Triangle Tube Reviews

Not surprised this company went out of business in November 2025. I have had mine for 12 years and it's been nothing but a headache. I am having it serviced now, November 2025 and the last time I had to spend big money fixing it was December of 2024, not even a year ago.

I have a 3 year old Triangle Tube Solo Instinct and have had nothing but problems for 2 years. I’ve had several boiler experts look at it and No one can determine why I’m getting error code 19 as well as failure to fire 5 times error messages. I have to constantly hit the reset button at all hours of the day and night. Totally unreliable. Triangle Tube won’t return my calls and because I’m not the original homeowner, it’s not under warranty. They really don’t care about their reputation. I would not buy one of these if you are considering since the company doesn’t stand behind its product.

I had this unit installed 10 years ago and had no problems till this. The boiler has been howling for 2 seasons now and from what I have read and talk to my installer, (that change to a different product line) it is an on going problem with little solution. Service personnel adjust mixtures, replace everything with little or no results. If there is a solution I have yet to find it. I hesitate to call a service man and pay up to $100 an hour to for him to 'experiment' to find a solution.

If I could post a video here, you would see the temperature of our hot water from the Tri Tube Instinct Combi fluctuating back and forth. A 14 degree F range. This is what our Instinct combi is doing constantly. Before this our house was red tagged for an internal propane leak in the unit. The valve was replaced, but we are still dealing with a 14+ degree temp cycling of our potable water. As you might guess, showers are horrible. (This was sent by me 2 years ago to the company. The gas leak was 4 years ago.) We have had our Instinct for 4 years with constant problems and finally in the 4th year the Company has replaced an incorrect part that they knew was in the unit the entire time, but never admitted to before. The operation of our unit with that incorrect part has caused damage that is now having to be dealt with.

I Have been installing Triangle Tube Boilers for over ten years now. I have read through all of the negative review on this site. I can tell you that Triangle Tube has excellent customer service and stands by their warranty. 95% of the issues are installation related. There are very few good boiler technician and a bunch of bad ones. Do your research and find a good company to install a great product and you will not have any issues with your Triangle Tube boiler.

Our Company install Triangle Tube Boiler. Lost a sale do the bad reviews. Looking through these review not often was it ever mention we do as consumer do our part do the annual maintenance. That is 80% of all high efficiency boiler failures 10% in most cases is installation lately this may be 50% many contractors cut corner omit such items as debris separator or dirt trap with magnet which is very important these days. Making sure of proper circulation through the boiler at all times outside of the zones. Other 10% equipment issue again most will not pay attention to critical errors during maintenance.

The Boiler was installed in 2014. No one seems like to know the issue. Sometimes it doesn’t work means No heat but the Boiler stays on. I called the company. They didn’t want to help because the ownership was changed.

I purchased a Triangle Tube Prestige Solo 110 boiler in 2008, so I understand that this is now a relatively old boiler. Good thing, that means I can soon replace it with something reliable. I've scarcely gone a year without having to replace a major component. A partial list of replaced items: outdoor temp sensor, blower motor, igniter, flue temp sensor, low water cutoff sensor, combustion test sensor, and last and most aggravating, the $1000 control module... recently for the second time. The control module is an electronic part and really should not fail within the boiler's life, and now it's failed after only 2 years. Thanks for your 1-year part warranty, Triangle Tube! Do you yourself a favor and avoid this brand at all cost.

Initial unit installed 11/14. Lasted until 7/19. Service person found internal burning. TT agreed to replace unit and I'd be responsible for installation. Another $1500. for second installation. Service company sent defective unit back to TT at the company's direction. TT failed to reimburse service company, who apparently paid upfront for the unit to receive new boiler for installation, with the understanding they'd be reimbursed once TT received the original defective unit. TT never paid installer after they received the defective original, so the installer came back to me to pay them the $1400. Wholesale cost they'd paid to TT. I refused.

