Dunes Heating and Air Conditioning LLC

  Installing a new AC unit is a significant investment—and on Sullivan’s Island, where heat, humidity, and salty coastal air put extra demands on your system, proper air conditioning installation is key. A poorly installed air conditioner can lead to inefficient cooling, higher energy bills, and costly repairs down the line. In this blog, we’ll explore some of the most common AC installation mistakes homeowners make—and how to avoid them. 1. Choosing the Wrong System Size One of the biggest mistakes is installing an AC that’s too large or too small. An oversized HVAC unit cools the home quickly but cycles on and off too often, leading to wasted energy and uneven temperatures. An undersized unit struggles to keep your home comfortable, especially during Sullivan’s Island’s hot summers. Work with a professional to perform a proper load calculation and select a system sized for your home. 2. Ignoring Ductwork Issues Even the best AC won’t perform well with leaky or poorly designed duc...