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.