3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Upflow Review 2026

// Bottom Line

This Goodman system delivers respectable performance at an entry-level price point, making it ideal for budget-conscious homeowners upgrading older equipment or contractors needing a reliable mid-range option. The 14 SEER rating and two-stage heating provide meaningful efficiency gains without premium pricing.

Review

The Goodman 3.5-ton combo system sits firmly in the mainstream HVAC market, offering competent performance without premium pricing. At $2071, this upflow configuration targets cost-conscious homeowners and budget-aware contractors seeking a straightforward replacement or upgrade from older equipment. The system carries AHRI certification number 204633307, confirming matched-pair performance between the air conditioner and furnace components.

The cooling side delivers 42,000 BTU of capacity with a 14 SEER rating, placing it solidly in the mid-efficiency range. The heating side produces 80,000 BTU at 80% AFUE using a two-stage burner that adapts to heating demand. A variable-speed blower motor manages airflow up to 2000 CFM, providing better part-load performance than single-speed alternatives. The R410A refrigerant and scroll compressor configuration are industry standards, ensuring widespread service availability.

Pros & Cons

Pros

14 SEER cooling efficiency is solid for the price tier, delivering 42,000 BTU of cooling capacity
Two-stage burner on the furnace side enables better heat modulation and comfort during mild weather
Variable-speed blower motor optimizes airflow at 2000 CFM maximum, reducing energy waste during partial-load operation
10-year warranty with online registration provides peace of mind on both heating and cooling components
R410A refrigerant is industry standard, widely serviced, and readily available for future maintenance

Cons

80% AFUE furnace efficiency lags behind high-efficiency models hitting 95%+ AFUE, costing more in annual heating fuel
Single-stage condenser means the AC unit runs at full capacity regardless of cooling demand, less efficient than variable-capacity units
Not Energy Star certified, indicating it meets minimum standards rather than exceeding them for efficiency seekers
73 dB noise level is moderately loud, comparable to older systems, which may be noticeable in quiet neighborhoods

Who Should Buy

Best For

Homeowners in moderate climates with tight installation budgets who prioritize upfront cost savings over premium efficiency ratings. Contractors looking for a dependable workhorse system that balances performance, ease of installation, and competitive pricing for residential retrofit jobs.

Consider Alternatives If

Buyers in extremely cold climates where 80% AFUE heating efficiency will drive high utility bills, or homeowners prioritizing minimal environmental impact and maximum long-term savings through high-efficiency equipment.

3.5 Ton 14 SEER 80% AFUE 80,000 BTU Goodman Gas Fu

$2071

Buy at HVACDirect →

Installation

This upflow unit measures 30 inches tall by 24.5 inches wide by 21 inches deep, fitting most standard closet and utility spaces. It requires 208/230V single-phase 60Hz power with a breaker between 22 and 35 amps, standard residential electrical service. Metal exhaust flue requirement and A-coil design are straightforward for experienced HVAC installers. Pre-charged refrigerant lines come in standard sizes (3/8 inch liquid, 7/8 inch suction) with 30-foot maximum line set capacity.

Warranty & Reliability

Goodman backs this system with a 10-year warranty on parts when you register online, a reasonable coverage period for residential equipment. This covers both the furnace and air conditioning components, providing protection against defects in materials and workmanship. Keep documentation and proof of professional installation to validate warranty claims.

Specifications

SKU	LS38783830
Brand/Manufacturer	Online Supply
Cooling BTU	42,000
Heating BTU	80,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	30.000000
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	CAPT Installation Manual CAPT 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	No
SEER1 (Efficiency)	14
Condenser Stages	Single Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	35 amps
Min. Breaker Size	22 amps
Tonnage	5 Ton
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil
Suction Line Insulation Thickness	3/8"
Length	30 feet

Frequently Asked Questions

How does 14 SEER compare to modern air conditioner ratings? +

14 SEER is respectable mid-range efficiency. Modern high-efficiency units reach 16-20 SEER, but those cost significantly more. At 42,000 BTU cooling capacity, this 14 SEER unit suits homeowners who want noticeable efficiency gains without premium pricing. You'll see lower bills than 10-13 SEER older units but less savings than jumping to 18+ SEER.

Will this fit my existing ductwork and return air? +

The 2000 CFM maximum airflow and A-coil design accommodate standard residential ductwork. However, verify your current ducts are properly sized and sealed. Undersized return air or blocked filters force the variable-speed blower to work harder, reducing efficiency gains. Have a contractor measure your existing system before assuming compatibility.

Is 80% AFUE furnace efficiency adequate for cold climates? +

80% AFUE works reasonably well in moderate climates but underperforms in harsh winters. Northern states with extended heating seasons benefit from 90%+ AFUE models that recover flue heat. In colder regions, the two-stage burner helps by modulating flame during mild weather, but winter heating costs will still run higher than high-efficiency alternatives.

What separates this from Goodman's premium offerings? +

Premium Goodman systems add variable-capacity compressors (two-stage or modulating), higher SEER ratings (16-18), and 95%+ AFUE furnaces. Those cost 40-60% more but deliver better comfort through modulation and lower operating costs. This unit is their entry-to-mid tier solution, sacrificing some efficiency and comfort features for affordability.

Does online registration really activate the warranty? +

Yes. The 10-year parts warranty requires online registration with proof of professional installation. Without registration, Goodman typically honors limited 5-year coverage. Register immediately after installation to secure full protection and maintain records for any future claims.

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