Goodman 4 Ton 14 SEER 80% 80,000 BTU Furnace & AC System - R410A Upflow Review 2026

// Bottom Line

This Goodman combo excels for homeowners upgrading from older single-stage systems who want measurable efficiency gains without premium pricing. The 80% AFUE furnace paired with a 16 SEER2 condenser delivers genuine year-round savings, making it ideal for moderate climates where both heating and cooling see regular use.

Review

The Goodman 4-ton combo (technically rated 5-ton on the condenser) sits squarely in the workhorse category of residential HVAC. This system bundles an 80% AFUE gas furnace producing 48,000 BTU heating output with a matching 48,000 BTU air conditioner using R410A refrigerant. Online Supply's kit targets budget-conscious homeowners and contractors seeking proven equipment without boutique pricing or experimental features. The upflow configuration and compact dimensions make it flexible for most installation scenarios.

Performance-wise, the 80% AFUE furnace with single-stage burner operates at one heating level, cycling on and off to maintain setpoint. The AC side delivers 16 SEER2 efficiency through a scroll compressor running single-stage cooling, ENERGY STAR certified. The multi-speed blower supports up to 2000 CFM airflow, allowing technicians to balance comfort across different ductwork designs. At 74 dBA, noise output runs slightly elevated but remains acceptable for basements and utility rooms away from living spaces.

Pros & Cons

Pros

ENERGY STAR certified with 80% AFUE furnace efficiency, reducing heating costs compared to 78% baseline models
16 SEER2 cooling efficiency on the AC side with scroll compressor technology for quieter, more reliable operation
Multi-speed PSC blower motor allows customized airflow (up to 2000 CFM) for better comfort in variable load conditions
10-year warranty with online registration provides solid long-term protection on both furnace and evaporator coil
Compact 21x21x30 inch footprint fits tight utility closets and crawl spaces with minimal ductwork modifications

Cons

Single-stage burner and condenser limit efficiency gains in extreme weather compared to two-stage alternatives
80% AFUE is respectable but trails 90%+ condensing furnaces by 10+ percentage points on heating efficiency
74 dBA noise level puts this above quieter systems, noticeable during furnace operation in open floor plans

Who Should Buy

Best For

Homeowners in mixed climates replacing 15+ year old equipment who value balanced heating and cooling without specialty needs. Contractors standardizing on reliable, easy-to-install Goodman components for mid-market residential retrofits will appreciate the straightforward configuration.

Consider Alternatives If

Skip this if you live in extreme cold (where high-AFUE condensing furnaces pay for themselves) or premium quiet operation is non-negotiable.

Goodman 4 Ton 14 SEER 80% 80,000 BTU Furnace & AC

Buy at HVACDirect →

Installation

This upflow/horizontal configuration requires 208/230V single-phase 60Hz power and demands 26.4 to 45 amps breaker capacity. The metal exhaust flue vents from the top, needing clearance above the unit. Sweat-type refrigerant connections use 3/8 inch liquid and 1 1/8 inch suction lines with 1/2 inch insulation included for 50-foot maximum run. Installation complexity stays moderate, suitable for experienced technicians familiar with Goodman equipment.

Warranty & Reliability

Goodman provides 10 years coverage when you register online after installation. The warranty covers both furnace components and the evaporator coil, addressing the two most common failure points. Registration is straightforward but required, so retain your purchase documentation. This duration matches mid-tier competitor offerings from Carrier and Lennox at similar price tiers.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	48,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	48.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Multi Speed - PSC
Maximum CFM	2000
Configuration	Upflow / Downflow
Flue Location	Top
Burner Stages	Single
Fuel Type	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.
Product Features	Rebate Available
Energy Star	Yes
SEER1 (Efficiency)	16
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	45 amps
Min. Breaker Size	26.4 amps
Tonnage	5 Ton
Valve Type	Sweat
Liquid Line	3/8"
Suction Line	1 1/8"
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

Why is the tonnage listed as both 4-ton and 5-ton on this system? +

The furnace section is 4-ton (80,000 BTU total, 48,000 heating output), while the condenser is rated 5-ton. This slight mismatch is common in bundled sales and doesn't harm performance, though ideal pairing uses matched tonnage across components for maximum efficiency.

Can this furnace vent through a PVC pipe like modern condensing furnaces? +

No. At 80% AFUE, this unit requires metal exhaust flue venting per specs. Only 90%+ AFUE condensing furnaces can safely use PVC. This is a key limitation if your installation needs PVC sidewall venting.

How does 16 SEER2 compare to current high-efficiency air conditioners? +

16 SEER2 is solid mid-range, roughly equivalent to 19-20 SEER. Top-tier systems reach 22+ SEER2. For moderate climates, 16 SEER2 delivers 20-30% better cooling efficiency than 10-year-old units, with payback typically under seven years.

Is this better than keeping my old system and just replacing the condenser? +

Not necessarily. If your furnace runs reliably and you only need cooling upgrades, a standalone 16 SEER2 condenser costs less upfront. However, matching new furnace and AC ensures warranty coverage and prevents mixed-age component failures.

What happens if I don't register for warranty within 30 days? +

Goodman typically defaults to the base warranty period without online registration. Contact the manufacturer immediately after purchase to clarify your specific registration deadline and process.

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