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MRCOOL Downflow Kit, MSHDK3660

SKU MSHDK3660
by MRCOOL
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$186.00

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Description

MRCOOL Downflow Kit for Signature Series (MSHDK3660)

Unlock Versatility and Professional Results on Every Job

Picture this: you arrive at a client’s site, fully prepared to handle any installation challenge—whether it’s a new construction with slab ductwork or a retrofit in a commercial space with unique airflow needs. With the MRCOOL Downflow Kit (MSHDK3660) for Signature Series, you’re equipped to transform standard upflow units into reliable downflow solutions, expanding your service offerings and capturing more business in every market you serve.

As a business owner who manages large-scale installs and bulk orders, you know that flexibility is key to profitability. This downflow kit is purpose-built for MRCOOL Signature Series units, providing a seamless, code-compliant fit that ensures every installation is smooth, efficient, and professional. No more makeshift modifications or compatibility concerns—just the confidence that comes from using genuine MRCOOL accessories designed for your equipment.

Engineered for Efficiency, Built for the Jobsite
  • Precision Compatibility: Designed exclusively for MRCOOL Signature Series units, delivering a perfect fit and hassle-free installation every time.
  • Rugged Reliability: Constructed for durability, this kit stands up to the demands of busy jobsites, frequent handling, and long-term use.
  • All-Inclusive Design: Everything your team needs is in the box—no missing parts, no delays, just straightforward installation.
The Contractor’s Advantage
  • Expand your project capabilities: Effortlessly convert upflow units to downflow, making you the go-to expert for any residential or commercial scenario.
  • Streamline inventory and workflow: Stock up with confidence; the compact design is easy to store, and ideal for bulk purchasing so your crews are always ready.
  • Deliver on every promise: Meet client needs with genuine, code-compliant solutions that minimize callbacks and maximize satisfaction.
Elevate Your Reputation—and Your Bottom Line

Imagine your business with the agility to take on more projects, the expertise to solve unique airflow challenges, and the reputation for always being prepared. The MRCOOL Downflow Kit (MSHDK3660) empowers you to deliver professional-grade solutions, job after job, with the reliability and trust only MRCOOL can offer.

Choose MRCOOL and turn every installation into an opportunity for success and growth.

PRODUCT SPECIFICATIONS:

Product Dimensions 25"W x 30"D x 7"H
Equipment Type Downflow Kit
Color Combination Pack
Registered Warranty N/A
Proposition 65 Warning Yes
Restricted States GU PR;VI
Weight 11 lbs
Freight Class 250
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US
Request an Installer

Product Overview

  • Zone / ROOM:

    Zone / ROOM:

  • Air Handler BTU:

    Air Handler BTU:

  • Condenser BTU:

    Condenser BTU:

  • Outdoor Operating Temp (Cool/ heat):

    Outdoor Operating Temp (Cool/ heat):

  • Warranty

    Warranty

Description

MRCOOL Downflow Kit for Signature Series (MSHDK3660)

Unlock Versatility and Professional Results on Every Job

Picture this: you arrive at a client’s site, fully prepared to handle any installation challenge—whether it’s a new construction with slab ductwork or a retrofit in a commercial space with unique airflow needs. With the MRCOOL Downflow Kit (MSHDK3660) for Signature Series, you’re equipped to transform standard upflow units into reliable downflow solutions, expanding your service offerings and capturing more business in every market you serve.

As a business owner who manages large-scale installs and bulk orders, you know that flexibility is key to profitability. This downflow kit is purpose-built for MRCOOL Signature Series units, providing a seamless, code-compliant fit that ensures every installation is smooth, efficient, and professional. No more makeshift modifications or compatibility concerns—just the confidence that comes from using genuine MRCOOL accessories designed for your equipment.

