2.5 Ton 13 SEER 96% AFUE 40,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow Review 2026

// Bottom Line

This 2.5-ton system suits homeowners in mixed climates who need balanced heating and cooling without premium pricing. The 96% AFUE furnace delivers excellent heating efficiency, while the 13 SEER air conditioner handles moderate cooling loads capably.

Review

The Goodman 2.5-ton gas furnace and air conditioner system positions itself as a practical middle-ground choice for residential HVAC upgrades. This downflow configuration combines a 40,000 BTU furnace with a 30,000 BTU cooling unit, making it suitable for homes requiring moderate heating and cooling demands. The system carries Energy Star certification and qualifies for rebates in many regions, lowering initial investment for budget-conscious homeowners.

Performance metrics impress for the price tier. The furnace achieves 96% AFUE efficiency using natural gas or propane, meaning nearly all fuel converts to usable heat rather than escaping through the flue. The cooling side delivers 13 SEER, a respectable efficiency rating that outperforms baseline 10 SEER units by roughly 30% in seasonal efficiency. The variable-speed ECM blower motor handles up to 1200 CFM, adapting airflow to actual demand rather than running at fixed speeds.

Pros & Cons

Pros

96% AFUE furnace efficiency means lower heating bills and minimal wasted fuel energy
13 SEER rating meets Energy Star standards, reducing summer cooling costs considerably
Variable-speed ECM blower motor adapts to demand, improving comfort and efficiency
Two-stage burner provides modulating heat output for better temperature control
Downflow configuration works in basements and tight spaces where upflow won't fit
10-year warranty with online registration provides solid protection coverage

Cons

73 dB noise level runs slightly loud during full operation, noticeable in quiet homes
Single-stage compressor lacks modulation capability found in higher-end units
R454B refrigerant is newer, so fewer technicians have experience servicing it currently
40,000 BTU heating capacity may require supplemental heat in extremely cold climates

Who Should Buy

Best For

Homeowners in temperate to mixed climates seeking a reliable, efficient combo system without ultra-premium features. Contractors value this unit for retrofits in downflow installations where space or existing ductwork constrains options.

Consider Alternatives If

Buyers in very cold regions needing 60,000+ BTU heating capacity, or those prioritizing whisper-quiet operation and variable-capacity cooling should explore higher SEER models.

2.5 Ton 13 SEER 96% AFUE 40,000 BTU Goodman Gas Fu

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Installation

Installation requires standard HVAC skills and copper line running between indoor and outdoor units. The unit accepts 3/8-inch suction and liquid lines with sweat connections, standard in the industry. Electrical needs are modest: 115V single-phase at 60 Hz with breaker sizing between 16.7 and 25 amps. The plastic PVC exhaust flue requirement simplifies venting compared to metal ductwork alternatives.

Warranty & Reliability

Coverage spans 10 years with online registration, protecting against compressor and component failures. This registration requirement is simple but mandatory to activate full coverage, so buyers must complete it upon installation. The warranty aligns with industry standards for mid-tier equipment, offering reasonable peace of mind without lifetime provisions found in premium brands.

Specifications

SKU	ACIQ-30-EHPD-UPG
Brand/Manufacturer	ACiQ
Cooling BTU	30,000
Heating BTU	40,000
Refrigerant	R454B
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)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	3/4"
Liquid Valve Size	3/8"
Max Breaker Size	25 amps
Min. Breaker Size	16.7 amps
Tonnage	2.5 Ton
Valve Type	Sweat
Height	22"
Width	17.5"
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	7368837
Airflow Direction	Downflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	1200
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What does 96% AFUE actually mean for my heating bills? +

AFUE measures heating efficiency as a percentage of input fuel converted to warmth. At 96%, only 4% of energy escapes unused. For example, running 10,000 therms annually, you waste roughly 400 therms at 96% AFUE versus 1000+ therms at 80% AFUE, saving hundreds annually depending on local gas rates.

Can this system work in my basement in downflow mode? +

Yes, downflow configuration is ideal for basement installations. The unit sits vertically, pulling return air from above and delivering warm or cool air downward through basement ducts. Verify ceiling clearance of at least 22 inches for height, 17.5 inches width, and 21 inches depth before purchase.

How does 13 SEER compare to newer SEER2 ratings? +

SEER2 uses updated testing standards and typically shows 10-15% lower numbers than traditional SEER. A 13 SEER unit roughly equals 11-12 SEER2, still solid but not cutting-edge. If SEER2 comparisons matter for rebates, verify current requirements in your state before assuming qualification.

Why single-stage compression instead of variable capacity? +

Single-stage compressors cost less upfront and run reliably for decades. Variable-capacity compressors modulate capacity for better efficiency in mild weather, but add complexity and expense. For moderate climates, single-stage efficiency gaps narrow compared to premium systems.

Do I need special technician training for R454B refrigerant? +

R454B is becoming standard industry-wide, but older technicians may lack familiarity. Confirm your HVAC contractor has EPA certification and R454B handling experience before installation to ensure proper servicing and future repair capability.

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