Laing LHB08100085 Low Flow Circulating or Laing LHB08100093 AutoCirc Recirculation Pump? Which Laing Model to Buy
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The laing lhb08100085 low flow circulating vs lhb08100093 autocirc comparison focuses on two distinct Laing pump models. Both units handle hot water recirculation in residential plumbing systems. The primary difference lies in their control systems and installation requirements. The LHB08100085 is a basic low-flow pump requiring external timing. The LHB08100093 integrates a timer and thermostat, eliminating the need for a dedicated return line. You must decide based on your plumbing layout and control preferences.
Key differences
| Aspect | Laing Low Flow 33W Brass Pump | Laing AutoCirc Recirculation Pump |
|---|---|---|
| Control Type | No built-in timer | Timer and adjustable thermostat |
| Return Line Requirement | Not listed | Does not require a return line |
| Power Consumption | 33 W | Not listed |
| Housing Material | Brass | Not listed |
| Included Cord | With cord | 6 feet power cord |
Which one should you choose?
Choose Laing Low Flow 33W Brass Pump if
- You already have a separate timer or control system installed
- You prefer a simple brass inline pump with known low wattage
- You need a pump rated for high line pressures up to 150 PSI
Choose Laing AutoCirc Recirculation Pump if
- You want an all-in-one solution with built-in timer and thermostat
- Your plumbing setup lacks a dedicated return line
- You prefer a black unit with integrated controls for easier management
Verdict: Choose the LHB08100085 if you need a straightforward, low-power brass pump and already have timing controls. Select the LHB08100093 if you need a complete recirculation solution that works without a return line. The latter offers more automation for standard residential installations.
AutoCirc vs Low Flow Pump Specs
Control system
The Laing LHB08100093 AutoCirc includes a built-in timer and an adjustable thermostat. This allows you to set specific operating windows and temperature triggers. The Laing LHB08100085 Low Flow pump has no timer included. You must provide your own external timer to control its operation. The AutoCirc integrates these controls directly into the unit. This simplifies setup for users who want automatic management without extra hardware. The Low Flow model relies entirely on external devices for scheduling.
Installation requirements
The Laing LHB08100093 AutoCirc is designed to function without a dedicated return line. It uses a check valve at the furthest fixture to create a recirculation path. The Laing LHB08100085 Low Flow pump is a standard inline unit. It typically requires a traditional plumbing setup with a return line to work effectively. If your home lacks a return line, the AutoCirc offers a more straightforward installation. The Low Flow model may require additional plumbing modifications to function correctly.
Power consumption
The Laing LHB08100085 Low Flow pump requires only 33 watts of power. This low wattage makes it energy efficient during operation. The product data for the Laing LHB08100093 AutoCirc does not list its specific wattage. Without this number, we cannot directly compare their energy usage. However, the Low Flow pump is explicitly marketed for its low power draw. The AutoCirc likely consumes more power due to its integrated controls and sensors, but exact figures are not provided in the specifications.
Build material
The Laing LHB08100085 Low Flow pump features a brass inline housing. Brass is durable and resistant to corrosion in hot water systems. The Laing LHB08100093 AutoCirc is described as black in color. The product data does not specify the material used for its housing. It may contain plastic components due to the complex internal controls. The Low Flow pump offers a clear advantage in terms of known material durability. You can rely on the brass construction for long-term contact with hot water.
Temperature rating
The Laing LHB08100085 Low Flow pump is rated for temperatures up to 230 degrees Fahrenheit. This high limit ensures safety for various hot water systems. The product data for the Laing LHB08100093 AutoCirc does not list a maximum temperature rating. Without this specification, the thermal limits of the AutoCirc remain unknown. The Low Flow pump provides a clear advantage if your system operates at high temperatures. You can verify that the Low Flow unit will not fail under extreme heat conditions.
Which Laing Pump Fits Your Home
You want automatic hot water on demand
The LHB08100093 AutoCirc includes a built-in timer and adjustable thermostat. You can set specific operating windows and temperature triggers without external devices. This control system manages recirculation automatically, ensuring hot water is ready when you need it. It simplifies operation by handling scheduling and temperature checks internally.
You have an existing return line setup
The LHB08100085 Low Flow pump is a basic unit requiring no special return line configuration. It features a dry run cutout for protection and handles line pressures up to 150 PSI. You must supply your own timer, but this offers flexibility. The brass inline housing fits standard 1/2-inch threaded connections for straightforward integration.
You prioritize energy efficiency and low power
This model requires only 33 watts of power. Its low flow design minimizes energy consumption during recirculation cycles. The brass construction supports temperatures up to 230°F, ensuring durability under high heat. You get a compact unit that fits easily into tight spaces while maintaining consistent performance for your hot water system.
The products compared
Laing Low Flow 33W Brass Pump
Best for: Low-power hot water recirculation
- Power
- 33 W
- Connection Size
- 1/2 in. threaded
- Material
- Brass
- Max Temperature
- 230°F
- Dimensions
- 2.75 × 2.5 × 4.2 inches
View on Amazon: Laing Low Flow 33W Brass Pump Affiliate link
This Laing unit is a brass inline recirculation pump designed for hot water systems. It features 1/2-inch threaded connections and a compact footprint of 2.75 by 2.5 by 4.2 inches. The motor draws only 33 watts and handles line pressures up to 150 PSI. It includes a dry run cutout for safety. You should choose this model if you need a reliable, low-power circulation solution for standard residential plumbing.
