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Air Conditioning Replacement & Installation Services

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AC Replacement & Installation

Whether your air conditioning unit is cooked or you’re sweating another season without AC, your local One Hour Heating & Air Conditioning has you covered. Our air conditioner replacement services bring immediate relief from another hot, sticky summer.



Keep your cool with the experienced technicians at One Hour Heating & Air Conditioning. We're committed to providing top-notch service and ensuring your complete satisfaction. Our goal is to keep you cool and comfortable all season long.

Air Conditioner Unit Replacement – What to Expect

Our AC replacement services help homeowners determine whether their AC unit can be repaired and, if not, lay out a clear plan to replace the faulty system quickly. Once we know there’s no way to fix the old unit, your technician will highlight a range of replacement options, from similar AC replacements to energy-efficient air-source heat pumps. We’ll provide a detailed estimate of the cost of replacing the air conditioner and a clear timeline for when work will start and end. Before recommending a replacement, we thoroughly inspect your existing system to ensure a replacement is truly the best option. This includes:


  • Unit inspection: We check for refrigerant leaks, compressor issues, and other common problems. We also consider the age and overall condition of your unit.
  • Unit sizing: Proper sizing is important for a new AC unit. Our technicians will perform a load calculation to determine the correct BTU (British Thermal Unit) rating for your home, ensuring optimal cooling performance.
  • Type of refrigerant: We also consider the type of refrigerant used in your current system. Newer, more environmentally friendly refrigerants are available, and we can help you choose the best option for your needs. We'll also inform you of any potential rebates or incentives available for energy-efficient models, helping you save money on your new AC system.

Air Conditioner Installations – What to Expect

Keep your cool with simple, affordable air conditioning installation services. In most cases, our installation customers are adding central air conditioning for the first time, which may include additional work to connect the new system to the home’s ductwork and filtration system.


Installing central air conditioning for the first time involves careful planning and execution to ensure optimal performance and efficiency. Our technicians will guide you through the process, taking into account several key factors:


  • Home assessment: Our technicians will assess your home's layout and existing ductwork, if there is any, to ensure proper airflow and efficient cooling.
  • Zoning system options: We can help you design a zoning system that allows you to control the temperature in different areas of your home, improving comfort and saving energy.
  • Ductless mini-split solutions: Ductless mini-split systems are a great option for homes without existing ductwork. These systems are easy to install and offer flexible cooling solutions for individual rooms or zones.
  • Insulation and sealing: Proper insulation and sealing are essential for maximizing the efficiency of your new AC system. We can identify areas where insulation is lacking and recommend solutions to improve your home's energy performance.

Types of Air Conditioning Units We Install

As a national leader in home cooling, your local One Hour Heating & Air Conditioning is ready to replace or install any residential air conditioning system on the market, including:

  • Central air conditioning
  • Air-source heat pumps
  • Ductless mini-splits
  • Wall air conditioning units
  • Window air conditioning units

No two homes are alike. That’s why our technicians take time to evaluate your home and make informed recommendations on the most cost-effective ways to replace your heat pump or AC unit. What you had may not be what you need!

Six Signs It’s Time to Replace Your AC

Even well-maintained air conditioning systems have a functioning lifespan. Depending on the quality of the unit, the regularity of maintenance, and the frequency of use, most AC systems last 10-20 years. In hotter, more humid climates, systems tend to last shorter periods.


These are the six most common signs you may be ready for a new AC, mini-split, or heat pump:


  1. Poor performance: Worn-out and malfunctioning ACs and heat pumps don’t cool as consistently or efficiently as they once did. If you notice warm air coming from vents after your AC unit or heat pump runs for a few minutes, it requires a professional inspection.
  2. Insufficient airflow: Older units may not consistently circulate air to all parts of the home, resulting in hot or cold spots and higher energy bills.
  3. Frequent cycling: Also known as short-cycling, this occurs when the AC or heat pump turns on and off constantly, often for just a few minutes at a time. Frequent cycling adds wear and tear, increases energy expenses, and fails to keep your home comfortable.
  4. Structural issues: Whenever you spot physical damage to an AC or heat pump, or hear odd sounds and humming, often caused by structural issues, call the pros. Common problems include corrosion, water leaks, exposed wiring, and damaged or obstructed vents and coils.
  5. Constant repairs: If your AC system requires frequent spot-fixes, it’s time to make a change. Replace the AC instead of relying on repeated service calls to keep your home cool.
  6. Higher energy bills: Older AC units are less efficient than today’s models and may use even more energy as they age due to worn parts. If you notice a spike in your energy bill, it might be time for an AC upgrade!


If you’re experiencing any of these problems, contact your local One Hour Heating & Air Conditioning to schedule an inspection!

Benefits of Upgrading to a New, Energy-Efficient AC System

Upgrading to a new, energy-efficient AC system offers a multitude of benefits for homeowners. These benefits include:


  • Lower energy bills: Reduce your monthly expenses with a more efficient system.
  • Improved comfort: Enjoy consistent temperatures and enhanced comfort throughout your home.
  • Quieter operation: Experience a more peaceful environment with a new, quieter AC unit.
  • Better air quality: Breathe easier with advanced filtration systems that reduce allergens and pollutants.
  • Increased home value: Make your home more attractive to potential buyers with a modern, efficient AC system.
  • Environmental responsibility: Contribute to a more sustainable future by reducing your carbon footprint.

Upgrade Your Home AC Unit Today

Experience the ultimate in home cooling comfort with One Hour Heating & Air Conditioning. Trust our experts for reliable AC replacement and installation services. We'll ensure your system is perfectly sized and efficiently installed. Request an appointment online. You can also call us 24/7 at (512) 861-1639 to get started.