Had a prestige solo boiler installed by professional 4 years ago. 3 1/2 years in the hot water (off and on) became cold. Technician came out and replace one part. It worked off and on and then didn't. Technician came out again and replaced two parts. It worked off and on and then didn't. Technician came out again said everything looked ok but boiler needs a clean but too busy to do he would come back. He came back when it really wasn't working. Said the sensor was faulty. $750 for labour and parts. $750 again to clean boiler. Boiler is only 4 years old and the inconvenience of 4 times having technician come out and the expense - not happy at all. Emailed Triangle Tube and they said sorry and referred me to warranty. Didn't hear after one week so emailed again. Still have not heard a week later. Maybe look elsewhere if you need a boiler.

We had this boiler installed by professionals 8 years ago - Halifax, Nova Scotia. Had the boiler serviced every year or two. Two small repairs (~$200 each) since install. This past spring (2022), started to hear a loud 'bang' on start-up. Had igniter replaced ($350). Seemed to fix the issue, not 100% sure though as heating season was over and boiler not on much; but then this fall, started hearing bangs again. Doesn't bang every day and never bangs on DHW, on on DH, as far as I can tell, but still, loud and coming from a nat gas boiler is no fun to hear at all! I have had two different techs in to do combustion test and adjustments ($300). No luck.

I've been maintaining and replacing TT boilers for a few years. The Prestige boilers from 2005 have been getting 12 or more years on average. The Instinct that I've installed recently have been running fine. On the old ones, the fire tube bolts have failed. On the new ones just one display screen on a prestige. Very good performance from the instinct boilers. Only about 2500.00 for the boiler from my supply house. The one time I used warranty was smooth. The times I've used tech support was useful and easy to correct my problems. I like these boilers. I suggest using a hydronics specialist, sometimes plumbers don't fully understand.

Purchased a instinct Triangle Tube boiler in 2020. Had it professionally installed and seemed to work fine. After a few weeks it started to make a really loud howling noise from the exhaust. The install came back, called triangle tube and it was a gas air mix issue. Was resolved after that until the spring when it started again. It was so loud that our neighbors started to complain and some even called the authorities for noise ordinance. We called the installer again and he came out and resolved the issues again.

We had a Triangle Tube Solo 110 installed 10 years ago. The first 5 years worked great, only occasional reset was needed, but no big deal. Since then, the motor went, then ignitor was changed twice, control panel was changed, water pressure sensor was changed. Numerous visits by plumbers. The error code given by the machine not consistent, and in many cases, misleading. Every year, more than $1,000 has to be spent to keep is running. I am sure there is room for the company to improve on reliability and consistency. For a new installation, I will not go with Triangle Tube again.

We installed the Prestige 399 Triangle unit 12 years ago. The unit runs great except every 3 years the blower unit fails, which costs $1,200 each time. The first time the motor itself stopped working, the last three times the plastic propeller is getting brittle and shredding itself in pieces. Very disappointing.

I have personally installed several Prestige Solo boilers and Challenger boiler with zero issues. Proper installation and maintenance is crucial for any high efficiency boiler and Triangle Tube has been bulletproof in my experience.

I have a house with five kids and we never run out of hot water. Best thing we did was put in a Smart tank water heater. I would recommend this product. In fact, I'm looking at putting one in at my mother's home.

I would like to speak to Chris who says he went to Triangle Combi Boiler school. I am a technician who hasn't gotten a chance to attend their school but am having a popping issue and have talked to tech support with no success. **

We had the Triangle tube prestige boiler and hot water installed in 2011. We had lots of issues in the beginning but our plumber was fantastic to us, and returned and worked with the factory for days. First the intake fan assembly went, now 8 years later the tank is leaking. We must pay $2000 upfront for tank and pay for the plumbers cost. Their warranty is useless! Our plumber suggest another boiler, imagine 8 years and it has to be replaced! This is the worse company and product I have ever seen. DO NOT USE TRIANGLE TUBE PRODUCTS, OR YOU WILL PAY ONGOING FEES.

