Triangle Tube
Triangle Tube manufactured stainless steel condensing boilers, indirect and direct-fired water heaters, and heat exchangers for residential and light commercial hydronic heating applications across North America. Founded in 1946 and owned by Groupe Atlantic, the company ceased operations on November 3, 2025.
- Company typePrivate
- Founded1946
- HeadquartersGloucester City, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Triangle Tube does
Triangle Tube is a Gloucester City / West Deptford, New Jersey-based manufacturer of stainless steel hydronic heating and water heating equipment serving residential and light commercial customers across North America. The company was founded in 1946, was the first to bring the fire tube heat exchanger to the residential market in 2004, and operated as a subsidiary of French conglomerate Groupe Atlantic, which acquired the company and leveraged its Ideal Boiler UK manufacturing platform that produces over 400,000 units annually. Its product portfolio spans condensing boilers (Instinct, Prestige, Ionic, Keystone lines), indirect and direct-fired water heaters (Smart 316, Cardinal, Ionic Volume, Keystone), and heat exchangers for pool/spa applications (Maxi-Flo, Brazed Plate, Plate and Frame), with modulating controls offering turndown ratios up to 5.5:1 and thermal efficiency of 95-97% on flagship lines. The company also offered a Wi-Fi monitoring accessory (Tsync) and a tiered Good/Better/Best warranty program tied to contractor registration and site commissioning practices.
Triangle Tube generated revenue through unit hardware sales to a B2B channel of stocking distributors and HVAC/plumbing contractors across the US and Canada, supported by regional territory sales managers, field technical support staff, and a dedicated Expert Academy training facility with a live fire lab in West Deptford. The go-to-market was channel-led with content marketing, AHR Expo participation, and contractor enablement programs (Share-N-Install, Find a Contractor locator) used to drive specification and registration. Effective November 3, 2025, Triangle Tube ceased operations, discontinued processing of outstanding orders, voided warranties prospectively, and continues to fulfill an active voluntary safety recall on certain Prestige and Aerco Esteem condensing gas boilers due to carbon monoxide risk, with spare parts available only through stocking distributors while supplies last.
Triangle Tube firmographics
Firmographics- Name
- Triangle Tube
- Legal name
- Triangle Tube
- Website
- https://triangletube.com
- Company type
- Private
- Founded year
- 1946
- Operating status
- Closed
- Headcount range
- 11–50 employees
- Short description
- Triangle Tube manufactured stainless steel condensing boilers, indirect and direct-fired water heaters, and heat exchangers for residential and light commercial hydronic heating applications across North America. Founded in 1946 and owned by Groupe Atlantic, the company ceased operations on November 3, 2025.
- Ownership category
- akta.pro rank
Triangle Tube industry classification
Industry- Product category
- Hydronic Heating Equipment
- NAICS
- Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Power Boiler and Heat Exchanger Manufacturing (33241)
- SIC
- Heating Equipment, Except Electric & Warm Air Furnaces (3433)
- akta.pro primary industry
- Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)
- akta.pro secondary industry
- Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)
Keywords
Where Triangle Tube is headquartered
LocationHeadquarters
- HQ city
- Gloucester City
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Triangle Tube business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D
Revenue model
- Boiler and Water Heater Equipment Sales: Triangle Tube manufactures and sells condensing boilers, combi boilers, volume water heaters, indirect water heaters, heat exchangers, and accessories to distributors and contractors in the residential and light commercial heating market.
- Spare Parts Sales: After ceasing operations in November 2025, spare parts are made available for purchase by stocking distributors as long as parts remain available. All purchases after November 3, 2025 have no warranty.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Good - Entry-level warranty with 2-year parts and 10-year primary heat exchanger coverage |
| Unit Pricing | Multi-year contract | Better - Mid-level warranty with 5-year parts, 2-year labor allowance, and 10-year heat exchanger warranty with registration |
| Unit Pricing | Multi-year contract | Best - Top-tier warranty with 6-year parts, 3-year labor allowance, and 10-year primary heat exchanger warranty with combustion analysis verification |
| Unit Pricing | Multi-year contract | Smart 316 Good - Lifetime tank warranty with 1-year parts coverage |
| Unit Pricing | Multi-year contract | Smart 316 Better - Lifetime tank warranty with 1-year parts and 1-year labor allowance (registration required) |
| Unit Pricing | Multi-year contract | Smart 316 Best - Lifetime tank warranty with 6-year parts and 3-year labor allowance (requires Smart 316 and Triangle Tube Instinct or Prestige boiler installed together plus combustion analysis) |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Triangle Tube product offering
Product offeringCore offering
Triangle Tube manufactures and supplies high-efficiency stainless steel condensing boilers (solo and combi models), volume water heaters, indirect water heaters, and heat exchangers for residential and light commercial hydronic heating applications. The company pioneered the fire tube heat exchanger for residential use and sells its products through a network of stocking distributors and HVAC/plumbing contractors throughout North America.
Product overview
Triangle Tube is a manufacturer of high-efficiency residential and commercial heating equipment. The product portfolio centers on condensing boilers (both solo and combi models), indirect and direct fired water heaters, and heat exchangers. The product lines include the Instinct series (floor and wall models), Prestige series (wall, cascade, and excellence models), Ionic series, and Keystone series. The company pioneered the fire tube heat exchanger for residential use and offers tank-in-tank technology in their Smart 316 indirect water heaters. Products integrate with Wi-Fi connectivity via the Tsync module for remote monitoring. The company ceased operations in November 2025 with spare parts still available through distributors.
Differentiator
Problem solved
Functional benefit
Brands
- Prestige: High efficiency condensing boiler line featuring stainless steel fire tube heat exchanger, available in wall and floor models. Legacy product first to bring fire tube heat exchanger to residential market in 2004.
