Taco 2400-45S-3P Circulator Pump or Taco 0011-CF-USK On Command 1/8? Which Taco Model to Buy
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The comparison of taco 2400 45s 3p circulator pump vs 0011 cf usk on command 1 8 highlights two distinct Taco solutions. Both units deliver reliable hot water circulation, but they serve different plumbing needs. The primary difference lies in their power and intended application. One is a heavy-duty stainless steel pump for main lines, while the other is a compact, under-sink unit. You must match the spec to your specific hot water demand.
Key differences
| Aspect | Taco 1/3 HP Stainless Steel Circulator Pump | Taco On Command 1/8 HP Under Sink Pump |
|---|---|---|
| Power | 1/3 HP | 1/8 HP |
| Material | Stainless Steel | not listed |
| Use | not listed | Under Sink |
| Installation | not listed | Under sink |
Which one should you choose?
Choose Taco 1/3 HP Stainless Steel Circulator Pump if
- You need higher flow power for a larger system
- You require a durable stainless steel construction
- You are installing a main line circulator pump
Choose Taco On Command 1/8 HP Under Sink Pump if
- You need a compact pump for under-sink use
- You want a dedicated On Command kit for a single fixture
- You require lower power consumption for a small application
Verdict: Choose the 2400-45S-3P if you need a robust, high-power pump for general circulation. Select the 0011-CF-USK if you are installing a dedicated, compact unit under a sink. Each model fits a specific, non-overlapping use case.
Taco Pump Specs Compared
Motor Power
The Taco 2400-45S-3P features a 1/3 HP motor. This higher power output supports robust circulation in larger residential hydronic heating systems. In contrast, the Taco 0011-CF-USK On Command uses a 1/8 HP motor. This lower power rating is sufficient for point-of-use applications, such as delivering hot water to a single sink or fixture. You should choose the 1/3 HP model for whole-house circulation loops. The 1/8 HP unit is better suited for small, localized hot water delivery tasks where energy efficiency and quiet operation are priorities.
Build Material
Construction quality varies between these two Taco units. The 2400-45S-3P circulator pump is built with a stainless steel casing. Stainless steel offers superior corrosion resistance and durability, making it ideal for long-term installation in demanding heating environments. The 0011-CF-USK On Command kit does not list its specific casing material in the provided specifications. Without this data, you cannot confirm if the external housing offers similar corrosion protection. For harsh environments, the stainless steel build of the 2400-45S-3P provides a clear advantage in longevity and structural integrity.
Intended Use
These pumps serve different plumbing needs. The Taco 0011-CF-USK is explicitly designed as an under-sink kit. It is intended for point-of-use hot water recirculation, keeping water hot at a specific fixture. The Taco 2400-45S-3P is a standard circulator pump. It is typically used in closed-loop hydronic heating systems or whole-house hot water recirculation loops. If you need hot water at a single sink, the 0011-CF-USK is the correct choice. For heating systems or broader circulation, the 2400-45S-3P is the appropriate tool.
Physical Dimensions
Size matters for installation space. The Taco 2400-45S-3P lists dimensions of 1 inch in width, height, and length, weighing 1 pound. These measurements seem unusually small for a 1/3 HP pump, so you should verify the actual footprint with the manufacturer before planning your installation. The 0011-CF-USK does not provide dimensional data in the available specs. You will need to check the packaging or manual for the under-sink kit's size constraints. Without complete data for both, you cannot determine which unit fits better in tight spaces.
Installation Type
Installation complexity differs between the models. The Taco 0011-CF-USK is sold as an On Command under-sink kit. This suggests it includes necessary components for a straightforward point-of-use setup, likely simplifying installation for a single fixture. The Taco 2400-45S-3P is listed with a default style and no specific kit information. It is a standalone pump component. You will need to source additional parts like valves and fittings for a complete system. The 0011-CF-USK offers a more integrated solution for under-sink applications.
Choose the Right Taco Pump for You
Installer needing robust circulation for heating systems
You need the Taco 2400-45S-3P for larger hydronic setups. Its 1/3 HP motor provides stronger flow than the smaller unit. The stainless steel construction adds durability. This model handles higher demands in residential heating loops where consistent pressure and heat distribution are critical for system efficiency.
Homeowner wanting instant hot water under a sink
The Taco 0011-CF-USK is designed specifically for under-sink use. Its 1/8 HP motor is sufficient for point-of-use applications. This compact unit delivers hot water quickly to a single faucet. It is the practical choice when you only need to eliminate wait times at one specific sink location.
User prioritizing material durability and build quality
If material longevity matters, choose the Taco 2400-45S-3P. It features a stainless steel body, which resists corrosion better than standard materials. This build quality supports long-term reliability in demanding environments. The 1/3 HP power ensures it remains effective even as system conditions change over time.
