Goodman

Goodman 1.5 Ton Vertical Coil (R-32) | CAPTA1818B3A

SKU: CAPTA1818B3A
1.5 TonGas HeatR-32
MSRP $716.00
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Shipping & Delivery
Free shipping on complete systems. Most orders ship within 1–3 business days. Local pickup available at our Ocala, FL warehouse for additional savings.
Warranty Information
All units come with full manufacturer warranty covering parts. Register your warranty within 60 days of purchase for extended coverage.
R-32 Only 17-1/2" Wide Cabinet Vertical · Upflow / Downflow 10-Year Parts Warranty
R-32 refrigerant only. The CAPTA1818B3A is engineered exclusively for R-32 systems and is not compatible with R-410A or R-22 condensers. Pair only with an R-32 outdoor unit.

At a Glance

1.5
Ton
Tonnage Range
17-1/2"
Wide
Cabinet Size
Vertical
Upflow / Downflow
Orientation
R-32
Only
Refrigerant

Key Features

What sets the CAPTA1818B3A apart

R-32 Engineered

Optimized for R-32 refrigerant with a factory-installed R-32 refrigerant leakage detection sensor. R-32 is the next-generation residential refrigerant with lower environmental impact than the outgoing R-410A standard.

All-Aluminum Construction

Tubing, fins, and end plates are all aluminum — excellent heat transfer efficiency and inherent resistance to formicary corrosion, a common failure mode in traditional copper-tube coils, especially in humid climates.

Factory-Installed TXV

Comes with a factory-installed thermal expansion valve (TXV) for both cooling and heat pump applications. The TXV automatically meters refrigerant flow for consistent performance across varying load conditions.

Upflow or Downflow Installation

Designed for either upflow or downflow installation, fitting standard furnace and air handler cabinets. The 21" cabinet depth is built for easier access in attic installations.

Thermoplastic Drain Pan

Low water-retention thermoplastic drain pan with secondary drain connections. Foil-faced insulation reduces condensation; drain pan rails allow repositioning without compromising structural integrity.

Backed by Goodman

Covered by Goodman's 10-Year Parts Limited Warranty when registered within 60 days of installation. Galvanized, leather grain-embossed cabinet finish built for long service life.

This Goodman CAPTA vertical evaporator coil is designed for 1.5 ton R-32 systems with a factory-installed thermal expansion valve and an all-aluminum coil. The cabinet uses foil-faced insulation to reduce condensation, and the coil is built with optimized circuits and manifolds for R-32 refrigerant. Available in upflow and downflow configurations with a 21-inch depth for easier attic access.

  • Factory-installed TXV — thermal expansion valve included for both cooling and heat pump applications.
  • Optimized for R-32 refrigerant — circuits, manifolds, and full-coil R-32 sensor designed for the life span of the coil.
  • All-aluminum evaporator coil — lightweight, corrosion-resistant construction with standardized copper suction tube stub length.
  • Vertical and horizontal mounting — single front access panel for service in either orientation.
  • 21-inch cabinet depth — fits standard attic and closet installations more easily than deeper coils.
  • Foil-faced insulation — reduces cabinet condensation in humid environments.
  • Galvanized leather-grain finish — rust-resistant cabinet with thermoplastic drain pans.
  • DecaBDE-free drain pan — low water-retention design with secondary drain connections.

Why R-32 Refrigerant?

The CAPTA1818B3A is engineered for R-32 — here's how it compares to the outgoing R-410A standard

Feature R-32 (This Coil) R-410A (Old Standard)
Energy Efficiency Up to 10% higher Baseline
Refrigerant Charge Required Up to 30% less Standard
Thermodynamic Performance Superior heat transfer Standard
Regulatory Status Future-ready AIM Act phase-down

Complete Specifications

CAPTA1818B3A — Goodman 1.5 Ton Vertical Coil (R-32 Only)

