Independent Review · Updated June 2026

5 Ton 16 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow

Solid 5-ton combo system with 96% AFUE heating and 18 SEER2 cooling at mid-market pricing.

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 16 SEER 96% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Downflow
Current Price
$3136
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system is ideal for homeowners replacing older furnace-AC combos in moderate climates who want solid efficiency without premium pricing. The 96% AFUE furnace and 18 SEER2 condenser deliver meaningful utility savings, making the $3,136 price point reasonable for a matched pair from a reliable manufacturer.

Review

The Goodman CAPT4961D4 is a traditional matched-pair HVAC system combining a gas furnace and air conditioning condenser, positioned as a budget-conscious choice for homeowners tired of high utility bills. At $3,136, it undercuts premium brands like Trane and Carrier while delivering respectable efficiency ratings. This downflow configuration suits basements and cramped mechanical spaces where standard upflow units create installation headaches. Goodman's reputation for durability, though not luxury, makes this system familiar to HVAC contractors nationwide.

Performance-wise, the furnace's 96% AFUE rating and 120,000 BTU output handle most single-family homes efficiently, while the 5-ton condenser delivers 57,000 BTU cooling capacity with an 18 SEER2 rating (converted from 16 SEER1 spec). The two-stage compressor runs at lower capacity most of the year, keeping the system quiet at 74 dB. Variable-speed ECM blower adapts to load conditions, maximizing comfort during temperature swings. This combination avoids the extremes of cheap single-stage units and high-cost modulating systems.

Pros & Cons

Pros

  • 96% AFUE furnace efficiency with two-stage burners reduces heating costs significantly compared to 80-90% units
  • 18 SEER2 cooling rating (converted from 16 SEER1) means lower summer electricity bills than single-stage competitors
  • Variable-speed ECM blower motor adjusts airflow intelligently, improving comfort and reducing runtime waste
  • Two-stage compressor provides quiet operation at 74 dB during partial-load cooling cycles
  • 10-year warranty with online registration protects your investment adequately for this price tier
  • Downflow/horizontal configuration works in tight basement or attic spaces where upflow units won't fit

Cons

  • Requires 36.7 to 60 amp electrical service, meaning older homes may need panel upgrade ($500-1,500 additional cost)
  • PVC exhaust flue requirement limits installation flexibility in homes with masonry chimneys
  • Two-stage operation means less modulation than variable-capacity systems, slightly less efficient in mild weather

Who Should Buy

Best For

Homeowners in HVAC zones 4-6 replacing 10+ year old furnace-AC combos with electrical service already at 40+ amps. This system suits homes 2,000-3,500 square feet needing balanced heating and cooling performance without paying for premium inverter-driven equipment.

Consider Alternatives If

Anyone in extreme climates, homes with masonry chimneys, or buyers with electrical panels under 40 amps should evaluate alternatives or budget for electrical upgrades.

5 Ton 16 SEER 96% AFUE 120,000 BTU Goodman Gas Fur
$3136
Buy at HVACDirect →

Installation

Installation requires 115V single-phase 60Hz power with 36.7-60 amp breaker capacity, so pre-installation electrical inspection is mandatory. Downflow orientation demands horizontal ductwork layout and sloped condensate drain installation. PVC exhaust flue is non-negotiable and must run to exterior wall or roof. Most contractors complete installation in 8-10 hours, assuming existing ductwork and electrical are code-ready.

Warranty & Reliability

Goodman backs this system with a full 10-year parts warranty when you register online within 60 days. Coverage includes compressor, furnace heat exchanger, and refrigerant. This matches industry midpoint; budget systems offer 5 years while premium brands often include 10-year compressor-only plans. Registration is straightforward and essential for claim protection.

Specifications

SKUCAPT4961D4
Brand/ManufacturerGoodman
Cooling BTU57,000
Heating BTU120,000
RefrigerantR410A
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
Weight (in lbs)76.000000
FeatureSpec
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size7/8"
Max Breaker Size60 amps
Min. Breaker Size36.7 amps
Tonnage5 Ton
Valve TypeSweat
Height30"
Width24.5"
Depth21"
ResourcesCAPT Installation Manual CAPT 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.
AHRI Certificate Number7368845
Airflow DirectionDownflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE96%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Burner StagesTwo
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

How does 16 SEER1 compare to modern SEER2 ratings? +
SEER2 is a stricter test standard, so 16 SEER1 converts to approximately 18 SEER2. This places it above mid-tier units but below inverter-driven models at 20+ SEER2. Real-world cooling costs drop roughly 15-20% versus 14 SEER systems in moderate climates.
Will this fit my basement if ductwork runs horizontally? +
Yes, the downflow configuration with 30-inch height and 24.5-inch width fits standard basement mechanical rooms. Horizontal ductwork requires properly sloped supply and return lines to avoid condensation pooling and duct sagging over time.
What's the practical heating efficiency of 96% AFUE? +
96% AFUE means 96% of fuel converts to usable heat versus 80% in older units. On $1,200 annual heating bills, you save roughly $240-300 yearly compared to 80% systems, recouping roughly $800-1,000 of system cost over a decade.
How does Goodman's two-stage compressor compare to variable-capacity competitors? +
Two-stage runs at roughly 50% or 100% capacity, while variable systems modulate continuously. Goodman's approach saves money upfront but uses slightly more electricity during mild weather. Real difference is 2-5% efficiency, making it smart for moderate climates but less ideal in extreme heat or cold zones.
Do I need online registration for the 10-year warranty? +
Yes, registration within 60 days of installation is mandatory. Skip this and coverage drops to 5 years. Goodman's online portal is fast and required documentation includes serial numbers and installation photos or proof of purchase.

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