Disconnect Switch & Electrical Whip Kits for Heat Pump and A/C Condensers (9K–60K BTU)
Disconnect Switch & Electrical Whip Kits for Heat Pump and A/C Condensers (9K–60K BTU)
Disconnect Switch & Electrical Whip Kits for Heat Pump and A/C Condensers (9K–60K BTU)
$98.87
/
Sizing Guide
HVAC Sizing Guide
Choose the right capacity for mini splits, multi-zone systems, central ducted heat pumps, dual fuel, packaged units, and AC-only condensers. Built for clarity, speed, and confidence—by Freedom HVAC Supply.
How to Think About Sizing
Sizing is about matching equipment output (BTU/hr or tons) to your home’s design heating and cooling loads. The most accurate method is a Manual J load calculation. When you can’t run one, use our Quick Calculator, then confirm with the tables below.
Key Inputs
- Square footage & ceiling height (volume)
- Climate (hot/mild/cold), sun exposure, window area
- Insulation & air-sealing quality
- Occupancy & internal gains (kitchen, electronics)
Right-Sizing Goals
- Avoid oversizing: short cycling, humidity issues, higher cost
- Avoid undersizing: won’t hit setpoint in extremes
- Prefer inverter equipment with good turndown
Tip: 12,000 BTU/hr ≈ 1 ton. Typical comfort airflow is ~350–450 CFM per ton.
Quick Sizing Calculator
Get a ballpark BTU/hr. This does not replace a Manual J—use it to shortlist sizes before you pick equipment.
Rule-of-Thumb BTU per Sq Ft (Cooling)
Use these to sanity-check the calculator. Values assume average internal gains and typical window area.
| Climate | Good Shell | Average Shell | Poor/Leaky Shell |
|---|---|---|---|
| Mild | 16–20 | 20–24 | 24–30 |
| Hot/Humid | 20–24 | 24–30 | 30–36 |
| Cold (cooling) | 17–21 | 21–26 | 26–32 |
| Very Cold (cooling) | 16–20 | 20–24 | 24–30 |
For heating, very cold climates can run 25–50 BTU/sq ft+ depending on envelope and design temp; verify heat pump low-temp capacity and consider auxiliary/dual fuel.
Single-Zone Mini Splits
Match one indoor unit to one outdoor unit. Ideal for targeted rooms, additions, or garage conversions.
Common Sizes & Typical Coverage
| Nominal Size | BTU | Typical Coverage | Notes |
|---|---|---|---|
| 6k | 6,000 | 150–300 sq ft | Small bedrooms, offices |
| 9k | 9,000 | 250–400 sq ft | Bedrooms, medium offices |
| 12k | 12,000 | 350–600 sq ft | Living rooms, larger beds |
| 18k | 18,000 | 600–900 sq ft | Great rooms, big studios |
| 24k | 24,000 | 900–1,200 sq ft | Open concept areas |
Always check the actual capacity curves: many inverter systems deliver more/less than nameplate at high/low outdoor temps.
Selection Checklist
- Confirm wall/ceiling cassette airflow and throw meet room geometry
- Verify heating capacity at design outdoor temp
- Dehumidification performance (latent capacity) in humid climates
- Electrical: voltage, MCA/MOP, breaker size
Multi-Zone Mini Splits
One outdoor condenser serving multiple indoor heads (wall, ceiling cassette, slim-ducted). Great for homes without full ductwork.
How to Size
- Calculate the load for each zone/room (use Quick Calculator per room as a proxy).
- Sum the indoor unit BTUs you intend to install.
- Apply a diversity factor (commonly 0.75–0.9) if not all zones peak together.
- Select an outdoor unit whose rated capacity meets the diversified sum at your design temp.
Example Diversified Sizing
| Zones | Indoor BTUs | Sum | Diversity (0.85) | Pick Outdoor |
|---|---|---|---|---|
| 3 | 9k + 9k + 12k | 30k | 25.5k | ~27–30k |
| 4 | 6k + 9k + 9k + 12k | 36k | 30.6k | ~30–36k |
| 5 | 9k + 9k + 9k + 12k + 12k | 51k | 43.4k | ~42–48k |
Don’t oversize the outdoor unit far above the diversified sum—low turndown + many small heads can cause short cycling.
Multi-Zone Tips
- Each head must meet its room’s minimum load even when other zones are off.
- Check minimum connected capacity rules and port combinations in the manufacturer tables.
- Long line set runs and elevation changes affect capacity—account for them.
Central Ducted Heat Pumps
Whole-home comfort via existing or new ductwork. Inverter ducted systems provide great efficiency and comfort if ducts are sized and sealed properly.
