3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Heat Pump System - Upflow Review 2026

// Bottom Line

This ACiQ unit is ideal for homeowners in moderate climates who want efficient cooling (14 SEER) paired with gas heating backup. The 100,000 BTU furnace with 80% AFUE and two-stage burner delivers solid winter performance without breaking the bank on a full heat pump system.

Review

The ACiQ 3-ton dual-fuel system bridges an important market gap for homeowners who want efficient summer cooling without abandoning proven gas heating. At 14 SEER and 100,000 BTU capacity, this unit represents a practical middle ground between basic single-fuel systems and full-conversion heat pumps. The Goodman backing and Energy Star certification signal solid engineering, though the 80% AFUE rating shows this is not a premium efficiency product.

Performance specs reveal capable but not cutting-edge equipment. The 36,000 BTU cooling output with 14 SEER efficiency handles most residential loads efficiently, while the two-stage 100,000 BTU furnace prevents overshooting in mild weather. A variable-speed blower motor managing up to 2,000 CFM improves comfort compared to single-speed alternatives. The scroll compressor and R410A refrigerant are industry standard, and the 120V electrical requirement works with standard residential panels at 22.4 to 30 amps.

Pros & Cons

Pros

14 SEER cooling efficiency exceeds minimum standards, reducing summer energy costs measurably
Dual-fuel design combines heat pump efficiency with gas furnace reliability for year-round comfort
100,000 BTU heating capacity with two-stage burners provides precise temperature control
Variable-speed blower motor adjusts airflow up to 2,000 CFM for better humidity management
10-year warranty with online registration covers parts and provides peace of mind

Cons

80% AFUE furnace is dated compared to 90%+ high-efficiency models now standard
Single-stage compressor cannot modulate cooling capacity, leading to some short-cycling in mild weather
74 dB noise level runs louder than quieter premium units, noticeable from nearby rooms
Requires metal exhaust flue and proper venting setup, complicating some retrofit installations

Who Should Buy

Best For

Homeowners in regions with moderate winters and hot summers who want efficient cooling without investing in full heat pump systems. Also suited for those replacing older dual-fuel equipment who need gas backup reliability alongside modern cooling efficiency.

Consider Alternatives If

Buyers in very cold climates should look at higher-efficiency furnaces, and those seeking premium quiet operation should compare units with lower decibel ratings.

3 Ton 14 SEER 80% AFUE 100,000 BTU Goodman Gas Fur

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Installation

Installation demands proper refrigerant line sizing with 3/8-inch liquid and 7/8-inch suction lines, plus 3/4-inch insulation thickness to prevent efficiency loss. The upflow A-coil configuration suits attic or basement placement. Metal exhaust venting is mandatory for the furnace. Most contractors complete installation in one day, though ductwork modifications may add cost in older homes with undersized systems.

Warranty & Reliability

ACiQ provides 10 years coverage on parts with online registration, protecting against compressor failure and major component defects. This standard warranty does not cover refrigerant, labor, or damage from improper installation. Registration is straightforward and essential, as unregistered units typically receive only 5-year coverage.

Specifications

SKU	ACIQ-36-HPC-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	36,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	120.000000
Feature	Spec
Replaces	GSZ140371
Product Features	Rebate Available
Energy Star	Yes
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	30 amps
Min. Breaker Size	22.4 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	34.5"
Width	21"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Technical Information Goodman User Information Goodman Warranty 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
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Will this system replace my old Goodman furnace and air conditioner separately? +

Yes, it replaces the GSZ140371 model. The integrated design combines both functions in one compact footprint, eliminating redundant equipment. Installation requires connecting existing ductwork, electrical lines, and refrigerant lines from your coil. Most contractors charge $500 to $1,200 for labor depending on your setup's complexity.

What electrical panel upgrades are needed for installation? +

None if your panel has a 30-amp breaker available. The unit requires 22.4 to 30 amps at 120V single phase 60 Hz. Standard residential panels can handle this. If your panel lacks space, adding a breaker costs $150 to $300 professionally installed.

How does 14 SEER compare to newer units, and what will my cooling bills look like? +

14 SEER is above minimum standards but trails newer 16-18 SEER units. On a 3-ton system running 1,500 cooling hours yearly, expect $25 to $40 monthly savings versus 10 SEER equipment. Exact savings depend on local electricity rates, typically $300 to $480 annually in moderate climates.

Should I choose this over a full heat pump system without gas backup? +

Choose gas backup if winters regularly drop below 35 degrees or you live in areas with frequent power outages. Full heat pumps excel in mild climates. This dual-fuel unit costs more upfront but avoids auxiliary electric heating strips that spike bills during cold snaps in transitional climates.

Is the 10-year warranty actually useful, or does it exclude most failures? +

It covers legitimate compressor and component failures well. The main limitations are refrigerant charge, installation labor, and damage from poor maintenance or freezing. Register promptly online to activate coverage, otherwise you get only 5 years.

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