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

// Bottom Line

This Goodman system works best for cost-conscious homeowners in moderate climates who want a complete packaged solution without premium pricing. It delivers respectable 80% AFUE heating and 16 SEER cooling performance at an attractive $2,071 price point.

Review

The Goodman 4-ton gas furnace and air conditioner system positions itself as the entry point for contractors and homeowners seeking an affordable all-in-one solution. At $2,071, this SKU TX5N4 model delivers both heating and cooling in a compact upflow configuration suitable for basement or utility closet installation. Goodman maintains strong market share in the budget segment by focusing on core functionality over premium features.

Performance specs show 80,000 BTU heating output at 80% AFUE efficiency and 48,000 BTU cooling rated at 16 SEER with R410A refrigerant. The two-stage burner and two-stage scroll compressor allow part-load operation, reducing short cycling on mild days. Variable speed blower can deliver up to 2,000 CFM, adapting airflow to actual heating or cooling demand. These are solid baseline specs without the premium efficiency tiers modern systems offer.

Pros & Cons

Pros

Competitive pricing at $2,071 for a complete 4-ton system with both heating and cooling
Variable speed blower motor reduces energy waste and improves comfort consistency throughout the day
Two-stage burner and two-stage condenser allow the system to modulate output, improving efficiency on mild days
ENERGY STAR certified with 80% AFUE heating efficiency and 16 SEER cooling rating
10-year warranty with online registration provides decent long-term protection

Cons

80% AFUE is dated technology, falling below 90% minimum standards now common in many regions
16 SEER cooling efficiency is good but not exceptional compared to 18+ SEER models in this price range
74 dB noise level is moderately loud, noticeable during operation in quiet spaces

Who Should Buy

Best For

Homeowners in areas without AFUE minimums who prioritize upfront cost savings over long-term operating expenses. This works well for rental properties, secondary residences, or climates where furnace runtime is moderate.

Consider Alternatives If

Buyers in cold climates needing maximum heating efficiency or anyone planning to stay 10+ years should invest in 90%+ AFUE models to recover the price difference through energy savings.

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

$2071

Buy at HVACDirect →

Installation

Installation requires 208/230V single-phase 60Hz power with breaker sizing between 27.7 and 45 amps. The metal exhaust flue is mandatory for the gas furnace component. Standard sweat connections use 3/8 inch liquid line and 7/8 inch suction line. Height of 30 inches, width of 24.5 inches, and depth of 21 inches demand tight basement or utility space planning. Most HVAC installers handle this in a standard 4-6 hour job.

Warranty & Reliability

Goodman provides a 10-year parts warranty with online registration. This is middle-of-road coverage, matching many competitors but trailing premium brands offering 12-25 years. The warranty covers compressor, heat exchanger, and blower motor failures. Homeowners must register within 30 days of installation to unlock the full term, so documentation matters.

Specifications

SKU	TX5N4
Brand/Manufacturer	Goodman
Cooling BTU	48,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	2.500000
Feature	Spec
AHRI Certificate Number	204633307
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	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.
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	45 amps
Min. Breaker Size	27.7 amps
Tonnage	5 Ton
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil

Frequently Asked Questions

How does 80% AFUE compare to modern furnace standards? +

80% AFUE means 20% of heating fuel is lost through exhaust, outdated by current efficiency standards. Many regions now require 90%+ AFUE. Higher efficiency models cost more upfront but recover costs through lower gas bills over 15-20 years of operation.

Can this system handle both natural gas and propane? +

Yes, this furnace accepts both natural gas and propane fuel types. However, conversion requires specific burner adjustment and is not a field-switchable feature. Verify your fuel source before purchase and confirm the unit is configured for your gas type.

What does the variable speed blower actually do for me? +

The variable speed motor adjusts CFM from low to 2,000 maximum based on heating or cooling demand. This reduces energy consumption during light-load periods, improves temperature consistency room-to-room, and typically lowers monthly utility bills compared to single-speed designs.

How does this 4-ton model compare to mid-range Lennox or Carrier systems? +

Goodman costs $400-600 less than comparable Lennox or Carrier units but typically lower warranty coverage and slightly lower efficiency ratings. For budget buyers, the value proposition is strong. For long-term reliability and support, premium brands justify their premium pricing.

Do I need to register the warranty online? +

Yes. Online registration within 30 days of installation unlocks the full 10-year coverage. Without registration, warranty defaults to 5 years. Registration is free and takes 5 minutes through Goodman's website.

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