🛁 Gecko Aqua-Flo Flo-Master FMHP Spa Pump – 1.5 HP 2-Speed 115V (02115000-1010)

Industry-leading flow rates with dual-speed versatility for powerful jets and efficient filtration

♨️ Product Overview

The Gecko Aqua-Flo Flo-Master FMHP (Model: 02115000-1010) is a 1.5 HP dual-speed jet pump engineered by Gecko Alliance, a global leader in spa and hot tub equipment. Designed with a unique, high-performance impeller that delivers flow rates exceeding all tested competition, this pump is the ideal choice for entry-level and mid-range spas requiring exceptional jet power and efficient water circulation.

Operating on 115V/60Hz with a compact 48-frame design, this pump offers powerful hydrotherapy on high speed and energy-efficient filtration on low speed. The side discharge configuration with 1-1/2″ MBT connections and included union fittings provides flexible installation options, while the compact unitized single spring elastomer bellows mechanical seal ensures maximum durability and leak-free performance. With reinforced engineered plastic construction and stainless steel volute fasteners, the FMHP series is built to deliver reliable, long-lasting service in demanding hot tub environments.

Gecko Alliance has over 25 years of experience in spa equipment design and manufacturing, and the Flo-Master FMHP series represents their commitment to delivering powerful performance with outstanding energy efficiency.

⭐ Key Features

• ✅ 1.5 HP Dual-Speed Motor – Powerful jet performance on high speed, efficient filtration on low speed
• ✅ Industry-Leading Flow Rates – Up to 150 GPM from the unique high-performance impeller design
• ✅ 48-Frame Thru-Bolt Construction – Compact design fits standard spa equipment compartments
• ✅ 115V / 60Hz Operation – Standard US electrical supply for plug-and-play compatibility
• ✅ Side Discharge Configuration – Flexible plumbing layout options for various spa designs
• ✅ 1-1/2″ MBT Connections – Both suction and discharge feature Male Buttress Thread fittings
• ✅ Unions Included – Quick-release compression fittings for easy installation and maintenance
• ✅ Elastomer Bellows Mechanical Seal – Compact, unitized, single spring design for maximum durability
• ✅ Built-In Thermal Overload Protection – Automatically protects the motor from overheating
• ✅ Reinforced Engineered Plastic Volute – Corrosion-resistant construction with stainless steel fasteners
• ✅ No Cord (Hardwire Ready) – Designed for direct wiring to spa control system

⚙️ Technical Specifications

⚠️ Note: Amperage ratings are sourced from the primary Parts4Tubs listing and verified against Gecko Alliance’s authorized distributor (SpaParts.com). Some secondary sources may list slightly different amperage values due to motor revisions. Always verify the nameplate on your specific pump.

⚡ Electrical Requirements

.🔗 Compatibility Guide

This Pump:

• 📍 Frame: 48Y (48 Frame Thru-Bolt)
• 📍 Wet End: 1-1/2″ FMHP series
• 📍 Discharge: 1-1/2″ MBT (Side)
• 📍 Suction: 1-1/2″ FPT/MBT (Center)
• 📍 Connection OD: 2-7/16″ (union collar size: approximately 2.5″ / 64mm tip to tip)

Compatible Applications:

This pump is ideal for entry-level and mid-range portable spas, whirlpools, and hot tubs requiring a 1.5 HP 2-speed pump with 1-1/2″ plumbing. The 48-frame thru-bolt design is compatible with standard 48-frame mounting configurations.

Replacement For:

This pump cross-references to a wide range of Gecko Aqua-Flo FMHP models including (verified from manufacturer cross-reference lists):

02015000-1010, 02015000-2010, 02015000-3010, 02015002-1310, 02015022-1000, 02015036-1080, 02015098-1010, 02015101-1080, 02015106-2000, 02015207-1000, 02015207-2010, 02015236-1010, 02015236-2010, 02015236-2300, 02015500-2010, 02015616-2000, 02015859-2000, 02015859-2010, 02115000-1000, 02115000-1300, 02115000-1310, 02115000-2010, 02115000-5010, 02115000-5310, 02115001-2310, 02115006-2010, 02115006-2110, 02115007-2110, 02115008-2110, 02115010-2000, 02115087-1030, 02115117-1000, 02115208-1000, 02115208-1100, 02115208-1300, 02115209-1000, 02115233-1110, 02115233-1310, 02115302-2010, 02115319-2110, 02115319-2310, 02115408-2000, 02115408-2010, 02115408-2100, 02115408-2300, 02115409-2000, 02115471-2000, 02115500-2000, 02115500-2010, 02115510-2010, 02115519-2010, 02115519-2110, 02115519-2310, 02115520-1010, 02115597-1010, 02115597-1310, 02115851-1010, 02115866-1010, 02115926-1010, 03010118-2080, 03010119-2080, 03010119-2100, 03010119-2300, 03015000-2010, 03015106-1080, 03015114-1080, 03015284-2110, 03015284-2310, 03015293-1110, 03015293-1310, 03015616-1080, 03015837-1110, 03015837-1310, 03115000-1000, 03115000-1010, 03115001-2310, 03115002-1310, 03115003-2010, 03115003-2310, 03115209-1300, 03115452-2000, 03115452-2300, 03115452-5300, 03115484-2010, 03115484-2110, 03115484-2310, 03115500-2000, 03115500-2010, 03115509-2300, 03115519-2110, 03115519-2310, 03115597-1110, 03115597-1310, 03115885-1300, 03215000-5340

