3 Ton 16 SEER 80% AFUE 100,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system works best for homeowners upgrading from older equipment who need solid mid-tier efficiency without premium pricing. The 16 SEER cooling and 80% AFUE heating strike a practical balance for moderate climates where both seasons matter.

Review

Goodman's 3 ton system represents a practical middle ground in the residential HVAC market. This upflow configuration delivers 34,800 BTU cooling capacity and 100,000 BTU heating output, sized appropriately for modest homes and small commercial applications. The Energy Star certification signals compliance with current efficiency standards without reaching premium tiers. At this price point and specification level, it competes against mid-range offerings from Rheem and Lennox that target budget-conscious buyers.

Cooling performance hits 16 SEER, translating to roughly 15-20% lower electricity consumption than 13 SEER baseline units over a cooling season. The furnace delivers 80% AFUE efficiency through its two-stage burner design, burning cleaner at partial load than single-stage alternatives. Maximum airflow reaches 2000 CFM from the variable speed blower, which automatically modulates to match comfort demand. The scroll compressor operates on R410A or R22 refrigerant, offering flexibility for technicians managing mixed fleet installations.

Pros & Cons

Pros

16 SEER cooling rating qualifies for Energy Star certification and delivers measurable utility savings
Two-stage burner on 100,000 BTU furnace provides better part-load efficiency than single-stage alternatives
Variable speed blower motor reduces runtime cycling and improves comfort consistency
Scroll compressor is proven architecture with strong reliability track record across manufacturers
10-year warranty with online registration covers parts and provides decent peace of mind

Cons

80% AFUE is respectable but trails high-efficiency 95%+ systems, costing more to operate long-term in heating-dominant climates
73.5 dB noise level is noticeably loud, ranking above quieter competitors like Lennox or higher-end Goodman models
Single-stage condenser limits cooling efficiency compared to two-stage units that modulate capacity

Who Should Buy

Best For

Homeowners in mixed-climate regions replacing 10-15 year old systems who want proven equipment without paying premium prices. Contractors valuing straightforward installation, standard electrical requirements (208/230V single phase), and broad refrigerant compatibility for retrofit flexibility.

Consider Alternatives If

Anyone in hot climates seeking maximum cooling efficiency or noise-sensitive properties where 73.5 dB operation causes issues.

3 Ton 16 SEER 80% AFUE 100,000 BTU Goodman Gas Fur

Buy at HVACDirect →

Installation

Physical footprint measures 30 inches tall by 21 by 21 inches, fitting standard utility closets and basement installations. The unit requires 208/230V single-phase 60 Hz power with breaker sizing between 18.7 and 30 amps, typical for residential service panels. Metal exhaust flue is mandatory for proper venting. Installation manual and specifications sheet are downloadable, though Adobe Reader is required for documentation access.

Warranty & Reliability

Ten-year parts warranty activates upon online registration with Goodman, covering defects in materials and workmanship. This duration matches industry standard for mid-tier equipment. Labor coverage is not included, so homeowners pay separately for service calls. Registration process is straightforward but mandatory to activate full protection.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	34,800
Heating BTU	100,000
Refrigerant	R410A or R22
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73.5
Weight (in lbs)	30.000000
Feature	Spec
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	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
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/4"
Length	50 feet

Frequently Asked Questions

How does 16 SEER compare to other cooling efficiency ratings? +

16 SEER places this unit in the modern efficient category. It exceeds the minimum 13 SEER federal standard and matches many current mid-tier systems. High-efficiency alternatives reach 18-20 SEER but cost substantially more. For most homeowners, 16 SEER delivers noticeable energy savings versus 10-year-old equipment.

Can this upflow unit fit in my basement with limited headroom? +

At 30 inches tall and 21 by 21 inches wide, it's compact enough for most basements. However, you'll need additional clearance above for ductwork connections and service access. Measure your actual space including the blower plenum and return air configuration before ordering.

What's the practical difference between 80% AFUE and 95% AFUE furnaces? +

80% AFUE converts $0.80 of every dollar of fuel to heat; 95% systems convert $0.95. In heating-heavy climates, the 15% difference translates to meaningful annual fuel bill reductions. This unit works better in mixed climates where cooling season offsets lower heating efficiency.

Is this better than a single-stage condenser system? +

Single-stage condensers run at full capacity constantly, cycling on and off. This unit's single-stage compressor operates similarly. Two-stage alternatives modulate output for better part-load efficiency. For moderate cooling needs, single-stage works fine; high-heat areas benefit more from two-stage technology.

Does the 10-year warranty cover labor or just parts? +

Parts only. You're responsible for service call charges if repairs become necessary. Extended labor warranties are available separately through some retailers for additional cost protection during high-usage years.

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