Mr.Steam Low Water Cutoff & Feeder (MM 150), CU Series
About This Part
The Mr.Steam Mechanical Low Water Cutoff and Feeder (MM 150) is required for appropriate water fill in the tank vessel on CU Commercial Steam Shower Generators CU2000 - CU4500.
NOTE: To preserve the originality, operation and safety of replacement parts, this product is not returnable.
- Ships from the USA
- Secure checkout
- Lowest price guaranteed
Product Photos
About This Part
The Mr.Steam Low Water Cutoff & Feeder (MM 150), CU Series is a genuine Mr.Steam replacement part, part #033-99114. It is an authentic Mr.Steam component stocked and shipped by Sauna Company USA, so you can repair your spa or hot tub with the correct OEM part rather than a generic substitute. Order part #033-99114 online with fast U.S. shipping, secure checkout, and support from our parts team, who can help confirm it is right for your equipment before you buy.
Browse more: All Mr.Steam parts
Technical Specifications
| Part Number | 033-99114 |
| Brand | Mr.Steam |
| Item Type | Part |
| Shipping Method | Freight |
| Availability | In Stock |
Contact us to confirm compatibility with your specific model before ordering.
Installation Overview
General accessory installation — follow all manufacturer instructions included in the package.
- Verify compatibility with your specific model using the part number before installing.
- If electrical work is involved, engage a licensed electrician — do not bypass safety interlocks.
- Use only manufacturer-approved tools and hardware. Substitutions may void the warranty.
- Test the system at low settings first after any installation or replacement.
- Register the part with the manufacturer to activate the warranty.
Compatibility & System Requirements
This part is designed for use with:
- Mr.Steam CU-Series Steam Generators
Not sure if this fits your system? Contact us with your model number and we'll confirm before you order.
Frequently Asked Questions
Is this a genuine OEM part?
Yes. Sauna Company USA is an authorized dealer for Mr.Steam. All parts sold are genuine OEM components sourced directly from the manufacturer or authorized distributor, not aftermarket substitutes.
How do I confirm this fits my model?
Match the part number (SKU) on the product against the parts list in your equipment's owner manual, or locate the data plate on your unit and compare the model number to the compatibility table above. If unsure, contact us with your model number before ordering.
Can I return this part if it doesn't fit?
Parts & accessories are non-returnable once opened — incorrect parts cannot be resold as new. Please confirm compatibility before purchasing. We're happy to help identify the correct part for your system.
How long will shipping take?
This item ships via freight carrier. Estimated delivery is 5–8 business days after the order ships. You'll receive a tracking number and the carrier will contact you to schedule a delivery window.
Shipping & Delivery
Freight shipment — this item ships by LTL freight carrier due to its size or weight.
- Estimated delivery: 5–8 business days after order ships.
- The carrier will contact you to schedule a delivery window.
- Delivery is curbside (to the curb or driveway) — plan for help moving the item.
- Inspect the shipment for damage before signing. Note any damage on the delivery receipt.
- Contact us within 48 hours if freight damage is discovered.
Canada: We ship this part to Canada too — shipping is calculated at checkout. Duties and taxes may apply at the border.
Questions about your order? Email info@saunacompanyusa.com or use our contact page.
Warranty & Returns Policy
Mr.Steam Manufacturer Warranty: Limited 2-Year Warranty (US & Canada)
Returns: Parts & accessories are non-returnable once ordered. This policy exists because installed or opened components cannot be resold as new. Please verify compatibility thoroughly before purchasing — we're here to help.
Defective items: If your part arrives damaged or defective, contact us within 48 hours of delivery. We will arrange a replacement at no charge with proof of the defect (photos or video).
For warranty claims, visit our Warranty Claims page.