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Balboa GS501z Hot Tub Heater - GS501 Spa Pack - PN# 54511-01 - EURO


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Item Description

Balboa GS501z - European Version


3.0 Kw Kw Digital Spa Pack
With Patented M7 technology - This is the world's
best spa pack! - Made in America - CE Certified!


Time to upgrade your old spa pack hot tub heater?

Balboa GS 501z, uses simply the best spa pack technology in the market. Completely digital circuitry means less failures, more accurate heating range, and much simpler to use. Accurate to +/- 1 degree.

The Balboa Spas Pack works at 240 VAC VAC producing 3.0 KW. It fits any standard 2" or 1 1/2" plumbing making it ideal to upgrade almost any older mechanical spa pack.

Replaces any Spa Pack from other manufactures! Don't be fooled, Balboa Spa Packs can replace any hot tub heater on the market including Gecko, Hot Springs, Len Gordon, Hydro Quip, LA Sas, Cal Spas, Coleman Spas, Beachcomber Spas, Artic Spas to name a few......

Built in programmable features such a cycle programming, sleep mode, economy mode and self diagnosis are just some of its features. Weather freeze ups are eliminated with the built in freeze protection system. It also has the ability to select how much current will be drawn allowing use of a 30 Amp breaker or 40 Amp, yet still deliver the full features.

It has receptacles for the following:

One 2-speed pump + one 1-speed pump or blower (not both)+ one circulation pump + one ozonator + one constant-on for Audio/Visual devices + one 12 volt light. All receptacles (except light) can be switched to supply 120 Volts or 230 Volts.

Comes complete with:

  • GS501Z pack including Stainless Steel portable heater with 2" heater tail pieces
  • Plasticized control instruction sheet; complete instruction manual for retrofit situations produced by Northern Lights.

The Patented M7 Technology removes the need for pressure sensors and remote heat sensors common on other older spa packs. This unique technology allows the spa pack to be positioned in any location or direction (before, after the pump or before or after the filter).

The GS501z is the most current model line from Balboa.



  • 10.56" High x 19.5" Long x 4.60" Deep
  • Comes with 12 V light that will support LED lighting
  • CE certification
  • Optional infrared water proof remote control is available ($125 extra)
  • 240 VAC ozone support
  • 240VAC @ 50Hz
  • Pump 1= 12amp max; Pump 2= 12amp max; Blower= 8 amp max; Pump 1= 15 amp; Pump 2/Blower = 15 amp; Circulation Pump = 5 amp; Ozonator = 1 amp; A/V = 5 amp; Light = 12 v @ 1 amp
    2 years manufacturer warranty
  • NOTE you can only use a 2nd single-speed pump or blower not both! If small circulating pump is being used the flow through heater must deliver 23 USGPM or more.
  • MADE IN AMERICA not China

Works with any of these Top Side Controllers

Balboa VL400, Balboa VL401, Balboa VL402, Baloba VL403, Balboa VL404, Balboa VL406, Balbo VL406T, Balboa VL406U


If you are looking for the best most reliable tub replacement system on the market, then Balboa VS501z with M7 technology it is. Their unsurpassed reliability is why Balboa is the world leader in Spa Pack manufacturing both in quality and reliabilit



Balboa Spa Pack Features

Features Balbao GS501Z Balboa VS520SZ Balbao EL2000
5.5 Kw Heater 220 VAC X X X
Separate Optional Aux 5.5 Kw Heater X X X
240 VAC or 120 VAC X X 240 VAC
120/240 Volt output receptacle X X X
Separate voltage for ozone & blower common common X
2 -Speed Pump 1 X X X
1-Speed Pump 2   see note X
2-Speed Pump 2   X X
1-Speed Blower or Pump 3 X X X
Circulation Pump X X X
Ozone X X X
Audio Visual Equip X X X
12 Volt Light X X X
Light switchable to 12 volt or 120 VAC     X
Fiber Optic Wheel Light     X
Real Time Clock     X
Standard, Economy, Sleep Mode X X X
12 hour filter cycle X X X
24 hour filter cycle     X
Filter cycle program by time of day     X
Filter cycle increments     Fully Adjustable
Clean up cycle (filter & ozone on after use)     X
Ozone temp deactivation only when jets are on only when jets are on X
Freeze Protection X X X
Diagnostic messaging X X X
IR Dolphin Remote Control Option (short range) X X X
RF Station Wireless Remote Control (long range)     X
Wireless PC Remote Control via USB     X
Standard Topside      
Optional Topside      
Cables provided      
1-speed 3 conductor Cables      
2-speed 4 conductor Cables      
12 Volt light wiring Kits      
4-pin AMP connector      
Tech Support 1 800 by NLCT X X X
2year Warranty X X X


Our on-staff engineer means you get much more than just a quality product when you buy from us. Our engineer will help you before your purchase as well as during installation and will always be there for ongoing support afterwards, FREE OF CHARGE! Call us or email us and you will quickly see our difference!


Payment Details

We accept PayPal and Credit card (Visa or Mastercard).  If you are ordering multiple units and part, please call us to see if we can save you shipping cost for multiple item orders.


 No taxes to US residence!


Shiping and Handling

Please allow 4-6 days for shipping via UPS Ground to USA or Canada.  You will be emailed a tracking number to the email address you provide us.  Expedited Shipping services are available!

Your #1 Hot Tub Parts Replacement Store!


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  • Model: C-573
  • Shipping Weight: 12lbs
  • 3 Units in Stock
  • Manufactured by: Balboa