Multiple Sclerosis, Heat Sensitivity and Walk-In Tub Bathing
If you or someone you care for lives with multiple sclerosis (MS), a walk-in tub bath plan starts with water temperature, because many people with MS notice that their symptoms are temporarily worse when they are exposed to heat. An Ella walk-in tub gives you several ways to keep a bath comfortably warm rather than hot: you set the fill temperature at the faucet, the thermostatic control valve on tubs that have one can be adjusted down from its 100.4 F factory setting, and the gentler air massage system moves only air. This page explains how those features relate to heat sensitivity. The neurologist or therapist decides what is right for the individual, and nothing here is medical advice.
Heat Sensitivity in MS, in Plain Terms
The National Institute of Neurological Disorders and Stroke describes MS as an autoimmune disorder in which the immune system attacks myelin, the protective cover that coats nerve fibers, and notes that many people with MS find their symptoms are worse when they have a fever or are exposed to heat. A hot bath is one of those exposures, which is why water temperature is the first thing to settle in any bath plan.
Ella's owner manuals already set a firm ceiling for everyone: water above 100.4 F may be harmful to your health, and the manuals ask anyone with a medical condition or taking medication to consult a physician before bathing in warm water. For someone who is heat sensitive, the care team may suggest a target well below that ceiling. Our warm-water bathing guidelines collect the temperature and duration guidance Ella publishes.
Setting a Lower Fill Temperature
There are three places to manage temperature on an Ella walk-in tub, and a heat-sensitive bather can use all three together.
| Control | What it does | How to use it for a cooler bath |
|---|---|---|
| Faucet levers | On the 2-piece fast-fill faucet, one lever swings left for hot and right for cold; on the 5-piece faucet, the red handle is hot and the blue handle is cold. | Start the fill on the cool side and add hot water gradually while checking the temperature, rather than filling hot and waiting for it to cool. |
| Thermostatic control valve (TCV) | Included with Ella thermostatic faucet packages, the TCV blends hot and cold to a set temperature before water leaves the faucet. It arrives set at 100.4 F and is adjustable. | Turn the setting down to the temperature the care team suggests. Turning it above 100.4 F is not recommended. |
| Bath thermometer | An independent reading of the water in the tub, not at the faucet. | Check before the bather sits down and again partway through a longer soak, since a hand test is not reliable for a person with altered sensation. |
Whether your tub has a TCV depends on the faucet configuration that was ordered; the dual-lever 5-piece and the 2-piece fast-fill faucets are not thermostatic. Our thermostatic control valve guide explains which faucets include it and how the setting is adjusted.
What the In-Line Heater Does and Does Not Do
Hydro massage packages include an in-line water heater, and its job is narrower than the name suggests. It switches on and off automatically with the hydro pump and maintains the temperature you filled at; it does not heat cool water, has no thermostat of its own and never runs on its own, so it will not push a cool bath warmer. If you would rather let the bath drift cooler over the course of the soak, run the air massage instead of the hydro massage, because the air system has no heater at all. See what the in-line heater does and will I get cold while the tub fills or drains.
Choosing Gentler Therapies
Ella walk-in tubs can be configured with hydro massage, air massage or both, and the two feel very different.
- Air massage pushes air through many small jets at three speeds. Because it moves only air, it is the gentler of the two systems, and a fourth press of the air button always turns it off.
- Hydro massage recirculates bath water through larger jets for a deeper, targeted massage. Every hydro tub has an intensity control dial on the deck: turning it down reduces the air in the jet stream for a softer flow.
- Shorter soaks are the simplest lever of all. A heat-sensitive bather's care team may prefer far less than Ella's general 20 minute guidance, and there is no need to run any massage system to enjoy the tub.
Our guide to hydro massage versus air massage controls walks through both systems, and choosing therapies answers the questions we hear most often.
Fatigue, Transfers and Having Help Nearby
MS-related fatigue can arrive partway through a bath, so plan the exit before the water goes in. Ella's manuals ask that bathers who do not have full use of all their limbs be attended by a caregiver at all times and use an installed safety belt. The door is never opened until the tub has drained completely, so a person who begins to feel weak should open both drains right away and rest against the backrest while the water leaves. Keep the grab bars within reach, and keep a phone within calling distance but never within 3 feet of the tub, as the manuals require for any electrical appliance.
- ☐ Agree on a target water temperature with the neurologist or therapist
- ☐ Set the TCV, if the tub has one, to that target
- ☐ Fill cool-first and check with a thermometer before sitting
- ☐ Decide in advance: air massage, low hydro intensity, or a still soak
- ☐ Keep a caregiver nearby and a drink of water within reach
- ☐ Open both drains at the first sign of fatigue
The Neurologist or Therapist Decides
Read the official guidance: Multiple Sclerosis, National Institute of Neurological Disorders and Stroke. Ella's Bubbles products and content are not intended to diagnose, treat, cure or prevent any disease.
Related Guides
- The thermostatic control valve explained
- The in-line water heater maintains temperature
- Hydro massage vs air massage controls
- Warm-water bathing guidelines and conditions
- Will I get cold while the tub fills or drains?
- Choosing therapies: common questions
Common Questions
Can the thermostatic control valve be set lower than 100.4 F?
Will the in-line heater make a cool bath warmer over time?
Which massage system is gentler for someone who tires easily?
What should a caregiver do if the bather suddenly feels weak in the tub?
Talk to the care team. The neurologist, physical therapist or occupational therapist who knows the bather decides whether warm-water bathing is appropriate, at what temperature and for how long. This page describes the tub's temperature controls and therapy options so that conversation is easier; it does not prescribe any of them. For help identifying which faucet and controls your tub has, contact your Ella dealer or the team at (800) 480-6850, or open a ticket at ellasbubbles.com/support.
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