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42-48k PRODIRECT Series A Coil - 21in
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ProDirect·Pro InstallIndoor Unit Only

42-48k PRODIRECT Series A Coil - 21in

Component — Not a Complete System

This is the indoor unit only. To run, you also need a matching outdoor condenser and a refrigerant line set. Looking for the complete system instead? Browse complete 42 BTU systems.

SKU HCMP4248CFOA

42 BTUup to 450 sq ft
$646.00
Pay over time withAffirmaffirmKlarnaKlarna— see your options at checkout.
In Stock — Ships within 1-3 days

Customize it — compatible add-ons only

This A-coil is rated for ProDirect condensers in this capacity range.

Seals the coil casing to the furnace for a clean transition.

Universally compatible tools and care items — maintenance kit, coil cleaner, install tools.

5 Years warranty · Covers up to 450 sq ft
Ships nationwide · exact freight at checkout · Ships in 1-3 business days
30-day returns on unopened products · See policy
Secure checkout:Visa · Mastercard · Amex · Discover

Sizing Help

Not sure if 0K BTU is right for your space?

Proper sizing prevents short-cycling, high bills, and premature failure. Our sizing tool takes 60 seconds.

Match My SpaceOr call (657) 582-0899

Resources

Brochures & Manuals

Performance SpecsInstall ManualWarranty

Description

42-48k PRODIRECT Series A Coil - 21in

What's in the Box

Here's what you'll receive with your order

42-48k PRODIRECT Series A Coil - 21in

As described

2 Years compressor warranty
Compressor: 2 Years warrantyParts: 1 Year warranty

Key Specifications

42,000/48,000BTU

Cooling Capacity

42-48k PRODIRECT Series A Coil - 21in — Model Details

What this specific model is sized for, how it installs, how it performs, and what it costs to run.

Room & Space Coverage — 42 BTU

The 42-48k PRODIRECT Series A Coil - 21in delivers 42 BTU of cooling and heating capacity, sized for spaces up to 450 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit targets small rooms, nurseries, tiny homes, enclosed porches, and dedicated zones that need precise temperature control without oversizing — oversized units short-cycle, which hurts humidity control and shortens compressor life.

Install Difficulty — Professional Install

This is a professionally-installed condenser that requires a licensed HVAC technician with EPA 608 certification. The tech will pull a vacuum on the line set to 500 microns, pressure-test with nitrogen, release the factory charge, and commission per MrCool's startup procedure. Budget 1 full day for install on a single-zone system.

Product Details

The PRODIRECT™ Series A Coil is the ultimate solution for maximizing the performance and efficiency. Built for compatibility with both R410A and R22 refrigerants, this coil seamlessly integrates into PRODIRECT™ systems. It features a robust heat exchanger with advanced aluminum fins and internally grooved copper tubing, ensuring superior heat transfer and exceptional durability. Designed with practicality in mind, the coil is housed in a thermally insulated cabinet lined with foil-faced insulation, effectively preventing condensation and boosting overall system efficiency. Its versatile multi-positional design allows for easy installation in various settings, and dual drain pans simplify maintenance tasks. With a 19-½ inch supply duct, you can easily adapt it to fit diverse HVAC configurations. Measuring 30 inches in height and 21 inches in width, the PRODIRECT™ Series A Coil is versatile enough to accommodate a range of systems. It includes a 3/8-inch liquid line and a 7/8-inch suction line for standard HVAC compatibility. Plus, with UL certification, you can trust that it meets the highest safety and quality standards. Backed by a standard 5-year warranty plus an additional 5-year extended warranty when installed with an approved MRCOOL® Condenser, this coil is your reliable choice for your home.

Specifications

Cooling Capacity42 BTU
Liquid Line Size3/8
Suction Line Size7/8

Features

  • Multiposition installation
  • Evaporator Coil Tube Material: Aluminum
  • Evaporator Coil Tube Size(in.): 9/32
  • Supply Duct(in.): 19 1/2

Frequently Asked Questions

Everything you need to know about this product

What size room will the 42-48k PRODIRECT Series A Coil - 21in cool?

At 42 BTU this unit is sized for rooms up to 450 sq ft under standard 8-ft ceilings with average insulation. Add 10–20% for sun-exposed rooms, poorly insulated spaces, or ceilings above 9 ft.

Do I need a licensed HVAC installer?

Yes — this unit is professionally-installed. The installer needs EPA 608 certification to handle the refrigerant, plus standard HVAC tools (vacuum pump, manifold gauges, nitrogen kit). Expect a one-day install on a single-zone system, more on multi-zone.

How fast does HVACZAR ship this unit?

Shipping is calculated at checkout from the order weight, and you see the exact charge before paying. In-stock SKUs leave the warehouse within 1–3 business days. Transit time is 3–7 business days via truck freight (with liftgate delivery) for outdoor units and UPS Ground for accessories. Tracking is emailed at pickup.

What if it arrives damaged or I change my mind?

Inspect the unit before signing for freight delivery. If there is visible damage, note it on the delivery receipt and refuse the shipment — we ship a replacement at no cost. Unopened and unused units can be returned within 30 days for a refund less outbound shipping.

What is the warranty on the 42-48k PRODIRECT Series A Coil - 21in?

The 42-48k PRODIRECT Series A Coil - 21in comes with a 5 Years manufacturer warranty when purchased from HVACZAR, an authorized MrCool dealer. Register your unit after purchase to activate full warranty coverage.

How long does shipping take?

Shipping is calculated at checkout from the order weight. Most MrCool systems ship within 1-3 business days and arrive in 3-7 business days via FedEx, UPS, or truck freight with liftgate delivery.

What size room does 42 BTU cover?

A 42 BTU unit is sized for rooms up to 450 sq ft. Proper sizing depends on ceiling height, insulation, climate zone, and window exposure. Use our system finder for a precise recommendation.

Do you offer returns?

Yes. HVACZAR offers a 30-day return policy on unopened, unused products in original packaging. Contact us to initiate a return and receive a return authorization number.

How can I pay?

We accept all major credit cards (Visa, Mastercard, American Express, Discover) via Stripe secure checkout. All transactions are encrypted and protected.

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Ships Nationwide — Shop by State

We deliver the 42-48k PRODIRECT Series A Coil - 21in to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.

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