Independent Review · Updated June 2026

3.5 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

High-efficiency modulating furnace with 97% AFUE and solid cooling capacity for moderate climates.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3.5 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This system works best for homeowners in mild to moderate climates seeking efficient heating without paying for premium two-stage cooling. The 97% AFUE furnace will cut your heating bills noticeably, and the 13 SEER air conditioner handles moderate cooling loads well.

Review

The Goodman 3.5 Ton Gas Furnace and Air Conditioner System represents a solid mid-market option for homeowners balancing heating and cooling needs. This upflow unit pairs a powerful 100,000 BTU furnace with a 42,000 BTU air conditioner, making it suitable for homes in regions where winter heating dominates annual energy use. The system carries an ENERGY STAR certification and AHRI documentation, signaling proper engineering and third-party validation. At this price point, it competes directly with other contractor-grade equipment from manufacturers like Ruud and Lennox.

Efficiency figures are the real story here. The 97% AFUE furnace converts nearly all fuel to usable heat, a significant jump from older 80-90% units that lose energy up the flue. The modulating burner prevents on-off cycling, running closer to actual heating demand. Cooling performance delivers 13 SEER efficiency, meeting current federal minimums but trailing premium equipment at 16+ SEER. The variable-speed ECM blower motor actively manages airflow, reducing electricity waste. Single-stage reciprocating compressor technology is proven and reliable, though it cannot adjust cooling output as conditions change.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency significantly reduces winter heating costs compared to 80-90% units
  • Modulating burner adjusts heating output continuously, eliminating hot and cold cycles
  • Variable-speed ECM blower motor optimizes airflow and reduces runtime electricity use
  • 13 SEER cooling efficiency qualifies for utility rebates in many regions
  • A-coil design allows efficient retrofit into existing ductwork with upflow orientation
  • PVC exhaust flue requirement simplifies venting and reduces installation costs

Cons

  • Single-stage compressor cannot modulate cooling capacity, causing temperature swings in hot climates
  • 42,000 BTU cooling capacity underperforms the 100,000 BTU heating capacity for cooling-dominant regions
  • Reciprocating compressor produces higher noise at 75 dB compared to scroll compressor units
  • 13 SEER rating is mid-range today, with 16+ SEER options available for better efficiency

Who Should Buy

Best For

Homeowners in climates with cold winters and mild summers who prioritize heating efficiency and want to reduce fuel bills immediately. Contractors installing in homes where furnace replacement is the priority and the existing air conditioning is adequate.

Consider Alternatives If

Buyers in hot, humid climates needing aggressive cooling capacity, or those seeking cutting-edge multi-stage compressor technology for maximum comfort and efficiency.

3.5 Ton 13 SEER 97% AFUE 100,000 BTU Goodman Gas F
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Installation

Installation is relatively straightforward for licensed contractors. The unit requires 115V single-phase power, a 23.9 to 40-amp breaker, and standard refrigerant line connections using 3/8 inch sweat valves. The A-coil design fits most upflow plenums without extensive ductwork modification. PVC exhaust venting simplifies flue installation compared to metal vent systems. The 120-pound weight and compact 34.5 by 21 by 28.75 inch footprint allow maneuvering in tight basements or utility closets.

Warranty & Reliability

Goodman provides 10 years of parts coverage when you register online, a standard industry practice. This protects against compressor failure, heat exchanger failure, and component defects. Labor costs and refrigerant are the buyer's responsibility. Ten-year coverage ranks average for entry-level equipment, trailing premium brands offering 12-year warranties.

Specifications

SKUACIQ-4X-EHPD-UPG
Brand/ManufacturerACiQ
Cooling BTU42,000
Heating BTU100,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)75
Weight (in lbs)120.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)13
Condenser StagesSingle Stage
Compressor TypeReciprocating
Liquid Line3/8"
Suction Line7/8"
Liquid Valve Size3/8"
Max Breaker Size40 amps
Min. Breaker Size23.9 amps
Tonnage5 Ton
Valve TypeSweat
Height34.5"
Width21"
Depth28.75"
ResourcesGoodman Brochure Goodman Specifications 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.
ConfigurationUpflow/Horizontal
StyleA-Coil
AHRI Certificate Number7424267
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Suction Line Insulation Thickness3/8"
Length30 feet

Frequently Asked Questions

Why does a 3.5 ton unit have a 5 ton designation in the specs? +
The condensing unit is rated 5 tons, but the actual matched capacity is 3.5 tons cooling and 100,000 BTU heating. This mismatch can confuse buyers. The lower 3.5 ton figure determines your actual cooling capacity and system performance. Ask your contractor which spec applies to your home.
Will this unit fit in my basement with limited clearance? +
The unit measures 34.5 inches tall, 21 inches wide, and 28.75 inches deep, making it compact for basement installation. Verify clearance around the flue exit on the right side and ensure adequate space for service access. Check your plenum opening matches the A-coil dimensions before ordering.
How much will this system reduce my heating bills compared to my old furnace? +
A 97% AFUE unit converts 97 cents of every dollar spent to heat. If you currently have an 80% AFUE furnace, upgrading saves roughly 17-20% on heating costs over the winter season. Your actual savings depend on local gas prices, thermostat habits, and home insulation.
Is 13 SEER cooling efficient compared to newer air conditioners? +
13 SEER meets minimum federal efficiency standards but lags behind modern units at 15-18 SEER. If cooling is important in your region, upgrade to a higher SEER model. For homes where heating dominates, 13 SEER is acceptable and keeps total system cost reasonable.
What does the 10-year warranty actually cover? +
Goodman covers parts defects for 10 years with online registration. The compressor, coil, and motor are protected. Labor, refrigerant charges, and service calls are your cost. No coverage applies to improper installation or lack of maintenance.

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