Suppose you have a new, top-of-the-line heating and air conditioning system, as well as excellent insulation and everything else that a modern home would benefit from in keeping the indoor temperature within comfortable bounds while using energy most efficiently. Is there still a role for a ceiling fan, or are they just a legacy appliance from a time before air conditioning?
The answer is: yes, ceiling fans can be effective if used right, but don’t be in a hurry to get one if your home does not already have one.
With energy efficiency a leading factor in the optimization of furnaces for the home, the best modern models are condensing furnaces. By capturing and condensing water vapor in the air, condensing furnaces take advantage of the tighter, more closed system that characterize modern homes and yielding ever better energy conservation. But a condensing furnace may require fine-tuning the intake and exhaust of air to balance levels of humidity in the home.
In the context of heating and cooling systems, laminar flow describes the smooth, unhindered passage of air through duct work. The opposite of laminar flow is turbulent flow, where the air tumbles around, getting caught in pockets, churning chaotically in vortices and doing a poor job of circulating. When air flows through the system smoothly, energy is conserved, whereas when the air flows turbulently, friction increases, momentum is lost and energy is wasted.