AC units come in all different shapes and sizes, with features that range from humidity control and quiet operation to compact design. In this article, we help you determine the best air conditioner for your space. Learn how to size your AC unit, about installation considerations, and more.
Types of air conditioners:
Central Air Conditioners – ideal for whole home air conditioning
Mini-Split Systems – flexible, discrete, and ductless installation with individualized control
PTACs – commonly referred to as in-wall units or packaged terminal air conditioners
Window Units – for cooling a small space where installing a whole home system is not possible
Portable Air Conditioners – a temporary solution for cooling small spaces in a pinch
Pro-tip! If you’re here because your existing AC unit isn’t getting the job done, it might be time to consider whether you need a new air conditioner.
Central Air Conditioning
Ideal for cooling your entire home
If you’re looking for a comprehensive solution for cooling your entire home, central air conditioning is reliable and robust. These systems operate with two pieces of HVAC equipment that work together to remove heat from indoors and convert it to cool air using refrigerant. The cool air is then circulated through ductwork and released via vents.
Takeaways:
- Provides reliable, efficient, and even cooling throughout the entire home
- Controls humidity and airflow
- Quiet operation
- High efficiency
- If there is no existing ductwork, then upfront installation costs may be higher than alternative cooling solutions (however, increased cooling efficiency will likely reduce monthly utility expenses)
Mini-Split Systems
Sleek, ductless design for individualized comfort
Whether you’re looking to provide cooling comfort in a mother-in-law suite or throughout your entire home, mini-split systems are reliable, offer individualized temperature control, and are aesthetically pleasing. They are equipped with two components, an indoor unit and outdoor unit. However, unlike central air conditioners, mini-splits do not require extensive ductwork. Instead, the equipment is connected via a small refrigerant tube and electrical wiring. Both are concealed through the wall.
Because they are ductless air conditioners, mini-splits are adaptable to fit most spaces without the high upfront installation costs of central air conditioning. Furthermore, they independently control the temperature of each space. Typically, this makes them the most efficient cooling solution compared to the alternatives we are discussing.
From old home retrofits and additions to garages and rental spaces, customers rely on mini-split systems’ adaptable, sleek, and reliable cooling capabilities. Not to mention, up to six mini-split units can be connected for cooling multiple spaces or entire homes. Lastly, don’t forget to check local rebates! Due to the high-efficiency ratings of mini-splits they often qualify for tax rebates that help offset installation costs. We make finding HVAC rebates simple with our Rebate Center.
Where to buy mini-splits: Durastar’s mini-split offering is available nationwide for direct purchase through Build With Ferguson. We recommend working directly with an HVAC contractor to select the best combination of HVAC products and to secure the full extent of the manufacturer’s warranty.
Takeaways:
- No ductwork required
- Ideal for cooling both individual spaces and whole homes
- Quiet operation
- Higher efficiency
- Concealed cooling with flexible installation options (ceiling mounts, wall mounts, floor/ceiling flex mounts, horizontal slim ducted, one-way cassettes, and more!)
- Up to 6 zones
PTACs
Well-suited for small residential and commercial spaces
PTACs are a common cooling solution for hotels, motels, and senior living facilities because they offer individualized comfort for small rooms. Like mini-splits or window units, they do not require ductwork and, therefore, have lower installation costs. Please note that PTACs are significantly larger than window units and must be mounted on an exterior wall, a few inches off the floor. The unit should be clear of furniture, curtains, and other obstructions to ensure proper airflow and ventilation.
Takeaways:
- Personalized temperature settings with easy-to-adjust controls
- Straightforward installation and maintenance
- Requires adequate wall space and must be free from obstructions
- Commonly used for commercial applications such as air conditioning hotel rooms
Window Units
A low-cost alternative for cooling small rooms
Tried-and-true, window units have long been used as a cost-effective solution for air conditioning during the hottest months. This is especially accurate in northern climates that are relatively cool the majority of the year. Their installation is straightforward and temporary, making them ideal if you are renting or saving for a more permanent cooling solution. Carefully place the unit within a suitable window frame per exact specifications and instructions. Make sure to use a support bracket as many local laws require them. Then simply plug the unit into a standard outlet. If you are only using it for cooling, then it should be stored when the warm season has ended.
Pro-tip! Be picky about which window to place your unit. If the selected window receives direct sunlight, it may require your air conditioner to work harder, therefore reducing its efficiency and lifespan.
Takeaways:
- Easy to install
- Comparatively inexpensive to purchase
- Not as visually appealing or quiet as mini-splits
- Best for small spaces unless multiple units are installed
Portable Air Conditioners
Flexible option when in a pinch
Portable air conditioners are easy to move from room to room – so long as there is window access for the system’s venting hose. Often, they are used as a cooling alternative when window units are not an option. Although these units have a low upfront cost, constant operation can substantially increase your electric bill. However, despite the mediocre efficiency ratings and operating noise, they can be useful for cooling second-story bedrooms during a heat wave or supplementing a window unit in large spaces.
Takeaways:
- Low upfront costs and easy-to-use
- Not as efficient or quiet as alternative types of air conditioners
- Ideal for small rooms
- Easy to move throughout your home
How to choose the right air conditioner
Now, with a basic overview of the different types of air conditioners, it’s time to review your options and determine the best cooling solution for your space. Here are a few considerations when making your selection.
Is this a permanent or temporary solution for air conditioning?
If it is a permanent solution, then consider a system that offers higher efficiencies. This will result in long-term savings and is often paired with quieter motors.
Conversely, if this is a temporary solution, consider a system with a lower upfront cost:
- Window Unit
- Portable Air Conditioner
What size air conditioner do you need?
When it comes to air conditioners, size does matter. If it is too large, the unit will not run efficiently; if it is too small, it will struggle to cool the room evenly. As a general rule, every square foot of space requires 20 BTU. However, several factors may influence the necessary BTU output such as poorly sealed windows and doors, ceiling height, insulation values, climate, the number of windows, and the number of occupants. That is why we recommend working with a certified HVAC contractor. They will help you select the best equipment for your home and needs.
What are the installation requirements for the air conditioner and will it be visually appealing in your space?
As mentioned above, some air conditioners, such as PTACs, require substantial, unobstructed wall space. Other systems, like portable AC units, require a nearby window for its venting hose. Consider the installation requirements of your options before making the final decision. If you’re looking for a streamlined, ductless, and discrete AC solution, then a mini-split system might be your golden ticket.
At Durastar, we take pride in providing reliable HVAC equipment for every budget. From whole-home air conditioning units to single-zone and multi-zone ductless mini-splits, we stand behind the quality and reliability of various types of air conditioners. If you’re looking to substantially increase your heating and cooling efficiencies, consider a complete HVAC system from Durastar.