Additional Cross-Reference Part Numbers:

1-00-0024, 34-402-2024, 344022024, AF021150001010, 15-350-2292

⚠️ Always verify your existing pump’s model number, frame size, horsepower, voltage, and plumbing connections before ordering a replacement.

🛠️ Installation Requirements

Mounting:

Plumbing:

Installation Notes:

• ⚠️ This pump is designed for below water level (flooded suction) applications. The volute must be completely filled with water before operation.
• ⚠️ Never run pump dry — causes seal damage and motor overheating.
• ⚠️ Quick-release compression fittings are included. Hand tighten only — do not use a wrench.
• ⚠️ Ensure proper grounding and bonding per NEC requirements (No. 8 AWG minimum).
• ⚠️ GFCI protection is required by code for all spa and hot tub installations.
• ⚠️ No cord is included — this pump requires hardwire installation to your spa control system.
• ⚠️ For NPT threaded connections, use Quick-Seal Teflon Thread Sealing Compound or sealants formulated specifically for plastics.

🔧 Maintenance Guide

Routine Maintenance:

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without starting)
• Water leaking from the seal area
• Motor trips breaker repeatedly
• Reduced water flow despite clean filter
• Motor overheating and cycling on/off
• Motor shaft does not rotate freely

Seal Replacement:

• 📍 Seal Part Number: 92500150 (Seal #200)
• 📍 Seal Type: Single spring elastomer bellows mechanical seal (carbon and ceramic ring assembly)
• ⚠️ Replace the complete seal assembly (both ceramic and carbon sides) every time the pump is disassembled
• ⚠️ Use alcohol wipes or isopropyl alcohol with clean lint-free cloth to clean seal surfaces
• ⚠️ Apply water to impeller sleeve and rubber boot ribbing for lubrication during reassembly

Winterization:

Disconnect all electrical power. Drain thoroughly through the drain plugs at the 6 and 9 o’clock positions. Clean out any debris. Protect pump and motor from the elements by covering or storing in a dry, well-ventilated room.

🎯 Ideal Applications

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This is a 1.5 HP dual-speed spa pump. Some sources may reference this as 1.5 OHP (Operational Horsepower) / 2.0 THP (Total Horsepower), which are two different measurement standards for the same motor.

Q: Will this fit my hot tub? A: This pump has a 48Y frame with 1-1/2″ MBT connections on both suction (center) and discharge (side). Check your existing pump’s frame size, plumbing size, and connection type for compatibility. The union collar measures approximately 2.5″ (64mm) tip to tip for the 1-1/2″ FBT union size.

Q: What voltage does this pump require? A: 115V / 60Hz. This is a standard US household voltage. All electrical installation must be performed by a licensed electrician. A GFCI-protected dedicated circuit is required.

Q: Does this pump run on 115V or 230V? A: This specific model (02115000-1010) is 115V only. If you need a 230V version, the corresponding model is 02115005-1010. Using the wrong voltage will damage the motor.

Q: Is this a single or dual speed pump? A: This is a 2-speed pump. High speed (14.4A) powers the jets for hydrotherapy. Low speed (5.5A) runs filtration and heating cycles efficiently.

Q: What size are the ports? A: Both suction (center) and discharge (side) ports are 1-1/2″ MBT. The physical outer diameter of the connections is 2-7/16″.

Q: Does this pump come with a cord? A: No. This pump is designed for hardwire installation to your spa control system. A pump cord (AMP plug) must be purchased separately if required by your spa pack. A compatible 2-speed AMP cord is available from Parts4Tubs (Part# 21087).

Q: Can I rotate the discharge direction? A: Yes. The wet end (volute) can be rotated by loosening the four thru-bolts at the back of the motor. This allows you to position the side discharge in the orientation that best suits your plumbing layout.

