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Main product image of Tankless Heater for Weil McLain WTGO-3, WTGO-4, WTGO-5, and WTGO-6 Boilers, 590-921-612
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Tankless Heater for Weil McLain WTGO-3, WTGO-4, WTGO-5, and WTGO-6 Boilers, 590-921-612

Brand:
Weil-McLain
SKU:
590-921-612
Rating:
(33)
Q&A:
(2)
Tankless Heater for Weil McLain WTGO-3, WTGO-4, WTGO-5, and WTGO-6 Boilers, 590-921-612
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$411.91 each
In Stock
In Stock
Get 4 Tue, Jul 7
Order by today, receive Tuesday
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days

Description

Includes heater, gasket, nuts and studs. For boiler sizes WTGO-3, 4, 5, & 6.

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Product Reviews

4.94 out of 33 reviews
97% would recommend this product
4.94
out of 33 Reviews
97% would recommend this product
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Most Liked Positive Review

Exactly what I needed for hot water!

Currently trying to buy a house and in order to get financing I had to put heat in it. Picked up a WTGO-6 for around 200$. Ordered this to get hot water operational in the house. Installed easy. Unlimited hot water 14 Gal per min (Someone said 4 in a question, wrong) Shipping was prompt! Save yourself the overhead from letting the heating/plumbing guys order this for you. You can even knock some time of their labor costs by putting it in yourself!
VS

Most Liked Negative Review

I do not know if I would buy this product again

Weil McLain needs to improve their quality control. The first tankless heater was damaged where I could not use it. The replacement was also flawed, but I installed it and it is working good so far. Both products had flaws from Weil McLain, and not from shipping. Supplyhouse sent me a replacement very fast. I would buy from them again.
Showing 1-10 of 33 reviews

I always try to buy original equipment.

I ordered this product to install later this summer. The inlet tubes look bent from shipping. I hope when I install this product it doesn't have a problem.
Ted
Massapequa, NY
1 months ago
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The heater coil resolved my hot water issue!

The new coil resolved my hot water issue. The shower would start really hot and then get cold and then come back hot again. I tested at the faucet and it did the same thing. This comes with a square o-ring gasket, which is what is used with the Weil Mclain models mentioned. It also comes with new studs and nuts.
Steve
Wallingford, CT
4 months ago
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I do not know if I would buy this product again

Weil McLain needs to improve their quality control. The first tankless heater was damaged where I could not use it. The replacement was also flawed, but I installed it and it is working good so far. Both products had flaws from Weil McLain, and not from shipping. Supplyhouse sent me a replacement very fast. I would buy from them again.
Slick
Oxford, CT
1 years ago
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Great Service & return policy

Weil Mclain tankless hot water coil. Received first one not able to use do to shipping damage, called Supply House, they send one right away. Paid shipping both ways, great to do business with, and will in the future.
E.P.
14 Leavitt Rd Belmont, N.H. 03220
2 years ago
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Tankless coil

Your service was the best, and I would buy from you again. The first one you sent was damaged, but you sent out the second one, in record time, and I really appreciate that, and I thank you. E.P.Williams
E.P.
14 Leavitt Rd Belmont, N.H. 03220
2 years ago
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I would buy it again!

This simple installation saved me about $6000. The capacity of the tankless boiler to produce hot water was very low. Some professionals refused to change the coil because it was like opening a can of worms. Others said the solution was to install an indirect water heater, which would cost between $5-7k. I ordered this coil, and it arrived the next day. Installation was straightforward. Now I have plenty of hot water. The part was what I needed. I solved my problem.
Nick
Hamden, CT
2 years ago
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Solved our hot water problem

The coil looked to be a quality product, installation went smoothly and our hot water is consistent again!
Bilbo
Bedford, NH
2 years ago
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Great quality

Perfect fit
Mg
Ri
2 years ago
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This thing got to me and it worked perfectly

It worked perfectly went right on the man that helped me over the phone got me the right one and they got it right to me would use this company again
Patrick couch
New Hampshire
3 years ago
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Great quality coil at a great price!

Had to replace coil on boiler , ordered coil client was only with out hot water for one night. Thanks to the fast shipping.
Plumber860
Connecticut
3 years ago
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Product Q&A

2 Questions
2 Questions
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Q: why does the heater come with new studs. how do they change out

Asked by wireman 14 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

The heater comes with new studs in case the old ones are getting bad. You can get vise grips or pliers to change out the old ones.

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-

Most of the time theses coils are replaced after quite a few years of use and have a buildup on the coil and the studs get corroded . In my case my original coil was only 3 years old and was leaking into the boiler, I didn't replace the studs ,which just unscrew from the boiler. You may need to heat up the area with a torch if they are badly corroded

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Q: how many gallons does it warm up do they make one big for the some unit ty

Asked by 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

The tankless coil will provide 3.25 - 4.00 gallons per minute depending on which boiler the coil is installed in.

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- Tom

14 Gals per min, never ran out of hot water. Not using a mixing valve and was still putting out hot without spurts of hot to cold. The coil itself may only hold like 1/2 gal or a gal(not sure) but with a high of 140 and low 120 boiler temp, never lost hot.

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