🔄 HA350 Circulation Pump – Balboa

Compact, low noise circulation pump engineered for reliable spa water flow

💧 Product Overview

The HA350 Circulation Pump is engineered for whirlpool baths, spas, and hot tubs, offering a compact design, low noise, and reliable performance. Manufactured by Balboa, this dedicated circulation pump provides continuous water flow for filtration, heating, and water treatment systems.

Operating at 230V/50Hz with a power output of 0.56 kW, this single-speed circulation pump delivers consistent performance whilst maintaining low energy consumption. The compact dimensions make it ideal for installation in tight equipment bays, and the low noise operation ensures a peaceful spa environment.

With 1.5-inch union connections and a plain cable supplied for electrical connection, the HA350 offers straightforward installation for spa professionals and experienced DIY installers.

⭐ Key Features

✅ Dedicated Circulation Pump – Purpose-built for continuous spa water circulation

✅ Compact Design – 361mm × 132mm × 171mm for installation in tight spaces

✅ Low Noise Operation – Quiet running for a peaceful spa environment

✅ Balboa Quality – Trusted brand reliability for spa applications

✅ Low Energy Consumption – 0.56 kW / 3.1A for economical continuous operation

✅ 1.5-Inch Unions – Standard plumbing connections for easy installation

✅ Cable Supplied – Plain cable attached for electrical connection

✅ Single Speed – Simple, reliable operation for circulation duties

🔩 Technical Specifications

Specification	Value
Pump Type	Circulation Pump
Brand	Balboa
Motor Power	0.75 HP / 0.56 kW
Speed Settings	Single Speed
Voltage	230 V
Frequency	50 Hz
Amperage	3.1 A
Motor Speed	2850 RPM
Plumbing Size	1.5 inch
Dimensions (L × W × H)	361 × 132 × 171 mm
Electrical Connection	Plain cable supplied

⚡ Electrical Requirements

Electrical Specification	Requirement
Supply Voltage	230 V
Frequency	50 Hz
Full Load Amps	3.1 A
Power Consumption	0.56 kW
Cable	Plain cable supplied

⚠️ IMPORTANT ELECTRICAL SAFETY:

All electrical work must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Hot tubs require RCD protection (30mA). Ensure proper earthing and bonding of all electrical components.

🔗 Compatibility Guide

This Pump Specifications:

📍 Brand: Balboa 📍 Type: Circulation Pump 📍 Plumbing Size: 1.5 inch unions 📍 Speed: Single speed 📍 Cable: Plain cable supplied

Ideal For:

• Whirlpool baths
• Spas
• Hot tubs

⚙️ Installation Requirements

Physical Dimensions:

Dimension	Measurement
Length	361 mm
Width	132 mm
Height	171 mm

Plumbing Connections:

Connection	Size
Unions	1.5 inch

Installation Notes:

⚠️ Pump must be installed below water level (flooded suction) to ensure proper priming

⚠️ Never run the pump dry – this causes seal damage

⚠️ Ensure proper electrical bonding to earth

⚠️ Allow adequate ventilation around the motor

💡 The compact dimensions make this pump suitable for tight equipment bay installations

🛠️ Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal plate and union connections
Inspect unions	Monthly	Tighten if necessary, check O-rings
Clean strainer/filter	As needed	Remove debris to maintain flow
Check amperage draw	Annually	Should match 3.1A rating
Inspect motor vents	Quarterly	Keep clear of debris
Check mounting bolts	Quarterly	Tighten if vibration has loosened

Warning Signs – Consider Replacement If:

• Unusual noise (grinding, screeching, or humming)
• Water leaking from the seal plate area
• Motor trips the circuit breaker repeatedly
• Noticeably reduced water flow
• Motor overheating or hot to touch
• Visible corrosion or damage to motor housing

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot Tub Circulation	Yes	Designed for continuous circulation
♨️ Spa Filtration	Yes	Provides constant flow through filters
♨️ Heating Circulation	Yes	Maintains water flow through heaters
🛁 Whirlpool Bath	Yes	Suitable for whirlpool applications
♨️ Water Treatment Systems	Yes	Ensures chemical distribution

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This is a 0.75 HP (0.56 kW) single-speed circulation pump.

Q: What is a circulation pump used for? A: A circulation pump provides continuous water flow for filtration, heating, and water treatment. Unlike jet pumps which power massage jets, circulation pumps run continuously or for extended periods to keep the water clean and at the correct temperature.

Q: What voltage does this pump require? A: 230V / 50Hz. All electrical installation must be carried out by a qualified electrician in accordance with BS 7671.

Q: Does the pump come with a cable? A: Yes, this pump is supplied with a plain cable attached for electrical connection.

Q: What are the dimensions of this pump? A: The pump measures 361mm (length) × 132mm (width) × 171mm (height).

Q: What size are the plumbing connections? A: The pump uses 1.5-inch union connections.

Q: Is this pump quiet? A: Yes, the HA350 is designed for low noise operation, making it suitable for circulation duties where quiet running is important.

Q: What amperage does this pump draw? A: The pump draws 3.1A at full load.

Q: How do I know if my circulation pump needs replacing? A: Common signs include unusual noises, water leaking from the seal, reduced water flow, or the motor tripping the circuit breaker.

Documentation

• Info and specs
• Manual

🏆 Why Choose the HA350 Circulation Pump

✅ Balboa Quality – Trusted brand with proven reliability in spa applications

✅ Compact Size – Space-efficient design fits tight equipment bays

✅ Low Noise – Quiet operation for peaceful spa enjoyment

✅ Energy Efficient – Low 3.1A draw for economical continuous running

✅ Cable Included – Plain cable supplied for easier installation

✅ Reliable Performance – Engineered specifically for spa circulation duties

🤝 Why Buy From Parts4Tubs

✅ UK-based company with expert local support

✅ Fast UK delivery options available

✅ Knowledgeable advice from spa industry specialists

✅ Competitive pricing on quality Balboa products

✅ Full warranty support

✅ Replacement seals and accessories available

✅ Easy returns within 30 days

✨ Summary

The HA350 Circulation Pump from Balboa is a compact, low noise circulation pump engineered for whirlpool baths, spas, and hot tubs. Delivering 0.75 HP (0.56 kW) at just 3.1A, this single-speed pump provides reliable water circulation for filtration, heating, and water treatment systems. With compact dimensions (361 × 132 × 171mm), 1.5-inch union connections, and a plain cable supplied, the HA350 offers straightforward installation and quiet, efficient operation for continuous circulation duties.

The hot tub industry doesnt make it easy for you when you are trying to match up the size of the unions (the part that screws your pipe work onto the pumps) Below you can see the physical sizes of the collars, and how they relate to the actual union size you need. So a measurement of 2.5", edge to edge on the collar of the pump is actually a 1.5" union - confusing - absolutely! If you are not sure, give me a shout!

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.
2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)
3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.
4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.
5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.
6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.
7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.
8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.
9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.
10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.
11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.
12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.
13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.
14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.
15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.
2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.
3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.
4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.
5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.