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

// Bottom Line

This Goodman system delivers excellent value for homeowners in mild-to-moderate climates who prioritize affordability without sacrificing efficiency. The 17.5 SEER cooling and 80% AFUE heating make it an Energy Star qualified choice, though the 80% furnace rating trails premium systems rated above 95% AFUE.

Review

Goodman positions this 3-ton gas furnace and heat pump combination as an accessible entry point into Energy Star cooling without compromising basic performance. The SKU LS38783850 blends a propane-or-natural-gas furnace rated at 80% AFUE with a 17.5 SEER heat pump condenser, creating a hybrid system popular with budget-focused contractors. At $2,789, it undercuts many comparable combo units while maintaining reputable manufacturer backing and straightforward upflow installation for standard ductwork configurations.

The heating side delivers 35,000 BTU through two burner stages, allowing efficient partial-load operation during shoulder seasons. Cooling pulls 35,000 BTU at 17.5 SEER via a two-stage scroll compressor and R410A refrigerant, with a variable-speed blower motor that adjusts to actual demand. Maximum CFM reaches 2,000, sufficient for typical 3-ton applications. The 208/230V single-phase electrical configuration fits standard residential panels with a 21.9 to 35 amp breaker range, simplifying retrofit work.

Pros & Cons

Pros

17.5 SEER cooling efficiency exceeds most budget alternatives by 2-3 SEER points
Two-stage compressor and condenser reduce energy waste during partial-load operation
Variable-speed blower motor optimizes comfort while lowering runtime electricity costs
35,000 BTU heating and cooling capacity covers typical 3-ton residential applications
Energy Star certified, qualifying for utility rebates in many regions
10-year warranty with online registration provides solid long-term coverage

Cons

80% AFUE furnace efficiency is baseline, not best-in-class for northern climates requiring heavy heating
72 dB noise level runs slightly louder than premium variable-speed systems
Scroll compressor is durable but less efficient than some newer rotary designs in extreme conditions

Who Should Buy

Best For

This system suits homeowners in regions with moderate heating demands, such as southern and mid-Atlantic climates, who want Energy Star efficiency without premium pricing. It's ideal for contractors installing budget-conscious replacements where heating load doesn't exceed 35,000 BTU capacity.

Consider Alternatives If

Northern homeowners relying heavily on furnace heating should consider systems rated 90% AFUE or higher to justify installation costs over the system's lifespan.

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

$2789

Buy at HVACDirect →

Installation

Installation requires a metal flue for furnace exhaust and standard 3/8-inch suction and liquid refrigerant lines supplied up to 50 feet. The upflow configuration fits 30-by-21-by-21-inch footprint into most closet or basement locations. Technicians must verify AHRI certificate number 204633302 matches their ductwork and coil pairing to maintain warranty eligibility. Online registration unlocks the 10-year coverage.

Warranty & Reliability

The 10-year warranty activates upon online registration after purchase, covering compressor, heating elements, and sealed components. This extended coverage is competitive for budget systems but requires proactive registration within the specified window. Evaporator coil coverage adds peace of mind for refrigerant-side failures, though labor costs remain customer responsibility.

Specifications

SKU	LS38783850
Brand/Manufacturer	Online Supply
Cooling BTU	35,000
Heating BTU	35,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	72
Weight (in lbs)	30.000000
Feature	Spec
AHRI Certificate Number	204633302
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.
Product Features	Two Stage Condenser
Energy Star	Yes
SEER1 (Efficiency)	18
Condenser Stages	Two Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	7/8"
Max Breaker Size	35 amps
Min. Breaker Size	21.9 amps
Tonnage	3.5 Ton
Valve Type	Sweat
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 17.5 SEER compare to other budget heat pumps at this price point? +

17.5 SEER positions this unit above entry-level systems typically rated 14-16 SEER. You'll see roughly 10-15% lower summer cooling costs versus basic alternatives, though premium units at 19-21 SEER extend savings further. For moderate climates, 17.5 SEER balances efficiency gains with reasonable cost.

Is this suitable for replacing an old central air system in a split configuration? +

Yes, if your existing furnace has compatible ductwork and the condenser can mount outside. AHRI certification 204633302 must match your specific indoor coil pairing. A technician should verify airflow capacity and static pressure before installation to avoid efficiency loss.

Will 80% AFUE heating adequately serve a northern climate? +

80% AFUE is acceptable for moderate heating, but northern homes experiencing sustained below-freezing conditions lose cost-effectiveness quickly. A 90-95% AFUE system recovers 10-15% more heat, offsetting higher upfront costs within 7-10 heating seasons in harsh climates.

How does this Goodman compare to Lennox or Carrier equivalents at similar pricing? +

Goodman trades brand prestige for lower cost, delivering comparable component quality and SEER ratings. Lennox and Carrier units command 15-25% premiums but offer quieter operation and enhanced warranty terms. Choose Goodman for value-conscious replacements, premium brands for durability prioritization.

What does the 10-year warranty actually cover if something fails? +

Compressor, heating elements, and sealed refrigerant components are covered. Labor, refrigerant recharges, and diagnostic fees are customer expenses. Online registration is mandatory to activate coverage.

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