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LOCHINVAR Knight Wall Mount Boiler

Updated: Jan 14, 2016

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Overview of the Knight Wall Mount

The Lochinvar Knight Wall Mount Boiler is a high efficiency, stainless steel condensing boiler. It uses a stainless steel fire tube heat exchanger and a water-backed combustion chamber for increased efficiency. Five different venting options are available, allowing direct vent flexibility up to 100 feet. The seven models of the Knight Wall Mount range in heating capacity from 55,000 to 399,999 BTU/hr. The Smart System operating control features a multi-color graphic LCD display and a built-in cascading sequencer. The Knight Wall Mount has an efficiency rating of 95% AFUE and was named an Energy Star Most Efficient 2014 product.

Consumer Reviews of the LOCHINVAR Knight Wall Mount

Compare to Other Lochinvar Boilers:
#3  of 4 Lochinvar Boilers
2 of 5 stars 6 reviews

  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied

Date created: 2016-01-14 Name: J King
Location: Lanesborough, MA

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

"Complete hunk of junk. Do not waste your money."
Installed in August of 2010, nothing but problems. The factory blamed it on improper installation. In November of 2010, a factory technician came to my home and replaced a sensor he stated was defective. He inspected the installation, said everything was correct and off he went. Boiler ran for four days then locked out again. These boilers are rubbish. My first HVAC guy quit because he told me point blank they are known to be nothing but problems. The second guy tells me he loves them because he makes a fortune off of fixing them. He's been to my home 4-5 times a year and calls them "Lockinout" boilers. It is January of 2016, and seriously, I could have paid for a new boiler in what I have spent on tech calls. I will be replacing my Lochinvar Knight boiler this year no matter what. Do not buy one of these! You have been warned.

Date created: 2014-11-13 Name: A. Salgado
Location: Philadelphia, PA

Satisfaction Rating:

5 of 5 stars Very Satisfied

"Loving it"
I have had this boiler for about a year and it has been the best investment for our home in years. We replaced our Weil-McClain cast iron boiler from the 70's with a WHN-110. We have experienced several low temperatures of 5-10 degrees and the boiler does what it needs to do at a really high efficiency rate. It is super quiet; you can barely hear it. Our house, 1800 square feet, has 2 zones - one with large antique radiators covering about 1200 square feet, and the second zone covering the other 600 square feet with copper baseboards. I researched for over 2 years what I was going to do and decided the best system for my home was the WHN-110. Once I decided it was the one, I was looked over reviews and saw a lot of mixed opinions. I truly believe half or more of the negative opinions were related more to the installation and not the product. First, I never saw anywhere that any high efficiency boiler requires a low loss header; this is what makes these type of boilers work the way they are supposed to. It’s imperative to have one installed in your piping. Another highly suggested item is a Y-Strainer to keep any sediment from entering the system. Make sure to go to angieslist.com and hire a truly qualified tech do the job, not just a plain old plumber. I saved $2,000 in the boiler and installation because of the rebates that were offered by my gas company, so make sure to look for those. And finally, always familiarize yourself with the installation and owner’s manual to be sure that the installer is really doing the job they are supposed to do.

Date created: 2014-10-27 Name: Tim S
Location: Seattle

Satisfaction Rating:

4 of 5 stars Somewhat Satisfied

"WHN wall mount response"
The WHN boiler has been a very good performer for us. We installed two of the earliest units of this model and have installed many of them. Some of the problems you all have noted are very possibly a setup problem on the control. As far as taking so long to heat up, there is a boost function in the control for people who like to set back their heat at night. This does not work on radiant floors. Due to the limits of temperature on flooring, if you boost the temperature you could damage the flooring. If you have radiators or fin tube, etc., the boost function works great. As far as other problems, honestly, it mostly has to do with piping or control issues. Out of all the boilers we have installed, we have had very few repairs on the Lochinvar WHN. There are some good tech people at Lochinvar that your contractor should talk to if there are ongoing problems. I really do find, when it is an ongoing problem, that we all need to talk to tech support, and they do know if some common denominator is showing up in the service calls they receive. Quite helpful.

Date created: 2014-10-16 Name: J. Jones

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

"Rip off"
Had to replace the motherboard at $1000 after only 2 years. System cost $10000 installed, by reputable heating/cooling company in Massachusetts. It takes hours to heat the house to 68 degrees in the morning from 64 degrees at night. We have an automatic thermostat that turns on the system at 6 AM, and by 7 AM the house is still 64-65 degrees. Very frustrating to pay so much for such a lousy system.

