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Table of Contents

When to Replace Your AC Unit

Choosing the Right Size AC Unit

Energy Efficiency and SEER Ratings

Technology and Features to Consider

Cost and Financial Benefits

Working with HVAC Experts

  1. Resource Center
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What to Know Before Buying a Central AC Unit Replacement

8 min readUpdated Oct. 02, 2024Kimberly HillegassHVAC
What to Know Before Buying a Central AC Unit Replacement

Replacing a central air conditioning (AC) unit can feel overwhelming, especially with the range of options available today. Choosing the right AC system affects your home’s comfort, energy costs, and even its environmental impact. Understanding what factors to consider, such as sizing, efficiency, and professional installation, can make the process smoother and support the long-term performance of your new air conditioning unit.

KEY TAKEAWAYS

  • Replacing your AC unit can improve energy efficiency and lower utility bills.
  • Proper sizing and professional installation are key to maintaining home comfort.
  • Modern AC units offer advanced features that improve cooling performance and convenience.

When to Replace Your AC Unit

Regular yearly HVAC maintenance and timely repairs are crucial for extending the lifespan of your HVAC system and ensuring it operates efficiently. During annual check-ups, professionals can identify small issues before they escalate into costly problems, improve energy efficiency, and keep your home comfortable throughout the year. Skipping these routine inspections can lead to unexpected breakdowns, higher energy bills, and may even shorten the overall life of the system. By prioritizing regular maintenance and addressing repairs promptly, you can maximize your system's performance and delay the need for a complete replacement.

Deciding when to replace your air conditioning system can be challenging, but recognizing the key signs can help you make an informed decision. A timely replacement not only improves comfort but also reduces energy consumption and repair costs. Understanding these factors before starting the search for a new air conditioning unit will help you choose the right system for your home and budget.

Signs It's Time for a New Air Conditioning Unit

Several indicators suggest it may be time to replace your current AC system. Here are the most common reasons homeowners upgrade to a new air conditioner:

  • Age of the Unit: Most air conditioning systems last around 10 to 14 years. If yours is over a decade old, it likely isn't as efficient as modern units, which can offer substantial energy savings and more consistent cooling.

  • Frequent Repairs: As an AC unit ages, repairs tend to become more frequent and costly. If repair expenses are adding up, it may be more cost-effective to invest in a replacement home AC unit rather than continue with patchwork fixes.

  • Inconsistent Cooling: Struggling with uneven cooling or airflow? Older systems often have difficulty maintaining consistent temperatures, leading to uncomfortable hot spots or excessive humidity, which can signal it's time for an upgrade.

  • Rising Energy Bills: If you’ve noticed a steady increase in your energy bills, an aging or inefficient AC unit could be the culprit. Newer, energy-efficient models can help reduce monthly utility costs, particularly during hot weather.

Benefits of Replacing Your HVAC System

Investing in a new air conditioning unit comes with a range of benefits beyond just cooling:

  • Improved Energy Efficiency: Newer models offer higher SEER ratings, leading to reduced energy consumption and lower utility bills.
  • Enhanced Comfort: Upgrading to a modern system helps regulate indoor temperatures more effectively, providing a comfortable environment year-round.
  • Reduced Environmental Impact: High-efficiency units use less energy, which can lessen your home’s environmental footprint.

Choosing the Right Size AC Unit

Selecting the correct size air conditioning unit is important for keeping your home comfortable and energy-efficient. An improperly sized system can cause uneven cooling, higher energy bills, and unnecessary wear on the unit.

Common Issues with Incorrect AC Unit Sizing

When it comes to choosing an air conditioner, bigger isn’t always better. Here are the main issues you may encounter with an incorrectly sized unit:

  • Oversized Units: A unit that’s too large will cool your home quickly but may cause short cycling. This frequent on-and-off cycling reduces efficiency, increases wear and tear, and results in uneven temperature control.

  • Undersized Units: An AC that’s too small will struggle to cool your home, especially on hot days. It may run constantly, leading to higher energy consumption and more frequent maintenance.

How to Choose the Right Size AC Unit

Several factors influence the proper size for your new air conditioning unit. Consider your home’s square footage, insulation, windows, and ceiling height. A professional HVAC technician can perform a detailed load calculation to ensure the right fit, optimizing both cooling and energy efficiency.

Energy Efficiency and SEER Ratings

When selecting a new air conditioning unit, energy efficiency plays a big role in keeping your energy bills low and your home comfortable. A key factor to consider is the Seasonal Energy Efficiency Ratio (SEER), which directly impacts both performance and long-term savings.

What is SEER?

The SEER rating measures how efficiently an air conditioning unit cools your home. A higher SEER rating means the unit provides more cooling for each watt of electricity it uses, making it more efficient. Choosing a unit with a higher SEER can reduce your energy consumption, especially during hot seasons.

Why Efficiency Matters

Investing in an energy-efficient air conditioning unit can lead to significant long-term savings. While high-efficiency units may have a higher upfront cost, they can help lower your energy bills over time, especially in areas with longer cooling seasons. This not only benefits your wallet but also reduces your environmental footprint by cutting down on energy use.

