The Knowledge

A miscellaneous collection of heating related theory and calculations, an objective view of the use and misuse of types of technology, water treatment and much much more.




February 16, 2021

BLACK DUST - Sulphidation in gas lines and appliances

Since the UK started using natural gas to heat homes there have been issues with the accumulation of black dust […]

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August 4, 2020

Thermodynamics without maths - Part 2

Thermal Conductivity While we have covered a little on the heat capacity of substances as their ability to hold varying […]

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August 3, 2020

Thermodynamics without maths - Part 1

Thermodynamics covers the physics of heat and its relationship with matter and other forms of energy, and is involved with […]

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May 15, 2020

Balancing Heating Systems - The Ultimate guide

Are automatic balancing trv's worth the extra money?

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May 14, 2020

How to test and set your pump speed

how do we measure and work out the flow rate we need around a system? This article is supplementary to […]

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May 13, 2020

What you don't know about lockshield valves!?

This article is supplementary to the ultimate guide to balancing, please also check that out! Many lockshield valves have poor […]

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May 12, 2020

Do we really need DT20?

The falsehood of DT20 This article is supplementary to the ultimate guide to balancing, please also check that out! There […]

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May 12, 2020

Understanding pressure and flow

This article is supplementary to the Ultimate balancing article, check it out! rules of the pump! This states the relationship […]

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May 12, 2020

Does Balancing Increase Boiler efficiency?

It is widely believed that balancing a heating system increases boiler efficiency by reducing the boiler return temperature and increasing […]

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March 9, 2020

The Heat Geek range rating method

Range rating heating appliances can help reduce boiler cycling, keep the appliance cooler, more efficient and generally prolonging its life.  If you […]

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