Independent Review · Updated June 2026

5 Ton 15 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

High-efficiency gas furnace with variable-speed blower and modulating burner for precise comfort

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
5 Ton 15 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
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// Bottom Line
This Goodman system excels for homeowners upgrading older furnaces who want measurable efficiency gains without premium pricing. The 97% AFUE rating and modulating burner make it ideal for variable heating demand climates where fuel savings compound over years.

Review

The Goodman 5-ton system with SKU CAPT4961C4 sits in the sweet spot between budget basics and high-end equipment. It delivers genuine efficiency improvements over decade-old furnaces without the complexity or cost of fully variable systems. At 100,000 BTU heating input and 57,000 BTU cooling capacity, it handles moderate-sized homes (2,000-2,500 sq ft) predictably. Goodman's straightforward engineering appeals to contractors who value serviceability over exotic materials.

The 97% AFUE rating means nearly all fuel energy converts to heat, versus 80% for older units. That difference translates to roughly 17% annual heating cost reduction in cold climates. The modulating burner fires at partial capacity during mild weather rather than cycling on/off, cutting standby losses. The variable-speed ECM blower adapts to ductwork resistance, avoiding the constant max-speed approach of single-speed motors. The 18 SEER2 cooling efficiency with two-stage compression handles humidity without overshooting thermostat setpoints.

Pros & Cons

Pros

  • 97% AFUE heating efficiency with modulating burner stages for reduced short-cycling and lower natural gas bills
  • Variable-speed ECM blower motor adjusts to actual heating/cooling demand, improving comfort and reducing electricity use
  • 18 SEER2 cooling efficiency on the AC side with two-stage scroll compressor for quieter operation
  • PVC/plastic exhaust flue compatible, simplifying ductwork retrofits compared to steel flue systems
  • 10-year warranty with online registration covers parts and labor at major repair shops

Cons

  • Not Energy Star certified, missing that third-party efficiency validation some contractors require
  • 74 dBA noise level is slightly above whisper-quiet standards, noticeable during blower operation in quiet homes
  • Two-stage cooling (not variable-capacity) means less granular temperature control than modulating AC systems

Who Should Buy

Best For

Homeowners in moderate climates replacing 80-85% AFUE furnaces who want clear ROI from efficiency upgrades. Contractors building mixed-income communities where reliability matters more than premium features.

Consider Alternatives If

Buyers seeking ultra-quiet operation or those requiring single-digit noise levels should explore premium variable-capacity systems instead.

5 Ton 15 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
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Installation

This upflow configuration fits standard basement return-air closets or utility rooms with 30-inch height clearance. The 208/230V single-phase electrical requirement needs a dedicated 40-60 amp breaker, standard in most homes built after 1985. PVC flue exhaust simplifies venting, reducing installation time versus metal flues. Professionals typically complete install in 4-6 hours for replacement work, assuming existing ductwork alignment.

Warranty & Reliability

Goodman backs this unit with a full 10-year parts and labor warranty when registered online within 30 days of installation. Registration is straightforward through Goodman's website. This covers compressor failure, heat exchanger cracks, and blower motor defects. Major HVAC chains and local contractors honor this warranty nationally, though transferability to second owners varies by region.

Specifications

SKUCAPT4961C4
Brand/ManufacturerGoodman
Cooling BTU57,000
Heating BTU100,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)74
Weight (in lbs)73.000000
FeatureSpec
AHRI Certificate Number7424267
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Product FeaturesRebate Available
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Flue LocationRight
Energy StarNo
Burner StagesModulating
Fuel TypePropane, Natural Gas
Height30"
Width21"
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.
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
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil

Frequently Asked Questions

What's the actual difference between this 18 SEER2 unit and a 15 SEER model? +
SEER2 uses updated test conditions reflecting real-world temperature swings. This 18 SEER2 roughly equals a 22 SEER under old standards. You'll see 8-12% annual cooling savings versus 15 SEER equipment, meaningful over 15-year lifespan in hot climates.
Can I install this in a horizontal/downflow configuration? +
Yes. The specs list upflow/horizontal configuration, and Goodman's technical documentation confirms downflow capability with proper drain installation. Your installer must verify ducting arrangement and confirm with the AHRI certificate number 7424267 for your specific setup.
How much will this save on heating costs compared to my 20-year-old furnace? +
Older furnaces run 75-80% AFUE. At 97% AFUE, you save roughly 17-22% on heating energy annually. For a $1,200 winter heating bill, expect $200-260 savings yearly. Payback depends on equipment price and local gas rates, typically 6-10 years.
Is this better than Carrier or Lennox equipment at the same price point? +
Goodman offers superior efficiency ratings at lower cost, with equivalent reliability records. Carrier and Lennox add brand premium ($500-1,200 more) without measurable performance gains. Choose Goodman for ROI focus, Carrier for dealer network loyalty.
What happens if I don't register the warranty online? +
Warranty drops from 10 years to 1-5 years depending on component. Registration takes five minutes online and protects your investment across the full decade, so do it immediately after install.

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