Whole-Home Sizing (Quick)
| Home Size | Typical Cooling | Typical Heating (cold climates) | Common Nominal |
|---|---|---|---|
| 800–1,200 sq ft | 1.5–2.0 tons | 24k–36k BTU | 18k–24k / 2.0 ton |
| 1,200–1,800 sq ft | 2.0–3.0 tons | 36k–48k BTU | 24k–36k / 2–3 ton |
| 1,800–2,400 sq ft | 3.0–4.0 tons | 48k–60k BTU | 36k–48k / 3–4 ton |
| 2,400–3,000 sq ft | 4.0–5.0 tons | 60k–72k BTU | 48k–60k / 4–5 ton |
Confirm cooling and low-temperature heating capacity at your design outdoor temp. Balance point and defrost strategy matter.
Ducted Heat Pump Checklist
- Airflow: target 350–450 CFM/ton; verify blower curves vs. external static pressure (ESP)
- Ducts: size, seal (mastic), and insulate; keep total ESP ≤ 0.5 in. w.c. (typical)
- Heat strips (aux): size to cover shortfall below balance point (e.g., 5–15 kW depending on climate)
- Thermostat/controls: match staging, dehumidify and heat strip lockouts
Central Ducted Dual Fuel (Heat Pump + Furnace)
Best of both: heat pump handles mild/cool weather; gas furnace takes over in very cold temps or for backup.
Sizing Approach
- Size the heat pump to meet most cooling load and a significant share of heating load above the economic switchover temperature.
- Size the furnace to meet the design heating load at the coldest design temp.
- Use controls to set switchover based on outdoor temp/utility rates.
| Home Size | HP (Cooling Nominal) | Furnace Input (typical) | Notes |
|---|---|---|---|
| 1,200–1,800 sq ft | 2–3 ton | 60–80k BTU | High altitude may require derate |
| 1,800–2,400 sq ft | 3–4 ton | 80–100k BTU | Match cased coil & blower |
| 2,400–3,200 sq ft | 4–5 ton | 100–120k BTU | Balance duct sizing & ESP |
Confirm coil match for AHRI ratings (efficiency + capacity) and proper TXV/orifice for heat pump mode.
Central Ducted Package Units (Heat Pump / Dual Fuel / AC)
All-in-one rooftop or pad units. Great for tight mechanical spaces or simple replacements.
Quick Selection
| Application | Typical Range | Notes |
|---|---|---|
| Packaged Heat Pump | 2–5 ton | Verify low-ambient heating tables; defrost & strip heat sizing |
| Packaged Gas/Electric (Dual Fuel) | 2–5 ton / 60–120k BTU | Match gas input to design heat; confirm economizer options |
| Packaged AC-Only | 2–5 ton | Ensure coil/airflow for latent removal in humid climates |
AC-Only Condensers (Split Systems)
Cooling-only systems paired with a matching indoor coil and air handler or furnace.
Sizing by Area (Cooling)
| Home Size | Typical Tons | Airflow Target | Notes |
|---|---|---|---|
| 800–1,200 sq ft | 1.5–2.0 | 525–900 CFM | High humidity → choose higher SHR coils/controls |
| 1,200–1,800 sq ft | 2.0–3.0 | 700–1,350 CFM | Dehumidify mode or reheat helpful |
| 1,800–2,400 sq ft | 3.0–4.0 | 1,050–1,800 CFM | Verify return grille capacity |
| 2,400–3,000 sq ft | 4.0–5.0 | 1,400–2,250 CFM | Ducts often the limiting factor |
Matching Coils & Furnaces
- Use AHRI-matched coil for stated SEER2/EER2/Capacity
- Furnace blower must deliver required CFM at expected ESP
- Consider TXV vs. fixed orifice for better part-load control
Ducting & Airflow Essentials
Targets
- 350–450 CFM per ton (cooling), 400 CFM/ton is a common design point
- Total ESP: aim ≤ 0.5 in. w.c. unless equipment allows higher
- Return grille area: ~2 sq in per CFM (rule of thumb)
Best Practices
- Short, straight runs; wide, smooth radius elbows
- Seal with mastic; insulate in unconditioned spaces
- Balance dampers for room-by-room comfort
Electrical & Breaker Considerations
- Match nameplate voltage/phasing (e.g., 208/230V single-phase)
- Use manufacturer MCA (Minimum Circuit Ampacity) and MOP for wire/breaker
- Heat strips add significant amperage—size feeders accordingly
Always follow the unit’s installation manual and local electrical code.
