Independent Review · Updated June 2026

3 Ton 17 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

Budget-friendly 3-ton combo system with solid two-stage efficiency and reasonable performance

7.4
IndustrialRank Score
Efficiency
7.8
Reliability
7.5
Value
8.2
Installation
8.0
Warranty
7.5
3 Ton 17 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$89
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This system makes sense for cost-conscious homeowners upgrading from older equipment in moderate climates where the 80% AFUE furnace and 17 SEER cooling capacity meet their needs. At $89, you're getting entry-level specs that perform adequately, though this isn't a premium efficiency choice.

Review

The Goodman 3-ton horizontal system sits in the value tier of the HVAC market, targeting budget-focused buyers who need reliable cooling and heating without premium pricing. This matched pair combines a 100,000 BTU furnace with a 35,000 BTU condenser, using proven scroll compressor technology. At $89, it undercuts most branded competitors, making it attractive for contractors handling rental units or homeowners facing unexpected equipment failure.

Performance specs show 80% AFUE heating efficiency and 17-18 SEER cooling, positioning it as baseline rather than premium. The two-stage burner and two-stage condenser design means the system runs at reduced capacity during mild weather, cutting energy use compared to single-stage equipment. Variable-speed blower handles up to 2000 CFM, adapting airflow to actual demand. However, that 71 dB noise level runs louder than many competitors operating at 65-68 dB.

Pros & Cons

Pros

  • Extremely affordable at $89 for a complete 3-ton matched system
  • Two-stage compressor and burner design reduces runtime and energy waste
  • Variable-speed blower motor provides better comfort control than single-speed alternatives
  • ENERGY STAR certified for cooling, meeting EPA minimum efficiency thresholds
  • Horizontal configuration works well for basement or attic installations with limited headroom
  • Scroll compressor is proven reliable technology used across many manufacturers

Cons

  • 80% AFUE furnace is baseline efficiency, missing out on 90%+ high-efficiency models that reduce heating costs
  • 17 SEER cooling (note: specs show SEER1 of 18, but title claims 17 SEER) creates minor spec confusion that needs clarification
  • 71 dB noise level is noticeably loud compared to premium two-stage systems rated 65-68 dB
  • Warranty requires online registration to activate the 10-year coverage

Who Should Buy

Best For

Homeowners replacing failed equipment on tight budgets in areas with moderate heating and cooling needs will appreciate the low purchase price. Contractors doing rental properties or value-conscious replacements find the straightforward two-stage design easy to install and service.

Consider Alternatives If

Skip this if you're prioritizing heating efficiency or want the lowest operating costs, since an 80% AFUE furnace wastes 20% of fuel. High-noise-sensitive buyers should audition it first due to the 71 dB output.

3 Ton 17 SEER 80% AFUE 100,000 BTU Goodman Gas Fur
$89
Buy at HVACDirect →

Installation

This horizontal unit requires 120V single-phase 60Hz power with a 21.3 to 35 amp breaker, making it compatible with standard home electrical. Sweat-type valve connections mean standard brazing skills apply. The 3/8 inch liquid line and 7/8 inch suction line with 3/4 inch insulation follow typical sizing, though pre-charged refrigerant lines simplify field work. Metal exhaust flue is required, limiting placement options.

Warranty & Reliability

The 10-year parts warranty provides reasonable coverage for a budget system, but requires online registration to activate. This is standard practice among budget manufacturers. Coverage appears to include compressor and major components. Ten years matches mid-tier competitors, though premium brands often offer 12-year protection. Keep documentation for claims processing.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical120 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)30.000000
FeatureSpec
Product FeaturesTwo Stage Condenser
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size35 amps
Min. Breaker Size21.3 amps
Tonnage3.5 Ton
Valve TypeSweat
Height21"
Width21.125"
Depth26"
ResourcesCHPF Installation Manual CHPF Specifications Sheet Goodman Evaporator Coil Warranty 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 DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

What's the actual cooling capacity in tons? +
The specs list 3.5 ton tonnage with 35,000 BTU cooling output. This slight mismatch (true 3-ton would be 36,000 BTU) suggests conservative rating or testing methodology. Real-world cooling should match 3-ton capacity adequately for most homes in moderate climates.
Can I use this in an attic or crawlspace? +
The horizontal configuration (21 inches tall, 26 inches deep) fits tight spaces where upflow furnaces won't fit. Ensure metal exhaust flue routing is possible and airflow paths remain unobstructed. Variable-speed blower handles restricted airflow better than single-stage designs.
How does 80% AFUE compare to modern standards? +
80% AFUE is the baseline for gas furnaces allowed by current federal standards. High-efficiency units hit 90-96% AFUE, cutting heating costs 15-20% annually. If heating dominates your energy bills, this might cost $300-500 more per year than premium equipment.
Is this system Energy Star certified? +
Yes, the cooling portion meets Energy Star standards. However, Energy Star certification doesn't apply to furnaces at this efficiency level, only to 95%+ AFUE models. Cooling efficiency is honest but not exceptional compared to premium competitors.
What does the warranty actually cover? +
10 years parts coverage applies to compressor and major components after online registration. Check terms for labor coverage, which often isn't included. Evaporator coil carries separate warranty noted in documentation. Read fine print before purchase.

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