Mechanical Mentor

Stoves, venting, and home systems explained

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Basic Concepts of Thermodynamics: Systems, Laws & Processes

Thermodynamics can look like a collection of unfamiliar terms and equations. Its basic logic, however, follows a repeatable sequence:

By Gus Halloran · Aug 7, 2026

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Fireplace Soot: Causes, Safe Cleaning, and Warning Signs

Black residue around a fireplace is not automatically a cleaning problem. Before choosing a brush or chemical, identify the likely deposit, note where it…

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Pellet Stove Pipe: Venting Rules, Clearances & Common Mistakes

Which pipe a pellet stove actually requires, the venting configurations that work, clearances, and the install mistakes that cause smoke and CO.

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Why Is My Water Not Getting Hot? Safe Troubleshooting Guide

Safety first