5 Ton 15 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works well for homeowners in moderate climates seeking reliable cooling and heating without premium pricing. The 80% AFUE furnace and 16 SEER cooling unit deliver solid efficiency gains over older equipment, making it a smart upgrade for 2,000-3,500 sq ft homes.

Review

Goodman's 5-ton split system positions itself as a practical middle ground in the residential HVAC market. This upflow A-coil configuration handles both heating and cooling, making it suitable for 2,000 to 3,500 square foot homes. The system carries a strong reputation for durability among contractors and includes Goodman's standard 10-year warranty with online registration. At $2,053, the price point attracts homeowners seeking replacement equipment without premium features.

The cooling side delivers 60,000 BTU across a two-stage compressor with 16 SEER efficiency, which translates to roughly 10-15% lower cooling costs versus 14 SEER baseline units. The heating side produces 80,000 BTU through a two-stage burner operating at 80% AFUE using either natural gas or propane. Variable-speed blower technology maintains up to 2,000 CFM while keeping noise levels at 75 dB, making it quieter than single-stage units. R410A refrigerant is industry standard and widely supported by service technicians.

Pros & Cons

Pros

16 SEER cooling efficiency exceeds the 15 SEER rating, providing measurable energy savings over 13-14 SEER competitors
Two-stage burner and two-stage compressor reduce energy waste and improve comfort during partial-load conditions
Variable-speed blower motor runs quietly at 75 dB and delivers up to 2,000 CFM, matching diverse ductwork configurations
80% AFUE furnace is Energy Star certified and qualifies for utility rebates in many regions
Upflow/horizontal A-coil design fits tight spaces, making it ideal for retrofits in closets or attics

Cons

80% AFUE is mid-range, not high-efficiency, so fuel savings take 8-10 years to recoup versus 95%+ units
16 SEER is good but not cutting-edge, whereas newer units reach 18-20 SEER with better grid decoupling
Metal exhaust flue requirement adds installation cost compared to units supporting plastic venting

Who Should Buy

Best For

Homeowners replacing 15-year-old split systems or upgrading from single-stage equipment will see immediate comfort and efficiency gains. This is the right choice for those who value reliability and price over premium efficiency features.

Consider Alternatives If

High-efficiency seekers in heating-dominant climates should explore 95%+ AFUE modulating furnaces, and those targeting zero-energy homes should consider variable-capacity units rated 18+ SEER.

5 Ton 15 SEER 80% AFUE 80,000 BTU Goodman Gas Furn

$2053

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Installation

This system requires 208/230V single-phase 60Hz power with breaker sizing between 37.2 and 60 amps. A metal exhaust flue is mandatory for the furnace, which adds cost if existing venting won't accommodate it. Liquid and suction line sizes are 3/8 inch and 7/8 inch respectively. Most experienced HVAC installers complete this upflow configuration in 4-6 hours, though ductwork modifications may extend timelines.

Warranty & Reliability

Goodman includes a full 10-year parts warranty when you register online within 30 days of installation. This covers both the furnace and air conditioner compressor, offering genuine peace of mind against manufacturing defects. Labor warranty terms vary by installer, so confirm coverage details before signing the contract.

Specifications

SKU	TX5N4
Brand/Manufacturer	Goodman
Cooling BTU	60,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	75
Weight (in lbs)	2.500000
Feature	Spec
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	7/8"
Tonnage	5 Ton
Style	A-Coil
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.
AHRI Certificate Number	204633302
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Burner Stages	Two
Fuel Type	Propane, Natural Gas
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

Is 16 SEER actually better than the rated 15 SEER specification? +

Yes. The spec sheet lists 16 SEER, which exceeds the 15 SEER marketing name. This unit achieves real-world efficiency slightly above its rated threshold, likely due to two-stage compressor optimization. Expect roughly 10-15% lower cooling costs versus older 14 SEER equipment over a 15-year lifespan.

Can I install this in my attic if space is tight? +

Yes, the upflow A-coil design and 38.25 inch height fit most attic installations. The 3,500-pound weight requires solid structural support. You'll need 3/8 inch liquid and 7/8 inch suction lines running downward, plus a metal exhaust flue for safe operation.

What's the difference between two-stage and single-stage operation? +

Two-stage operation runs the compressor and burner at 60% capacity during mild weather, reducing energy waste and cycling. At full load, both stages activate for maximum output. This reduces temperature swings, improves comfort, and saves 8-12% versus constant on-off cycling in single-stage units.

How does this compare to Lennox or Trane equivalents at the same price? +

Goodman matches Lennox XC15 and Trane XV15 on SEER ratings and warranty length but costs $200-400 less. Trane and Lennox command premiums for brand reputation and regional dealer networks. Real-world durability is comparable across all three manufacturers.

What happens if I don't register online for the warranty? +

Goodman reverts to a five-year limited warranty on parts if you skip registration. Always register within 30 days to unlock the full 10-year coverage, as it protects your investment significantly.

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