Model & Configuration
Model Number CAPTA1818B3A
Tonnage Range 1.5 Ton
Cabinet Size B (17-1/2" wide)
Orientation Vertical — Upflow or Downflow
Refrigerant Compatibility R-32 only
Construction
Coil Type All-aluminum (tubing, fins, end plates)
Thermal Expansion Valve Factory-installed TXV
R-32 Leak Detection Factory-installed refrigerant leakage sensor
Drain Pan Thermoplastic, low water-retention, secondary drain connections
Insulation Foil-faced
Cabinet Finish Galvanized, leather grain-embossed
Access Single front access panel
Line Set & Connections
Liquid Line Size 3/8"
Suction Line Size 3/4"
Physical
Shipping Weight 35 lbs

Dimensions

18″
Height
17-1/2″
Width
21″
Depth
35 lbs
Shipping Weight

Warranty Coverage

Protection you can count on when properly registered

10
Year Parts Limited Warranty

Warranty terms require online product registration within 60 days of installation. See official Goodman warranty documents for complete terms and conditions.

Documentation

Manufacturer spec sheets for this product

Coil Spec Sheet
PDF — Tap to download

Frequently Asked Questions

What does an evaporator coil do?
The evaporator coil is the indoor heat-exchange component in a split HVAC system. In cooling mode, refrigerant inside the coil absorbs heat from the indoor air passing over it, cooling and dehumidifying your home. In a heat pump system, the cycle reverses in winter and the coil releases heat into the indoor air instead. The coil must be matched to the outdoor condenser and the indoor airflow system for correct performance.
What does "R-32 Only" mean and why does it matter?
This coil is engineered specifically for R-32 refrigerant and cannot be used with older R-410A or R-22 systems. R-32 has different operating pressures and oil compatibility than legacy refrigerants, so mixing them will damage equipment and void warranties. If your existing outdoor unit uses R-410A or R-22, this coil is not a compatible replacement.
How do I know if this cabinet size fits my furnace or air handler?
Goodman coils use cabinet width codes that match the furnace or air handler beneath them: A = 14" wide, B = 17-1/2" wide, C = 21" wide, D = 24-1/2" wide. The CAPTA1818B3A is a Cabinet B (17-1/2" wide). For best fit, match the coil cabinet letter to your Goodman furnace or air handler cabinet letter. Your HVAC contractor can confirm compatibility with non-Goodman equipment.
Can I pair this coil with my existing condenser?
Only if your condenser uses R-32 refrigerant. For rated efficiency and warranty coverage, the coil should be part of an AHRI-certified matched system — typically a Goodman R-32 condenser or heat pump designed to pair with the CAPTA coil family. Your HVAC contractor can verify AHRI match using the model numbers.
What's a TXV and why does it matter?
A thermal expansion valve (TXV) is a refrigerant metering device that automatically adjusts refrigerant flow into the coil based on cooling demand. Compared to fixed-orifice metering, a TXV maintains more consistent performance across changing indoor and outdoor conditions, improves efficiency, and is required for most modern AHRI-certified matched systems. The CAPTA1818B3A ships with the TXV factory-installed.
What does "Vertical" mean for a coil?
A vertical coil is designed to sit directly above or below a furnace or air handler, with airflow moving vertically through the coil. This coil supports both upflow (air moves upward through the coil from a furnace below) and downflow (air moves downward through the coil from a furnace above) installations. Your contractor will select the orientation based on your home's ductwork layout.
Why all-aluminum construction?
All-aluminum coils (tubing, fins, end plates) resist formicary corrosion — a pinhole-leak failure mode that can affect traditional copper-tube coils, particularly in humid climates or homes exposed to certain common indoor chemicals. Aluminum also transfers heat efficiently and keeps the coil lighter than equivalent copper designs.
How do I register for the 10-year warranty?
Register the unit online at Goodman's warranty registration page within 60 days of installation. You'll need the model number (CAPTA1818B3A), serial number (found on the data plate), installation date, and installing contractor information. Without registration, the warranty reverts to a shorter base term.

Designed, engineered, and assembled in the U.S.A. by Goodman Manufacturing — a member of the Daikin group.