Taco Bronze Circulator Pump Analog vs Taco 006-ST4 Hot Water Circulator: Spec Comparison
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You are comparing the taco bronze circulator pump analog vs 006 st4 hot water circulator. Both units serve as hot water recirculation pumps designed for residential systems. They share the Taco 006 series heritage, which implies compact sizing and efficient operation. The main difference lies in their construction materials and control mechanisms. One features a bronze body with an integrated analog timer. The other uses a stainless steel housing with a direct electrical connection. Your choice depends on your plumbing connection needs and scheduling preferences.
Key differences
| Aspect | Taco Bronze Circulator Pump with Analog Timer | Taco 006-ST4 Hot Water Circulator |
|---|---|---|
| Housing Material | Bronze | Stainless steel |
| Control Type | Analog timer | Direct electrical (no timer) |
| Connection Size | 1/2 in. sweat | 3/4 in. NPT |
| Power | not listed | 1/40 HP |
| Flow Rate | not listed | 11 gpm @ 1 ft |
| Max Temperature | not listed | 220°F |
Which one should you choose?
Choose Taco Bronze Circulator Pump with Analog Timer if
- You need a 1/2 inch sweat connection for your existing pipes.
- You want an integrated analog timer to automate pump cycles.
- You prefer a bronze construction for your circulator pump.
Choose Taco 006-ST4 Hot Water Circulator if
- You require a 3/4 inch NPT connection for your system.
- You need a stainless steel housing for durability.
- You want a pump with a specified 11 gpm flow rate at low head.
Verdict: Choose the Taco 006-BC4 if you need a 1/2-inch sweat connection and built-in timing control. Select the Taco 006-ST4 if you require a 3/4-inch NPT connection and have specific flow rate needs. Both are reliable choices within their respective connection standards.
Taco 006-BC4 vs 006-ST4 Specs
Flow capacity
The Taco 006-ST4 offers a maximum flow rate of 11 gallons per minute at a low head of 1 foot. It also delivers 6 gallons per minute at 6 feet of head. The Taco 006-BC4 does not list specific flow rates in its published data. You cannot verify its exact volumetric performance from the available specs. The ST4 provides clear numbers for system sizing. This makes the ST4 the better choice if you need to match a specific gallon-per-minute requirement for your hot water loop. The BC4 leaves this critical detail undefined in the provided information.
Housing material
The Taco 006-BC4 features a bronze housing. Bronze is a traditional material for circulator pumps and offers good durability. The Taco 006-ST4 uses a stainless steel housing. Stainless steel often provides superior resistance to corrosion compared to bronze, especially in varied water conditions. Both materials are robust for residential use. However, the ST4 material may offer longer life in corrosive environments. The BC4 remains a solid, standard option. The difference comes down to material preference. Stainless steel generally edges out bronze for modern corrosion resistance.
Connection size
The Taco 006-BC4 uses 1/2-inch sweat connections. This size is common for smaller residential branch lines. The Taco 006-ST4 uses 3/4-inch NPT connections. NPT threads require tape or dope for sealing, unlike sweat fittings. The 3/4-inch size allows for larger water volume passage than the 1/2-inch size. Your existing piping determines which unit fits. If you have 3/4-inch pipes, the ST4 is the direct match. If you have 1/2-inch pipes, the BC4 fits better. The ST4 connection is larger, which may benefit larger systems.
Control type
The Taco 006-BC4 includes an analog timer. This allows you to set specific on and off periods for the pump. This feature helps save energy by running the pump only when needed. The Taco 006-ST4 does not list a timer or control type in its specifications. It appears to be a direct-run pump. You would need to add an external timer or switch to control its operation. If you want built-in scheduling, the BC4 is the only option. The ST4 requires additional components for timed operation. The BC4 offers more integrated control features.
