Independent Review · Updated June 2026

2 Ton 18 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal

Budget-friendly 2-ton system with solid 18 SEER cooling and 80% AFUE heating

8.2
IndustrialRank Score
Efficiency
8.5
Reliability
7.8
Value
8.0
Installation
8.5
Warranty
8.0
2 Ton 18 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal
Current Price
$2053
Check Price at HVACDirect → Shop Now at HVACDirect
Authorized dealer · Full manufacturer warranty
// Bottom Line
This Goodman system makes sense for homeowners replacing older equipment on a tight budget who want measurable efficiency gains without premium pricing. The 18 SEER rating and two-stage components deliver respectable performance for smaller homes or apartments in moderate climates.

Review

The Goodman 2-ton horizontal system sits comfortably in the value tier of residential HVAC equipment. At $2,053 for a matched furnace-condenser package, it targets budget-conscious homeowners and contractors who need dependable equipment without premium pricing. The horizontal configuration is practical for limited spaces, and the dual-fuel capability supports both natural gas and propane installations. For contractors stocking inventory, this SKU LS38343850 offers quick ROI on replacement jobs.

Performance specs show an 18 SEER cooling rating paired with 80,000 BTU heating capacity at 80% AFUE efficiency. The cooling side delivers 23,000 BTU output through a scroll compressor and two-stage condenser, meaning the unit modulates based on load rather than cycling on-off constantly. Two-stage heating does similar work, cutting short-cycling losses. The variable-speed blower motor runs from 0 to 2,000 CFM, allowing finer humidity control than fixed-speed alternatives. ENERGY STAR certification confirms the cooling meets federal baseline requirements.

Pros & Cons

Pros

  • 18 SEER cooling efficiency qualifies for ENERGY STAR, reducing operating costs versus older units
  • Two-stage burner and two-stage condenser provide modulated heating and cooling for better comfort
  • Variable-speed blower motor adjusts airflow from 0 to 2000 CFM, improving humidity control
  • Horizontal configuration fits tight attic or crawlspace installations where vertical setups won't work
  • 10-year warranty with online registration covers parts and compressor, standard for Goodman equipment

Cons

  • 80% AFUE furnace efficiency lags behind 95%+ AFUE high-efficiency models by roughly $20-30 monthly in heating fuel
  • Scroll compressor is reliable but louder at 71 dB than inverter-driven alternatives in premium units
  • 3.5-ton condenser rated but marketed as 2-ton may confuse buyers expecting perfectly matched tonnage

Who Should Buy

Best For

Homeowners in climate zones with moderate heating and cooling needs who prioritize upfront savings over long-term energy costs. Good fit for rental properties, secondary residences, or 800 to 1200 square foot homes where premium efficiency doesn't justify the expense.

Consider Alternatives If

Anyone in extreme cold climates needing high-efficiency heating, or buyers planning to stay 15+ years and wanting to minimize lifetime operating expenses through premium AFUE ratings.

2 Ton 18 SEER 80% AFUE 80,000 BTU Goodman Gas Furn
$2053
Buy at HVACDirect →

Installation

This horizontal unit requires metal exhaust flue and 208/230V single-phase 60Hz electrical service with breaker capacity between 15.3 and 25 amps. The 21-inch cube footprint fits standard attic cavities or crawlspaces. Refrigerant lines use sweat-type valve connections with 3/8-inch liquid and 3/4-inch suction sizing. The supplied 50-foot line set and 3/4-inch insulation thickness support typical residential distances without performance loss.

Warranty & Reliability

Goodman's 10-year parts and compressor warranty activates upon online registration. This is standard coverage in the mid-market segment, protecting against manufacturing defects but not wear items or installation errors. Read the CHPF warranty documentation to understand exclusions. Extended warranties are available separately if lifetime coverage concerns matter to your decision.

Specifications

SKULS38343850
Brand/ManufacturerOnline Supply
Cooling BTU23,000
Heating BTU80,000
RefrigerantR410A
Electrical208 / 230 V. 1 Phase 60 Hz
Warranty10 Years with Online Registration
Decibel Level (dBA)71
Weight (in lbs)22.000000
FeatureSpec
AHRI Certificate Number204633302
Airflow DirectionUpflow/Horizontal
Exhaust Flue RequirementMetal
Furnace Efficiency / AFUE80%
Blower MotorVariable Speed
Maximum CFM2000
ConfigurationHorizontal
Burner StagesTwo
Fuel TypePropane, Natural Gas
Height21"
Width21.125"
Depth26"
ResourcesCHPF Installation Manual CHPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 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 FeaturesTwo Stage Condenser
Energy StarYes
SEER1 (Efficiency)18
Condenser StagesTwo Stage
Compressor TypeScroll
Liquid Valve Size3/8"
Suction Valve Size3/4"
Max Breaker Size25 amps
Min. Breaker Size15.3 amps
Tonnage3.5 Ton
Valve TypeSweat
Liquid Line3/8"
Suction Line3/4"
StyleA-Coil
Suction Line Insulation Thickness3/4"
Length50 feet

Frequently Asked Questions

Why does this show 3.5-ton tonnage when it's marketed as 2-ton? +
The 23,000 BTU cooling output equals roughly 1.9 tons, but the condenser is rated 3.5-ton capacity. This oversizing provides safety margin and future flexibility if you upgrade the furnace later. Don't confuse the rated condenser size with actual system tonnage delivered.
Will this horizontal unit fit my attic with limited clearance? +
At 21 inches tall by 21.125 inches wide by 26 inches deep, it's compact for horizontal mounting. Verify your attic has 30+ inches of clear height above the unit and adequate return/supply ductwork access. The weight is only 22 pounds, so installation labor is straightforward.
How much will this save me compared to a 13 SEER unit? +
The 18 SEER rating uses roughly 28% less cooling energy than 13 SEER equipment. In a moderate climate requiring 1,500 cooling hours yearly, expect $150-250 annual savings depending on local electricity rates. Payback typically occurs within 5-7 years.
Is this better than Carrier or Lennox equipment at similar prices? +
Goodman competes on efficiency ratings and component reliability rather than brand prestige. An 18 SEER Carrier or Lennox offers similar cooling performance but commands 15-20% price premiums. This unit delivers equivalent BTU and SEER for less, making it practical for budget-focused buyers.
Do I need a technician to install this, or can a handyman handle it? +
Refrigerant charging, electrical connections, and gas line setup require EPA-certified HVAC technicians. Improper installation voids the 10-year warranty and creates safety hazards. Budget $500-1,200 for professional installation depending on local labor rates.

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