5 Ton 15.5 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system is ideal for homeowners in mild-to-moderate climates seeking reliable performance without premium pricing. The 80% AFUE furnace and 15.5 SEER cooling unit deliver respectable efficiency gains over baseline equipment, making it a smart choice for retrofits or new construction in regions without extreme temperature swings.

Review

The Goodman 5-ton system represents the practical middle ground in residential HVAC equipment. With 100,000 BTU heating capacity and 60,000 BTU cooling output, this unit handles typical single-family homes across moderate climates reliably. The combination of an 80% AFUE gas furnace paired with a 15.5 SEER air conditioner positions it as an energy-conscious upgrade from baseline equipment without venturing into premium territory. Goodman's longstanding presence in contractor networks and parts availability make this a predictable choice for homeowners seeking proven performance.

Real-world performance hinges on the two-stage design. The furnace ramps between full and partial capacity depending on outdoor temperature, reducing unnecessary run time during shoulder seasons. Similarly, the two-stage condenser modulates cooling output, keeping the compressor from cycling excessively on mild days. The variable-speed blower motor adjusts CFM between near-zero and 2,000 to match heating and cooling demand. These features combine to deliver measurable energy savings compared to single-stage equipment, though they don't match the efficiency gains found in higher-tier systems rated 90%+ AFUE and 16-18 SEER.

Pros & Cons

Pros

Two-stage burner and two-stage condenser provide modulated heating and cooling, reducing runtime and energy waste in partial-load conditions
80% AFUE furnace meets current baseline efficiency standards with 100,000 BTU output suitable for 5-ton systems
Variable-speed blower motor (up to 2,000 CFM) improves comfort and reduces electricity consumption compared to single-speed alternatives
Energy Star certified with 15.5 SEER cooling rating, qualifying for utility rebates in many regions
A-coil configuration and upflow orientation make installation straightforward in attics or basements

Cons

80% AFUE is adequate but not exceptional, missing out on high-efficiency incentives available for 90%+ AFUE units
15.5 SEER is competent but trails newer models hitting 16-18 SEER, meaning higher operating costs over 15-20 years
75 dB noise level is typical for mid-tier equipment but louder than premium models during peak operation

Who Should Buy

Best For

Homeowners in moderate climates replacing aging systems who prioritize reliability and reasonable upfront cost over cutting-edge efficiency. Contractors seeking dependable equipment for standard residential retrofits where customers want solid performance without premium pricing will appreciate Goodman's reputation and straightforward installation.

Consider Alternatives If

Buyers in severe heating climates or efficiency-conscious homes should compare high-AFUE alternatives, as 80% furnace efficiency leaves money on the table over a 20-year lifespan.

5 Ton 15.5 SEER 80% AFUE 100,000 BTU Goodman Gas F

Buy at HVACDirect →

Installation

This upflow A-coil configuration installs cleanly in attics or utility closets with minimal ductwork modifications. The 38.25-inch height and 35.5-inch width suit standard framing, and metal flue exhaust piping runs straight through sidewalls or roofs without complexity. Technicians require 208/230V single-phase service at 37.2 to 60 amps. Metal suction and liquid lines accept standard 7/8-inch and 3/8-inch sweat connections. Installation typically takes one to two days for experienced crews.

Warranty & Reliability

Goodman includes a 10-year parts warranty with online registration, protecting against manufacturing defects across the furnace, condenser, and blower assembly. This standard coverage is solid but not exceptional, as premium brands offer 10-12 year coverage on compressors and 15-year shell warranties. Registration is required to activate coverage, so homeowners must complete this promptly after installation.

Specifications

SKU	DSXC160601
Brand/Manufacturer	Goodman
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)	75
Weight (in lbs)	301.000000
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	38.25"
Width	35.5"
Depth	35.5"
Resources	Goodman Specifications You will need AdobeÂ® AcrobatÂ® 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.
Liquid Line	3/8"
Suction Line	7/8"
Tonnage	5 Ton
Style	A-Coil
Energy Star	Yes
SEER1 (Efficiency)	16
Condenser Stages	Two Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	60 amps
Min. Breaker Size	37.2 amps
Valve Type	Sweat

Frequently Asked Questions

What's the practical difference between this 15.5 SEER unit and a 16-18 SEER model? +

Over 20 years, a 16-18 SEER system can save $1,500-$3,000 in cooling costs depending on climate and usage patterns. The 15.5 SEER rating here represents solid baseline efficiency, but newer variable-refrigerant units squeeze more cooling from each compressor watt. If you stay 10-15 years, this unit recoups its cost advantage quickly.

Can this system handle downflow installation if I need it in a basement? +

Yes. The specs confirm it operates in both upflow and downflow configurations. Verify ductwork and flue routing with your installer, as downflow placement requires different return and supply paths. Basement installations need condensate drainage planned to avoid standing water issues.

How does the two-stage heating compare to single-stage for comfort? +

Two-stage heating cycles less frequently because the furnace runs at reduced capacity most of the time, preventing temperature swings. Single-stage equipment runs at full 100,000 BTU output every cycle, causing more on-off cycling. You'll notice steadier warmth and fewer temperature dips with this two-stage design, especially in mild winter months.

Is this better than Carrier or Lennox equipment at the same price point? +

Goodman and Carrier's entry-level models perform similarly at equivalent SEER and AFUE ratings. This unit's advantage lies in parts availability and contractor familiarity rather than superior engineering. Lennox typically costs more upfront but offers better long-term efficiency ratings. Choose based on local service networks.

Do I need the online registration to keep warranty coverage valid? +

Yes. Online registration is required to activate the full 10-year warranty. Without it, coverage may be limited or voided. Register immediately after installation using your serial number and purchase documentation.

Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.