Power and voltage
The Taco 006-ST4 is rated at 1/40 HP and runs on 115 volts. It draws 0.52 amps. This low power consumption is efficient for continuous or frequent cycling. The Taco 006-BC4 does not list its horsepower or amp draw in the provided data. We cannot compare their energy usage directly. However, the ST4 specs confirm its electrical requirements. You must ensure your circuit can handle 115 volts. The BC4 likely uses similar standard voltage, but the lack of data makes it uncertain. The ST4 provides clear electrical specs for planning your wiring.
Dimensions and weight
The Taco 006-BC4 measures 5.25 inches in width, 6 inches in height, and 3.5 inches in length. It weighs 4.5 pounds. The Taco 006-ST4 measures 6.5 inches in width, 5.7 inches in height, and 7.2 inches in length. The ST4 is longer and wider but slightly shorter in height. The BC4 is more compact in overall footprint. The ST4 is heavier due to its stainless steel construction and larger size. Space constraints in your mechanical room will dictate the fit. The BC4 is easier to fit in tight spaces. The ST4 requires more clearance for installation.
Choose Your Taco Circulator Pump
Users wanting scheduled operation
The Taco 006-BC4 includes an analog timer. This lets you set specific run times for your hot water system. You save energy by avoiding continuous circulation. The bronze body and sweat connections fit standard residential plumbing. This model suits homes where water usage follows a predictable daily pattern.
Users needing higher flow
The Taco 006-ST4 delivers 11 gallons per minute at one foot of head. This higher flow capacity serves larger homes or multiple bathrooms better. Its stainless steel housing offers durability. The 3/4-inch NPT connections fit larger pipe sizes. Choose this pump if you need robust performance for high-demand hot water recirculation.
Users wanting easy service
The 006-BC4 features a replaceable cartridge with all moving parts. You can service the internal components without replacing the entire unit. This design simplifies maintenance over the pump's lifespan. The compact size fits tight spaces. Bronze construction provides reliable performance for standard residential hot water recirculation systems.
The products compared
Taco Bronze Circulator Pump with Analog Timer
Best for: 1/2-inch sweat systems needing analog control
- Connection Size
- 1/2 in. sweat
- Material
- Bronze
- Control Type
- Analog timer
- Voltage
- 120V
- Dimensions
- 3.5 × 5.25 × 6 inches
- Weight
- 4.5 pounds
View on Amazon: Taco Bronze Circulator Pump with Analog Timer Affiliate link
The Taco 006-BC4 is a bronze circulator pump designed for hot water systems. It features a 1/2-inch sweat connection and an analog timer for scheduling. This unit offers standard high capacity output and quiet, efficient operation. Its compact design and self-lubricating parts make it suitable for high-efficiency jobs. You get a replaceable cartridge for easy servicing without replacing the entire unit. It includes a line cord for power.
Pros
- Bronze construction for durability
- 1/2-inch sweat connection size
- Analog timer for scheduling control
- Replaceable cartridge for easy maintenance
- Self-lubricating operation
Cons
- Analog timer lacks digital precision
- 1/2-inch connection limits flow for larger systems
- Includes line cord which may restrict placement
Good fit if
- You need a 1/2-inch sweat connection
- You prefer analog timer control
- You want easy cartridge replacement
Skip if
- You require digital timer controls
- You need a larger connection size
- You want wireless smart features
Verdict: Taco 006-BC4 Bronze Analog Timer Pump fits users who need a durable bronze pump with a 1/2-inch sweat connection and simple analog scheduling. It is ideal for systems where easy cartridge replacement is a priority.
Taco 006-ST4 Hot Water Circulator
Best for: small residential hot water recirculation loops
- Compatibility
- Hot water circulator
- Flow Rate
- 11 gpm @ 1 ft
- Max Head
- 9.5 ft
- Power
- 1/40 HP
- Voltage
- 115 V
- Connection Size
- 3/4 in. NPT
View on Amazon: Taco 006-ST4 Hot Water Circulator Affiliate link
The Taco 006-ST4 is a 1/40 HP hot water circulator pump designed for in-line installation. It features a stainless steel housing and ceramic shaft, running on 115 V power. The unit delivers up to 11 GPM at 1 ft of head and handles temperatures up to 220°F. With 3/4-inch NPT connections, it suits small residential loops. This model offers a wet rotor design for maintenance-free operation.
