Heating Fuels

Bioheat® Fuel

Ultra-low-sulfur heating oil blended with renewable biodiesel made from soybeans, recycled cooking oil, or other sources.

Bioheat is a drop-in renewable blend — no equipment changes required. Most CT dealers blend in 5%–20% biodiesel (B5 to B20). Some forward-leaning programs go higher.

It's the heating-oil industry's answer to decarbonization: lower lifecycle carbon today, on the same boiler that's already in your basement.

Related terms

Ultra-Low-Sulfur Heating Oil (ULSHO)

Modern heating oil refined to contain 15 ppm sulfur or less — cleaner, more efficient, and easier on equipment.

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Boiler

A heating system that heats water and circulates it through radiators, baseboards, or radiant tubing.

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BTU (British Thermal Unit)

The basic unit of heat — the energy needed to raise one pound of water by 1°F.

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Heating Oil Tank Guide

Sizes, materials, placement, warning signs, and CT rules.

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Propane Tank Sizes Guide

Common sizes, placement considerations, and Connecticut requirements.

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