Shopping for a new air conditioner can be exciting because it means you’re getting closer to a cooler, more comfortable home. At the same time, it can feel like there’s a lot to figure out. Efficiency ratings, equipment sizes, brands, features, warranties, financing—where do you even start?
One person says buy this model. Another recommends something completely different. In this guide, Thiele Heating & Air Conditioning will break down what actually matters when buying a new air conditioner so you can make a decision that feels right for your home and budget.
What Energy Efficiency Means
One of the biggest decisions you’ll make when buying a new air conditioner is how much energy efficiency you want. A more efficient system typically costs more upfront, but it can also lead to lower monthly utility bills for years to come. For many Lawrence homeowners, that tradeoff is worth considering, especially during long Indiana summers when the AC runs almost every day.
The measurement used to compare efficiency is called the Seasonal Energy Efficiency Ratio (SEER). Think of it like miles per gallon for a vehicle. The higher the SEER rating, the more cooling the system can produce for the electricity it uses.
When comparing systems, here’s what you’re really paying for:
- A higher Seasonal Energy Efficiency Ratio means the equipment uses less electricity to cool your home.
- An energy efficient system can help reduce monthly cooling bills, especially during July and August.
- Many older homes in Lawrence still have AC units with SEER ratings of 10 to 13, while today’s systems often start around 14.3 SEER2 and can go much higher.
- A properly sized central AC system with a higher efficiency rating may provide better humidity control and more consistent temperatures.
- Higher-efficiency equipment often includes upgraded components and technology designed for quieter operation and improved comfort.
- Over time, many homeowners find that the reduction in utility costs helps offset some of the higher purchase price through lower energy costs.
The right efficiency level depends on how long you plan to stay in the home, how often you run the AC, and your budget. A good air conditioning company will help you compare options and determine which efficiency rating is best for your situation.
Why AC Sizing Matters So Much
Many people assume that if they already have an air conditioner, the next one should be the same size. That’s not always true. Homes change over time, and sometimes the original system wasn’t sized correctly in the first place. A properly sized air conditioner helps keep your home comfortable, controls humidity better, and avoids unnecessary wear and tear.
Here are some of the factors that go into sizing an AC correctly:
- Your home size is one of the biggest considerations, but it’s not the only one. Things like ceiling height, insulation levels, window placement, and sun exposure all affect how much cooling capacity your home actually needs.
- An oversized unit may sound like a good thing, but it can cool the house too quickly and shut off before removing enough humidity. The result is often a home that feels cool but still damp and uncomfortable.
- An undersized unit has the opposite problem. It may run almost constantly during hot Lawrence summers while struggling to maintain the temperature you set. That extra runtime can increase energy bills and put additional strain on the equipment.
If you’re planning to replace an existing AC unit, don’t assume the old one was the right fit. A professional load calculation helps determine the amount of cooling power your home needs today, which may be different from when the original system was installed.
How Different Compressors Compare
When shopping for a new air conditioner, most homeowners focus on brands, efficiency ratings, and price. Those are important, but the compressor deserves attention too. The compressor is the part of the system responsible for circulating refrigerant and producing the cooling that your home feels.
The type of compressor you choose affects comfort, humidity control, efficiency, noise levels, and how consistently your home maintains the desired temperature. Most central air conditioning systems today use one of three compressor types.
Single-Stage Compressors
A single-stage compressor has one operating speed: 100% capacity. When the thermostat calls for cooling, the system turns on at full power and stays there until the desired temperature is reached. These systems typically have the lowest upfront cost and are often a good fit for people looking for a straightforward cooling solution.
Because the system is always running at full output, you may notice larger temperature swings and less humidity control compared to more advanced options.
Two-Stage Compressors
A two-stage compressor can operate at two different output levels. Most of the time, it runs at a lower setting, which is often enough to keep the home comfortable. When additional cooling is needed, it automatically shifts to full capacity.
Because the system can run longer at a lower output, many people experience more even indoor temperatures, better humidity control, quieter operation, and improved efficiency compared to a single-stage system.
Variable-Speed Compressors
Variable-speed compressors are the most advanced option available today. Instead of operating at one or two fixed speeds, they can adjust cooling output across a wide range of levels based on the home’s needs.
Rather than repeatedly turning on and off, the system makes small adjustments throughout the day to maintain a comfortable home. This typically provides the most consistent temperatures, the best humidity control, the quietest operation, and the highest efficiency of the three compressor types.
