Central Ducted Accessories

  • Cooper&Hunter 5kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH05KW)

    Cooper&Hunter 5kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH05KW)

    $166.00
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  • Cooper&Hunter 10kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH10KW)

    Cooper&Hunter 10kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH10KW)

    $223.00
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  • Cooper&Hunter 15kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH15KW)

    Cooper&Hunter 15kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH15KW)

    $304.00
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  • Cooper&Hunter 20kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH20KW)

    Cooper&Hunter 20kW Auxiliary Heater, Electrical Heater, and Heat Strip for Multi-Position Air Handler (CH-NREH20KW)

    $356.00
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  • Armbridge Condensate Pump AB-C-PUMP-24P

    Armbridge Condensate Pump AB-C-PUMP-24P

    $64.00
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  • MRCOOL | MRCOOL Signature Series Heat Kits – R-454B (Multi-Position & Stud-Mount) | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR ANY QU

    MRCOOL Signature Series Heat Kits – R-454B (Stud-Mount Air Handlers)

    $147.40
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  • MRCOOL (8kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK08)

    MRCOOL (8kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK08)

    208-230V
    $149.00$161.00
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  • MRCOOL | MRCOOL Signature Series Heat Kits – R-454B (Multi-Position & Stud-Mount) | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR ANY QU

    MRCOOL Signature Series Heat Kits – R-454B (Multi-Position Air Handlers)

    $149.24
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  • MRCOOL (5kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK05)

    MRCOOL (5kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK05)

    208-230V
    $150.00
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  • Cooper&Hunter | MRCOOL Universal Series Heat Kits - 5KW, 8KW, 10KW, 15KW, 20KW - R454B | CLICK HERE TO CONTACT US FOR CUSTOM QUOTES AND QUESTIONS CLICK TO CALL US 737-738-6329 FOR ANY QUES

    MRCOOL Universal Series Heat Kits - 5KW, 8KW, 10KW, 15KW, 20KW - R454B

    $181.00
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  • MRCOOL (10kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK10)

    MRCOOL (10kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK10)

    208-230V
    $194.00
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  • MRCOOL (15kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK15)

    MRCOOL (15kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK15)

    208-230V
    $237.00
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  • MRCOOL (20kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK20)

    MRCOOL (20kW VersaPro & Hyper Heat 2nd Gen 454B Heat Kit) Ducted Air Handler Heat Kit, Auxiliary Heater, Electrical Heater(MVPHK20)

    208-230V
    $280.00$290.00
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  • Mini Split Condensate Drain Line - 5/8" x 20'

    Mini Split Condensate Drain Line - 5/8" x 20'

    $29.95
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  • Filter Rack - 20" x 25" x 1"

    Filter Rack - 20" x 25" x 1"

    $73.95
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  • ACIQ 3 Kilowatt Heater Coil for Wall Mount Air Handler

    ACIQ 3 Kilowatt Heater Coil for Wall Mount Air Handler

    $99.00
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The HVACSupplies.com Difference

Focusing on what sets us apart from the rest.
  • 🚀 Fast Shipping: Quick fulfillment on all in-stock items. We move fast so your project stays on schedule.
  • 📦 Vast Inventory: A large selection of premium brands and systems ready to ship from our national distribution network.
  • 📞 Real Support: Get friendly help from actual HVAC experts. We provide the technical guidance you won't find on big-box sites.
  • 💰 Bulk Savings: Planning a large project? We offer better pricing on larger orders and custom packages.

What are HVAC Accessories & Kits?

From a technical perspective, the quality of these accessories directly impacts the longevity and safety of your system. Using undersized wiring or improper refrigerant piping can lead to equipment failure or reduced efficiency. Our kits are curated to meet rigorous industrial standards, ensuring that every connection is secure and every unit is properly mounted to withstand environmental stressors.

Having the right accessories on hand is essential for a smooth installation day. Our comprehensive collection ensures you have access to necessary line sets, specialized control wires, and heavy-duty mounting brackets all in one place. By sourcing these vital components together, you eliminate the risk of mismatched parts and ensure your installation meets manufacturer specifications for warranty compliance.

Technical Highlights & Specifications

For HVAC buyers looking for specific data, our accessory kits are designed to complement modern equipment standards:

  • Efficiency Standards: High-quality insulated line sets help maintain SEER2 and HSPF2 efficiency by preventing thermal loss during refrigerant transfer.
  • Refrigerant Compatibility: Our components are fully compatible with modern R454B and R32 refrigerants, ensuring your system remains compliant with the latest environmental regulations.
  • Voltage Requirements: We offer various gauge options for control and power wiring; please verify if your system requires 115V or 230V compatible electrical accessories.
  • Durability Specs: Mounting brackets are rated for specific weight capacities and feature corrosion-resistant finishes for long-term outdoor exposure.

