3 Ton 17 SEER 98% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works best for homeowners upgrading from single-stage equipment who want measurable efficiency gains without premium pricing. The modulating furnace and two-stage condenser make it solid for mixed climates where both heating and cooling matter.

Review

This Goodman system positions itself as a practical upgrade path for homeowners tired of outdated single-stage equipment. The combination of an 80,000 BTU furnace and 35,000 BTU air conditioner addresses both seasonal demands in one package. Goodman holds a strong reputation for manufacturing reliable mid-market HVAC solutions, and this unit's Energy Star certification signals compliance with current efficiency standards. The system uses R410A refrigerant and accepts older R22 units, offering some flexibility during transitional periods.

Performance metrics justify considering this system for moderate climates. The furnace delivers 97% AFUE through a modulating burner that adjusts flame height continuously, rather than cycling on and off like basic equipment. The condenser achieved an SEER1 rating of 18, exceeding the advertised 17 SEER specification. A variable-speed ECM blower motor runs at reduced speed during partial-load conditions, cutting electrical consumption. The two-stage scroll compressor operates at 71 dB, making it quieter than single-stage units while handling peak loads when outdoor temperatures spike.

Pros & Cons

Pros

SEER1 rating of 18 beats the 17 SEER advertised, delivering better cooling efficiency than expected
97% AFUE furnace with modulating burner provides precise heating and lower gas bills year-round
Variable-speed ECM blower motor adjusts airflow based on demand, reducing energy waste
Two-stage scroll compressor operates quietly at 71 dB and extends equipment lifespan
10-year warranty with online registration covers major components against defects

Cons

Price point at $89 is suspiciously low, suggesting this may be a condenser unit price rather than complete system cost
Spec sheet lists conflicting tonnage claims (3 ton in title, 5 ton in specs), creating confusion about actual capacity
AHRI certification number provided but no matched system documentation linking furnace and coil together

Who Should Buy

Best For

Homeowners in moderate climates seeking reliable heating and cooling without paying for premium brands. Contractors who need a solid mid-range option for retrofitting older homes with separated systems.

Consider Alternatives If

Anyone in extreme hot or cold climates requiring maximum efficiency, or buyers expecting a complete turn-key system at this price point should verify what's actually included.

3 Ton 17 SEER 98% AFUE 80,000 BTU Goodman Gas Furn

$89

Buy at HVACDirect →

Installation

This upflow unit requires plastic PVC exhaust venting and connects via sweat valve fittings using 3/8-inch liquid and 7/8-inch suction lines. The 3/4-inch suction line insulation comes preinstalled. Electrical demands are manageable: 115V single-phase 60Hz service with 21.3 to 35-amp breaker sizing. Dimensions of 30 inches tall, 24.5 inches wide, and 21 inches deep fit most furnace closets. Maximum CFM output is 1,600, requiring competent ductwork design.

Warranty & Reliability

Goodman backs this system with 10 years of parts coverage upon online registration. This extended term protects against compressor failure, heat exchanger cracks, and component defects that typically show up within the first five years. Registration is straightforward and recommended immediately after installation to activate the full warranty period.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	35,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	71
Weight (in lbs)	30.000000
Feature	Spec
Product Features	Two Stage Condenser
Energy Star	Yes
SEER1 (Efficiency)	18
Condenser Stages	Two Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	35 amps
Min. Breaker Size	21.3 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	30"
Width	24.5"
Depth	21"
Resources	CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information	PROPOSITION 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 Number	7424266
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	97%
Blower Motor	Variable Speed - ECM
Maximum CFM	1600
Configuration	Upflow / Downflow
Burner Stages	Modulating
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

Does this system include both furnace and air conditioner? +

Spec sheets indicate both an 80,000 BTU furnace and 35,000 BTU condenser, but the $89 price suggests a condenser-only unit. Verify with the seller whether furnace, evaporator coil, and condenser are included or sold separately before purchasing.

Can this replace my existing 3-ton system? +

The title states 3 ton, but specifications list 5 ton tonnage. This discrepancy is critical, as oversizing causes short cycling and poor dehumidification. Contact the manufacturer with AHRI certificate number 7424266 to clarify actual capacity before installation.

How much will heating and cooling costs drop compared to my old unit? +

The 97% AFUE furnace and SEER1 18 condenser reduce consumption significantly. If upgrading from 80% AFUE and SEER 10 equipment, expect 15-20% lower winter bills and 25-30% lower summer cooling costs, depending on local utility rates and climate zone.

Is the variable-speed blower worth the extra cost? +

Yes. ECM motors use 75% less electricity than permanent split capacitor motors during partial-load operation. Over a 15-year lifespan, electricity savings typically exceed $500, plus improved comfort from consistent air delivery.

What happens after the 10-year warranty expires? +

Coverage ends, so repairs become out-of-pocket. Budget for potential compressor replacement around year 12-15. Maintenance like coil cleaning and refrigerant checks extend life beyond the warranty period.

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