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Aqua-Plus 55 Pewter Indirect Water Heater
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$2,676.31 each
In Stock
Get 3 Tue, Jun 16 - Thu, Jun 18
MANUALS (4)
This item replaces: 633-500-002, 633-800-372
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Lift Gate
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This product weighs 120.032 lbs. and may require the use of a lift gate. If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days
Product Highlights
–
55 Gallons
60" Height
21-7/8" Diameter
12 Year Tank / 2 Year Parts Warranty
210000 BTUs
Stainless Steel
Description
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Weil-McLain 633-600-002 Aqua-Plus 55 Pewter Indirect Water Heater
A 55-gallon Weil-McLain Aqua Plus Series 2 indirect-fired water heater designed to produce domestic hot water using a boiler as the heat source through an internal stainless-steel heat exchanger.
Key Features
Compatibility & Applications
Installation & Operation Notes
Maintenance & Troubleshooting
Certifications & Compliance
User Reviews & Q&A Summary
A 55-gallon Weil-McLain Aqua Plus Series 2 indirect-fired water heater designed to produce domestic hot water using a boiler as the heat source through an internal stainless-steel heat exchanger.
Key Features
- 55-gallon indirect-fired storage water heater (Aqua Plus Series 2)
- 316L stainless steel tank and coil construction for corrosion resistance
- High-output heat exchanger (manufacturer description)
- Advanced digital control / precise digital thermostat (manufacturer description)
- Fully passivated and welded design - no anode rod needed (manufacturer statement)
- 2" thick CFC-free foam insulation to reduce standby heat loss (manufacturer statement)
- Poly resin top and bottom caps and resilient vinyl jacket (manufacturer statements)
- 150 PSI temperature & pressure relief valve included; drain tapping and valve included (manufacturer statements)
- Leveling legs / adjustable feet for uneven floors (manufacturer statements)
- Submittal sheet notes: AHRI Certified and factory pressure tested
Compatibility & Applications
- Intended for indirect domestic hot water production in hydronic/boiler systems using an internal coil heat exchanger.
- Must only be used where the manufacturer specifies this exact model/part number: 633-600-002 (Aqua Plus 55, Series 2).
Installation & Operation Notes
- Installation should be performed by a qualified plumbing/heating professional and must follow the unit's product manual/submittal information and all applicable codes.
- Reference the Aqua Plus Series 2 documentation for required piping, relief valve discharge piping, control wiring, and startup/checkout steps.
- Manufacturer-supplied features to plan around include side connections, a digital control, included T&P relief valve, and an included drain valve/tapping.
- Field feedback notes that replacement of older models may involve changed installation requirements, and many installers add a thermostatic mixing valve for safe, stable delivery temperature.
Maintenance & Troubleshooting
- Manufacturer materials emphasize a welded, passivated stainless design with no anode rod needed, shifting routine maintenance away from anode inspection typical of glass-lined tanks.
- The provided sources do not include detailed troubleshooting procedures; use the unit documentation for control diagnostics and replacement guidance.
- Review themes link service issues primarily to:
- Early leaks/defects on a small number of units (including weld-area leakage), and
- Control/thermostat module issues (one reviewer reported a module that did not close a switch during a call for heat and was replaced under warranty).
Certifications & Compliance
- AHRI Certified is explicitly stated on the Series 2 submittal sheet.
User Reviews & Q&A Summary
- Positive themes: fast recovery, good performance once running, and successful replacement of a failed/rotted-out indirect tank; some DIY/advanced homeowners report substantial savings versus contractor replacement quotes.
- Installation themes: generally described as straightforward for a plumber/experienced installer; several reviewers mention adding or needing a thermostatic mixing valve to manage delivery temperature.
