Welcome to the Rural Energy "F" Glossary Terms!

At Rural Energy, we understand that the world of renewable energy and sustainable solutions can sometimes seem complex and filled with technical jargon. That's why we've created this comprehensive Glossary Page – to help demystify and clarify the terms and concepts you'll encounter on your journey towards a greener, more sustainable future.

Whether you're a homeowner looking to make energy-efficient upgrades, a business exploring renewable energy options, or simply someone curious about the latest eco-friendly technologies, our glossary is here to provide clear, concise definitions.

RuralEnergy.com is more than just a resource; it's a community dedicated to advancing rural energy solutions that are sustainable, efficient, and practical. We believe that understanding the language of renewable energy is the first step in making informed decisions that benefit both the environment and your specific needs.

Your Partner in Rural Energy Solutions

As you explore our glossary, remember that Rural Energy is here to assist you every step of the way. From initial inquiries to the implementation of sustainable energy solutions, our team of experts is committed to providing guidance tailored to the unique challenges and opportunities of rural environments.

We invite you to use this glossary as a starting point for your journey into a more sustainable future. Should you have any questions or need further assistance, our team at RuralEnergy.com is always ready to help.

Let's embark on this journey together – towards a cleaner, more sustainable world.

Ready to Explore Our Glossary? Click a Letter Below to Unlock a New World of Rural Energy Related Terms!



A temperature scale with the freezing point of water 32F and the boiling point 212F at sea level.


Fans circulate warm air through the ducts and out the vents.

Fan Limit Switch

A control device in furnaces and heating systems that turns the blower fan on or off based on temperature settings, ensuring proper heat distribution.

Fire Bricks

In most stoves the inside walls of the firebox are lined with loose-fitting panels usually called firebricks. These serve 2 purposes - firstly they help to keep heat in the firebox leading to higher efficiencies and cleaner combustion, and secondly to protect the outer walls of the stove from the direct heat of the flames. Traditionally the firebricks were made from Refractory Clay


The chamber within a heating appliance where fuel is burned to generate heat, such as in wood stoves, fireplaces, or boilers.


The chamber inside a stove where the actual combustion (burning of fuel) takes place.

flame sensor

A device which indicates if the stove fuel is burning, or if ignition has been lost. The indication may be transmitted to a signal or to a control system.


Sheet metal used to make a water-tight seal between the chimney and the roof.


Flue refers to a duct, pipe, or chimney through which combustion gases or exhaust from a heating appliance are vented outdoors. It serves to safely convey combustion byproducts away from the building, preventing indoor air pollution and maintaining proper ventilation. The flue is a critical component of heating systems, ensuring efficient and safe operation by directing exhaust gases away from occupied spaces.

Flue Diameter

the diameter of the flue, Larger fires/stoves need larger flues as they simply have a greater volume of flue gases that need to exit the fire.

Flue Gas

The product of combustion from the appliance through the breeching and/or chimney into the atmosphere.

Forced Air Heating

A heating system that distributes heated air throughout a building using a fan or blower, typically powered by a furnace or heat pump.

Free-Standing Stove

a stove with legs or a base on which it stands. A free-standing stove can fit inside a fireplace opening with a small gap around it or can stand in the open e.g. in a room with no fireplace


A brand name for a group of refrigerants used in heating, ventilation, air conditioning, and refrigeration systems to transfer heat between indoor and outdoor environments.

Frost Protection

A feature in heating systems that prevents damage to pipes, equipment, or crops by maintaining temperatures above freezing during cold weather conditions.

Fuel #1

A fuel oil similar to kerosene

Fuel #2

A distillate home heating oil

Fuel Efficiency

The measure of how effectively a heating system converts fuel into usable heat energy, often expressed as a percentage or energy rating.

Fuel Oil

Any oil used in an engine or furnace


A heating system that generates warmth by burning fuel or using electricity to produce heat, typically distributing it through ductwork to various rooms or zones in a building.

We Value Your Contributions!

At RuralEnergy.com, we believe that our Glossary Page is a collaborative and ever-evolving resource enriched by our community's diverse experiences and insights. If you come across a term or concept related to renewable energy or sustainable practices that you think should be included, we warmly invite you to share it with us! Your suggestions are invaluable in helping us ensure that our glossary remains comprehensive, relevant, and responsive to your needs.

Reach out to us through our Contact Page or email us your proposed terms and a brief explanation. Together, we can build a resource that truly reflects and serves the interests and curiosities of everyone passionate about rural energy solutions.

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