Operational Benefits

  • System Protection: Quality accessories shield your sensitive HVAC electronics and refrigerant lines from weather damage and vibration.
  • Installation Speed: All-in-one kits reduce the time spent sourcing individual parts, allowing contractors to complete jobs faster.
  • Commercial Reliability: Heavy-duty mounting solutions provide the structural integrity needed for large-scale rooftop or multi-story commercial applications.
  • Enhanced Safety: UV-resistant line covers and high-grade electrical whips ensure your residential installation meets or exceeds local building codes.

Find Your Perfect Match: The HVAC Supplies BTU Sizing Guide

Selecting the correct BTU (British Thermal Units) capacity is the most critical step in ensuring your ductless system operates at peak efficiency while providing maximum comfort. At HVAC Supplies, we aim to eliminate the guesswork; an undersized unit will run constantly and drive up utility bills, while an oversized unit will cycle too frequently, leading to poor dehumidification and unnecessary wear.

Below is our comprehensive sizing guide designed for HVAC Supplies customers, featuring direct links to our high-efficiency mini split collections.

6,000 BTU
150 – 250 sq. ft.
Small bedrooms, home offices, nurseries, or high-efficiency “tiny homes”.
9,000 BTU
250 – 450 sq. ft.
Standard bedrooms, guest rooms, mid-sized offices, and insulated sunrooms.
12,000 BTU
450 – 600 sq. ft.
Master bedrooms, small living rooms, kitchens, or studio apartments.
18,000 BTU
600 – 1,000 sq. ft.
Large living rooms, master suites, or insulated 1-car garages.
24,000 BTU
1,000 – 1,200 sq. ft.
Open-concept main floors, 2-car garages, or small retail boutiques.
28,000 BTU
1,200 – 1,400 sq. ft.
Large open floor plans, community halls, or multi-room office suites.
30,000 BTU
1,400 – 1,500 sq. ft.
Large workshops, pole barns, or medium-sized commercial floor plans.
36,000 BTU
1,500 – 1,700 sq. ft.
Large residential open areas, showrooms, coffee shops, or fitness studios.
42,000 BTU
1,700 – 1,900 sq. ft.
Commercial spaces, restaurants, medical clinics, or church halls.
48,000 BTU
1,900 – 2,100 sq. ft.
Very large open residential areas, small warehouses, or banquet facilities.
55,000 BTU
2,100 – 2,400 sq. ft.
Large retail stores, high-ceiling industrial spaces, or commercial grow rooms.
60,000 BTU
2,400 – 2,800+ sq. ft.
Large warehouses, multi-office buildings, or massive high-ceiling estates.

When to "Size Up" Your Unit

While the table above provides a baseline for standard rooms, specific environmental factors at your job site may require a higher BTU capacity:

•
High Ceilings: If your ceilings are 10 feet or higher, you are cooling a larger volume of air. We recommend increasing your BTU choice by 20%.
•
Insulation Levels: For older buildings with single-pane windows or poor insulation, opt for the next size up to ensure the system can maintain the set temperature.
•
Kitchen Installations: Cooking appliances generate significant heat. If the unit is for a kitchen area, add 4,000 BTUs to your total calculation.
•
Heavy Sun Exposure: Rooms with large south-facing windows act like greenhouses. Increase your BTU capacity by 10-15% for these spaces.
•
High Occupancy: If the area regularly hosts more than two people (such as a conference room), add 600 BTUs per additional person.
Need Expert Sizing Assistance?
If you aren't sure which unit is right for your specific project contact our USA-based support team for a custom recommendation. As your dedicated supply partner, we are here to ensure you get the right equipment the first time.

Frequently Asked Questions

Q. Why can’t I just buy a generic line set from a local hardware store?

A. HVAC systems require specific copper diameters and insulation thicknesses to handle high-pressure refrigerants and prevent condensation. Our kits are pre-matched to ensure the copper wall thickness is sufficient for modern high-pressure systems like those using R454B.

Q. How do I know which length of line set to order?

A. You should measure the distance between your indoor unit and outdoor condenser, including any bends or turns. Most residential installs use 15ft, 25ft, or 50ft lengths. Remember, choosing a line set that is too long or too short can affect the refrigerant charge and system efficiency.

Q. Does this kit include the electrical whip and disconnect box?

A. Many of our "Full Installation Kits" include the whip and disconnect, but some "Basic Kits" focus only on the refrigerant lines. Always check the "What's Included" section on the product page or call us at 1-800-543-8933 to verify.

Q. Are the mounting brackets included, or do I need to buy them separately?

A. Because every home is different—some require ground pads while others need wall brackets—mounting solutions are typically sold as individual add-ons or as part of our "Premium Bundles." We offer a wide variety of brackets rated for different system weights.

Q. Do these accessories affect my manufacturer's warranty?

A. Using sub-standard or incorrectly sized accessories can lead to system failure, which may void your warranty. Our accessories are selected to meet or exceed manufacturer specifications, keeping your warranty intact when installed by a licensed professional.