The products compared
Taco 1/3 HP Stainless Steel Circulator Pump
Best for: Durable tankless water heater circulation
- Power
- 1/3 HP
- Material
- Stainless steel
- Dimensions
- 1 × 1 × 1 inches
- Weight
- 1 pounds
View on Amazon: Taco 1/3 HP Stainless Steel Circulator Pump Affiliate link
The Taco 2400-45S-3P is a 1/3 HP circulator pump built with a stainless steel casing. This model offers more power than the 1/8 HP Taco 0011-CF-USK found elsewhere in this guide. The stainless steel construction provides durability for your plumbing system. You should consider this pump if you need a reliable, heavy-duty unit for your tankless water heater setup.
Pros
- 1/3 HP motor for strong water circulation
- Stainless steel housing for corrosion resistance
- Durable build quality suitable for long-term use
Cons
- Higher power consumption than 1/8 HP models
- Larger physical footprint than compact under-sink pumps
- No variable speed settings listed in specifications
Good fit if
- You need a durable pump for a standard tankless heater
- You prefer stainless steel construction over cast iron
- You want a reliable fixed-speed circulator
Skip if
- You require a compact pump for tight under-sink spaces
- You need energy-efficient 1/8 HP performance
- You want variable speed control options
Verdict: Taco 2400-45S-3P Stainless Steel Pump is a robust choice for homeowners who prioritize durability and steady performance over compact size or variable speed features.
Taco On Command 1/8 HP Under Sink Pump
Best for: Single sink instant hot water
- Power
- 1/8 HP
- Installation
- Under sink
View on Amazon: Taco On Command 1/8 HP Under Sink Pump Affiliate link
This Taco 0011-CF-USK is a dedicated 1/8 HP circulator pump designed for under-sink installations. It delivers instant hot water to a single fixture, such as a bathroom vanity or kitchen sink. The compact design fits into tight spaces beneath counters. You get targeted hot water delivery without heating the entire home system. It is a practical solution for reducing wait times at one specific point of use.
Pros
- 1/8 HP motor power
- Designed for under-sink installation
- Provides instant hot water to a single fixture
- Compact form factor fits tight spaces
Cons
- Limited to 1/8 HP power output
- Serves only one specific sink location
- Not suitable for whole-house heating
Good fit if
- You need instant hot water at a single sink
- You have limited space under the sink
- You want to avoid heating water for unused fixtures
Skip if
- You need hot water for multiple fixtures simultaneously
- You require high flow rate for a shower
- You are heating a whole-house system
Verdict: Taco 0011 On Command 1/8 HP Under Sink is a specialized pump for single-sink hot water delivery. It suits you if you want instant hot water at one vanity without running pipes through the whole house.
Specifications side by side
| Spec | Taco 1/3 HP Stainless Steel Circulator Pump | Taco On Command 1/8 HP Under Sink Pump |
|---|---|---|
| Power | 1/3 HP | 1/8 HP |
| Material | Stainless steel | not stated |
| Installation | not stated | Under sink |
| Use | not stated | Under Sink |
| Dimensions | 1 × 1 × 1 inches | not stated |
| Weight | 1 pounds | not stated |
| Size | not_applicable | not stated |
| Color | Stainless Steel | not stated |
| Model | 2400-45S-3P | 0011-CF-USK |
Frequently asked questions
Can the Taco 0011-CF-USK pump handle a whole-house hot water recirculation system?
No. This model is designed for single-sink applications. Its 1/8 HP motor provides only enough power to move water to one vanity. You need a more robust unit for whole-house circulation. The Taco 2400-45S-3P offers higher power and is built for larger hydronic systems. Using the smaller pump for a full house will result in poor performance.
Is the Taco 2400-45S-3P pump made of stainless steel?
Yes. The product specifications list stainless steel as the primary material. This construction choice supports durability and steady performance over time. It is a robust choice for homeowners who prioritize longevity. The stainless steel body helps resist corrosion in demanding plumbing environments. This feature makes it suitable for continuous use in tankless water heater setups.
What is the motor horsepower difference between these two Taco models?
The Taco 2400-45S-3P uses a 1/3 HP motor. The Taco 0011-CF-USK uses a 1/8 HP motor. The larger motor in the 2400-45S-3P provides stronger flow for bigger systems. The smaller 1/8 HP motor is sufficient for low-demand, single-sink applications. You should match the motor power to your specific water volume needs.
Where should I install the Taco On Command 1/8 HP pump?
You should install it under the sink. This model is specifically designed for under-sink use. It delivers instant hot water to a single vanity point. It is not intended for central heating loops or whole-house distribution. Place it close to the faucet it serves to minimize wait time for hot water.
Does the Taco 2400-45S-3P pump weigh more than the 0011 model?
Yes. The 2400-45S-3P weighs 1 pound. While the exact weight of the 0011 model is not listed, its smaller 1/8 HP motor and specialized under-sink design suggest it is lighter. The heavier stainless steel construction of the 2400-45S-3P contributes to its weight. This added mass supports its role in more demanding circulation tasks.
Can I use the Taco 0011-CF-USK for hydronic heating?
No. This pump is intended for single-sink hot water delivery. It is not built for the pressures or flow rates required by hydronic heating systems. Use the Taco 2400-45S-3P for heating applications. Its 1/3 HP motor and stainless steel build are better suited for those specific demands. Using the wrong pump can lead to system failure.