- Instinct
- Ionic
- Smart 316
- Keystone
- Tsync
- Maxi-Flo
Quantifiable outcome
- 95% efficiency across entire range for Prestige boilers
- +4 more outcomes
Companies that use Triangle Tube
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles4 records
Triangle Tube technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Triangle Tube partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered minor and core.
- PHC NewsminorTriangle Tube's National Sales Manager Mark Avron participated in a podcast interview with PHC News at the 2020 AHR Expo to discuss company progression into the future.
- TM Sales Inc. (Jake Fear)minorJake Fear from TM Sales Inc. fronts the how-to and troubleshooting video series on triangletube.com. Content produced for contractors.
- Groupe AtlanticcoreTriangle Tube is owned and operated by Groupe Atlantic, a leading designer and manufacturer of boilers, water heaters, ventilation and air conditioning, heat pumps and more. Groupe Atlantic was founded in 1968 and is privately-owned with headquarters in Paris, France. The Group has a strong manufacturing culture and focuses on employees and customers. This parent company relationship provides manufacturing support and scale.
- Ideal Boiler (UK)coreIdeal Boiler is a leading boiler manufacturer in the UK with a rich history of developing quality products and produces over 400,000 units per year. Provides upgraded manufacture support for Prestige products. The Instinct is engineered and manufactured with reliability in mind in the same facility that develops these techniques for Ideal Boilers.
Scale indicators5 records
Recent moves7 records
Expansion highlights4 records
Triangle Tube competitors and assessment
Company assessmentDirect peers
- Navien: Manufacturer of high-efficiency condensing gas boilers and combi units for North American residential and light commercial markets. Direct head-to-head competitor to Triangle Tube's Instinct, Prestige, and Ionic lines in the same contractor channel.
- Viessmann: German premium manufacturer of condensing boilers and hydronic systems with a strong North American footprint. Competes directly with Triangle Tube's Prestige and Instinct lines; employs former Triangle Tube territory sales talent (e.g., Ray Parent).
- Heat Transfer Products (HTP): US-based manufacturer of stainless-steel heat exchanger condensing boilers (Everest, Phoenix, Versa-Hydro) serving residential and light commercial channels. Closest technology analog to Triangle Tube, also using stainless fire tube designs.
- Lochinvar: Manufacturer of high-efficiency commercial and residential boilers (Knight, FTXL, FBN) with strong North American contractor distribution. Wholly-owned subsidiary of A.O. Smith; competes with Triangle Tube's Keystone line in light commercial.
Broad incumbents
- Weil-McLain: Established North American boiler manufacturer (cast iron and condensing) serving residential and commercial hydronic markets. Competes across Triangle Tube's portfolio with broader legacy install base and longer-running warranty programs.
- Bosch Thermotechnology: Global HVAC manufacturer with substantial North American condensing boiler (Greensmart, Buderus) and water heating lines. Competes with Triangle Tube across residential hydronic and combi categories; broader portfolio and deeper channel.
- A. O. Smith: Major North American water heater and boiler manufacturer (parent of Lochinvar). Overlaps with Triangle Tube's Smart 316 indirect water heater and condensing boiler lines at scale via Pro Stock and wholesale channels.
- Rinnai: Manufacturer of tankless water heaters and condensing boilers (RE and i-SERIES) with deep North American distribution. Direct competitor in tankless/instantaneous hot water that overlaps Triangle Tube's combi and indirect water heater value proposition.
- Burnham Holdings: US boiler holding company (Burnham, Crown, Hampton, U.S. Boiler Company) producing cast iron and condensing residential boilers. Direct overlap with Triangle Tube's legacy hydronic footprint in the Northeast US.
- Bradford White: Major US manufacturer of commercial and residential water heaters (gas, electric, heat pump, tankless). Closest analogue to Triangle Tube's Smart 316 indirect-fired water heater and Keystone direct-fired volume water heater lines.
Market position
Strengths3 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Triangle Tube social profiles
Digital presenceTriangle Tube compliance and trust
Trust signalCompliance2 records
Triangle Tube financial estimates
Financial estimateRevenue estimate
Valuation estimate
Triangle Tube leadership team
Management profileNumber of profiles
Profiles11 records
Triangle Tube funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Triangle Tube M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Triangle Tube
What does Triangle Tube do?
Triangle Tube manufactures and supplies high-efficiency stainless steel condensing boilers (solo and combi models), volume water heaters, indirect water heaters, and heat exchangers for residential and light commercial hydronic heating applications. The company pioneered the fire tube heat exchanger for residential use and sells its products through a network of stocking distributors and HVAC/plumbing contractors throughout North America.
Is Triangle Tube a public or private company?
Triangle Tube is a private company. It is classified as corporate owned and is currently closed.
When was Triangle Tube founded?
Triangle Tube was founded in 1946. It employs 11 to 50 people.
Where is Triangle Tube based?
Triangle Tube is headquartered in Gloucester City, United States, in the North America region.
How does Triangle Tube make money?
Two revenue lines are on record. Boiler and Water Heater Equipment Sales are the primary driver. The others are spare Parts Sales.
Who are Triangle Tube's main competitors?
Direct peers on record are Navien, Viessmann, Heat Transfer Products (HTP) and Lochinvar. Broad incumbents are Weil-McLain, Bosch Thermotechnology, A. O. Smith, Rinnai, Burnham Holdings and Bradford White.
Does Triangle Tube have an API?
No public API is recorded for Triangle Tube.
What industry is Triangle Tube in?
Triangle Tube's product category is Hydronic Heating Equipment. Its primary akta.pro industry code is IMAHAKAD, Boilers, Furnaces & Process Heating Equipment, with a secondary code of IMAHAEAC, Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers). Its NAICS code is 333414 and its SIC code is 3433.