3 Ton 14 SEER 96% AFUE 80,000 BTU Goodman Gas Furnace and Heat Pump System - Horizontal Review 2026

// Bottom Line

This ACiQ unit is built for contractors who need to squeeze a dual-fuel system into crawlspaces, attics, or tight mechanical rooms where standard vertical equipment won't fit. The 96% AFUE furnace and 14 SEER heat pump deliver solid efficiency without requiring major ductwork redesigns, making it ideal for retrofit work and space-constrained homes.

Review

The ACiQ 3 Ton horizontal furnace-heat pump system fills a practical gap in the retrofit market. This Goodman-manufactured unit combines a 36,000 BTU furnace with matching 36,000 BTU cooling capacity in a compact, space-saving design that measures just 21 inches tall and 26 inches deep. It's engineered specifically for tight installation spaces where traditional vertical units create clearance headaches, making it a workhorse for contractors tackling older homes, attics, and cramped mechanical rooms.

Performance metrics are solid across the board. The 96% AFUE furnace efficiency exceeds the federal 90% baseline and translates to real savings on heating bills, particularly in northern climates. On the cooling side, 14 SEER rating confirms ENERGY STAR certification and qualifies most buyers for state or utility rebates that can offset purchase costs. The variable-speed ECM blower motor runs at 1,600 CFM maximum but modulates down during part-load operation, keeping noise at a reasonable 74 dBA while improving dehumidification performance.

Pros & Cons

Pros

96% AFUE furnace efficiency reduces heating costs by 4% compared to 92% standard units
14 SEER heat pump rating qualifies for ENERGY STAR and many utility rebates
Horizontal orientation fits attics, crawlspaces, and basement joist spaces where vertical units cannot
Variable-speed ECM blower motor adjusts airflow to load, improving comfort and reducing noise to 74 dBA
Two-stage burner and single-stage compressor provide responsive heating without excessive cycling
PVC exhaust compatibility eliminates expensive stainless steel flue requirements on retrofit jobs
10-year warranty with online registration covers parts and labor on major components

Cons

3.5-ton capacity limits applicability to smaller homes; check load calculations carefully
Single-stage condenser lacks variable capacity, so it cycles on-off during mild weather rather than modulating
Scroll compressor is durable but not as efficient as rotary designs under partial load conditions
208/230V single-phase requirement may require electrician review on older service panels

Who Should Buy

Best For

Contractors performing furnace or heat pump replacements in older homes with attic or crawlspace installations where horizontal equipment is mandatory. Homeowners in moderate climates looking for a budget-conscious upgrade that combines heating and cooling without a full system replacement.

Consider Alternatives If

Buyers in large homes needing more than 3.5 tons of capacity, or those prioritizing variable-capacity cooling for extreme climate zones should explore higher-tonnage or inverter-driven options.

3 Ton 14 SEER 96% AFUE 80,000 BTU Goodman Gas Furn

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Installation

Installation complexity is moderate. The unit operates on 208/230V single-phase 60 Hz power and requires a 22.4 to 30-amp breaker, which most homes support but should be verified before ordering. PVC exhaust piping simplifies venting compared to stainless steel requirements, saving labor and material costs. Refrigerant lines use standard 3/8-inch and 7/8-inch sweat connections with pre-wrapped 3/4-inch insulation for the suction line. Horizontal orientation demands proper condensate drainage planning to avoid water backup.

Warranty & Reliability

ACiQ provides a 10-year parts warranty when you register online after installation, which is competitive for the price point. The warranty covers the heat pump compressor, furnace heat exchanger, and major components but does not include labor or routine maintenance. Registration is straightforward and strongly recommended, as it protects your investment against manufacturing defects during the first decade of operation.

Specifications

SKU	ACIQ-36-HPC-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	36,000
Heating BTU	36,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	120.000000
Feature	Spec
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	Horizontal
Energy Star	Yes
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Height	21"
Width	21.125"
Depth	26"
Resources	CHPF Installation Manual CHPF 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.
Replaces	GSZ140371
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	3.5 Ton
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Does this unit replace older Goodman models, and what do I need to know about compatibility? +

This unit replaces the GSZ140371 model designation. It uses R410A refrigerant and standard sweat connections, so existing lineset can be reused if it was properly sized and evacuated for R410A. Always verify blower capacity matches your ductwork static pressure before finalizing the upgrade to prevent airflow problems.

Can I install this in my attic, and what about venting requirements? +

Yes, the horizontal configuration is designed for attic and crawlspace mounting. You must run PVC or plastic exhaust piping to the exterior, which is flexible and requires less slope than metal flues. Ensure the condensate drain routes downward with proper slope and trap to prevent water pooling inside the unit.

How does 14 SEER compare to newer SEER2 ratings, and will I save money on cooling? +

SEER (Seasonal Energy Efficiency Ratio) and SEER2 are different metrics, but 14 SEER indicates strong efficiency for this price tier. Most homes upgrading from 10-year-old 10 SEER equipment see 20-30% reduction in cooling costs, depending on climate and insulation quality.

Is this a good choice over a traditional furnace-only system, and when should I add heat pump capability? +

Integrated heat pump systems like this work best in moderate climates where heating and cooling loads are roughly balanced. In colder regions, the furnace handles peak winter loads while the heat pump covers shoulder seasons efficiently. Single-stage cooling is less efficient than variable-capacity models in extreme heat, so verify suitability for your location.

What does the 10-year warranty actually cover if something breaks after year three? +

The 10-year warranty covers manufacturing defects in the heat pump compressor, furnace components, and controls. Labor and refrigerant are typically not included. Review your specific warranty paperwork after registration to confirm coverage limits and exclusions.

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