Independent Review · Updated June 2026

4 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Budget-friendly 80% AFUE furnace with solid cooling efficiency and two-stage heating

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
4 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$2071
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system works best for homeowners in moderate climates who prioritize upfront savings and don't mind standard efficiency ratings. At $2071, it's a smart choice for retrofit jobs where budget constraints matter, though it won't match premium brands on efficiency ceilings.

Review

The Goodman 4-ton upflow system sits squarely in the value tier of residential HVAC equipment. At $2071, it undercuts premium brands by 30 to 40 percent while keeping respectable efficiency ratings. This unit targets homeowners and contractors who need proven cooling and heating without premium pricing. The upflow configuration works for basement and garage installations where space or ducting favors vertical mounting.

Cooling delivers 47,000 BTU at 18 SEER1 efficiency, which qualifies for ENERGY STAR and beats minimum code requirements. The two-stage scroll compressor modulates capacity rather than cycling fully on and off, reducing temperature swings. Heating produces 80,000 BTU with two-stage burner control and 80% AFUE. The variable-speed blower motor maintains 2000 CFM maximum airflow while adjusting speed to actual load. Propane or natural gas compatibility gives fuel flexibility.

Pros & Cons

Pros

  • Two-stage burner provides better temperature control and reduced cycling than single-stage units
  • Variable speed blower motor maximizes comfort by adjusting airflow to demand, not just on-off cycles
  • ENERGY STAR certified with 18 SEER1 cooling efficiency, exceeding minimum standards significantly
  • Metal exhaust flue requirement keeps installation straightforward without special venting materials
  • 10-year warranty with online registration covers parts and labor on major components
  • 2000 CFM maximum airflow handles ductwork efficiently across most residential layouts

Cons

  • 80% AFUE heating efficiency trails premium condensing models that reach 95%+, meaning higher gas bills long-term
  • 5-ton condenser paired with 4-ton furnace rating creates specification confusion that requires careful installer attention
  • 72 dB noise level runs louder than variable-capacity competitors during peak operation
  • R410A refrigerant requires certified handling, limiting DIY troubleshooting and repair options

Who Should Buy

Best For

Homeowners replacing failed equipment who need immediate, affordable relief and can live with standard efficiency numbers. Contractors handling rental properties or budget-conscious customers in areas where heating loads stay moderate will see good ROI.

Consider Alternatives If

Anyone in harsh climates with extended heating seasons, high natural gas rates, or who plans to stay in the home 15+ years should invest in 90%+ AFUE condensing furnaces despite higher upfront cost.

4 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
$2071
Buy at HVACDirect →

Installation

Upflow configuration simplifies mounting in basements and utility closets. Metal flue exhaust venting is standard, avoiding proprietary plastic vent materials. The 208/230V single-phase electrical requirement fits most home panels, though breakers must handle 29.3 to 50 amp range. R410A refrigerant lines use 3/8 inch liquid and 7/8 inch suction sizing. CAPF installation manual and spec sheets guide proper ductwork connections and refrigerant charging.

Warranty & Reliability

Goodman's 10-year parts and labor warranty activates through online registration, a critical step many homeowners skip. This covers compressor, heat exchanger, and coil failures but excludes wear items and misapplication. Registration is free and takes minutes. Most contractors include this step, but verify before signing the installation contract.

Specifications

SKUTX5N4
Brand/ManufacturerGoodman
Cooling BTU47,000
Heating BTU80,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)72
Weight (in lbs)2.500000
FeatureSpec
AHRI Certificate Number204633307
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
Height30"
Width24.5"
Depth21"
ResourcesCAPF Installation Manual CAPF 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.
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size50 amps
Min. Breaker Size29.3 amps
Tonnage5 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

Why does the specs list 5-ton condenser but only 4-ton furnace capacity? +
The tonnage mismatch reflects the air conditioning cooling capacity (47,000 BTU) versus heating output (80,000 BTU). The 5-ton cooling rating aligns with condenser size, while furnace heating doesn't use ton terminology. Ensure your installer balances both components correctly for your home's load calculations.
Can this system work with my existing ductwork and thermostat? +
Upflow configuration works with most standard residential ductwork. The variable-speed blower adapts to different duct sizes and restrictions. You'll need a compatible thermostat, ideally programmable, to unlock the two-stage burner and compressor benefits. Your installer will verify ductwork sizing and any necessary modifications.
How much will this cost to operate compared to a 95% AFUE furnace? +
At 80% AFUE, roughly 20% of your heating fuel escapes as exhaust waste. A 95% AFUE unit wastes only 5%. On an $1500 annual heating bill, expect $225 extra yearly. Over 15 years, that's $3375 in extra fuel costs, offsetting the $1000 to $1500 price premium of condensing models.
How does Goodman's reliability compare to Lennox or Carrier? +
Goodman uses proven scroll compressors and two-stage burners that match competitor designs. Long-term reliability depends more on installation quality and maintenance than brand. Goodman typically costs 15 to 25% less with similar failure rates, making it sensible for budget-conscious buyers willing to perform annual tune-ups.
What does the 10-year warranty actually cover if something breaks? +
Online registration is required. Coverage includes compressor, heat exchanger, coil, and blower motor parts plus labor. It excludes damage from improper installation, neglected maintenance, or refrigerant mishandling. Keep service records to validate warranty claims.

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