5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman 5-ton system works well for homeowners replacing older equipment or budget-conscious buyers who want reliable heating and cooling without premium pricing. The 80% AFUE furnace and 13 SEER air conditioner deliver adequate efficiency for moderate climates, while the upflow/downflow flexibility and variable-speed blower make installation straightforward in most homes.

Review

The Goodman 5-ton gas furnace and air conditioner system occupies a practical middle ground in the residential HVAC market. With 100,000 BTU heating capacity, 60,000 BTU cooling, and upflow/downflow configuration flexibility, this system serves contractors and homeowners seeking dependable performance without premium features. The variable-speed blower motor and 2-stage burner indicate engineering beyond the absolute budget tier, while the 80% AFUE and 13 SEER ratings place it squarely in the mid-efficiency category.

Performance numbers tell a straightforward story. The furnace delivers 100,000 BTU at 80% AFUE, meaning roughly 80,000 BTU reaches your home while 20,000 BTU exits through the flue. The air conditioner provides 60,000 BTU (5 tons) cooling at 13 SEER, translating to moderate seasonal efficiency. The variable-speed blower adjusts airflow between 0-2,000 CFM to match heating and cooling demand, reducing the constant-run energy waste of older single-speed motors. Two burner stages and a reciprocating compressor provide reasonable part-load efficiency for spring and fall weather.

Pros & Cons

Pros

Variable-speed blower motor improves comfort and reduces energy waste compared to single-speed alternatives
80% AFUE furnace with 2-stage burner provides better heating modulation than single-stage units
13 SEER cooling efficiency meets baseline Energy Star thresholds in most regions
Upflow and downflow configuration options simplify installation in attics, basements, or closets
Compact 21x21x30 inch footprint fits tight equipment spaces without special modifications
10-year warranty with online registration covers both heating and cooling components

Cons

80% AFUE is mid-tier efficiency, not competitive against 95%+ high-efficiency units for long-term savings
13 SEER is adequate but lags newer 16-18 SEER models, meaning higher cooling costs in hot climates
Single-stage condenser limits efficiency at partial loads during mild weather operation
77 dB noise level is moderately loud, noticeable during operation near living spaces

Who Should Buy

Best For

Homeowners in mixed or moderate climates replacing 15-20 year old systems, and contractors stocking reliable mid-range equipment for rental properties or budget-conscious clients. This unit balances upfront cost with acceptable efficiency for 10-15 year ownership periods.

Consider Alternatives If

Buyers in very hot climates seeking minimum operating costs, or homeowners planning to stay 20+ years who can justify higher upfront costs for 95%+ AFUE and 18+ SEER equipment.

5 Ton 13 SEER 80% AFUE 100,000 BTU Goodman Gas Fur

Buy at HVACDirect →

Installation

Installation requires 208/230V single-phase 60Hz power, with minimum 32.8 amp and maximum 45 amp breaker sizing. The unit accepts propane or natural gas with a metal flue requirement. The A-coil style allows both upflow and downflow orientation in 21x21x30 inch spaces. Refrigerant lines use 3/8 inch liquid and 7/8 inch suction copper with 3/8 inch insulation thickness, requiring standard HVAC tools and techniques. Most experienced contractors complete installation in 4-6 hours.

Warranty & Reliability

Goodman backs this system with a 10-year warranty on parts when registered online. This covers the furnace, condenser unit, and evaporator coil defects but excludes normal wear, misuse, and improper installation. Registration is straightforward and extends coverage beyond the standard 5-year unregistered period. This warranty length is standard for mid-tier Goodman equipment and provides reasonable protection for residential use.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	60,000
Heating BTU	100,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	77
Weight (in lbs)	30.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Height	30"
Width	21"
Depth	21"
Resources	CAPT Installation Manual CAPT 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.
Replaces	GSX130603, GSX130604, GSX130605, GSX130611, GSX130613, GSX130614
Energy Star	No
SEER1 (Efficiency)	13
Condenser Stages	Single Stage
Compressor Type	Reciprocating
Liquid Line	3/8"
Suction Line	7/8"
Liquid Valve Size	3/8"
Max Breaker Size	45 amps
Min. Breaker Size	32.8 amps
Tonnage	5 Ton
Valve Type	Sweat
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

What does 80% AFUE actually mean for my heating bills? +

Of every dollar spent on gas, 80 cents converts to heat reaching your home. The other 20 cents escapes through the flue. Modern 95% AFUE units waste only 5 cents per dollar. Over 10 years in a cold climate, upgrading costs more upfront but saves 1,500-2,500 dollars in gas. For moderate climates, this 80% unit works adequately for budget-conscious buyers.

Can I install this in my basement with upflow orientation? +

Yes, this unit supports both upflow and downflow configurations. Upflow works well in basements with ductwork running overhead. Check clearance above the 30-inch height and ensure adequate space around sides for air intake. The 21x21 inch footprint fits standard basement equipment closets. Verify your chimney or vent pipe can handle the metal flue requirement.

How does 13 SEER compare to newer air conditioners? +

13 SEER is adequate for mixed and moderate climates but lags behind current 16-18 SEER models. In hot climates, a 16 SEER unit reduces cooling costs 20-25% over the 13 SEER. The single-stage compressor here can't modulate capacity on mild 65-75 degree days, running at full power and wasting energy. Better for spring/fall-friendly climates.

Why choose this over a high-efficiency 95% AFUE unit? +

Upfront cost difference is typically 1,200-2,000 dollars. This system recovers that premium only after 12-15 years in cold climates or never in mild ones. For rental properties, short ownership periods, or budget constraints, the mid-efficiency trade-off makes financial sense. Long-term homeowners in harsh winters benefit from high-efficiency upgrades.

Is the 10-year warranty worth the online registration hassle? +

Yes. Registration takes 5 minutes and doubles standard coverage from 5 years to 10 years, protecting against compressor or heat exchanger failure during the critical first decade. Without registration, you lose half the warranty period on 5,000-dollar component repairs. Registration is straightforward through Goodman's website.

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