Specs
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| Head Loss-Boiler Side (ft.): | 1.6' |
|---|---|
| Boiler Connection: | 1" NPT |
| BTU Input: | 210000 |
| Material: | Stainless Steel |
| Color: | Pewter |
| Working Pressure (Tank): | 150 psi |
| Capacity (Gallons): | 55 |
| Working Pressure (Coil): | 145 psi |
| Capacity (Domestic): | 53.1 Gallons |
| Warranty: | 12 Year Tank / 2 Year Parts |
| Capacity (Boiler): | 2.2 Gallons |
| DHW Operating Temp: | 160°F |
| Recommended Flow Rate: | 8 GPM |
| Height (Inches): | 60" |
| Diameter (Inches): | 21-7/8" |
| Weight (lbs): | 122 lbs |
| DHW Connection: | 3/4" NPT |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
You May Also Need
11 Replacement Parts
Jacket Replacement Kit, 633-500-134
SKU: 633-500-134
Weil-McLainTop Plastic Cap Replacement Kit, 633-500-024
SKU: 633-500-024
Weil-McLain1" Thermostatic Mixing Valve, 633-500-012
SKU: 633-500-012
Weil-McLain1" Fitting Grommet, 633-500-037
SKU: 633-500-037
Weil-McLainThermowell, 633-500-137
SKU: 633-500-137
Weil-McLain3/4" Temperature/Pressure Relief Valve, 633-500-038
SKU: 633-500-038
Weil-McLainKit-S Thermostat, AcuTemp, 633-600-012
SKU: 633-600-012
Weil-McLain3/4" Fitting Grommet, 633-500-064
SKU: 633-500-064
Weil-McLainSensor Cover, 633-500-131
SKU: 633-500-131
Weil-McLainBottom Plastic Cap Replacement Kit (1 cap, 4 screws)
SKU: 633-500-030
Weil-McLain
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Product Reviews
3.71 out of 14 reviews
77% would recommend this product
5 star
57%
4 star
14%
3 star
0%
2 star
0%
1 star
29%
Most Liked Positive Review
I have hot water again with a new Weil-McClein indirect unit
My old indirect water heater rotted out. Contractors were so busy they said they couldn't get to me for 6 weeks and they quoted me amounts from 5500 to 6000 for a new in-direct water heater.
I really didn't want to work on a boiler/water heater in Dec but 6 weeks was no good. So I went on-line and checked supply house like I have done many times.
I ordered a new Weil-McClain indirect water heater, mixing valve and all kinds of other fittings while I ripped out the old one. Installed the new one without any difficulties just a lot of time down I would rather have spent on something else. When I got to the point of wiring up the thermostat control module, when calling for heat, the thermostat control unit was not closing the switch to enable power to flow to the zone valve motor.
I got help from
Charlie C with Supply House
And
Justin with Weil-McClain
Weil-McClain issued a warranty replacement and supply house shipped it right out. They took care of the issue, got me a new module so I could get everything working.
Now the important issue. This saved me about 4000 dollars, if you figure income tax a person has to earn 6000 to pay that 4000 so I only had to take 2000 out of my IRA. Don't let contractors fool you, boilers are not space shuttles. There are items we must be willing learn to install them safely but if they can learn it so can the rest of us. I will admit that it may be a bit easier for me being an engineer. A water heater and a zone valve, anyone can learn to handle it.
Over the years, supply house has saved me many thousands of dollars. Great company to work with.
VS
Most Liked Negative Review
I would not purchase this product again
I purchased this product on January 6,2021 and it started leaking about 6 months after I installed it. I contacted supplyhouse and they told me that I had to contact the supplier so I contact Weil- McClain and I was told that they would not honor the warranty because I didn't have a licensed plumber install it.It is leaking at the weld on top of the tank so it's nothing I did wrong it's a faulty weld
Showing 1-10 of 14 reviews
A bad experience made better
I purchased Aqua-Plus 55 Pewter Indirect Water Heater from supplyhouse with delivery. Turns out it was a defective one with leakage. It was frustrating as it was around Thanksgiving and we were without hot water. I ended up having to drive to a warehouse to pick up a replacement. Customer service was ok but it was really one of the managers, Christian, who made a difference and hence a 4 star review instead of a 2. I would give supplyhouse another try as support is good. The replacement water heater is working well although it's only been a few weeks. Watch out if you are getting a replacement of an old model as some installation requirements might have changed and front line people wouldn't really know about it as it happened to me.
