How to Ensure You Install the Best High Efficiency AC System

Air conditioning systems have existed for such a long time and over time they have been improved to give them a longer lifespan and a much higher efficiency. One of the closely watched parameters of these systems is the SEER rating. SEER stands for Seasonal Energy Efficiency Ratio and measures heat pump and air conditioning cooling efficiency which is normally calculated by dividing the cooling output for a typical cooling season by the total electric energy input during the same time; the higher the SEER rating the greater the energy efficiency.
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Premium category AC systems have SEER ratings that are 16 and above. Many of these systems also have a built-in feature also known as capacity modulation. Modulating AC systems have improved humidity control, lower energy consumption, better air quality and guarantee a much more comfortable environment throughout the home in all seasons. However, not all modulating AC systems are the same.

Modulating systems typically fall into two broad groups; two stage capacity and continuous or variable capacity modulation. Below is a discussion on the benefits each of these categories brings.

Energy Consumption

The two stages modulating systems operate at two discreet capacity levels; 100% on the hottest days and 67% on light load AC days which include most nights. When operating at 67% capacity, the two stage system uses less energy because the demand is significantly reduced.

A variable speed system on the other hand can slow down and deliver as low as 20% capacity while at the same time having the potential to go up to 100% capacity. This delivers precise cooling as per your demands therefore resulting in lower energy consumption.

Systems that have two stage compression technology are usually rated between 16 and 18 SEER whereas variable speed systems can go up to 25 SEER or even higher depending on the design of the system.

Humidity Control

According to the Center for Disease Control and Prevention (CDC), the optimal levels of humidity in an indoor setting should be kept as low as 50%. High humidity levels over 60% and above in a building can lead to the growth of mold which in turn brings health complications. In many parts of the United States including Florida, humidity control is a much bigger problem and when solved brings much relief compared to high temperatures. As an AC unit operates, air flows over the condensing unit and this result in the removal of humidity from the air. The longer the system runs, the more the humidity is removed from the indoor air. Two stage systems run for longer periods compared to traditional fixed systems thereby giving the two stage system an additional dehumidification capacity.
Variable speed systems are normally designed to have the longest run times at lower energy levels and low speeds thereby becoming the most favorable in humidity control.


When a variable speed AC runs for a longer time, air continuously moves through the space and through the air filter at a much higher frequency. This continuous air movement reduces cold and hot spots within your house resulting in a very comfortable environment and cleaner air throughout.
When compared to traditional or fixed systems, two stage systems offer significant improvement in energy savings and comfort. Variable speed AC units on the other hand provide the best overall comfort and bring significant savings in energy for the homeowner. This reduces your bills and subsequently your expenditure. Installing a variable speed AC is therefore something remarkable especially on hot humid summer days.