Independent Review · Updated June 2026

3 Ton 16 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow

Premium efficiency split system at budget pricing, with real trade-offs to consider

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
3 Ton 16 SEER 97% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow
Current Price
$736
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This system works best for homeowners replacing aging equipment who prioritize heating efficiency and can handle a modulating gas furnace's operational quirks. The 97% AFUE and 18 SEER2 specs deliver measurable energy savings, but the $736 price point suggests this is likely a coil-only or specialized component sale rather than a complete installed system.

Review

Goodman's 3 Ton 16 SEER 97% AFUE system represents the efficiency-conscious contractor's middle ground. Online Supply lists this at $736, positioning it as an accessible option against premium brands like Carrier or Lennox. However, the actual tonnage sits at 3.5 tons according to specs, and the low price suggests this may be a coil-only or compressor-specific component rather than a fully installed split system. The product earned AHRI Certificate Number 7424265, confirming matched pair testing and real-world performance validation.

Performance numbers tell the real story. The furnace delivers 80,000 BTU heating with a modulating burner and 97% AFUE, meaning nearly every dollar of gas becomes usable heat. The AC side produces 35,000 BTU cooling with an 18 SEER2 rating and two-stage scroll compressor, both solid specs for residential applications. A variable-speed ECM blower motor delivers up to 1200 CFM at just 71 dB, balancing efficiency with comfort. Energy Star certification confirms compliance, though buyers should note the refrigerant flexibility between R410A and R22 reflects older design standards.

Pros & Cons

Pros

  • Exceptional heating efficiency at 97% AFUE with modulating burner stages for precise temperature control
  • Strong cooling performance with 18 SEER2 rating and two-stage compressor, well above Energy Star minimums
  • Variable-speed ECM blower motor delivers up to 1200 CFM with quieter operation at 71 dB
  • Modulating burner reduces short-cycling and improves comfort during partial-load conditions
  • PVC exhaust compatibility simplifies retrofit installations in homes with plastic venting already installed
  • 10-year warranty with online registration provides reasonable coverage for parts and labor

Cons

  • 3.5-ton rating creates mismatch with advertised 3-ton capacity, potential oversizing for smaller homes
  • Price point of $736 appears incomplete, likely missing installation labor, ductwork, electrical work, and system balancing costs
  • Refrigerant flexibility between R410A and R22 indicates older design, R22 phase-out makes this a future serviceability concern
  • No mention of zoning capability or smart thermostat integration in available specifications
  • Requires 115V single-phase electrical service with 21.3 to 35-amp breaker sizing, confirming non-standard installation requirements

Who Should Buy

Best For

Contractors and homeowners replacing 10-to-15-year-old furnace-AC splits who want best-in-class heating efficiency without premium brand pricing. Ideal for climates where heating season dominance justifies the 97% AFUE investment and existing ductwork can accommodate the 1200 CFM maximum airflow.

Consider Alternatives If

Anyone expecting a plug-and-play system at this price, homes with inadequate electrical service, or buyers needing a single integrated unit from a major OEM with nationwide warranty support.

3 Ton 16 SEER 97% AFUE 80,000 BTU Goodman Gas Furn
$736
Buy at HVACDirect →

Installation

This system requires PVC plastic exhaust venting, standard in modern homes but worth verifying if retrofitting older installations. Electrical demands include 115V single-phase 60Hz service with breaker sizing between 21.3 and 35 amps. Suction line insulation thickness of 3/4 inch over 50 feet of maximum line length needs careful sizing and routing to prevent refrigerant loss. Professional HVAC installation is essential, not optional, due to EPA refrigerant handling regulations and system commissioning requirements.

Warranty & Reliability

Online Supply provides a 10-year parts warranty with online registration, standard industry coverage. This covers defects in materials and workmanship but excludes damage from improper installation, maintenance neglect, or unauthorized repairs. Activation requires completing registration after purchase, so document all paperwork. Warranty is non-transferable if you sell the home, limiting long-term asset value. Check whether local contractors honor this warranty for service calls.

Specifications

SKULS38783850
Brand/ManufacturerOnline Supply
Cooling BTU35,000
Heating BTU80,000
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"
Width21"
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 Number7424265
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementPlastic / PVC
Furnace Efficiency / AFUE97%
Blower MotorVariable Speed - ECM
Maximum CFM1200
ConfigurationUpflow / Downflow
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 spec sheet say 3 tons in the title but 3.5 tons in tonnage? +
The 3.5-ton tonnage reflects actual cooling capacity at standard rating conditions. The 3-ton designation likely references the furnace side or a nominal sizing category. Always use the 3.5-ton spec for load calculations and ductwork design to ensure proper airflow and efficiency.
Can I install this myself or do I need a contractor? +
EPA regulations require EPA 608 certification for any refrigerant handling, making DIY installation illegal without proper licensing. Electrical connections, gas line sizing, and system charging demand professional expertise. Budget $2,000 to $4,000 for complete installation labor depending on your region.
How much will this save me compared to a 13 SEER system? +
The 18 SEER2 rating delivers approximately 30 percent better cooling efficiency than 13 SEER equipment. On a $1,200 annual cooling bill, expect $360 to $450 in annual savings. The 97% AFUE furnace saves another 10 to 15 percent on heating versus typical 80-85% equipment, depending on climate.
Is Online Supply a reputable HVAC equipment seller? +
Online Supply specializes in wholesale HVAC components for contractors. Pricing is significantly lower than retail because installation, commissioning, and tech support are your contractor's responsibility. Verify they handle warranty claims before purchasing.
What happens if something breaks during the 10-year warranty? +
Online Supply's warranty covers parts replacement. You pay labor and refrigerant recharging costs. Check your contractor's service agreement, as many offer extended labor coverage separately. Warranty excludes seasonal maintenance and normal wear items like filters and capacitors.

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