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 1-5 of 31 reviews

"Never again"

1.0 rating
Very Unsatisfied

I have been in the industry for 14 years, this is my first time installing this boiler just want to make a change but this was the worse business decision I have made in my entire time as a plumber and business owner, I will never install this boiler again even if it was giving to me for free and I will not recommend it to my worse enemy,

Ralph Codio

Hanson, MA

"Don't buy this product!!!"

1.0 rating
Very Unsatisfied

I bought my house 3 years ago and this unit was providing the water for both heat and hot water. My first winter (ct) I had 5 service calls as it constantly was getting air in the lines and shutting down. We finally made it through the first winter only to start the process all over again. This time a water leak developed in the manifold. Not being the original purchaser (unit was 3 years old) they tried to screw me. Fortunately, the installer was related to the previous owner and he was able to get it covered under warranty…5 Hours to replace and I helped the guy do it. It will not provide enough water for both heat and hot water even with a 40-gallon water storage tank attached to the system. This is definitely going out in the trash when it goes down the next time…and as any owner of one of these knows, that won't take long. If you are in the market for one of these and your furnace servicing company recommends it, run like hell and find a new company. This is one of the biggest pos on the market.



"Weil-Mclain boilers suck!"

1.0 rating
Very Unsatisfied

Weil-Mclain boilers are crap!, Do not buy this product, nothing but trouble! Ultra 155 series, spent 12 thousand 8 years ago and I've had nothing but trouble, crap! Pure crap!

james o brien

Toronto, Ont

"Poor service"

1.0 rating
Very Unsatisfied

I have many of these Ultra boilers in my buildings they have poor warranty compartment they say your unit is covered but they yet to ship it out. I have been waiting months for a replacement chamber. I'm not sure to what the problem is but I have many more units to replace and it looks like I may have to replace all the ones that are ultra's I thought when I bought Weil Mclain boilers they were the best but they provide me wrong.

A. Pettiford

Philadelphia, PA

"Works well but quits every 6 months or so"

2.0 rating
Somewhat Unsatisfied

Boiler works reliably most of the time we had oil before so I cant say if it saved more then a regular efficiency gas boiler. S problem is the boiler just shuts off randomly once or twice a year saying supply too fast I called Weil Mclain and they just suggested testing the temp probes rather disappointing help for problem.

Greg Hill

Bethlehem, PA

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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