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Coleman / MAAX Spas - Lower control systems

Control System Retrofit Kit — The Universal Fix for Aging Hot Tubs

Don't replace your spa, revive it. The Control System Retrofit Kit is a complete plug-and-play upgrade that replaces worn-out, obsolete spa packs with a modern, reliable control system, no matter what brand of hot tub you own.
Shop and order at Western Tub and Pool.

Why hot tub owners choose the Control System Retrofit Kit

Universal compatibility

Built on trusted platforms like the Balboa BP7/BP8 series, this kit is engineered to replace nearly any existing spa control system, regardless of brand. Whether your topside panel is failing, your heater has died, or your control box just won't power on anymore, this kit brings your spa back to life without a full equipment overhaul.

One kit, dozens of setups

With over 32 configuration options, the kit supports anywhere from one to four pumps, plus blowers, circulation pumps, and advanced features. That means a single retrofit kit can be tailored to fit almost any hot tub setup on the market today.

Built to last

  • M8 technology equipped for smart, reliable performance
  • Available with 1.375/5.5kW or 1.0/4.0kW heater options
  • All circuits convertible to 120V or 240VAC
  • Freeze protection built in to guard against cold-weather damage
  • US and Canada UL Recognized for safety and compliance
  • Complete with 12V light assembly, spaside control, amp receptacles, and a full installation kit

Everything you need in the box

Each kit includes the spa pack, circuit board, heater, topside control panel, and a detailed owner's manual with wiring diagram, so you're not left guessing during installation.

Compatible hot tub brands and models

The Control System Retrofit Kit is designed to replace control systems across a wide range of manufacturers, including:

  • Balboa — VS, GS, EL, ML, and BP series systems
  • Vita Spa — including UNIVITA configurations (MXBP501 pack with ML701 topside)
  • Maax / Coleman Spa — including MXBP501 and MXBP20 pack configurations
  • Elite Spas
  • California Cooperage Spas
  • Nordic Hot Tubs — including BRS3 and BRS4 series
  • Master Spas
  • Caldera Spas
  • Dimension One
  • Dreammaker Spa
  • Gecko-equipped spas
  • Jacuzzi
  • Marquis Spa
  • Waterway-equipped spas
  • Watkins (Hot Spring, Tiger River, Solana, Limelight, Hot Spot)
  • Sundance Spas
  • Artesian Spa
  • Cal Spa
  • Dynasty Spa
    Not sure if your model is covered? Send us your hot tub's make, model, and serial number and we'll confirm the right fit.

Cross-reference part numbers

Some of the part numbers this kit replaces or corresponds to include:

Cross-Reference Number

Description

VITA-KIT-1 (UNIVITA)

Vita Spa universal retrofit kit

110236

BP501T6 Powerworks (Vita, Elite, California Cooperage, Coleman)

110237

MXBP501 pack with TP600 topside

110239

MXBP501 pack with TP800 topside

110339

MXBP20 pack with TP800 topside

109320

Coleman Powerworks Spa Pack

BRS3 / BRS4

Nordic Hot Tubs control pack and topside panel

50-BP7-200-55-K

Balboa BP7 with TP200 topside, 5.5kW heater

Have a different part number? Check it against our online catalogue or give us a call, chances are we carry the match or a direct equivalent.

 

Dimensions and weight

Kit weight comes in at approximately 14 lbs, making it manageable for most DIY installations without special equipment. Exact footprint will vary slightly depending on the specific pack and topside configuration you order, our team can confirm precise measurements for your chosen kit before you buy.

Frequently asked questions

Will this kit work with my hot tub if it's not a Balboa brand?
Yes. The Control System Retrofit Kit is designed to replace nearly any existing spa control system when paired with the correct topside interface, regardless of the original manufacturer.
How many pumps can the kit support?
Depending on the configuration you choose, the kit can support anywhere from one to four pumps, plus blowers and circulation pumps.
Is installation difficult?
No. The kit ships as a complete package with a spa pack, heater, topside control panel, light assembly, and a detailed owner's manual with wiring diagram. Most hot tub owners can complete installation without professional help.
What if I don't know my current control system's part number?
No problem. Send us a picture of your existing spa pack along with the make, model, and serial number of your hot tub, and our team will identify the correct retrofit kit for you.
Does the kit work in cold climates?
Yes. Built-in freeze protection helps guard your system against cold-weather damage.
Is this kit safe and certified?
Yes. It's UL Recognized in both the US and Canada, so you can install with confidence.

Hard-to-find part? We've got you covered.

Can't find the exact part you need in our catalogue? Send us an email at fixmytub@gmail.com and our team will track it down.
As an international e-retailer, Western Tub and Pool sources parts from warehouses across multiple regions. Because of this, the same part may be available from more than one location, and shipping will vary accordingly. To make sourcing easier, we've added regional suffixes to our part numbers:

  • U — USA
  • C — Canada
  • E — Europe
  • A — Asia
    Note that some products may appear as duplicates simply because they originate from different regions.
    If you know your part number, check it against our catalogue. If not, send us photos along with your hot tub's make, model, and serial number, and we'll help you find exactly what you need.
    Shop and order at Western Tub and Pool — call 1-855-248-0777 or email fixmytub@gmail.com today.
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