Independent Review · Updated June 2026

3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

High-efficiency gas furnace and AC combo at an unbeatable price point

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$504
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This 3-ton Goodman system delivers legitimate efficiency gains with a 97% AFUE furnace and 18 SEER1 air conditioner for under $600. Best suited for homeowners replacing aging systems in moderate climates who prioritize operating cost savings over brand prestige.

Review

The Goodman 3-ton upflow gas furnace and air conditioner system represents strong value in the budget-to-mid-range HVAC category. At $504, this complete package positions itself as an alternative to contractor-exclusive premium brands, making it attractive to homeowners shopping online. The system carries AHRI certification (7424267) and Energy Star approval, indicating it meets established efficiency standards. Online Supply, the distributor, bundles rebate opportunities with the purchase, potentially lowering the actual cost further.

Heating performance comes from a 100,000 BTU modulating furnace rated at 97% AFUE, meaning 97 cents of every dollar spent on gas converts to usable heat. Cooling capacity reaches 35,000 BTU through a two-stage scroll compressor delivering 18 SEER1 efficiency. The variable-speed ECM blower motor runs between 0 and 2000 CFM, allowing better humidity control than fixed-speed alternatives. At 71 dB, the system operates quieter than many competitors, reducing the noise complaints often associated with older equipment.

Pros & Cons

Pros

  • 97% AFUE furnace efficiency means minimal heat loss, translating to real savings on heating bills in winter months
  • 18 SEER1 cooling efficiency (note: spec shows SEER1, not the promotional 17 SEER) with two-stage compressor for quieter operation at 71 dB
  • Modulating burner stages provide precise temperature control and reduce short-cycling wear
  • Variable-speed ECM blower motor adjusts airflow from 0 to 2000 CFM for better dehumidification and comfort
  • Complete system priced at $504 with 10-year warranty upon online registration, energy rebates available

Cons

  • SEER1 specification differs from promotional 17 SEER claim, creating potential buyer confusion about cooling efficiency
  • 3.5-ton equipment oversized for the stated 3-ton system rating, requiring precise load calculation before purchase
  • Limited brand name recognition compared to Lennox, Carrier, or Trane, though Goodman owns significant market share
  • Prop 65 warning included due to refrigerant chemicals, standard for all AC systems but worth noting for sensitive environments

Who Should Buy

Best For

Homeowners in moderate climates replacing 10+ year old furnace and AC units who need complete system replacement and value bottom-line energy savings. This system makes sense for budget-conscious buyers comfortable with online purchasing and professional installation.

Consider Alternatives If

Buyers seeking premium brand reputation, extended warranties beyond 10 years, or systems specifically sized at exactly 3 tons should explore alternatives first.

3 Ton 17 SEER 97% AFUE 100,000 BTU Goodman Gas Fur
$504
Buy at HVACDirect →

Installation

Installation requires standard upflow configuration with plastic or PVC exhaust flue on the right side. The A-coil design accommodates most existing ductwork and air handlers. Electrical needs are modest: 115V, single phase, 60Hz, with breaker range between 21.3 and 35 amps. Refrigerant lines require 3/8 inch liquid and 7/8 inch suction with 3/4 inch insulation thickness. Professional installation is strongly recommended to ensure proper charging, ductwork sealing, and system commissioning.

Warranty & Reliability

Goodman provides a 10-year parts warranty with online registration at no additional cost. This covers compressor, heat exchanger, and most major components. The coverage is transferable if you sell the home, adding slight resale value. Standard exclusions apply for improper installation, maintenance neglect, and refrigerant-related issues. Consider purchasing extended service contracts from your installer for labor coverage beyond the first year.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU100,000
RefrigerantR410A or R22
Electrical115 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)30.000000
FeatureSpec
Product FeaturesRebate Available
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
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.
AHRI Certificate Number7424267
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM2000
ConfigurationUpflow / Downflow
Flue LocationRight
Burner StagesModulating
Fuel TypePropane, Natural Gas
Liquid Line3/8"
Suction Line7/8"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Why does the listing show 17 SEER but specs list 18 SEER1? +
The promotional title references older SEER methodology. Actual specification is 18 SEER1, the current industry standard introduced in 2023. SEER1 ratings are typically 10-15% lower than legacy SEER ratings, so verify this matches your climate zone requirements before purchasing.
Can I install this system myself or do I need a contractor? +
Professional installation is essential. Refrigerant charging, ductwork sealing, and gas line connections require EPA certification and specialized tools. Improper installation voids the warranty and creates safety hazards. Budget $1,500 to $2,500 for professional installation labor.
How much will this system reduce my heating and cooling bills? +
Compared to a 13 SEER AC and 80% AFUE furnace, expect 20-30% annual savings depending on climate, usage patterns, and home insulation. In heating-dominant climates, the 97% AFUE furnace delivers the largest benefit. Your actual results depend on proper sizing and installation quality.
Is this system better than Lennox or Carrier equivalents? +
At equal efficiency ratings, no. Goodman and Lennox share similar technology and reliability. Lennox carries premium pricing for brand reputation and marketing. This Goodman system delivers nearly identical performance at roughly 40-50% lower cost, making value proposition stronger than prestige.
What does the 10-year warranty actually cover? +
Parts replacement for manufacturing defects in compressor, heat exchanger, coils, and blower motor. Does not cover labor, refrigerant, or damage from improper installation. Requires online registration within 30-60 days of purchase to activate.

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