	40 amps
Min. Breaker Size	23.9 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	30"
Width	21"
Depth	21"
Resources	CAPT Installation Manual CAPT 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	7424266
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	97%
Blower Motor	Variable Speed - ECM
Maximum CFM	1600
Configuration	Upflow / Downflow
Burner Stages	Modulating
Fuel Type	Propane, Natural Gas
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does the 97% AFUE compare to my old furnace efficiency? +

Older furnaces typically rate 60-80% AFUE, meaning this unit recovers nearly all combustion heat. For a 100,000 BTU input, you gain roughly 17-37% more usable warmth, translating to 15-25% lower heating costs depending on usage patterns and gas prices in your region.

What's the difference between single-stage and modulating burners? +

Single-stage burners run full blast or off, cycling frequently and creating temperature swings. This unit's modulating burner adjusts flame intensity automatically, maintaining steadier indoor temperatures, reducing short-cycling wear on components, and improving efficiency by 2-4% versus traditional on-off operation.

Is 13 SEER adequate for hot summers? +

Thirteen SEER suffices in HVAC zones 4-7 where summer cooling demand is moderate. In hot climates (zones 8-10), consider 14+ SEER units because they run cooler hours and cost less annually. This system handles occasional heat waves but won't minimize bills during sustained 95-degree-plus stretches.

Can I use this system with my existing ductwork? +

Compatibility depends on duct size and condition. The 1600 CFM maximum airflow requires properly sized ducts, typically 6-8 inch mains for this tonnage. Have a technician measure existing ductwork and verify it meets ACCA Manual D requirements before installation to avoid airflow restrictions.

Does online warranty registration really matter? +

Yes. Without registration, warranty claims become difficult or denied. Registration is free, takes five minutes online, and protects your 10-year coverage. Keep documentation accessible. Most manufacturers require proof of purchase and serial number verification for any claim processing.

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