Some Lawrence homeowners are perfectly happy with the lower upfront cost of a single-stage system, while others find the added comfort and efficiency benefits of two-stage or variable-speed equipment well worth the investment.
What Makes One AC Quieter Than Another
Buying a new air conditioner isn’t just about keeping the house cool. It’s also about how the system feels to live with every day. Some buyers don’t mind hearing the AC kick on, while others want it to blend into the background as much as possible. If you’re replacing an older system, you may be surprised by how much quieter many of today’s models are.
- The outdoor unit is where most cooling noise comes from. Some systems produce a noticeable hum, while others are designed to operate much more quietly.
- The indoor unit plays a role, too. Air moving through the ductwork and the blower motor can create sounds that vary from one system to another.
- Many modern indoor air handlers use variable-speed technology that ramps up and down gradually instead of blasting on at full power every time.
- Higher-end air conditioner systems often include sound-reducing technology that can make a noticeable difference if the equipment is located near a bedroom window, outdoor patio, deck, or other areas where people spend a lot of time.
Manufacturers measure sound levels in decibels (dB). For perspective, some standard air conditioners operate around 70 to 75 decibels, which is similar to a vacuum cleaner from several feet away. Quieter premium systems may operate in the mid-50s decibel range, which is closer to the sound of a normal conversation. If noise is important to you, be sure to ask about sound ratings while comparing equipment options.
Why Smart Features Are So Attractive
Today’s modern systems can do a lot more than simply cool the house. Depending on the model, smart features can make your home more comfortable, help lower operating costs, and make it easier to take care of your HVAC system.
- Smart thermostats let you adjust settings from your phone, create schedules, and manage your home’s comfort even when you’re away.
- Some cooling equipment can automatically adjust performance to better control humidity, helping the house feel more comfortable during hot Indiana summers.
- Many systems can remind you when it’s time to change filters or schedule maintenance, making it easier to maintain peak performance.
- Certain high-efficiency models earn Energy Star certification and include features designed to improve comfort while using less electricity.
Some people love the latest technology, while others prefer to keep things simple. The key is finding features you’ll actually use and enjoy.
There Are Several Types of Air Conditioning Systems
When you’re shopping for a new air conditioner, you’ll quickly discover there are way more options out there. Central air conditioners, heat pumps, and ductless systems all cool homes, but they do it in different ways.
Central Air Conditioners
Central air conditioners are the most common cooling systems in Lawrence and throughout Central Indiana. They use ductwork to distribute cool air throughout the house and work alongside existing heating systems like a furnace. If your current setup has kept your home comfortable over the years, replacing it with a newer central AC is often the simplest path forward. Today’s systems are more efficient, quieter, and better at controlling humidity than many units installed 10 to 20 years ago.
Air Source Heat Pumps
An air source heat pump cools your home in the summer and helps heat it in the winter using the same piece of equipment. That’s one reason more homeowners are taking a closer look at them. Heat pumps can be very efficient during much of the year and may reduce how often your furnace needs to run. If you’re planning to upgrade both your cooling and heating and cooling equipment in the future, a heat pump may be worth considering.
Ductless Mini Splits
A ductless mini split is often used in spaces where traditional ductwork isn’t available or doesn’t perform well. They’re popular in additions, finished basements, garages, bonus rooms, and any room that’s always too hot or too cold. Many mini split systems allow different areas of the home to be controlled independently, so one space doesn’t have to feel exactly like another.
The right air conditioning system depends on your house, your budget, and what you’re hoping to improve.
How Much Does a New Air Conditioner Cost?
The cost of a new AC system can vary widely from one home to the next. The size of the house, efficiency level, features, ductwork condition, and whether you’re replacing other HVAC equipment can all affect the total cost. Investing in a new air conditioner is a big decision, and it will need a professional installation to protect all of the important components.
Ready for a Quote? Have More Questions? Contact Thiele!
Your friends at Thiele Heating & Air Conditioning would be happy to provide a free quote for your AC installation in Lawrence, IN. We’ve been serving Central Indiana since 1883—making us the oldest HVAC company in Indianapolis!—and folks have trusted us for well over a century because we provide fast service, fair prices, and fantastic people.
As a Bryant Authorized Dealer, we can help you replace an old unit with a reliable new unit that fits your home and budget. We’ll install it correctly, stand behind our work, and continue servicing the system for years to come. Financing is available for qualified customers, so if you’re ready for something better, we’re ready to help with your new air conditioner in Lawrence.