3 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system is ideal for homeowners replacing an older furnace and AC unit without breaking the bank. The 16 SEER cooling efficiency and 80% AFUE heating offer genuine energy savings, and the 10-year warranty with registration provides solid peace of mind for budget-conscious buyers.

Review

The Goodman 3-ton upflow system at $2,142 sits squarely in the sweet spot of the residential HVAC market. This is not a budget basement model, nor is it a premium high-efficiency unit. Instead, it delivers practical performance for homeowners replacing 15 to 20-year-old equipment. The SKU TX3N4 carries an AHRI certificate number 204633302, confirming it meets real-world performance ratings. With ENERGY STAR certification and a proven track record across North America, this unit represents a balanced choice.

Performance numbers tell the real story. The furnace delivers 80,000 BTU of heating capacity at 80% AFUE efficiency, while the air conditioner produces 36,000 BTU (3 ton) with a 16 SEER rating. The two-stage scroll compressor and dual-stage burner allow the system to run at partial capacity during mild weather, reducing cycling and extending component life. Maximum airflow reaches 2,000 CFM through the variable-speed blower, and the unit operates at 70.4 decibels, which is average for this class. The system uses R410A refrigerant with standard 3/8-inch liquid and 7/8-inch suction lines.

Pros & Cons

Pros

16 SEER cooling efficiency qualifies for ENERGY STAR certification, cutting AC costs compared to older units
Two-stage compressor and two-stage burner allow modulated operation, improving comfort and reducing energy waste
Variable-speed blower motor delivers up to 2000 CFM with better temperature consistency than single-speed alternatives
Compact footprint of 30 inches tall by 21 inches wide fits most basements and utility closets without renovation
10-year comprehensive warranty with online registration covers parts and compressor, typical for this price range

Cons

80% AFUE heating efficiency is decent but not exceptional, compared to 95%+ AFUE high-efficiency models
Two-stage operation still cannot match modulating furnaces for comfort consistency in very cold climates
No smart thermostat integration or Wi-Fi capability limits remote monitoring and optimization features

Who Should Buy

Best For

Homeowners with a moderate climate and average-sized homes (3-4 ton range) who need a reliable replacement system without premium pricing. This is also a good fit for rental properties where upfront cost matters more than cutting-edge efficiency.

Consider Alternatives If

Those in extreme climates seeking maximum efficiency should explore 95+ AFUE furnaces, and buyers wanting smart home control should look for systems with integrated connectivity.

3 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furn

$2142

Buy at HVACDirect →

Installation

Installation requires 208/230V single-phase 60Hz power with a breaker between 21.8 and 35 amps. The upflow configuration works for basements and closets, while the A-coil design pairs cleanly with most ductwork layouts. Metal exhaust flue is mandatory for the furnace. Most qualified HVAC contractors complete installation in 4 to 6 hours, though ductwork modifications may add time and cost depending on existing infrastructure.

Warranty & Reliability

Goodman backs this unit with a 10-year parts and compressor warranty upon online registration. This is the industry standard for mid-tier systems and covers manufacturing defects but not maintenance, wear, or improper installation. Labor is not included, so factoring in service call costs for any warranty claim remains important. Registration is straightforward and recommended immediately after installation.

Specifications

SKU	TX3N4
Brand/Manufacturer	Goodman
Cooling BTU	36,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	70.4
Weight (in lbs)	2.500000
Feature	Spec
AHRI Certificate Number	204633302
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	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.
Energy Star	Yes
SEER1 (Efficiency)	16
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	21.8 amps
Tonnage	5 Ton
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil

Frequently Asked Questions

How does the 16 SEER rating translate to real monthly cooling costs? +

A 16 SEER unit is roughly 30-40% more efficient than a 10 SEER unit from the early 2000s. On a typical 3-ton system running 500 hours during cooling season, expect $30 to $50 monthly savings versus older equipment. Regional electricity costs and actual usage patterns affect exact figures significantly.

Can this system work with my existing ductwork from a 1990s furnace? +

Possibly, but inspection is critical. Ductwork from that era often has sealing issues and improper sizing. The variable-speed blower adapts to imperfect ducts better than single-speed motors, but leaking ducts waste 15-30% of conditioned air regardless of system efficiency.

Is 80% AFUE heating efficient enough for northern climates? +

Eighty percent AFUE is adequate for moderate climates but suboptimal for sustained sub-zero temperatures. In Minnesota or Canada, a 95% AFUE unit reduces heating bills by 15-20% versus this model. This unit remains practical for mixed climates where heating and cooling are both significant expenses.

How does this compare to higher-priced Goodman or competitor systems? +

This model lacks modulating capability and smart controls found in $3,500-plus units. However, it delivers 90% of the efficiency at 60% of the cost. For most homeowners, the payback period on premium features exceeds the system lifespan of 15-20 years.

What happens if something fails in year five? +

The 10-year warranty covers parts and compressor replacement at no parts cost. However, labor and service calls are the homeowner's responsibility, typically $150-$300 per visit. Extended labor warranties are available separately through most contractors.

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