HVAC & Mechanicals

Aug 18 2018

Roof framing, window options, and a mechanical advantage add up to lower bills and a higher quality home

May 26 2018

A simple and affordable balanced ventilation solution for small tight houses

Apr 20 2018

Extreme heat and humidity can drive moisture deep into framing cavities which can cause mold, rot, and structural damage

Apr 17 2018

Left-, right-, and straight-cutting snips with single- and compound-leverage each have their place on a jobsite

Mar 11 2018

Rinnai uses the cold water line as a recirculating loop to save the cost of adding more plumbing


Feb 1 2018

Turns out, ducts buried under insulation actually can work to save energy and eliminate condensation inside the ducts. If you seal and insulate them first


Oct 19 2017

The physics and mechanics of turning cold water into hot showers 

Oct 18 2017

Three-pronged solution to indoor pollution: Isolate, eliminate, and ventilate

Aug 15 2017

Two fans talk to each other to replace stale air with fresh air


May 9 2017

Houses cannot expand and contract with changes in pressure like balloons can. Instead, they need paths for air to balance the pressure

Apr 17 2017

Keep mechanical equipment within the envelope to improve the quality of houses and homes

Feb 9 2017

Condensation is when moisture in the air hits a cool enough surface to convert the vapor into water.

Feb 2 2017

As houses are built tighter, they exchange less air between inside and outside. This saves energy, but the inside air can get stale if you don't have a fan and a plan

Nov 2 2016

These mighty-mites can provide heating, cooling, and air-mixing for a well-insulated house, but they look so darned—European. It is hard for many Americans to warm up to them.  


Oct 7 2016

Stack effect is relentless: it is always working, when you’re awake or asleep, even during blackouts. And it feeds on itself.


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