You’ve Got Questions
AC Installation and Replacement FAQs

  • What is the cost to install central AC?

    Installing a central heating and cooling system could cost anywhere from $2,500 to $25,000 or more depending on several factors, including the size of the system needed (measured in tonnage), type of system (straight air versus heat pump), system configuration (split system, mini-split system, packaged system), the efficiency of the system (measured in SEER, the higher the SEER, the higher the initial cost), and the complexity of the installation (jobs that are more complicated take longer and cost more). The need for new ductwork or modifications can also add to the overall cost of your project. Having an HVAC professional perform a proper heat load calculation on your home and inspect the ductwork to ensure it is adequate will help you choose the right system for both your home and your budget.

  • How do you install a mini-split AC?

    Installing a mini-split AC involves mounting the indoor air handler, placing the outdoor condenser unit, drilling a small hole through the wall for the refrigerant line, and connecting the electrical and drainage components. It also requires vacuuming the lines and charging the system properly. Because it involves electrical work and refrigerant handling, professional installation is highly recommended to ensure safety, performance, and code compliance.

  • Can I upgrade to a more energy-efficient AC system?

    Yes, newer AC systems offer higher SEERs, improved comfort, better indoor air quality, and large savings. With an improved system, you can expect lower energy bills and maintenance costs, as well as potential tax incentives and an increased home value.

  • Why is my AC not blowing cold air?

    If your AC isn’t blowing cold air, it could be a sign that the system is old, low on refrigerant, or has a failing component like the compressor. In some cases, repair may solve the issue, but if your unit is over 10 to 15 years old, it may be cost-effective to consider replacement for better performance and efficiency.

  • Do you provide same-day AC maintenance?

    Yes. One Hour Heating & Air Conditioning offer same-day emergency HVAC services, including AC maintenance. Technicians are available 24/7 and arrive fully equipped to handle most maintenance needs on the spot.

  • What size AC unit do I need for my house?

    The size of the AC unit you need is measured in tons (1 ton = 12,000 British Thermal Units [BTUs]) and depends on your home’s square footage, type of construction, insulation values, ceiling heights, windows, and climate. A professional HVAC load calculation will provide the most accurate sizing for both comfort and efficiency. An improperly sized system can lead to increased energy usage, an uncomfortable home, and a shortened lifespan.

  • How long does AC installation take?

    AC installation typically takes 4 to 8 hours for most homes. The timeline can vary based on the system type, home layout, and whether any additional work, such as ductwork and electrical upgrades, is needed.

  • Can I install an AC unit myself?

    While it’s possible to install smaller units like windows or portable ACs yourself, it’s not recommended for larger systems. Central AC units and ductless mini-splits require professional installation to ensure proper sizing, safe electrical and refrigerant handling, and compliance with local codes. Attempting to install these systems on your own can lead to safety risks, reduced efficiency, and voided warranties.

  • Why is my AC leaking water?

    Your AC may be leaking water due to a clogged condensate drain line, a dirty air filter, low refrigerant levels, or a damaged drain pan. These issues can cause condensation to build up and overflow. A professional technician can diagnose and fix the problem to prevent water damage.

  • How long will my new AC last?

    A new AC system typically lasts 12 to 20 years with proper maintenance. Factors like usage, climate, and routine care can affect its lifespan. Regular tune-ups and filter changes help extend performance and efficiency.

  • Should I repair or replace my current AC unit?

    If your AC is over 10 years old, needs frequent repairs, or isn’t cooling efficiently, replacement is often more cost-effective than continued repairs. 

  • How long does it take to cool a house after AC repair?

    After an AC repair, it typically takes a few hours to cool your home, depending on the outside temperature, home size, and system efficiency.

  • Is AC replacement worth the investment?

    Yes, replacing your AC can be a smart investment – especially if your system is 10 to 15 years old. Older units tend to be less efficient and need more repairs. A new system can improve comfort, reduce energy costs, and boost your home’s value.

  • Will my home be without AC during replacement?

    Briefly, yes. The technicians will need to disconnect your air conditioner to install and connect your new system. Most AC replacements can be completed in less than one day, but more difficult replacements can take longer.

  • What maintenance is required after replacement?

    After AC replacement, schedule annual professional maintenance to keep your system running efficiently and maintain your warranty. This includes cleaning coils, checking refrigerant levels, inspecting components, and changing filters regularly.

  • What’s included in a professional AC maintenance visit?

    A professional AC maintenance visit typically includes inspecting and cleaning coils, checking refrigerant levels, tightening electrical connections, testing system performance, lubricating moving parts, and replacing or cleaning the air filter. These steps help improve efficiency, prevent breakdowns, and extend the life of your system.

  • Can I perform any AC maintenance myself?

    Yes, you can perform basic AC maintenance tasks yourself, such as replacing air filters every 1 to 3 months, clearing debris around the outdoor unit, and keeping vents clean and unobstructed. However, professional maintenance is still important for inspecting internal components and ensuring optimal system performance.

  • Will maintenance help lower my energy bills?

    Yes, regular AC maintenance can help lower your energy bills by improving system efficiency. A well-maintained unit uses less energy to cool your home, which reduces wear and tear and helps avoid costly repairs.

  • How do I prepare my home for AC installation?

    To prepare for AC installation, clear the area around where the indoor and outdoor units will go, ensure easy access to your electrical panel and thermostat, and secure pets for safety. It’s also helpful to move furniture or valuables that may be in the technician’s work path.

  • Can I upgrade to a smart thermostat with my new AC?

    Yes, you can upgrade to a smart thermostat with your new AC system. Most modern units are compatible and a professional can ensure proper installation and setup for maximum efficiency and control.