Heat Pumps

KEEN Multizone Ductless vs Goodman GSZC18

Side-by-side comparison based on specs, real pricing, and our crew's installation experience. Updated for 2026.

Marcus R.Senior Solar Engineer

NABCEP PV Installation Professional·Updated Feb 2026

KEEN

Goodman

7.5

Choose KEEN Multizone Ductless if:

Homeowners seeking the lowest installed cost for multi-zone ductless
Budget-friendly cold-climate performance down to -15°F
Tech-forward buyers who want AI-driven indoor units
Supplemental heating in homes with existing HVAC

$3,000–$7,500 installed

Choose Goodman GSZC18 if:

Most affordable heat pump option in our lineup
First-time heat pump buyers on a tight budget
Rental properties or homes being prepared for sale
Mild-climate applications where extreme cold isn't a concern

$3,000 - $10,000 installed

Spec-by-Spec Comparison

Specification

KEEN Multizone Ductless

Goodman GSZC18

Price

$3,000–$7,500 installed

$3,000 - $10,000 installed

Warranty

10 years

HSPF2

10.5

9.0

SEER2

18.0

15.5

Min Operating Temp

-15°F

15°F (-9°C)

BTU Range

6,000–36,000

—

Refrigerant

R-454B

R-410A

Zones

1–4

—

Noise (Outdoor)

54 dB

—

Voltage

208/230V

—

Noise Level

—

62 dB (outdoor)

Size Range

—

24,000 - 60,000 BTU

Compressor Warranty

—

10 years

NuWatt Rating

7.5/10

7/10

State Heat Pump Rebates

Both the KEEN Multizone Ductless and Goodman GSZC18 may qualify for these state rebate programs. Click your state for full eligibility details.

State	Program	Rebate Amount	Details
Massachusetts	Mass Save Whole-Home	Up to $8,500	$2,650/ton capped. $500 sizing + $500 weatherization bonuses. HEAT Loan 0% APR up to $25K.
Connecticut	Energize CT	$250-$1,000/ton	Standard $250/ton (max $2,500). Energy Optimization $1,000/ton (max $10K). Smart-E Loan 0.99% APR.
Rhode Island	Clean Heat RI	Up to $11,500	60% of cost (standard). 100% income-eligible (max $18K).
Maine	Efficiency Maine	$1,000-$3,000/unit	Standard $1K, moderate $2K, low-income $3K per unit. Max 3 units.
New Hampshire	NHSaves	$250-$1,250/ton	Standard $250/ton. Enhanced $1,250/ton (replacing electric resistance).
Vermont	Efficiency Vermont	$475-$2,200/unit	Ductless $475/head, ducted $2,200. GMP income bonus $2K. Cold-climate models only.
New Jersey	NJ Whole Home + Utility	Up to $7,500 + $1,400	Graduated rebate ($2K base + $200/point). Utility: PSE&G $900, ACE $1,300, RECO $1,400.
Pennsylvania	Act 129 Utility Rebates	$200-$1,700+	PECO $300 + EAP $500-1,400 stackable. PPL $350-450. FirstEnergy $500. Duquesne $200.
Texas	Utility Rebates	$100-$3,000	Austin Energy ~$3K (highest). Oncor $600. CPS $100-275/ton. CenterPoint ~$500. No statewide program.

Pros & Cons

KEEN Multizone Ductless

Pros

+Lowest price point in our ductless lineup starting at $3,000
+AI-driven indoor units auto-adjust airflow and temperature
+R-454B refrigerant: lowest GWP in class (466)
+Strong 10-year parts & labor warranty for a budget brand
+Cold-climate rated to -15°F with 10.5 HSPF2

Cons

-Brand new to US market — very limited installer familiarity
-Cold-climate performance (-15°F) trails TOSOT (-22°F) and Mitsubishi (-13°F)
-18.0 SEER2 — lower cooling efficiency than premium competitors
-Smaller BTU range may not suit large whole-home applications

Goodman GSZC18

Pros

+Lowest installed price — most accessible entry point
+Strong 10-year parts warranty (best in budget category)
+Daikin-manufactured (Goodman is a Daikin subsidiary) — reliable engineering
+Wide parts availability and dealer network
+ComfortBridge communicating technology available

Cons

-Limited cold-climate capability — needs backup below 15°F
-Noisier than premium brands (62 dB outdoor)
-Fewer smart home and app features
-Single-stage or two-stage only — no true variable-speed

Installation Notes from Our Crew

KEEN Multizone Ductless

KEEN systems install like standard mini-splits with quick-connect linesets. The AI-driven indoor units calibrate automatically during commissioning. R-454B is mildly flammable (A2L) and requires EPA Section 608 certification. Wi-Fi module included for app control. Typical install: 1 day for single-zone, 2 days for multi-zone.

Goodman GSZC18

Goodman is our go-to when budget is the primary constraint. It's manufactured by Daikin, so the underlying engineering is sound. Our crews install it quickly — usually under a day for a standard ducted replacement. The 10-year parts warranty is actually the best in the budget tier. We're upfront with homeowners: this is a great system for moderate climates, but for inland New England winters, a cold-climate model is a better long-term investment.

Frequently Asked Questions

Is the KEEN Multizone Ductless or Goodman GSZC18 better?

The KEEN Multizone Ductless scores 7.5/10 vs 7/10 in our rating. It excels at: homeowners seeking the lowest installed cost for multi-zone ductless. The Goodman GSZC18 is the better choice if: most affordable heat pump option in our lineup. The right pick depends on your specific situation.

How much does the KEEN Multizone Ductless cost vs the Goodman GSZC18?

The KEEN Multizone Ductless costs $3,000–$7,500 installed. The Goodman GSZC18 costs $3,000 - $10,000 installed. Both prices include professional installation by NuWatt Energy. State incentives may reduce your net cost — use our calculator for exact pricing.

Which has a better warranty?

The KEEN Multizone Ductless has a 10-year warranty (10-year parts & labor warranty). The Goodman GSZC18 has a 10-year warranty (10yr compressor / 10yr parts warranty). Both offer the same warranty length.

Does NuWatt install both the KEEN Multizone Ductless and Goodman GSZC18?

Yes. NuWatt Energy installs both products and our crew has hands-on experience with each. We can help you choose based on your home, energy goals, and budget during a free consultation.

Can I switch from KEEN to Goodman later?

In most cases, yes. Electrical panel changes require a full panel swap by a licensed electrician. Contact NuWatt for a specific assessment of your system.

Update Location

KEEN Multizone Ductless vs Goodman GSZC18

Choose KEEN Multizone Ductless if:

Choose Goodman GSZC18 if:

Spec-by-Spec Comparison

State Heat Pump Rebates

Pros & Cons

KEEN Multizone Ductless

Pros

Cons

Goodman GSZC18

Pros

Cons

Installation Notes from Our Crew

KEEN Multizone Ductless

Goodman GSZC18

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?

KEEN Multizone Ductless vs Goodman GSZC18

Choose KEEN Multizone Ductless if:

Choose Goodman GSZC18 if:

Spec-by-Spec Comparison

State Heat Pump Rebates

Pros & Cons

KEEN Multizone Ductless

Pros

Cons

Goodman GSZC18

Pros

Cons

Installation Notes from Our Crew

KEEN Multizone Ductless

Goodman GSZC18

Frequently Asked Questions

Related Comparisons

Not Sure Which to Choose?