We had a Triangle Tube Prestige 110 installed in November of 2011. Have had nothing but problems since. Installers were obviously new to these units. Had to have them keep coming back. They kept throwing parts at it including a motherboard. The last time they came back they changed the supply line coming from the water heater from the supply side to the return side thinking this would solve some issue. When the unit fires, it pops and crackles like there is air in the unit but after about hundred attempts to bleed the air, it does not help. The installer quick coming back as they were losing their ** on our unit and wanted to start charging us every time we called them. The unit also keeps reaching the High Boiler Temp and shuts off. we have to do a manual reset several times a day. Obviously some sensor had gone bad. We spent almost $14K on this and it has been junk.

3 years after installation the tank started leaking flooding my finish basement, tried to collect on the warranty and they will only cover the tank itself about $800, Navien are cheaper, outstanding tech support and parts next day when under warranty. First units were kind of ** but the new ones NCB and after are really good. I know. I am a professional plumber. G.

OMG is all I can come up with. This product should and needs to be taken off the market. Own for almost seven years and it has been nothing but trouble. For the record if anyone is looking at this product, do your research and DO NOT buy.

Next a year later a sensor (PSRKIT63 DHW Sensor) died and had to be replaced (cost approx. $60.00 plus time and expense to pick it up and plumber cost). The plumber could not fix this. A rep from Triangle Tube came to the house and found the issue.

Had Triangle Tube Prestige 110 Solo installed after Hurricane Sandy (Long Island N.Y) and EVERY year when the temperature drops into the 20's the boiler turns off and reads failed ignition. (Note: works fine all year when outside temps are 30 and above). Ignitor has been replaced, installer instructed me to leave front cover off = no difference. Gas flow has been measured = no issues. Condensate drain has been cleaned. Installer/service Tech has yet to actually properly diagnose and repair reoccurring problem.

Six years ago my husband decided it was time to replace the furnace and the hot water with something more efficient. Since then he has passed away and I am left with the job of continuously running out of hot water. The furnace itself broke down last year. The furnace we replaced we had for thirty years and we never had a service person come for repairs. We did it have it cleaned once a year but that was the extent of it all. The company that installed the furnace are forever giving me excuses for the failure, and I believe they have replaced just about every part that there is to replace and it seems there is no end in sight.

I have a Triangle Tube Prestige Boiler and hot water tank. They were installed in a newly expanded/rebuilt house 6 yrs ago. The boiler has failed every single year and twice in most years. Switches, sensors, parts that have deteriorated etc. Last year after only 5 yrs the hot water tank begun to leak and had to be replaced at a cost of over $2K. Two months later the sensor on the tank went leaving us without hot water for days. I've spent an average of $1K - $1.5K every year on this boiler not including the hot water tank replacement. This review seems similar to others I have read on this site. Triangle Tube products are terrible!!

Installed nearly ten years ago by professionals. After a short period of adjustments things went ok for almost two years then recurring problems with ignition (loud bang on startup especially in colder months). Spent $5,000+ in as many years troubleshooting and this never solved the problem. Water tank failed at year 8 (covered but not the significant installation fee). When this failed after only 13 months decision to quit was easy. New machine is Weil - McLain and works like a charm and comes highly recommended.

4 years in a row we have had to spend at least $1000 in service to keep this unit running. Very few service pros in our area, Boston. Ignition switch issues, leaks, system flush requirements, you name it. Go with another brand.

We were told this was the best, state of the art boiler. We had installed 3 years ago and, with the exception of one failure caused by a major power surge which was not the fault of the unit, we have had a problem every year. I would not recommend this boiler. It has limited authorized technicians in our area and is predictably unreliable.

Does not stand behind manufactures defect on warranty. Had unit less than 8 years and screws blew out of unit. These were welded in and unit used under normal household conditions. No 10-year warranty.

I keep trying to adjust the temp down on my hot water. I lower it a few degrees every few weeks. Eventually it goes from scalding to lukewarm. Now it says outside sensor is open and nowhere in the multiple manuals is that covered. The manual and control panel was designed by morons. There used to be a time where you could use common sense to program a hot water heater. You just turned the dial up or down. Now you have to figure out which menu to which thermostat, adjust it down, and then wait and see. Then there is the staining on top from a leak somewhere. I had to wait 3 weeks, in northern Wisconsin, with no heat in January.

