4 Ton 17.5 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Heat Pump System - Horizontal Review 2026

// Bottom Line

This Goodman system works well for homeowners replacing older equipment in moderate climates or looking for a cost-effective hybrid heating and cooling solution. At $2,071, it's accessible pricing for contractors installing in budget-conscious residential projects where the 80% AFUE furnace and 17.5 SEER2 heat pump deliver respectable efficiency without premium pricing.

Review

The Goodman 4-ton gas furnace and heat pump system represents the practical middle ground in residential HVAC. Priced at $2,071, it combines propane or natural gas heating with R410A refrigerant cooling in a single horizontal unit. This SKU LS381183850 targets budget-conscious homeowners and contractors who want Energy Star certification without climbing into premium pricing brackets. The horizontal configuration and A-coil design make it particularly useful for attic installations where vertical clearance is limited.

Performance numbers tell a balanced story. The 80% AFUE furnace delivers 80,000 BTU heating capacity across two burner stages, while the heat pump side produces 47,000 BTU cooling with a 17.5 SEER2 rating and two-stage compressor. That SEER2 efficiency reduces summer energy consumption noticeably compared to single-stage units. The variable-speed blower motor operates from zero to 2,000 CFM, allowing the system to modulate output during mild weather. At 73 dB, noise is acceptable for residential settings, though not whisper-quiet.

Pros & Cons

Pros

17.5 SEER2 rating exceeds Energy Star requirements, reducing cooling costs year-round
Two-stage compressor and condenser provide efficient partial-load operation during mild weather
80,000 BTU heating capacity handles cold snaps without oversizing for milder seasons
Variable-speed blower motor adjusts airflow from 0 to 2,000 CFM for comfort and efficiency
Horizontal A-coil configuration fits tight attic spaces where vertical setups won't work

Cons

80% AFUE furnace lags behind high-efficiency models reaching 95%, costing more in heating fuel over time
47,000 BTU cooling capacity undersizes this unit as a true 5-ton system, limiting peak summer performance
73 dB noise level at full capacity may bother sensitive homeowners in quiet neighborhoods

Who Should Buy

Best For

Homeowners in moderate climates seeking straightforward heating and cooling without spending $3,500+ on premium equipment. Contractors building spec homes or managing multiple installations where balanced efficiency and affordability matter more than top-tier SEER ratings.

Consider Alternatives If

Anyone in extreme hot climates needing maximum cooling capacity, or heating-dominant regions where 95% AFUE furnaces justify their higher upfront cost through fuel savings.

4 Ton 17.5 SEER 80% AFUE 80,000 BTU Goodman Gas Fu

$2071

Buy at HVACDirect →

Installation

This unit requires a metal exhaust flue for the furnace section and standard refrigerant linesets with 1 1/8 inch suction and 3/8 inch liquid connections. The 120V single-phase electrical service needs a breaker sized between 29.3 and 50 amps, fitting most residential panels. Horizontal orientation simplifies attic mounting. Technicians should budget standard installation time, though the two-stage components require proper calibration for optimal efficiency.

Warranty & Reliability

Goodman backs this system with a 10-year parts warranty upon online registration, protecting against manufacturing defects. This coverage is solid for residential equipment in the $2,000 price range, though some competitors offer extended warranties. Registration is mandatory to activate coverage, so homeowners must complete paperwork promptly after installation.

Specifications

SKU	LS381183850
Brand/Manufacturer	Online Supply
Cooling BTU	47,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	73
Weight (in lbs)	48.000000
Feature	Spec
Product Features	Rebate Available, Two Stage Condenser
Energy Star	Yes
SEER1 (Efficiency)	18
Condenser Stages	Two Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	1 1/8"
Max Breaker Size	50 amps
Min. Breaker Size	29.3 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	24.5"
Width	26"
Depth	21.125"
Resources	CHPF Installation Manual CHPF 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	204633307
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Configuration	Horizontal
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	1 1/8"
Style	A-Coil
Suction Line Insulation Thickness	1/2"
Length	50 feet

Frequently Asked Questions

Why does a 5-ton unit produce only 47,000 BTU of cooling? +

This system is marketed as 5 tons but rates at 4 tons for actual cooling capacity, hence the 47,000 BTU output (roughly 11,750 BTU per ton). The tonnage designation reflects the heating side or a nominal specification. Always verify cooling BTU against your home's load calculations rather than relying on tonnage alone.

Can this horizontal unit fit in my attic with limited headroom? +

Yes, the 24.5 inch height, 26 inch width, and 21.125 inch depth make this A-coil configuration ideal for tight attic spaces. Confirm your ductwork connections align with the unit orientation, and verify you have clearance for the 50-foot suction line insulation requirement.

Is 17.5 SEER2 good enough, or should I upgrade? +

17.5 SEER2 is solid for the price point, delivering meaningful savings over single-stage units. Premium systems reach 21 SEER2, but cost $1,000+ more. For moderate climates, this rating balances operating costs with upfront investment effectively.

How does this compare to Lennox or Carrier equipment? +

Goodman provides competitive efficiency at lower pricing than Lennox or Carrier, though those brands often include better warranties and marginally quieter operation. This unit is better for budget buyers, while competitors suit homeowners prioritizing premium features and longevity.

Do I need to register for the warranty immediately? +

Yes, the 10-year coverage requires online registration after installation. Registration is quick but mandatory. Without it, you forfeit warranty protection, so prioritize this step before the installer leaves.

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