Independent Review · Updated June 2026

Goodman 3.5 Ton 14 SEER 80% 120,000 BTU Furnace & AC System - R410A Upflow

Budget-friendly 3.5-ton combo system with solid 80% AFUE and Energy Star certification

7.8
IndustrialRank Score
Efficiency
8.0
Reliability
7.5
Value
8.5
Installation
8.2
Warranty
7.8
Goodman 3.5 Ton 14 SEER 80% 120,000 BTU Furnace & AC System - R410A Upflow
Current Price
$415
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for budget-conscious homeowners upgrading older furnaces or contractors stocking mid-range equipment. At $415, it delivers respectable heating and cooling without premium pricing, though the 80% AFUE efficiency trails high-end alternatives.

Review

The Goodman 3.5-ton furnace and air conditioning combo represents traditional mid-market equipment that prioritizes affordability without cutting critical corners. At $415, this system delivers honest performance for homeowners replacing 15-20 year old equipment. It's built on proven platforms that contractors have trusted for decades, making it a pragmatic choice for straightforward replacement jobs where budget drives the decision.

Performance specs tell a balanced story. The 42,000 BTU heating output and matching 42,000 BTU cooling capacity handle typical 1,200-1,500 square foot homes capably. The 80% AFUE efficiency rating is honest but dated, meaning gas bills run 10-15% higher than 95%+ systems available today. The scroll compressor with single-stage configuration keeps costs low but sacrifices the part-load efficiency gains of variable-capacity alternatives. Multi-speed blower capability at 2,000 CFM maximum provides reasonable comfort flexibility.

Pros & Cons

Pros

  • Exceptional value at $415 for a complete 3.5-ton furnace and AC combo
  • 80% AFUE meets Energy Star standards with proven gas furnace reliability
  • Multi-speed PSC blower motor allows zone control and quieter operation than single-stage units
  • 42,000 BTU heating and cooling capacity handles typical 1,200-1,500 sq ft homes efficiently
  • Compact dimensions (30" H x 24.5" W x 21" D) fit most existing installation footprints

Cons

  • 80% AFUE is dated by modern standards, where 95%+ systems are increasingly common
  • Single-stage compressor and burner limit part-load efficiency and comfort in mild weather
  • 73 dBA noise level runs slightly louder than premium competitors with variable-speed components
  • Spec sheet shows conflicting SEER rating (lists both 14 SEER and 16 SEER1, creating confusion)

Who Should Buy

Best For

Budget-conscious homeowners in moderate climates needing a dependable replacement system without premium features. Contractors performing value-oriented installations or maintaining diverse inventory will appreciate the straightforward design and proven Goodman scroll compressor.

Consider Alternatives If

Anyone in cold-climate regions where 80% efficiency becomes costly long-term, or homeowners prioritizing quiet operation and variable-capacity comfort should explore 95%+ AFUE and variable-speed models instead.

Goodman 3.5 Ton 14 SEER 80% 120,000 BTU Furnace &
$415
Buy at HVACDirect →

Installation

This upflow/horizontal configuration requires metal exhaust flue and operates on 208/230V single-phase 60Hz power with 22.4-35 amp breaker range. Standard sweat-connection valve design (3/8" and 7/8" ports) integrates easily into existing ductwork. 50-foot suction line with 1/2" insulation meets R410A requirements. Installation complexity remains low for experienced HVAC technicians familiar with conventional split systems.

Warranty & Reliability

The 10-year warranty applies with online registration, covering manufacturer defects across components. This aligns with industry standard for mid-tier equipment but falls short of extended warranties offered by premium brands. Registration requirement means buyers must complete paperwork promptly, as coverage depends on timely activation.

Specifications

SKULS381183850
Brand/ManufacturerOnline Supply
Cooling BTU42,000
Heating BTU42,000
RefrigerantR410A or R22
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)73
Weight (in lbs)48.000000
FeatureSpec
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 MotorMulti Speed - PSC
Maximum CFM2000
ConfigurationUpflow / Downflow
Flue LocationTop
Burner StagesSingle
Fuel TypeGas
Height30"
Width24.5"
Depth21"
ResourcesCAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Product FeaturesRebate Available
Energy StarYes
SEER1 (Efficiency)16
Condenser StagesSingle Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size35 amps
Min. Breaker Size22.4 amps
Tonnage3.5 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line1 1/8"
StyleA-Coil
Suction Line Insulation Thickness1/2"
Length50 feet

Frequently Asked Questions

Does this system support both R410A and R22 refrigerant? +
The specs list both R410A and R22 compatibility, but this requires clarification with the manufacturer before purchase. R410A is standard for new systems. Verify whether the unit ships pre-charged with R410A or if R22 compatibility applies only to legacy situations.
Will this fit my existing furnace space? +
At 30 inches tall, 24.5 inches wide, and 21 inches deep, this upflow configuration fits most standard closets and mechanical rooms designed for residential furnaces. Measure your existing unit's footprint and compare dimensions carefully, particularly height if space is tight.
How much will heating costs increase with 80% AFUE? +
An 80% AFUE unit converts $0.80 per dollar of gas into usable heat, meaning 20% waste. Modern 95%+ systems cost significantly more upfront but reduce annual heating bills 15-20% in cold climates. In moderate climates, payback periods extend beyond 10 years.
How does this compare to Carrier or Lennox 3.5-ton systems? +
This Goodman undercuts premium brands by 30-40% in pricing while offering similar cooling capacity. Carrier and Lennox typically provide higher SEER ratings, quieter operation, and extended warranties. Goodman sacrifices some comfort features but delivers reliable baseline performance.
Is the 10-year warranty automatic or do I need to register? +
Registration through Online Supply is required to activate the 10-year coverage. Unregistered units receive limited warranty. Complete registration immediately upon installation to ensure full protection.

Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.