WEIL-MCLAIN Ultra Boilers

Weil-McLain Ultra Boiler Overview

The Weil-McLain Ultra is an Energy Star rated condensing gas boiler with an AFUE between 92 and 93.3% for regular conditions, and 98% for conditions related to low temperatures. It is a two-stage induced draft boiler that has what Weil-Mclain call “integrated PhD (Precision Hydronic Data) Technology”, a system that “initiates efficient and ongoing hydronic heating”. The design of the Weil McLain Ultra gas boiler is CSA certified.

Weil-McLain has recalled Ultra Series 80,105,155 and 230 boilers manufactured after June 1, 2012 and prior to March 11, 2014. A cap on the boiler manifold can crack and release gas into the home, presenting a risk of fire or explosion. Consumers may contact Weil-McLain at 888-770-7139 for more information.

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Consumer Reviews of Weil-McLain Ultra


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #5 of 10 Weil-McLain Boiler
  • 25.81% of customers recommended

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Weil-McLain Ultra Boiler Reviews

Showing 21-25 of 31 reviews

"Funds R low"

1.0 rating
Very Unsatisfied

5 years of misery and no heat. Don't care attitude of Mr. Beckett and Weil McLain!! Could write a book. The combo of Weil McLain/beckett or Reillo direct vent does not work for more than six weeks. Total consumer rip off! Many hours of no heat or hot water. After 4.5 years of aggravation and frustration I had a masonry chimney installed. So far system is okay but inefficient and noisy. Something no one has considered, their is red dye in home heating oil. With a direct vent oil system, aside from not performing, the red dye will coat the siding of your home or building. It will not come off! If you happen to see a stainless steel chimney "rusting," It's not rust. It's dye from the oil! Weil McLain and Beckett are more than dishonest in my opinion. Look elsewhere!

R. Overton

Hampton Bays, N.Y.

"Noisy pump bearing"

4.0 rating
Somewhat Satisfied

Installer had to fix bad factory wiring. Went well after that. After 1 year the red pump bearings sounded like they had sand. Weil-McLain didn't honor but supplier did. 1 yr later is noisy again. Will have to live with it. Gained efficiency, lost the quiet. Would have second thoughts on another purchase of Weil-McLain equipment.




5.0 rating
Very Satisfied

I am writing this as a installer/homeowner. I have been in the hvac trade for 23 years. When I started in this trade, the only boiler my boss used was the WEIL-MCLAIN models. I have installed models, ultra, gv, cgs, cgi, cga, heii, wgo, cgx, he, and several other models. The underlying issues with any of these boilers, or any manufactures boilers for that matter, is if they are not properly installed and set up right, they can not – I repeat- they can not run trouble free. Especially the Mod Con Boilers, they need to be installed and serviced by technicians that know what they are doing. I myself have several N.A.T.E. certificates. I would highly suggest homeowners to do their homework before purchasing expensive systems. The benefits of having a highly qualified installer do your installation will pay off bigtime. People need to understand the importance of regularly scheduled maintenance on their hvac equipment. I am not saying that wm boilers have been trouble free, what I am saying is that a lot of problems stem from the installation. People!!!- If it isn't installed right, how can you expect it to run right! My experience has been when I have had issues with wm boilers, I got great response through my distributor and made it right with my homeowners. When buying expensive equipment-take care of it! These comments are coming from an installers standpoint. No other brand is without problems, my advise to mr./mrs. homeowner is do your research on your product and definitely do your research on your installing contractor. I sleep well at night knowing that I have WEIL-McLAIN ULTRA 80 boilers in my own house as well as in all of my rentals.



"Possibly the best boiler I have ever purchased. Reliable, efficient, money saver!"

4.0 rating
Somewhat Satisfied

I have owned my Ultra Series gas boiler for about a year now. What I really like about the boiler is that it is efficient. Well-McLain includes Venturi mixing bodies in this piece of equipment which allows for gas and air to be combined more thoroughly. In times like these, efficiency is important. Another key factor that I like about this boiler is its reliability. No matter what the conditions, this boiler has always been reliable in times of need. What I dislike about the boiler is that the aluminum body dents easily. Thankfully, the dents are easy enough to pop out. If this boiler ever goes bad, which I doubt it will since it has not let me down so far, I would definitely buy the same brand again. If a friend was searching for a boiler, I would highly recommend Well-McLain boilers. They make quality boilers that are becoming more and more efficient.

Los Angeles, CA


1.0 rating
Very Unsatisfied

Bad news. In 5 years, the blower has been replaced, the heat exchanger had to be replaced, and this is the third control board. Good clean power, good clean grounds but the board still goes out every 6 months or so. Putting another new one in Monday but the tech is not sure why they keep going out. The engineer has been out here and yet they cannot figure out why. My advise go with a different brand.

John Smith


Other Ultra Reviews

Comments about Weil-McLain gas boilers on HVAC-Talk message boards and heating contractor sites are generally positive:

  • In one hvac-talk.com forum, one service tech says that the circulator problem on one Weil McLain furnace is due to a bad motor. Heat is strong in every location except one. This heater is strong and persistent, but the circulator requires attention.
  • In another hvac-talk.com forum, another tech observes that the Weil McLain boiler works very well, especially through 3-way valves, and produces considerable heat. A couple of other forum guests agreed with this assessment.
  • In yet another hvac-talk.com forum, both techs and guests agree that Weil McLain provides good multiple relay distribution, providing that the circulator and thermostats are up to par.

Ultra Warranty

Weil McLain Ultra boilers come with a 5-year parts and labor warranty. The unit must be registered within 30 days of installation to qualify for the warranty.

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