Pros
- 1/40 HP motor provides reliable circulation
- Stainless steel housing resists corrosion
- Handles max temperature of 220°F
- Wet rotor design requires no maintenance
Cons
- Single speed limits flow adjustment
- 3/4-inch connection size is small for large homes
- No included flange or union for easy installation
Good fit if
- You need a compact pump for a small hot water loop
- You prefer a maintenance-free wet rotor design
- You have 115 V power available near the installation site
Skip if
- You require variable speed control for precise flow management
- You need larger 1-inch or greater pipe connections
- You want a pump with included mounting hardware
Verdict: Taco 006-ST4 Bronze Circulator Pump is a solid choice for small residential systems needing reliable, low-maintenance circulation. It fits well in tight spaces but lacks the flexibility for larger or more complex plumbing setups.
Specifications side by side
| Spec | Taco Bronze Circulator Pump with Analog Timer | Taco 006-ST4 Hot Water Circulator |
|---|---|---|
| Compatibility | not stated | Hot water circulator |
| Flow Rate | not stated | 11 gpm @ 1 ft |
| Max Head | not stated | 9.5 ft |
| Power | not stated | 1/40 HP |
| Voltage | not stated | 115 V |
| Connection Size | 1/2 in. sweat | 3/4 in. NPT |
| Material | Bronze | Stainless steel |
| Control Type | Analog timer | not stated |
| Installation | not stated | In line |
| Max Temperature | not stated | 220°F |
| Dimensions | 3.5 × 5.25 × 6 inches | 7.2 × 6.5 × 5.7 inches |
| Weight | 4.5 pounds | not stated |
| Size | 1 | not stated |
| Color | Bronze | Stainless Steel |
| Model | 006-BC4 | 006-ST4-1 |
Frequently asked questions
Which Taco pump is better for a small residential hot water loop?
The Taco 006-ST4 is designed specifically for small residential recirculation loops. It offers reliable performance in tight spaces. Its stainless steel construction provides durability for standard home systems. This model is ideal if you need a straightforward, low-maintenance circulator for a single-family dwelling without complex scheduling needs.
Does the Taco 006-BC4 have a timer?
Yes, the Taco 006-BC4 includes an analog timer. This feature allows you to schedule specific run times for your hot water system. You can control when the pump operates to save energy. This is useful for homes where continuous circulation is not required or desired.
What are the physical dimensions of the Taco 006-BC4?
The Taco 006-BC4 measures 5.25 inches in width, 6 inches in height, and 3.5 inches in length. It weighs 4.5 pounds. These compact dimensions make it suitable for standard installation spaces. The bronze body adds to its sturdy build for residential plumbing setups.
What material is the Taco 006-ST4 made of?
The Taco 006-ST4 features a stainless steel construction. This material choice supports its role as a durable hot water circulator. The stainless steel body helps resist corrosion in recirculation systems. It is built to handle the demands of small residential hot water loops effectively.
Can the Taco 006-ST4 handle high flow rates?
The Taco 006-ST4 delivers a maximum flow rate of 11 gallons per minute at a low head of 1 foot. It also provides 6 gallons per minute at 6 feet of head. These specs make it capable of supporting standard residential recirculation needs efficiently.
Is the Taco 006-BC4 suitable for sweat connections?
Yes, the Taco 006-BC4 is designed for 1/2-inch sweat systems. This connection type is common in residential plumbing. It allows for easy installation using standard soldering techniques. The bronze body complements traditional plumbing materials for a secure fit.