Jacuzzi 1994-2002 Models Jacuzzi 2002-Present Models Gatsby Spas



Replace Your Control System - - Electronic

Most hot tubs age in the operations of the spa and not the shell and jets or even pump/motors. All too often homeowners find that simple repair parts for their electronic controls are either very costly or not even available.

Our C5 control from United Controls is the solution. The C5 adapts to almost any setup you have. Customers often report in only took a couple hours for them to replace their control system and now have state of the air electronic controls that will last many years to come. And have a full choice of replair parts.

Our recommendation is if you are happy with your hot tub, consider seriously replacing your old system with our C5. We have extensive knowledge of the Jacuzzi brand spas but can help on almost any brand. If you send us picturers on your current topside and equipment area we will give you an honest evaluation on how hard it will be. Then we recommend what you need. Help you install the new unit with specific instructions. And then we are available even on weekends to answer your questions via text.

Our most popular bottom mounted heater and standard topside is only $478.00 including shipping to lower 48.

What Do You Get with Our Kit?
Most kits have the basic C5 control, T7s Digital Topside, Topside Cord, Pump 1 cord, and necessary accessories.

Option A is our most popular and best priced. You get the C5 control box with new 15" heater.
The T7s is included but you can upgrade to the T8s. The temperature sensor, housing if necessary, topside cord, and Pump 1 cord are included. Other options available at checkout. This designed covers many spas built since 1995.
It can operate on either 115v or 230v. All components can also operate on either voltage.
Option A C5withBottomHeater
Option B is specifically for hot tubs operating with a LOW FLOW circulation pump. The heater attached is designed to operate with a lower than normal water flow. If your spa has a small circulation pump this is likely the unit you need. Contact us and we will make sure.
This option includes the control box and heater attached as shown. It includes the T7s digital topside, topside cord, and both Pump 1 and Circ Pump cord. Other options available at checkout.
It can operate on either 115v or 230v. All components can also operate on either voltage.
Option B C5LowFlowKit
Option C is a specialize designed to make the heater easier to install of spas where the plumbing is rigid. Its the same as Option A with the heater, pressure switch, and OH sensor corded to the heater as shown.
If comes with the C5 and corded heater, T7s topside, temperature sensor and housing, Pump 1 cord, and topside cord. Other options available at checkout.
It can operate on either 115v or 230v. All components can also operate on either voltage.
Option C C5CordedKit

     Just How Easy Is It?
Go To Step by Step Help

Topside Choices

T7s and T8s

T7s Topside T8s Topside
Choose between Style topsides.
See Compare Topsides

  New Control System



Ease of Installation

Uses AMP plug/socket also used by many old systems. If you have AMP plugs likely you can reuse most existing cords

Must install new digital topside

Install new temp sensor included on some models.


1 Year From Date of Purchase

Quality of Components

21st Century Generation


Fully functional digital topside

Component Cords

Pump 1 Cord Included - Others purchased separately

New Electronic Topside


New Heater

Yes Most Systems

Free Install Instructions



See Here

Repair Parts

See Here

Installation Help

See Here


Warning: Although these systems are designed for ease of installation, not everyone is qualified to install.


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