Date created: 2014-10-01 Name: Huy Nguyen
Location: MA

Satisfaction Rating:

3 of 5 stars Neutral

"Installing 2 Knight Wall Mount boilers"
Hello, I hired a plumber to replace my 20-year-old heat boiler. He purchased 2 Knight Wall Mount boilers and 2 water tanks and installed them right now. I saw the unit, it is so complicated; a lot of electronic parts. Is it a good or bad decision? I would like something that is simple and low maintenance. Thanks, Huy Nguyen

Date created: 2014-03-14 Name: L. Gartner
Location: Traverse City, Michigan

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

"Lochinvar Knight Boiler a NIGHTMARE"
In May 2011 we bought a Lochinvar Knight Wall Mount Boiler model WHN 110 to replace 1 of our 3 natural gas hot water boilers. A little history will help you understand why we are so angry. For years we've had so many problems with 2 of our 3 boilers: a Weil McLain Gold gv-3 semi-condensing boiler installed in 1995 and a Burnham pxg2005awni installed in 1992. Our other Burnham boiler Series 2 p-206pv also installed in 1992 is still running well (in March 2014) & has had only 2-3 repairs in 22yrs. About 5 years after installing the Burnham boilers we kept smelling antifreeze in the room where one boiler was located inside a closet. The boiler also kept losing water & would autofill thus diluting the glycol. The heating company could never figure it out so we changed companies 4 times. We spent thousands of dollars on various fixes which never fixed the problem. The last fix was $5,000 to fix a pipe under the brick hall floor which was supposedly leaking. It was difficult to reroute these pipes because this part of the house is on a slab & we should have just ripped up the brick floor, it would've been a whole lot cheaper. A year later the boiler needed replacing & when they removed it they found it had been leaking underneath for a very long time and was the source of the antifreeze smell. When the heating company proposed a Lochinvar Knight Boiler with 95% effeciency, I researched it online and found horrible reviews. People said their houses were cold, couldn't get them to warm up to a normal temp & they had constant service calls from the boiler shutting down with a Lockout code requiring a service call. He assured me these problems were only because of improper installation & it was a very good brand. I even asked him if they received any kind of incentives or kickbacks for selling Lochinvar boilers & he said no. I told him we really just wanted a trouble free old fashioned less effecient basic boiler, not high efficiency, because we were sick of all the repairs. He said those boilers weren't made anymore, but there were simpler ones that were only 82% effecienct. Against my wishes, my husband went with their recommendation of the Lochinvar Knight Boiler........ And all the reviewers were right! We've had nothing but problems from the beginning with countless service calls to adjust it & figure out why it's shutting down & why it won't heat our house after spending $10,400.00 for this system. Luckily they haven't charged us for service calls because it's never worked correctly from the beginning. But the hassle of dealing with it is awful. We have paid them to vacuum the fin tubing in our bedroom to see if that would help it get warm, of course we didn't have a problem with the old boiler heating up our bedroom nice & toasty in the evenings. In Dec 2013 the transformer went out, which is a pretty big repair. We like to sleep in a colder room & turn the heat down to 65-66 at bedtime, but turn it back up to about 73 degrees for 3-4 hours before bed. My husband has to go upstairs about 4pm & turn it up to 80 degrees so maybe by 9pm it will reach 73 degrees. The heating company told us the Lochinvar isn't made to be turned up & down, just keep the thermostat at the same temp. I've never heard of anything so ridiculous! The purpose of a boiler is to heat my house so it's warm & not take hours to do it, and if it doesn't do that, then it's worthless! Nowadays the focus seems to be about making the most energy effecient boiler, losing sight of the original purpose of the boiler which is to heat a house. This emphasis doesn't take into account how complicated & tempermental these high efficiency boilers are, and that they will cost you hundreds of dollars & possibly thousands in service calls. Any energy savings that was gained is so small in comparison to what will be spent on service calls & repairs. When companies lose sight of this main purpose and decide that energy effeciency is their primary goal everyone will ultimately be paying way more to keep their houses warm on top of having no heat when it's 10 degrees outside in winter & the boiler breaks once again. Two weeks ago our Weil McLain boiler broke so I was researching boilers when I found this website. I have no idea what to buy & guaging by all the reviews don't think there is a company that makes a high quality reliable boiler.

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Other Knight Wall Mount Reviews

There are only a few comments about the Knight Wall Mount on online forums, and most of them are positive. Comments on heatinghelp.com state that the controls are among the best in the business and that the Knight is an excellent unit. Most problems with the Knight Wall Mount discussed on online forums appear to be due to poor installation and not the unit itself.

Knight Wall Mount Warranty

The Knight Wall Mount boiler warranty is comprised of a 12-year pro-rated warranty on the heat exchanger and a 2-year parts warranty. Labor costs are not included in the warranty.

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