ACV Triangle Smart 60 - Mediocre Product at a Premium Price. I cannot recommend this product or company. The reason is ACV Triangle charges a premium price claiming to be a superior product, however; my customer experience has proven it to be a mediocre product. Furthermore, the company does not stand behind their product & chooses not to support their customers. There is no reason to pay the premium for ACV Triangle when the Home Depot will give you the same experience.

I'm a homeowner and installed a Triangle Tube Prestige Solo 110 boiler in November of 2010. It has worked extremely well ever since. The only problems I've had have been too low water cutoff and frost condensing in the fresh air inlet tube. I have not had to call a service company for advice or for repair. Every year we have extended periods of outdoor temperatures of -20F and colder. After comparing my natural gas bills I have saved 40% compared to my previous cast iron open flame boiler (1960's vintage). I would definitely consider another one when this one wears out.

I purchased this heater system (Prestige Excellence 110 heater) after a long in service with a salesperson 9 years ago. I did have the service contract but decided to cancel it after 3 years because the cost of the service for the year was more than an average repair. The last four years I have had the gas company come to repair the unit. It is always the same thing, they have to order parts and be without heat for 3 days. Two weeks ago the heater broke down again. After waiting for parts they were able to get the heat working but not the hot water. This week I get a call from the people living at my house that the heater won’t turn off and the house temperature is in the 90's. I go to the house and found that when the heater failed the week before it almost caught fire. The interior wall insulation had burned off. They had taped the manual to the outside of the same wall and the manual was burnt. Imagine the heat that had been giving off to cause that.

We have had this Triangle Tube Prestige system for 8 years. Since then: 1) The blower fan housing disintegrated, 2) The system leaked through the spiral vents into the cabinet and the controller board. Now the heat won't shut off in one of the zones, although I replaced the thermostat, thinking that was the problem. We had a small system that worked fine for over 30 years, then had this piece of junk installed. I am considering having a heat/AC company come in and replace the whole system. Having it repaired, at a minimum of $300 per repair visit, seems like throwing good money after bad.

I wished I reviewed this site before purchasing the CC125H. I see that installers give great reviews. While customers give poor reviews. If the company would review all these complaints and improve their customer service they might find themselves leading the industry. I called in three times about my unit. First for a boiler motor and second a error message (5-E). The boiler motor failed the day it was turned on. It took a week of a hundred phone calls and warranty form to get them to send me a replacement. SHAME ON THEM.

Had Triangle Tube hot water/heat system in my house installed during new construction in 2012. Since then I have had 2 of 3 actuators fail, and system shutdown (not heat or hot water) a minimum of once a year. It is supposed to reset itself, but never seems capable, and I end up calling a plumber each time, averaging about $200. When it works it is efficient, but if I leave for a week in the winter, I can't leave my house empty and have to get someone daily to see if I have heat.

Triangle Tube Prestige Solo 110 with domestic hot water system: Nothing but problems - my worst homeowner purchase. Installed in 2010, $8k for the boiler, another $3k for the hot water part. So far: 2 of 3 water circulating pumps failed (not Triangle Tube's fault, but it is a complex system and has a lot of components). Main circuit board had intermittent fault that took 2 years for TT to finally replace. During this time we had many flameouts resulting in no heat or hot water until boiler was manually restarted. (No audio alert so you don't know boiler is out until you run out of hot water or the house gets cold). Hot water storage tank failed (TT did replace it but it cost me $75 for the thermostat that wasn't covered).

I have a Triangle Tube boiler. The ONLY good thing about it is that I didn't pay for it originally, it came with the house when we moved in. It has leaked since day one and even showed up on the inspection report when I bought the house, at that time the unit was only 2 years old. I've spent thousands on repairs and parts, and have gone days without heat in winter months trying to get parts. Don't ever buy anything from this company!!!

The name Prestige Excellence 110 should have been Prestige Terrible 110. I've it installed 2013. After that it breaks down every year. I've to have people come to fix it yearly. It was supposed to be top of the line but it's only true on cost, nothing else. I will never recommend it to any one.