Engineered for Efficiency, Built for the Jobsite
  • Precision Compatibility: Designed exclusively for MRCOOL Signature Series units, delivering a perfect fit and hassle-free installation every time.
  • Rugged Reliability: Constructed for durability, this kit stands up to the demands of busy jobsites, frequent handling, and long-term use.
  • All-Inclusive Design: Everything your team needs is in the box—no missing parts, no delays, just straightforward installation.
The Contractor’s Advantage
  • Expand your project capabilities: Effortlessly convert upflow units to downflow, making you the go-to expert for any residential or commercial scenario.
  • Streamline inventory and workflow: Stock up with confidence; the compact design is easy to store, and ideal for bulk purchasing so your crews are always ready.
  • Deliver on every promise: Meet client needs with genuine, code-compliant solutions that minimize callbacks and maximize satisfaction.
Elevate Your Reputation—and Your Bottom Line

Imagine your business with the agility to take on more projects, the expertise to solve unique airflow challenges, and the reputation for always being prepared. The MRCOOL Downflow Kit (MSHDK3660) empowers you to deliver professional-grade solutions, job after job, with the reliability and trust only MRCOOL can offer.

Choose MRCOOL and turn every installation into an opportunity for success and growth.

PRODUCT SPECIFICATIONS:

Product Dimensions 25"W x 30"D x 7"H
Equipment Type Downflow Kit
Color Combination Pack
Registered Warranty N/A
Proposition 65 Warning Yes
Restricted States GU PR;VI
Weight 11 lbs
Freight Class 250
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US

Commercial HVAC PROS!

Unlock Installer Benefits Now:

  • ✓ Exclusive BULK Pricing
  • ✓ Limited Time Deals
  • ✓ Unmatched Service & Support
  • ✓ Technical support
  • ✓ Extended Warranty & Maintenance
"Their technical expertise in commercial HVAC systems is outstanding. From equipment selection to installation support, they provided everything we needed. The bulk pricing saved us thousands on our multi-building project, and their 24/7 technical support kept us running smoothly."
- Marcus R., HVAC Project Manager, 06/24

You'll hear from us during business hours

Request an Installer

Need Professional Installation?

Get Connected with Certified HVAC Installers:

  • ✓ Pre-Vetted, Licensed & Insured Installers
  • ✓ 2-3 Local Options in Your Area
  • ✓ Specialists in Your Equipment Type
  • ✓ Competitive, Transparent Pricing
  • ✓ Fast Response - Within 24 Hours

How it works:

1. Fill out the form below with your project details
2. We'll match you with 2-3 qualified installers in your area
3. Installers contact you directly with quotes and availability
4. You choose the best fit for your project

"I bought a heat pump online but wasn't sure about installation. HVAC Hive connected me with three local contractors within hours. I chose one based on reviews and pricing - he installed it perfectly the next week. Made the whole process so much easier!"
- Jennifer M., Homeowner, Phoenix AZ

✓ No obligation quotes | ✓ All installers background checked | ✓ Free service - you only pay the installer

We'll connect you with installers within 48 hours during business days

Frequently Asked Questions about MRCOOL Downflow Kit, MSHDK3660

Most Frequently Asked Questions

The MRCOOL Downflow Kit MSHDK3660 is used to convert compatible MRCOOL mini split indoor units, typically 36,000 BTU models, from an upflow or horizontal airflow configuration to a downflow configuration, directing conditioned air downward to better suit specific room layouts and heating or cooling needs.
The MRCOOL MSHDK3660 Downflow Kit is compatible with MRCOOL 36,000 BTU single-zone and multi-zone mini split indoor units, such as the DIY 36,000 BTU single-zone and selected multi-zone indoor units; for exact model compatibility, it's best to consult MRCOOL’s official documentation or customer support.
Yes, professional HVAC service is recommended for installing the MRCOOL MSHDK3660 Downflow Kit to ensure proper installation, correct airflow configuration, and safe, efficient system operation.

Other Questions

The MRCOOL MSHDK3660 Downflow Kit typically includes components such as a modified air discharge grille, duct adapters or deflectors, mounting hardware, and detailed installation instructions needed to convert compatible indoor mini split units from upflow to downflow airflow configuration.
Yes, the MRCOOL MSHDK3660 Downflow Kit is specifically designed to convert compatible MRCOOL mini split indoor units from an upflow (horizontal) to a downflow airflow configuration, allowing for flexible installation to better suit room layouts and heating or cooling needs.

Reviews

Express Free Shipping

Process orders within 1-2 days

Stress Free Returns

Get Covered for (730 days) Returns

Premum Quality

Top Tier Products, Even Better Customer Care

5 Year Warranty

We Believe In Our Products & Our Team