Pros
- Low 33-watt power consumption
- Brass inline housing with 1/2-inch threaded fittings
- Dry run cutout protection
- Rated for temperatures up to 230°F
Cons
- Timer is not included in the package
- Requires manual installation of the control unit
- Limited to 1/2-inch connection size
Good fit if
- You want a low-energy recirculation pump
- You have standard 1/2-inch threaded plumbing
- You need a compact inline pump
Skip if
- You need an all-in-one unit with a built-in timer
- Your plumbing requires larger than 1/2-inch connections
- You prefer a pump with a digital display
Verdict: Laing Low Flow Circulating Pump is a solid choice for homeowners who prioritize energy efficiency and durability in a recirculation system. It fits best in homes with standard 1/2-inch piping where you are willing to add a separate timer.
Laing AutoCirc Recirculation Pump
Best for: homes without return lines
- Control Type
- Timer and adjustable thermostat
- Weight
- 5 pounds
View on Amazon: Laing AutoCirc Recirculation Pump Affiliate link
The Laing LHB08100093 AutoCirc pump delivers hot water without a dedicated return line. It uses a timer and adjustable thermostat to control circulation. The unit weighs 5 pounds and includes a 6-foot power cord. It serves all fixtures on the hot water line with one installation. This model saves water by reducing waste during circulation cycles.
Pros
- No return line required
- Adjustable thermostat control
- Includes 6-foot power cord
- Single pump for all fixtures
Cons
- No smart home integration
- No remote control included
- Manual timer settings only
Good fit if
- You want hot water without retrofitting pipes
- You prefer manual thermostat adjustments
- You need a single pump for multiple fixtures
Skip if
- You require app-based remote control
- You need a return line installation
- You prefer fully automated scheduling without manual input
Verdict: Laing AutoCirc Pump with Thermostat is a practical choice for homeowners who need hot water on demand without installing a return line. It suits those who value manual control over smart features.
Specifications side by side
| Spec | Laing Low Flow 33W Brass Pump | Laing AutoCirc Recirculation Pump |
|---|---|---|
| Power | 33 W | not stated |
| Connection Size | 1/2 in. threaded | not stated |
| Material | Brass | not stated |
| Control Type | not stated | Timer and adjustable thermostat |
| Max Temperature | 230°F | not stated |
| Features | not stated | Timer, Thermostat |
| Dimensions | 2.75 × 2.5 × 4.2 inches | not stated |
| Weight | not stated | 5 pounds |
| Color | Brass | Black |
| Model | LHB08100085 | LHB08100093 |
Frequently asked questions
Can I use the Laing LHB08100085 without a separate timer?
No. The Laing LHB08100085 Low Flow pump does not include a built-in timer. You must provide your own external timer to control when the pump operates. This setup requires additional planning for installation. The pump itself is a simple brass unit designed for continuous or scheduled flow based on your external controls.
Does the AutoCirc pump require a dedicated return line?
No. The Laing LHB08100093 AutoCirc is designed for homes without a dedicated return line. It uses a built-in thermostat and timer to manage hot water delivery. This allows you to get hot water on demand without installing new plumbing. It is a practical choice if you want to avoid major renovation work.
What is the size difference between the two Laing pumps?
The Laing LHB08100085 has specific physical dimensions: 2.5 inches wide, 4.2 inches high, and 2.75 inches long. The data for the LHB08100093 lists its weight as 5 pounds but does not provide width, height, or length. You should check the manual for the exact footprint of the AutoCirc model if space is tight.
Which pump is better for energy efficiency?
The Laing LHB08100085 is described as a low-flow circulating pump with 33W power consumption. This suggests it uses less electricity during operation. The LHB08100093 AutoCirc includes a thermostat to prevent unnecessary heating, which also saves energy. Both models aim to reduce waste, but the LHB08100085 is specifically marketed for low-power recirculation.
Can I control the AutoCirc pump manually?
Yes. The Laing LHB08100093 AutoCirc includes a timer and an adjustable thermostat. You can set specific operating windows and temperature triggers. This gives you manual control over when the pump runs and when it stops. You do not need smart home features to manage the system effectively.
What material is the Laing LHB08100085 made of?
The Laing LHB08100085 Low Flow pump is made of brass. This material is known for durability in plumbing applications. The color is listed as brass. The LHB08100093 AutoCirc is described as black, but its material composition is not specified in the provided data.
Is the AutoCirc pump suitable for standard 1/2-inch piping?
The data states the LHB08100085 fits best in homes with standard 1/2-inch piping. It does not explicitly state the piping compatibility for the LHB08100093 AutoCirc. However, both are residential recirculation pumps. You should verify the inlet and outlet sizes for the AutoCirc in the installation guide to ensure it matches your existing plumbing.