4 Ton 14 SEER 92% AFUE 120,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This 4-ton Goodman system works best for homeowners in moderate climates seeking dependable heating and cooling without premium pricing. It delivers respectable efficiency ratings (14 SEER, 92% AFUE) and a 10-year warranty that rewards registered users, making it a practical choice for replacement jobs or new construction.

Review

Goodman's 4-ton gas furnace and air conditioner system targets the middle market, where homeowners want proven reliability without premium pricing. This horizontal configuration suits attic or basement installations where space is limited. The combination of 14 SEER cooling and 92% AFUE heating places it solidly above minimum federal standards while remaining accessible to cost-conscious buyers. Online Supply distributes this SKU (LS38783830) with comprehensive documentation and a registered warranty program.

Performance specs show 48,000 BTU cooling capacity and 120,000 BTU heating output, appropriately sized for 4-ton residential applications. The 14 SEER rating reflects efficient cooling operation, though it's not cutting-edge compared to 16+ SEER competitors. The scroll compressor handles single-stage operation reliably, running at full output when needed. Multi-speed blower technology maxes out at 2,000 CFM, allowing the system to modulate for quieter operation and better dehumidification on partial-load days.

Pros & Cons

Pros

14 SEER cooling efficiency exceeds minimum standards, reducing summer energy costs noticeably
92% AFUE furnace rating means 92 cents of every heating dollar converts to usable heat
Scroll compressor is proven technology with strong reliability track record in residential applications
Multi-speed blower motor allows system to run at partial capacity for quieter operation and better humidity control
10-year warranty with online registration provides solid peace of mind for homeowners

Cons

Single-stage compressor and single-stage burner mean the system runs at full capacity whenever active, less efficient than two-stage alternatives
74 dB noise level is moderately loud for an outdoor unit, noticeable in quiet residential settings
Not Energy Star certified, suggesting it misses efficiency thresholds set by federal standards

Who Should Buy

Best For

Homeowners replacing an aging system in moderate climates who want balanced heating and cooling without paying for premium two-stage equipment. Contractors installing budget-conscious replacement systems for residential customers will appreciate the straightforward horizontal configuration and reliable Goodman nameplate.

Consider Alternatives If

Anyone in extremely hot climates requiring maximum cooling efficiency or seeking variable-capacity systems should look at two-stage or inverter-driven alternatives instead.

4 Ton 14 SEER 92% AFUE 120,000 BTU Goodman Gas Fur

Buy at HVACDirect →

Installation

This horizontal unit requires standard 115V single-phase 60Hz service with breaker sizing between 26.4 and 45 amps. Dimensions of 34.5 inches tall by 24.5 inches wide by 28.75 inches deep fit most attic or basement locations. Refrigerant lines use 3/8-inch liquid and 7/8-inch suction connections with 3/8-inch insulation thickness. Plastic or PVC exhaust flue is required, with the flue exiting on the right side.

Warranty & Reliability

Goodman provides a 10-year parts warranty when you register online, which is standard for major components including the compressor and heat exchanger. This warranty covers manufacturing defects but not labor, installation errors, or maintenance-related failures. Registration is straightforward and extends protection significantly compared to non-registered coverage.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	48,000
Heating BTU	120,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	74
Weight (in lbs)	30.000000
Feature	Spec
Energy Star	No
SEER1 (Efficiency)	14
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
Height	34.5"
Width	24.5"
Depth	28.75"
Resources	Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman Warranty 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.
Configuration	Upflow/Horizontal
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	92%
Blower Motor	Multi Speed
Maximum CFM	2000
Flue Location	Right
Burner Stages	Single
Fuel Type	Gas
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does 14 SEER compare to other residential air conditioners? +

14 SEER exceeds the 13 SEER federal minimum and works well for most climates, but two-stage systems often reach 16+ SEER. You'll save noticeably on cooling costs versus older 10 SEER units, though premium alternatives offer 15-20% better efficiency at higher upfront cost.

Can I install this horizontally in an attic with limited headroom? +

Yes, the horizontal A-coil configuration is designed for this. At 34.5 inches tall and 30 pounds, it fits most attics. Ensure adequate airflow around the unit and proper support, and verify your ductwork can handle the 2,000 CFM maximum airflow capacity.

Will 92% AFUE heating efficiency reduce my gas bill significantly? +

92% AFUE means you'll convert 92 cents of each gas dollar into usable heat. Compared to 80% AFUE systems, you'll see roughly 15% heating cost reduction. Upgrading to 95%+ AFUE gives another 3-5% savings, but 92% is solid for most budgets.

What's the difference between this single-stage system and two-stage alternatives? +

Single-stage runs at full capacity whenever active, consuming maximum energy. Two-stage systems run at 70% capacity most of the time, then full capacity on demand, reducing wear and energy use. Two-stage costs more upfront but offers 10-15% better seasonal efficiency.

Does the 10-year warranty cover parts and labor? +

The 10-year warranty covers defective parts when registered, but not labor or installation costs. You pay for technician visits and repairs out of pocket, though parts replacement is covered during the warranty period.

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