5 Ton 18 SEER Two Stage Goodman Heat Pump Review 2026

// Bottom Line

This Goodman is ideal for contractors and homeowners in moderate climates seeking respectable efficiency without premium pricing. The 18 SEER rating and two-stage compressor make it a practical choice for both cooling and heating applications where energy bills matter, but you don't need top-tier performance.

Review

The Goodman 5 Ton 18 SEER Two Stage Heat Pump (DSZC180601) sits squarely in the value-conscious segment of the residential HVAC market. At $5,235, it undercuts premium manufacturers while delivering respectable efficiency. Goodman maintains strong contractor relationships and broad parts availability, making service calls straightforward. This unit targets homeowners and builders seeking a balance between upfront cost and operational efficiency without stretching budgets.

Performance specs are solid across the board. The unit delivers 57,000 BTU in both heating and cooling modes, suitable for average 5-ton residential loads. An 18 SEER rating meets Energy Star requirements and typically reduces energy consumption by 15-20% versus standard 14 SEER equipment. The two-stage condenser switches between low and high capacity, matching output to actual demand. The scroll compressor provides reliable operation with minimal wear during partial-load cycles common in spring and fall.

Pros & Cons

Pros

18 SEER rating qualifies for Energy Star, reducing operating costs by roughly 15-20% versus baseline units
Two-stage condenser allows modulated cooling, improving comfort and efficiency during partial-load conditions
57,000 BTU heating and cooling capacity handles 5-ton residential installations effectively
Scroll compressor is proven reliable with lower maintenance costs than rotary designs
208/230V single-phase electrical is standard for most residential installations, simplifying wiring

Cons

75 dBA noise level is moderately loud, potentially noticeable during peak operation in quiet neighborhoods
No SEER2 rating provided, making direct comparison with newer efficiency standards difficult
Two-stage design is good but not variable capacity, limiting fine-tuned efficiency in extreme climate zones

Who Should Buy

Best For

Contractors installing replacement systems in existing homes and homeowners in regions with moderate heating and cooling demands. This unit balances efficiency gains with reasonable upfront costs, making it attractive when rebates apply.

Consider Alternatives If

Those in extreme climates needing maximum heating output, noise-sensitive properties, or buyers requiring the latest SEER2 efficiency metrics.

5 Ton 18 SEER Two Stage Goodman Heat Pump

$5235

Buy at HVACDirect →

Installation

Installation is straightforward for qualified contractors. The unit requires 208/230V single-phase power with 38.8-60 amp breaker sizing, standard for most homes. Sweat valve connections use 3/8-inch liquid and 1 1/8-inch suction lines. At 336 pounds and 35.5 by 35.5 by 38.25 inches, placement requires adequate concrete pad space and clearance for airflow. Goodman provides comprehensive installation guides and technical documentation to guide the process.

Warranty & Reliability

The 10-year parts warranty requires online registration and covers manufacturing defects. This is competitive for mid-tier equipment but shorter than some premium competitors offering 12-15 years. Goodman's extensive service network means parts availability is rarely an issue. Labor costs remain your responsibility, so factor that into long-term ownership planning.

Specifications

SKU	DSZC180601
Brand/Manufacturer	Goodman
Cooling BTU	57,000
Heating BTU	57,000
Refrigerant	R410A
Electrical	208 / 230 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	75
Weight (in lbs)	336.000000
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	60 amps
Min. Breaker Size	38.8 amps
Tonnage	5 Ton
Valve Type	Sweat
Height	38.25"
Width	35.5"
Depth	35.5"
Resources	Goodman Customer Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Specifications Goodman Technical Information Goodman Technical Installation Goodman Technical Publication Goodman Warranty You will need AdobeÂ® AcrobatÂ® 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.

Frequently Asked Questions

What does the 18 SEER rating actually mean for my monthly bills? +

SEER measures cooling efficiency; higher numbers mean lower electricity use. At 18 SEER versus a standard 14 SEER unit, expect roughly 15-20% lower cooling costs annually. Actual savings depend on climate, usage patterns, and local electricity rates. In hot climates, you'll see faster payback on the premium versus base models.

Can this unit handle both heating and cooling in cold climates? +

Yes, it's a heat pump with 57,000 BTU heating output. However, at 75 dBA it runs audibly during peak heating. In regions below 10°F regularly, consider a dual-fuel setup pairing this with backup resistance heating for supplemental capacity during extreme cold.

What's the advantage of two-stage operation over single-stage? +

Two-stage compressors run at reduced capacity 80% of the time, matching mild weather demands while maintaining comfort. This reduces short-cycling, lowers noise, and extends compressor life. Single-stage units cycle on and off fully, using more energy and creating temperature swings in shoulder seasons.

How does this compare to high-efficiency Lennox or Carrier models at similar price points? +

Goodman delivers comparable SEER ratings (18 SEER matches many Lennox XC25 units) but with a lower price tag. Lennox and Carrier offer premium sound dampening and slightly longer warranties. Goodman trades brand prestige for value and parts availability, a sensible trade for most homeowners.

What happens if something breaks after the 10-year warranty expires? +

You pay full service costs. Compressor replacement typically runs $800-1,200 in labor plus parts. Planning for eventual repairs is wise on any 10-plus-year-old unit, so budget accordingly after warranty expiration.

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