Technology and Features to Consider

When choosing a new air conditioning unit, modern technology and advanced features can greatly improve both efficiency and comfort. Understanding key components like compressors and built-in smart technology can help you make the best choice for your home.

Compressors: The Heart of Your AC Unit

The compressor is a critical part of any air conditioning system, responsible for cooling your home. The type of compressor your unit has can greatly affect efficiency and performance.

  • Single-Stage Compressors: These operate at full capacity regardless of the cooling demand. While they are effective, they may use more energy and result in noticeable temperature fluctuations.

  • Two-Stage Compressors: These adjust output based on the cooling demand, offering more efficient operation, quieter performance, and consistent temperatures. For most homes, a unit with a two-stage compressor is the better choice for both energy savings and comfort.

Smart Features and Modern Technology

New air conditioning units often come equipped with advanced features that offer greater control and energy efficiency:

  • Programmable Thermostats: These allow you to set specific cooling schedules, helping to lower energy use when you're not at home while maintaining comfort when you return.

  • Smart Home Integration: Many modern units can connect to smart home systems, allowing for remote control and monitoring. Some systems even make automatic adjustments based on your preferences and habits.

  • Variable-Speed Fans: Units with variable-speed fans adjust airflow to maintain consistent temperatures and control humidity levels, making your home more comfortable and the system more efficient.

Cost and Financial Benefits

Investing in a new air conditioning unit can be a major expense, but it offers both immediate and long-term financial advantages. By considering available incentives and focusing on energy efficiency, you can maximize your savings over time.

Financial Incentives

When upgrading to a high-efficiency air conditioner, you may be eligible for various rebates and tax credits. Many utility companies, state programs, and even federal initiatives offer financial incentives to offset the initial cost of purchasing energy-efficient systems. Be sure to check the specific eligibility requirements in your area to take full advantage of these opportunities.

Long-Term Energy Savings

One of the biggest financial benefits of a high-efficiency air conditioning unit is the potential for long-term savings on energy bills. With reduced energy consumption, especially during hot seasons, homeowners in warmer climates can see significant reductions in monthly costs. The higher the SEER rating of the unit, the more you save on energy over time.

Increasing Home Value

In addition to energy savings, installing a modern, energy-efficient air conditioning unit can boost your home's value. A well-maintained, efficient HVAC system is often an attractive feature for potential buyers, potentially offering a return on your investment if you decide to sell in the future.

Working with HVAC Experts

Although purchasing and installing an air conditioning unit on your own might seem tempting, HVAC systems are complex and require professional expertise. Working with experienced HVAC professionals helps guarantee that your new air conditioner operates efficiently and reliably.

The Importance of Professional Installation

Proper installation maximizes the performance and lifespan of your air conditioning unit. HVAC professionals will make sure your system is correctly sized for your home, installed with precision, and optimized for energy efficiency.

Benefits of Expert Advice

An experienced HVAC technician can offer guidance tailored to your home's layout, local climate, and specific cooling needs. This expert advice helps you select the best replacement air conditioning unit for long-term comfort and energy savings.

Warranty and Ongoing Support

Professional installation often comes with warranties that cover both the equipment and the labor, offering protection for your investment. In addition, many HVAC providers offer ongoing support and maintenance services to keep your system running smoothly for years to come.

Upgrading your air conditioning unit is an important decision that can affect your home's comfort and energy usage. By working with HVAC experts, focusing on efficiency, and making sure installation is handled properly, you can enjoy reliable performance and long-term savings.

To maintain your system's efficiency and extend its lifespan, don't forget to schedule regular HVAC maintenance and address any repairs promptly through our HVAC repair service.

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Glossary Terms

A humidifier is a device designed to increase humidity levels in a single room or an entire building, improving air quality and comfort.

Swamp cooling, also known as evaporative cooling, is a method that cools air through the natural process of water evaporation. It is energy-efficient and environmentally friendly, particularly effective in hot, dry climates.

Freon is a trade name for a group of chlorofluorocarbons (CFCs) used as refrigerants in air conditioning and refrigeration systems, known for its role in ozone depletion.

An inverter AC unit is an air conditioning system equipped with inverter technology that allows it to vary the compressor speed, enabling precise temperature control and increased energy efficiency.

Common Appliance Symptoms

The most common reasons your Whirlpool washer won't stop filling are a clogged water valve, a bad water-level pressure switch, or a malfunctioning electronic control board.

The most common reasons your Whirlpool washer won't spin or drain are a seized gearcase, a broken motor, or a failed door switch.

The most common reasons your Whirlpool washer won't turn off are a malfunctioning electronic control board, broken motor or a jammed door lock assembly.

The most common reasons your Whirlpool washer won't start cycle are a malfunctioning electronic control board, jammed door lock assembly or a faulty user interface.

The most common reasons your Whirlpool washer vibrates are a damaged suspension rod, malfunctioning electronic control board or a dead fan.

The most common reasons your Whirlpool washer is experiencing the rinse cycle not working are a broken lid switch, a bad water-level pressure switch, or a malfunctioning electronic control board.