Goodman 3.5 Ton 14 SEER 92% 100,000 BTU Furnace & AC System - R410A Upflow Review 2026

// Bottom Line

This Goodman system is best for budget-conscious homeowners and contractors needing a reliable split system replacement in moderate climates. At $647, you're getting solid AFUE and SEER ratings without premium pricing, though you'll need professional installation for the refrigerant lines and electrical work.

Review

The Goodman 3.5-ton furnace and AC combo represents intelligent value engineering for homeowners and contractors tired of premium pricing. This upflow configuration with R410A refrigerant checks the boxes for modern HVAC requirements while staying accessible. Online Supply's $647 price point positions it competitively against carrier mid-range equipment. The system comes pre-configured for straightforward installation, making it attractive for retrofit applications where existing ductwork and electrical infrastructure already exist.

Performance metrics show a 92% AFUE furnace delivering 42,000 BTU of heating output, paired with 42,000 BTU cooling capacity and a claimed 14-16 SEER rating. The multi-speed blower motor maxes out at 1,600 CFM, providing flexibility across load conditions. The scroll compressor is proven technology, reliable across millions of units. Energy Star certification and PVC exhaust flue compatibility simplify installation. However, the single-stage burner and condenser mean the system runs in on-off cycles rather than modulating, which can affect comfort consistency during mild weather conditions.

Pros & Cons

Pros

92% AFUE furnace efficiency exceeds most mid-range units and qualifies for energy rebates
14 SEER cooling with R410A refrigerant meets current EPA standards and Energy Star requirements
3.5-ton capacity with 42,000 BTU heating and cooling handles typical residential loads across most climate zones
Multi-speed blower motor allows better temperature control and reduced operating costs versus single-speed alternatives
10-year warranty with online registration provides solid coverage for furnace and evaporator coil protection

Cons

Single-stage burner and condenser mean less modulation for varying load conditions, increasing cycling
73 dB noise level runs slightly louder than high-efficiency models, noticeable during operation
Specs show conflicting SEER ratings (14 vs 16), creating uncertainty about actual cooling efficiency

Who Should Buy

Best For

Homeowners replacing aging furnace-AC systems who prioritize upfront cost savings over premium features, and contractors building out spec inventory for residential retrofit projects. This unit works well in established homes with existing ductwork and moderate heating/cooling demands.

Consider Alternatives If

Anyone in extremely cold climates needing high heating capacity, or homeowners seeking the quietest, most efficient systems available should look at higher-tier Goodman models or competing brands.

Goodman 3.5 Ton 14 SEER 92% 100,000 BTU Furnace &

$647

Buy at HVACDirect →

Installation

This upflow unit measures 30 inches high by 21 inches wide by 21 inches deep, fitting standard utility closets and basements. The 208/230V single-phase 60Hz electrical requirement needs a 22.4 to 35-amp breaker. Refrigerant line sizing requires 3/8-inch liquid and 1 1/8-inch suction lines with 1/2-inch insulation, pre-measured to 50 feet. Professional HVAC installation is essential for proper refrigerant charging and electrical setup.

Warranty & Reliability

Goodman backs this system with a 10-year warranty on the furnace and evaporator coil, activated through online registration. This covers parts replacement for manufacturing defects, though labor costs fall on the homeowner. This warranty length is standard for mid-range equipment and provides reasonable protection against compressor or heat exchanger failure.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	42,000
Heating BTU	42,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	48.000000
Feature	Spec
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Plastic / PVC
Furnace Efficiency / AFUE	92%
Blower Motor	Multi Speed
Maximum CFM	1600
Configuration	Upflow / Downflow
Flue Location	Right
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	35 amps
Min. Breaker Size	22.4 amps
Tonnage	3.5 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

What does the 92% AFUE rating actually mean for my heating bills? +

AFUE (Annual Fuel Utilization Efficiency) of 92% means 92 cents of every gas dollar becomes usable heat, with 8 cents lost through exhaust. This is solid mid-range efficiency, offering meaningful savings versus older 80% units. Your actual savings depend on climate, insulation, and usage patterns, typically 15-20% lower heating costs versus baseline equipment.

Can I install this myself, or do I need a licensed technician? +

Professional installation is mandatory. You'll need EPA certification to handle R410A refrigerant, licensed electrician work for the 208/230V connection, and proper airflow testing. DIY installation voids warranties and creates safety risks. Budget $1,500-2,500 for professional installation labor in most markets.

The specs show both 14 SEER and 16 SEER ratings. Which is correct? +

This discrepancy requires clarification from the seller before purchase. SEER1 regulations changed recently, so older marketing materials showed 14 SEER while newer standards reflect different test conditions. Confirm the exact cooling efficiency rating with technical documentation before committing to ensure it matches your expectations.

How does single-stage cooling compare to variable-capacity systems? +

Single-stage compressors run at full capacity or off, cycling on-and-off to maintain temperature. Variable-capacity systems modulate output, reducing cycles and improving comfort during mild weather. Single-stage is less expensive upfront but uses slightly more energy. For moderate climates with stable temperatures, the difference is minimal.

Is the 10-year warranty transferable if I sell my home? +

Goodman typically restricts the 10-year parts warranty to the original owner. The new homeowner receives reduced coverage, usually 5 years on parts. Verify transfer terms in warranty documentation, as policies vary by region and registration method.

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