Q: What warranty is included? A: This pump includes a manufacturer’s warranty from Gecko Alliance. Contact Parts4Tubs for full warranty terms and coverage details.

Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding or screeching), leaking seals, reduced flow, the motor tripping the circuit breaker, or the motor overheating and cycling on/off.

Q: Do I need a GFCI breaker? A: Yes, GFCI (Ground Fault Circuit Interrupter) protection is required by the National Electrical Code (NEC) for all hot tub and spa installations in the United States.

Q: What seal does this pump use? A: The FMHP series uses Seal #200 (Part Number: 92500150). It is a compact, unitized, single spring elastomer bellows mechanical seal with both a carbon ring and ceramic ring assembly.

📥 Downloads & Resources

📄 Gecko Aqua-Flo Flo-Master HP/CP Techbook (PDF) – Official installation manual, assembly/disassembly instructions, troubleshooting guide, and replacement parts list

🏆 Why Choose the Gecko Aqua-Flo FMHP 1.5 HP

• ✅ Industry-leading flow rates – Up to 150 GPM from the unique high-performance impeller
• ✅ Dual-speed versatility – Powerful jets on high speed, efficient filtration on low speed
• ✅ Proven reliability – Gecko Alliance’s 25+ years of spa pump engineering expertise
• ✅ Easy installation – Quick-release compression fittings included; rotatable wet end for flexible plumbing
• ✅ Built-in protection – Thermal overload protection safeguards the motor
• ✅ Durable construction – Reinforced plastic volute, stainless steel fasteners, elastomer bellows seal
• ✅ Massive cross-reference list – Direct replacement for 80+ Aqua-Flo FMHP model numbers
• ✅ Lower operating costs – Superior flow rates at lower HP means less energy consumption

🤝 Why Buy from Parts4Tubs

• ✅ US-based support for American customers (Boca Raton, FL)
• ✅ Fast shipping across the United States
• ✅ Expert advice from spa and hot tub specialists
• ✅ Competitive pricing in USD
• ✅ Full warranty support
• ✅ Hassle-free returns
• ✅ Replacement seals, impellers, wet ends, and parts available
• ✅ Dedicated customer service team — real people, not just the internet
• ✅ Compatible AMP cords and pump unions available separately

✨ Summary

The Gecko Aqua-Flo Flo-Master FMHP (02115000-1010) is a 1.5 HP, dual-speed, 115V jet pump featuring industry-leading flow rates up to 150 GPM from its unique high-performance impeller design. Built on a compact 48Y frame with side discharge, center suction, 1-1/2″ MBT connections, and included union fittings, this pump delivers powerful hydrotherapy on high speed and energy-efficient filtration on low speed. With a durable elastomer bellows mechanical seal, built-in thermal overload protection, and reinforced plastic construction, the FMHP is engineered for years of reliable service. A direct replacement for over 80 Aqua-Flo model numbers. Order yours today from Parts4Tubs.

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	Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBT Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring	$6.36 Max: 586 Min: 1 Step: 1 Add to cart
	Magic Plastics Union 0602-20 (2″ Pump Union) | 2″S x 2″FBT w/ O-Ring Union, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring	$8.00 Max: 503 Min: 1 Step: 1 Add to cart
	Waterway Union 400-6010 | 2-1/2″ Union Nut with 2-1/2″ Slip tailpiece and o-ring (2.5″ union) Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S	$14.77 Max: 149 Min: 1 Step: 1 Add to cart
	1 Speed Pump / Blower / AMP Cord | 21086 Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White	$24.71 Max: 335 Min: 1 Step: 1 Add to cart
	Balboa Amp Plug 21087 (For 2 Speed Pumps) Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White	$31.72 Max: 167 Min: 1 Step: 1 Add to cart

Hot Tub Pump Collar & Union Size Chart

Imperial & Metric Specifications

Union Size	Collar Size	Thread OD	Union OD	O-Ring Size
1.5" Female Buttress Thread (FBT)	2.5" / 64mm (Tip to Tip) Measurement	2-1/2" 64mm	2-13/16" 71mm	2-5/16" OD 59mm
2" Female Buttress Thread (FBT)	3.1" / 78mm (Tip to Tip) Measurement	3-1/16" 78mm	3-3/8" 81mm	2-15/16" OD 75mm
2.5" Female Buttress Thread (FBT)	3.6" / 91mm (Tip to Tip) Measurement	3-5/8" 91mm	4-1/4" 108mm	3-7/16" OD 87mm

Important Notes

The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement.

Collar size is measured from thread tip to thread tip on the pump outlet.

Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications.

O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy.

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.