Independent Review · Updated June 2026

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

Budget-friendly 2.5-ton combo system with solid 96% heating efficiency and 13 SEER cooling

7.8
IndustrialRank Score
Efficiency
8.2
Reliability
7.5
Value
8.3
Installation
8.0
Warranty
7.8
2.5 Ton 13 SEER 96% AFUE 40,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
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// Bottom Line
This Goodman system works well for homeowners prioritizing upfront savings on a mid-size 2.5-ton installation. The 96% AFUE furnace and 13 SEER AC deliver respectable efficiency without premium pricing, making it ideal for budget-conscious buyers in moderate climates.

Review

Goodman's 2.5-ton horizontal system sits in the practical middle ground for residential HVAC buyers. This combination furnace and air conditioner targets contractors and homeowners seeking efficient, dependable equipment without premium pricing. The horizontal A-coil design makes it popular for attic and crawlspace installations where vertical units won't fit. At this price point, it competes directly with other entry-to-mid tier Goodman products, though it trades some advanced features for affordability.

The furnace delivers 40,000 BTU heating output at 96% AFUE efficiency, translating to strong heating performance with minimal fuel waste. The air conditioning side produces 30,000 BTU cooling capacity at 13 SEER, which meets current minimum federal standards but trails premium systems offering 15+ SEER ratings. The multi-speed blower reaches 800 CFM maximum airflow, and single-stage compressor operation keeps things simple. Electrical requirements run 208 to 230 volts at 1 phase 60 Hz with a 25-amp maximum breaker, typical for mid-size residential installations.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% alternatives
  • 13 SEER cooling rating meets modern baseline efficiency standards for reasonable electric bills
  • 40,000 BTU heating capacity handles most 2.5-ton applications across varied climate zones
  • Horizontal A-coil configuration fits tight attic or crawlspace installations where vertical models don't work
  • 10-year warranty with online registration provides solid coverage for parts and labor protection

Cons

  • Not Energy Star certified, meaning it misses top-tier efficiency tiers available from premium brands
  • Single-stage compressor and burner lack modulation technology found in higher-end systems, reducing part-load efficiency
  • 73 dBA noise level runs louder than variable-speed competitors, potentially noticeable during operation

Who Should Buy

Best For

Homeowners in small to medium homes (1,000 to 2,000 square feet) who need a reliable gas furnace and AC combo without spending on premium brands. Contractors installing budget systems for price-sensitive customers will appreciate the straightforward design and solid Goodman reputation.

Consider Alternatives If

Energy-conscious buyers willing to pay more for SEER 15+ and variable-speed components, or anyone in noise-sensitive settings where whisper-quiet operation matters.

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

Installation uses standard 3/8 inch liquid line and 3/4 inch suction line connections with sweat valve fittings. The unit requires PVC or plastic exhaust flue venting, common in modern homes. Dimensions measure 32.5 inches tall by 26 inches wide by 26 inches deep, fitting most horizontal applications. Goodman provides comprehensive installation manuals and technical documentation, though professional installation is strongly recommended for proper refrigerant charging and airflow configuration.

Warranty & Reliability

The 10-year parts and labor warranty activates upon online registration with Goodman. This coverage protects against compressor failure, heat exchanger cracks, and component defects, which represents solid protection for mid-tier equipment. Registration is straightforward online, and Goodman's warranty service network is extensive through authorized dealers.

Specifications

SKULS38343850
Brand/ManufacturerOnline Supply
Cooling BTU30,000
Heating BTU40,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)22.000000
FeatureSpec
ConfigurationDownflow/Horizontal
Liquid Line3/8"
Suction Line3/4"
Tonnage2.5 Ton
StyleA-Coil
Height32.5"
Width26"
Depth26"
ResourcesGoodman Installation Manual Goodman Specifications Goodman Technical Manual Goodman Warranty Information Goodman Brochure Goodman Service Instructions Goodman Kit Instructions Goodman Parts Manual You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 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.
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE96%
Blower MotorMulti Speed
Maximum CFM800
Burner StagesSingle
Fuel TypeGas
Energy StarNo
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Valve Size3/8"
Max Breaker Size25 amps
Min. Breaker Size16.7 amps
Valve TypeSweat
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Is this system Energy Star rated? +
No, this model is not Energy Star certified. While the 96% AFUE and 13 SEER ratings are respectable, Energy Star requires higher efficiency tiers. If energy rebates or tax credits matter to your purchase decision, verify local incentive programs first.
Can this fit in an attic space? +
Yes, the horizontal A-coil configuration is designed for attic installation. At 32.5 inches tall and 26 inches deep, confirm your attic opening and space accommodate these dimensions. Professional installation ensures proper ductwork connections and support.
How does 13 SEER compare to newer systems? +
13 SEER meets federal minimums but trails newer technology. Systems rated 15 to 18 SEER use variable-speed compressors and improved refrigerant circuits, delivering 15 to 40 percent lower cooling costs. Budget constraints often justify the 13 SEER choice for moderate climates.
What size home does 2.5 tons cool effectively? +
A 2.5-ton system typically handles 1,200 to 2,000 square feet, depending on insulation, sun exposure, and climate. Hot climates may require professional load calculations to confirm adequate capacity. Undersizing causes longer run times and higher electricity use.
Do I need to register for the warranty? +
Yes, online registration activates the 10-year warranty. Goodman requires registration within 30 days of installation. Keep your purchase receipt and contact information updated for hassle-free claims if issues arise.

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