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Kit-S Thermostat, 63°C AquaPLUS Residential, 633-500-020

SKU:
633-500-020
Rating:
(22)
Q&A:
(0)
Kit-S Thermostat, 63°C AquaPLUS Residential, 633-500-020
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$109.80 each
In Stock
In Stock
Get 7 Tomorrow, Jun 16
Order by 6PM, receive Tomorrow
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days

Product Highlights

Product Highlight: Used With
35 Model, 45 Model, 55 Model, 85 Model

Description

Weil-McLain 633-500-020 Kit-S Thermostat Repair Kit (63°C) - AquaPLUS Residential
A Weil-McLain thermostat repair kit for AquaPLUS residential indirect water heaters, used to restore temperature control when the existing thermostat has failed.

Key Features:
  • Thermostat repair kit identified as Kit-S Thermostat repair kit, 63°C AquaPLUS Residential
  • Part number/SKU: 633-500-020
  • Manufacturer parts catalog description: Thermostat Repair Kit includes thermostat and instructions

Compatibility & Applications:
  • Listed for use with AquaPLUS water heater models: 35, 45, 55, 85
  • Must only be used where the manufacturer specifies this exact part number: 633-500-020

Installation & Operation Notes:
  • Installation/service should be performed by a qualified heating installer/service technician, following the water heater's product manual and all information shipped with the unit
  • Manufacturer manual safety guidance for servicing includes:
  • Disconnect electrical supply before performing maintenance (to avoid electric shock)
  • Allow the water heater to cool before performing maintenance (to avoid severe burns)
  • Follow the unit's manual for the correct replacement procedure and to verify the correct part for the specific model

Maintenance & Troubleshooting:
  • This kit is used when thermostat-related issues prevent normal hot water operation (review-reported examples include sudden loss of hot water and thermostat failure)
  • If issues continue after replacement, the manufacturer documentation should be used to confirm correct installation and verify any related controls or wiring (the kit is only one part of the overall control system)

User Reviews & Q&A Summary:
  • Reviews are mixed: many describe it as an exact-fit replacement that restored hot water quickly, while others report repeated thermostat failures over time and frustration with having to replace the part periodically .

Specs

Used With:

35 Model

45 Model

55 Model

85 Model

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Product Reviews

3.73 out of 22 reviews
70% would recommend this product
3.73
out of 22 Reviews
70% would recommend this product
WRITE A REVIEW
5 star
64%
4 star
0%
3 star
9%
2 star
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1 star
27%
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Most Liked Positive Review

SupplyHouse A+, Product TBD

The order was received overnight and the ordering process was flawless. So SupplyHouse gets an A+. The part, however, not sure yet. It's working as intended, but it's been only weeks since installation. Based on age of the original that was replaced and reviews from others, this Weil-McLain part review would have to wait. Hoping that it lasts and I dont have to replace it again in a few months as has been the case with other reviewers.
VS

Most Liked Negative Review

Will HAVE to buy this item again and again

Weil Mcclain indirect hot water heater works well keeping up with demand as long as the tank doesn't implode within a couple of years or the thermostat fail every 6 months. Our original tank sprung a horrible leak within "warranty" so a replacement was free. Installation was not. A grand out of pocket. Should have converted to tank-less at that point. Thermostats are also junk, we are on number 3 for the replacement tank all within 2 years. At around $50 each they're not cheap but anyone can replace it, I've gotten it down to 5 minutes if the screw driver is handy. Imploding tank was covered under warranty only because Weil Mcclain knew there was a manufacturing defect and my understanding is a class action suit resulted in these extended warranty cases. Apparently the thermostats are defective as well since the heater is now on its 4th one in 2 years. I'm was going to recommend this as a replacement part because if you need one there is no alternative but I can't.
Showing 1-10 of 22 reviews

As Always QUALITY PRODUCTS

Supply House never disappoints. Quality Products, Great Prices and SUPER FAST SHIPPING.
DW
MA
3 months ago
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Exactly as advertised. Easy installation

Product is exactly as advertised. Directions were clear, installation was easy.
Scott
Ct
8 months ago
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weil mclain indirect water heater thermostat.

This is the third one I have put in this water heater. They last a year or two and then they die! Not Supply House fault. It is an OEM product. Fast delivery, good web site and no problems.
Al B
Lindenhurst, N.Y.
2 years ago
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Exactly perfect replacement part

This was a piece of cake to install (I'm a homeowner/DIY-er, not a pro).Instructions were detailed enough, yet easy to understand. Packaging ensured a product that was undamaged on arrival. Delivery time was great. Overall, a perfect experience
Sam
Worcester, MA
2 years ago
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Yes

The product worked great.
Tony
New York
3 years ago
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A number one

On the money have not been disappointed fast service thanks
Mike
New York
4 years ago
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Quick response

Fast service for a needed part.
Zeke
Philadelphia
4 years ago
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Perfect Fit, Perfect Fix

Original thermostat on AquaPLLUS 45 gal. tank failed (during my Wife's shower!) and SupplyHouse.com had this perfect replacement part. Awesome service by SupplyHouse.com put this exact replacement part in my hands the next day. Issue resolved!
The Accidental Plumber
Boston, MA
4 years ago
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Do not buy Weil-McLain Products.

I am so unhappy with my product. The thermostat breakers every 2 years and always in the middle of winter. Nobody local every carries the replacement parts and you will sit in your cold house with no hot water waiting a week while someone ships you the part.
Matt
Albuquerque, NM
4 years ago
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Direct fit!

T/p valve was going off on an indirect water heater, this was the culprit.
Wellguy
Ct
5 years ago
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