Need a Second Set of Eyes?
Send us your square footage, climate, insulation level, and any plans (rooms/zones). Freedom HVAC Supply can validate your picks and suggest compatible kits.
Frequently Asked Questions
Do I really need a Manual J?
For best results, yes. Our calculator and tables are for screening. A Manual J accounts for windows, orientation, infiltration, and local design temperatures, giving the most accurate answer.
How do I size multi-zone mini splits without oversizing?
Start with room loads, pick heads that meet each room’s minimum/maximum, sum them, then apply a diversity factor (often 0.75–0.9). Choose an outdoor unit that meets the diversified sum at design conditions and supports your port combination.
What’s the difference between nameplate and actual capacity?
Inverter equipment can modulate. Actual capacity changes with outdoor temperature, indoor setpoints, and airflow. Check the manufacturer’s capacity tables (cooling & heating) for your design temps.
How much airflow do I need?
Aim for 350–450 CFM per ton in cooling. Verify your blower tables at expected ESP. If you can’t deliver the airflow, reduce external static (better ducts/filters) or select equipment with higher blower capability.
Should I choose dual fuel?
In very cold climates or where gas is inexpensive, dual fuel offers comfort and cost control. Let the heat pump run above the switchover temperature; furnace handles deep cold and faster recovery.
Any quick coverage rules of thumb?
- Mini split 9k: ~250–400 sq ft, 12k: ~350–600, 18k: ~600–900 (varies by climate/shell)
- Whole-home: 2–3 tons for ~1,200–1,800 sq ft (verify!)
- Heating in cold climates often governs size more than cooling—check low-ambient tables
Disclaimer: This guide provides general guidance only and does not replace a licensed design or Manual J/JS/D. Always follow manufacturer instructions and local codes.
){kind=link}
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Disconnect Switch & Electrical Whip Kits
Complete, code-conscious power kits for ductless mini split condensers from 9,000 to 60,000 BTU. Choose #10 AWG (1/2" x 6 ft) or #8 AWG (3/4" x 6 ft) to match your system’s amperage needs and streamline a safe, professional installation.
Available Options
#10 AWG Kit — Standard Power
- Compatible: 9K, 12K, 18K, 24K, 27K BTU condensers
- Whip: 1/2" x 6 ft electrical whip with flexible conduit
- Connector Size: 1/2" weather-tight connectors (for unit/electrical box knockouts)
- Wire Gauge: 10 AWG
Right-sized for lower-capacity systems. Provides reliable power delivery without overloading smaller units.
#8 AWG Kit — Heavy-Duty Power
- Compatible: 27K, 36K, 48K BTU condensers
- Whip: 3/4" x 6 ft electrical whip with flexible conduit
- Connector Size: 3/4" weather-tight connectors (for unit/electrical box knockouts)
- Wire Gauge: 8 AWG
Built for higher amperage and minimal voltage drop on larger systems.
What’s Included
- Non-fusible HVAC disconnect switch
- Pre-wired electrical whip (6 ft flexible conduit)
- Weather-tight connectors (1/2" for #10 AWG kit, 3/4" for #8 AWG kit)
- Locknuts and fittings for secure, weather-resistant connections
- Durable outdoor-rated conduit
Features & Benefits
- Right Gauge, Right Fit: Choose #10 or #8 AWG to match condenser capacity.
- Faster Installs: Pre-wired whip and included connectors save time on site.
- Service Safety: External disconnect supports safe maintenance procedures.
- Broad Compatibility: Works with most mini split brands (MrCool, Daikin, GWIN, Goodman, etc.).
Specifications
| Feature | #10 AWG Kit | #8 AWG Kit |
|---|---|---|
| BTU Range | 9K–27K | 27K–48K |
| Whip & Conduit | 1/2" x 6 ft | 3/4" x 6 ft |
| Connector Size (Weather-Tight) | 1/2" | 3/4" |
| Voltage / Frequency | 208/230V, 60Hz | |
The recommendations below are general guidelines. Always follow the equipment nameplate, breaker sizing, and local electrical code. When in doubt, consult a licensed electrician.
Single Zone Condenser
- 9K, 12K – #12 Minimum, #10 Preferred
- 18K – #10 Preferred
- 24K – #10 Preferred
- 36K – #10 Preferred
Multi-Zone Condenser
- 18K – #12 Minimum, #10 Preferred
- 27K – #10 Preferred
- 36K – #10 Preferred
- 48K – #8 Preferred
- 60K – #8 Preferred
Central Ducted / Package
- 18K – #12 Minimum, #10 Preferred
- 27K – #10 Preferred
- 36K – #10 Preferred
- 48K – #8 Preferred
- 60K – #8 Preferred
Compatibility
Verify knockout size on your specific unit; this kit includes 1/2" (for #10 AWG kit) or 3/4" (for #8 AWG kit) weather-tight connectors.