IM
Massachusetts
4 years ago
Verified Buyer
Was this review helpful to you?
Temperature regulation poor
Overall not happy with unit. The aquasat is located low in the tank causing the unit to call for heat when cold street water is refilling the tank resulting is the top of the tank getting super heated well above set temp. I currently have the tank set to 80F and the water temp output is 130. A thermostatic mixing valve was needed to regulate temp at all fixtures.
Carter
Long Island
4 years ago
Verified Buyer
Was this review helpful to you?
I would not purchase this product again
I purchased this product on January 6,2021 and it started leaking about 6 months after I installed it. I contacted supplyhouse and they told me that I had to contact the supplier so I contact Weil- McClain and I was told that they would not honor the warranty because I didn't have a licensed plumber install it.It is leaking at the weld on top of the tank so it's nothing I did wrong it's a faulty weld
Peanuts
Kempton, pa
5 years ago
Was this review helpful to you?
I would not recommend this product
I purchased this water heater from supplyhouse.com on January 6,2021.Less then 6 months after I got it, it started to leak, I called supply house.com about the problem and I was told that I had to contact the manufacturer who was Weil McLain and the lady there told me that they would not honor the warranty because I didn't have a licensed plumber install it
C
Peanuts
Kempton,pa
5 years ago
Was this review helpful to you?
Great service, excellent pricing
The people at Supply House provide excellent plumbing service. They're the only supply I use for major equipment.
BH
Saint Paul, MN
5 years ago
Verified Buyer
Was this review helpful to you?
Seems well made - using for solar system
The only issue was the threads to one of the heat exchanger inlets were not fully cut or cleaned out. I had to spend a good amount of time scraping shards of metal out of the threads in order to plumb the heat exchanger connections - threads were obviously not Quality Control checked. Looks like it is holding pressure well.
Josh
NH
5 years ago
Verified Buyer
Was this review helpful to you?
I have hot water again with a new Weil-McClein indirect unit
My old indirect water heater rotted out. Contractors were so busy they said they couldn't get to me for 6 weeks and they quoted me amounts from 5500 to 6000 for a new in-direct water heater.
I really didn't want to work on a boiler/water heater in Dec but 6 weeks was no good. So I went on-line and checked supply house like I have done many times.
I ordered a new Weil-McClain indirect water heater, mixing valve and all kinds of other fittings while I ripped out the old one. Installed the new one without any difficulties just a lot of time down I would rather have spent on something else. When I got to the point of wiring up the thermostat control module, when calling for heat, the thermostat control unit was not closing the switch to enable power to flow to the zone valve motor.
I got help from
Charlie C with Supply House
And
Justin with Weil-McClain
Weil-McClain issued a warranty replacement and supply house shipped it right out. They took care of the issue, got me a new module so I could get everything working.
Now the important issue. This saved me about 4000 dollars, if you figure income tax a person has to earn 6000 to pay that 4000 so I only had to take 2000 out of my IRA. Don't let contractors fool you, boilers are not space shuttles. There are items we must be willing learn to install them safely but if they can learn it so can the rest of us. I will admit that it may be a bit easier for me being an engineer. A water heater and a zone valve, anyone can learn to handle it.
Over the years, supply house has saved me many thousands of dollars. Great company to work with.
Smokeu
Park City UT
5 years ago
Verified Buyer
Was this review helpful to you?
So far its great
Plumber installed without an issue
Homeowner
New Hampshire
6 years ago
Verified Buyer
Was this review helpful to you?
i would buy again
i can't believe the recovery rate and was easy to install ,thanks for a great product
Mike
Mt shasta Ca.
6 years ago
Verified Buyer
Was this review helpful to you?
This product and your service all Ace's
The product is excellent as expected. The functionality and performance has been great and will be for years I am sure. Your supply chain was very good and your delivery driver was excellent he represented your company as you would wish yourselves. Overall a great experience.
The Machine
New York
6 years ago
Verified Buyer
Was this review helpful to you?
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