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Main product image of Instinct Solo 155-142,000 BTU Output Direct Vent Hot Water Gas Boiler (NG)
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Instinct Solo 155-142,000 BTU Output Direct Vent Hot Water Gas Boiler (NG)

SKU:
INS155S
Rating:
(2)
Q&A:
(0)
Instinct Solo 155-142,000 BTU Output Direct Vent Hot Water Gas Boiler (NG)
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INS155S has been discontinued
Discontinued November 8, 2025
This product was discontinued by the manufacturer.

Product Highlights

Product Highlight: Fuel Type
Natural Gas
Product Highlight: System Type
Water
Product Highlight: BTU Input
155000 BTUs

Description

The Triangle Tube brand has been discontinued by the manufacturer as of 11/3/2025. Suggested replacement units will be available on our website and replacement parts will continue to be available as supplies last. If you'd like any further assistance, please contact our customer service team.



Rebates:
This product qualifies for a federal tax rebate of up to $600. Federal Rebate click for more info

In addition to the federal rebate, you may also be eligible for rebates from your local utility company and state. Search your region and state in the link below for information about local rebate programs that may apply to you. Triangle Tube Rebate Center

Triangle Tube is best known for feats of hydronic innovation and incredibly efficient products. The Triangle Tube Instinct is a high-efficiency condensing boiler featuring a fire tube heat exchanger and a market-leading warranty program. The Instinct includes Triangle Tube's CTRLMax Control System for a 60-second setup and simple, plain text operation. An included universal 3-in-1 vent adapter directly accepts PVC, Polypropylene and stainless steel. Available in both solo and combi models, the Instinct boiler is the perfect solution for highly efficient instant or indirect water heating.

Specs

Application:

Heating

Fuel Type:

Natural Gas

Efficiency:

95%

System Type:

Water

Gas Connection:

3/4"

BTU Input:

155000

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Product Reviews

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Showing 1-2 of 2 reviews

Reliable, High-Quality Boiler

TT's Rock! They Are Made Very Well And The Inyards Are High Quality As Well!
STHEO
Colorado
3 years ago
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This is a base line unit for sure.

I am kind of dissapointed in this after having installed quite a few of TT boilers. This one is still a firetube boiler, but the inside is very builder series. The wiring terminal block is really lame and looks like it was assembled in someone's garage. Does it work, yes. Does it look like the quality product that your used to getting from TT, NO! This looks like a completely diffrent manufacture made this thing, and they slapped their name on it. Go with the Prestige series instead, you will be way more happy with it.
Andy
Wisconsin
5 years ago
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