Important: Always follow the appliance nameplate, NEC/local codes, and breaker sizing requirements. Conductor length, ambient temperature, and installation method may affect final conductor selection.
Why Choose Freedom HVAC Supply Kits?
Our disconnect switch and electrical whip kits make mini split installations faster and safer. With weather-tight connectors in the correct size, outdoor-rated 6 ft flexible conduit, and your choice of #10 or #8 AWG, your ductless condenser gets clean, reliable power that meets modern installation standards.
FAQ
Q: Which kit should I choose?
A: Generally, choose #10 AWG (1/2") for 9K–27K systems, and #8 AWG (3/4") for 27K–48K. Always confirm against the unit’s nameplate and local code.
Q: Does this work with 208/230V systems?
A: Yes. Both kits are suitable for typical 208/230V, 60Hz mini split condensers.
Q: Are the connectors included?
A: Yes. The #10 kit includes 1/2" weather-tight connectors; the #8 kit includes 3/4" weather-tight connectors.
About Freedom HVAC Supply
Welcome to Freedom HVAC Supply – your trusted nationwide source for high-performance, affordable, and reliable HVAC parts, tools, and equipment. We proudly serve homeowners, contractors, and professionals across the United States with industry-leading products from MRCOOL, Daikin, Goodman, and more.
Revolutionizing How HVAC Products Are Bought & Sold
For decades, the HVAC industry followed a strict path: manufacturers sold to distributors, distributors sold to contractors, and the general public was left out. At Freedom HVAC Supply, we’re proud to say — we’re not doing it that way.
We believe everyone deserves access to high-quality HVAC products at fair, transparent prices. Whether you're a licensed HVAC contractor, an experienced installer, or a homeowner tackling your own project, we make it simple to get the equipment you need without the industry gatekeeping.
Who We Are
Freedom HVAC Supply was founded by a team of seasoned HVAC professionals with decades of field experience. We understand the real-world challenges faced by HVAC technicians, DIYers, and contractors — because we’ve lived them. Our mission is simple: to make high-quality HVAC systems, tools, and accessories accessible to everyone, with expert guidance and unbeatable support.
What We Offer
- Nationwide shipping on HVAC parts, tools, and equipment
- Industry-leading brands including MRCOOL, Daikin, Goodman, and Amana
- Authorized dealer pricing and volume discounts
- Live expert support from real HVAC pros
- DIY-friendly guides and contractor-ready solutions
Why Choose Freedom HVAC Supply?
We're not just another HVAC parts supplier — we are partners in your comfort and your craft. Every product we carry has been vetted for performance and reliability. Our team stays on top of HVAC trends, refrigerant regulations, and emerging technologies so you don't have to. Whether you're replacing a mini split, installing a complete ducted system, or just need reliable tools for the job, we're here to help.
- 100% Secure Checkout: All purchases are protected with 256-bit SSL encryption.
- Expert Help: Our techs and sales team offer real guidance — not just upsells.
- Free Shipping: Most systems ship free via FedEx or freight — insured, fast, and secure.
- No Hidden Fees: Transparent pricing and policies you can trust.
Stepping Outside the Box
The old model is fading. Freedom HVAC Supply is leading a new era — where the walls between manufacturer and customer are removed. No middleman, no games. Just fast, honest access to the parts and equipment you need.
We don't just sell boxes — we build solutions. We challenge the status quo by giving power back to the buyer, saving you time and money without sacrificing quality. That’s why contractors love us, and homeowners trust us.
Join the Movement
Whether you're building your business, upgrading your system, or taking on your first DIY HVAC project — we’re here to help you succeed.
Welcome to Freedom HVAC Supply. Let’s make heating and cooling better, together.
Shipping Policy
At Freedom HVAC Supply, we strive to offer fast, reliable, and transparent shipping for every order. We occasionally offer Free Shipping on HVAC systems and select items shipped via FedEx Ground, FedEx Freight, or LTL carriers.
🚚 Shipping Methods & Delivery
- Delivery dates shown on our website are estimates and may vary based on warehouse processing times and courier schedules.
- All shipments include one delivery attempt. Missed or rescheduled deliveries may incur courier-assessed fees.
- Once an order is staged or shipped, the shipping address cannot be changed.
