3 Ton 15 SEER 96% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system excels for homeowners in moderate climates seeking dual heating and cooling efficiency without premium pricing. The 96% AFUE furnace paired with 16 SEER conditioning makes it ideal for replacing older split systems or handling both seasonal demands cost-effectively.

Review

Goodman's combined gas furnace and air conditioner system represents a practical, mid-range solution for homeowners replacing aged equipment or adding climate control to previously unducted spaces. This 3-ton upflow configuration ships with a 10-year parts warranty and Energy Star certification, positioning it as a reliable choice for residential contractors seeking balance between performance and customer budget constraints.

Performance specs show the furnace delivers 100,000 BTU input at 96% AFUE efficiency, while the condenser unit handles 34,800 BTU cooling output with 16 SEER1 rating. The variable-speed ECM blower motor reaches 2,000 CFM maximum airflow and operates at 73.5 dB, noticeably quieter than fixed-speed alternatives. Two-stage burner modulation on the furnace side reduces short-cycling during partial-load conditions common in spring and fall months.

Pros & Cons

Pros

96% AFUE furnace rating means 96 cents of every dollar spent on heating reaches your home, not the chimney
16 SEER1 condenser significantly outperforms baseline 13 SEER units, reducing summer cooling costs by roughly 20 percent
Variable-speed ECM blower motor adjusts airflow dynamically, improving comfort and reducing runtime noise below 74 dB
Two-stage burner on furnace provides modulating heat output, cutting energy waste during mild winter days
Energy Star certified system qualifies for utility rebates in most regions, offsetting upfront installation cost

Cons

Single-stage compressor in AC unit limits efficiency gains compared to two-stage options in premium Goodman models
Spec sheet shows conflicting tonnage information (header claims 3-ton but specs list 5-ton), creating confusion about actual capacity
R410A and R22 refrigerant compatibility noted but not clearly stated which refrigerant is actually installed at manufacture

Who Should Buy

Best For

Contractors installing replacement systems for homes with 2,500 to 3,500 square feet needing both heating and cooling upgrades. Homeowners in heating-dominant climates will particularly appreciate the 96% AFUE furnace efficiency and variable-speed blower.

Consider Alternatives If

Skip this unit if you need a pure air conditioning solution or live in a cooling-dominated climate where a higher-SEER compressor stage would deliver better ROI.

3 Ton 15 SEER 96% AFUE 100,000 BTU Goodman Gas Fur

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Installation

This upflow unit requires standard sheet metal ductwork compatible with 2,000 CFM maximum airflow. The system needs plastic or PVC venting for exhaust flue, eliminating costly masonry modifications. Electrical demands are modest, requiring only 115V single-phase 60 Hz service with 18.7 to 30 amp breaker sizing. Refrigerant line sets ship with 3/4-inch insulation and accommodate 50-foot maximum lengths between indoor and outdoor components.

Warranty & Reliability

Goodman backs this system with a comprehensive 10-year parts warranty provided you register online within 30 days of installation. The warranty covers compressor, heat exchanger, and refrigerant charge, though labor is typically not included. Most contractors factor three to five years of usage into replacement cost analysis, making this warranty coverage competitive for mid-tier equipment.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	34,800
Heating BTU	100,000
Refrigerant	R410A or R22
Electrical	115 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73.5
Weight (in lbs)	30.000000
Feature	Spec
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	30 amps
Min. Breaker Size	18.7 amps
Tonnage	5 Ton
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.
AHRI Certificate Number	7368836
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Product Features	Rebate Available
Furnace Efficiency / AFUE	96%
Blower Motor	Variable Speed - ECM
Maximum CFM	2000
Configuration	Upflow / Downflow
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

What's the real difference between 16 SEER1 and standard 13 SEER air conditioning? +

SEER1 testing uses updated conditions reflecting hotter climate scenarios. A 16 SEER1 unit delivers approximately 23 percent better cooling efficiency than 13 SEER baseline equipment. On a 2,500 square foot home, expect summer electricity savings of 400 to 600 kWh annually compared to older systems.

Can I upgrade this furnace to propane if I currently use natural gas? +

Yes. Goodman designs this furnace for both natural gas and propane operation. However, conversion requires adjusting burner orifices and gas valve settings at commissioning. Your installer must reference the CAPF Installation Manual and verify local propane supply pressure before firing the unit.

Does the 96% AFUE rating apply to both natural gas and propane operation? +

The 96% AFUE specification applies to natural gas combustion. Propane operation typically yields slightly lower efficiency, around 94-95% AFUE, due to different energy content per cubic foot and flame characteristics. Verify exact propane ratings with Goodman before specifying for propane-only applications.

How does this system compare to a high-efficiency two-stage compressor unit from Goodman? +

This single-stage compressor unit costs 400 to 800 dollars less than two-stage equivalents but runs continuously at full capacity. Two-stage models modulate output, reducing runtime and improving efficiency in partial-load conditions. For heating-dominant climates, the furnace efficiency advantage of this unit often offsets the compressor disadvantage.

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

Goodman will still honor the 10-year warranty, but online registration ensures faster claims processing and eliminates documentation disputes. Contractors typically handle registration as part of startup, so verify this task completes before final customer handoff.

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