🏗️ Large HVAC Systems (LTL Freight)
- The freight carrier will contact you to schedule a delivery appointment.
- An adult (18+) must be present to inspect and sign for delivery.
- If you are unavailable during the delivery window, the courier may charge storage fees (typically $25–$100/day), or return the shipment to us, which will be treated as a return with restocking fees.
- Requests for delayed delivery or special services (e.g., inside delivery) may incur additional fees charged by the carrier, payable by the customer.
- Refused deliveries without valid reason will be treated as returns, subject to a restocking fee.
📦 Small Items (FedEx, UPS, or Similar)
- Shipped via FedEx Ground or equivalent service.
- Signature is not required; the item will be left at or near your door if deemed safe by the courier.
📬 Tracking Information
- Tracking numbers are provided by email within 1–2 business days after order processing.
- FedEx/UPS shipments may take 2–4 business days to appear in tracking systems.
- LTL Freight shipments may take 3–5 business days after processing to display tracking information.
📦 Shipping Regions
We currently ship to the 48 contiguous United States. We do not ship to:
- PO Boxes
- Alaska or Hawaii
- Puerto Rico, Guam, Northern Mariana Islands, or U.S. Virgin Islands
- Any remote islands outside the continental USA
🔧 Damaged Deliveries
- If your shipment arrives damaged, please refuse delivery and contact us immediately.
- If you accept delivery and later discover damage, email us within 24 hours at sales@freedomhvacsupply.com with your order number and clear photos.
- Damage claims filed after 24 hours may be denied.
- Write "Package Damaged" on the delivery receipt, even if damage is minor.
- Installed items cannot be replaced or repaired under freight damage claims.
- Missing parts? Contact us right away — we’ll ship replacements free of charge.
⏱️ Note: Delivery timelines are estimated and vary by shipping method and destination.
About Freedom HVAC Supply
Welcome to Freedom HVAC Supply – your trusted nationwide source for high-performance, affordable, and reliable HVAC parts, tools, and equipment. We proudly serve homeowners, contractors, and professionals across the United States with industry-leading products from MRCOOL, Daikin, Goodman, and more.
Revolutionizing How HVAC Products Are Bought & Sold
For decades, the HVAC industry followed a strict path: manufacturers sold to distributors, distributors sold to contractors, and the general public was left out. At Freedom HVAC Supply, we’re proud to say — we’re not doing it that way.
We believe everyone deserves access to high-quality HVAC products at fair, transparent prices. Whether you're a licensed HVAC contractor, an experienced installer, or a homeowner tackling your own project, we make it simple to get the equipment you need without the industry gatekeeping.
Who We Are
Freedom HVAC Supply was founded by a team of seasoned HVAC professionals with decades of field experience. We understand the real-world challenges faced by HVAC technicians, DIYers, and contractors — because we’ve lived them. Our mission is simple: to make high-quality HVAC systems, tools, and accessories accessible to everyone, with expert guidance and unbeatable support.
What We Offer
- Nationwide shipping on HVAC parts, tools, and equipment
- Industry-leading brands including MRCOOL, Daikin, Goodman, and Amana
- Authorized dealer pricing and volume discounts
- Live expert support from real HVAC pros
- DIY-friendly guides and contractor-ready solutions
Why Choose Freedom HVAC Supply?
We're not just another HVAC parts supplier — we are partners in your comfort and your craft. Every product we carry has been vetted for performance and reliability. Our team stays on top of HVAC trends, refrigerant regulations, and emerging technologies so you don't have to. Whether you're replacing a mini split, installing a complete ducted system, or just need reliable tools for the job, we're here to help.
- 100% Secure Checkout: All purchases are protected with 256-bit SSL encryption.
- Expert Help: Our techs and sales team offer real guidance — not just upsells.
- Free Shipping: Most systems ship free via FedEx or freight — insured, fast, and secure.
- No Hidden Fees: Transparent pricing and policies you can trust.
Stepping Outside the Box
The old model is fading. Freedom HVAC Supply is leading a new era — where the walls between manufacturer and customer are removed. No middleman, no games. Just fast, honest access to the parts and equipment you need.
We don't just sell boxes — we build solutions. We challenge the status quo by giving power back to the buyer, saving you time and money without sacrificing quality. That’s why contractors love us, and homeowners trust us.
Join the Movement
Whether you're building your business, upgrading your system, or taking on your first DIY HVAC project — we’re here to help you succeed.
Welcome to Freedom HVAC Supply. Let’s make heating and cooling better, together.
Pick Up Where You Left Off
Your short list of parts and systems—ready when you are.