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One Hour Heating & Air Conditioning® of O'Fallon

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Air Conditioner Replacement & Installation

Stay Cool with Quick and Reliable AC Installation Services

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. 

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. 

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. 

We also install ductless mini-split heat pumps for homeowners who do not wish to have ductwork installed. 

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 That 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 our 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! 

Here for You

When You Need Us Most!

Round the Clock Availability 100% Satisfaction Guarantee StraightForward Pricing® Guide Always On Time…Or You Don’t Pay A Dime!®
No matter the hour, you can trust One Hour to help you when you get hit with the unexpected. We guarantee our materials, labor, and craftsmanship for up to two years from your service date. Before we start any work, we discuss your options, so you know exactly what you are getting and how much it will cost. No hidden fees! We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Learn More About Us

We're Local

Your Neighborhood AC Replacement and Installation Experts

With hundreds of locations across the country, every locally owned One Hour Heating & Air Conditioning shares incredibly high standards for training and expertise. More than anything, we take pride in being your trusted resource for all things HVAC, including answering all your questions thoroughly.  

Should I replace or repair my air conditioner?

Age can be a good indicator, as most ACs have a lifespan of 10-20 years. If your HVAC system is a decade old or more and isn’t working as efficiently, a qualified professional can assess your unit and help you make an informed decision.

How much does air conditioner replacement cost?

Air conditioning replacement costs vary based on the price of the replacement unit, additional materials required for installation (ductwork, wiring, etc.), and the labor needed to complete the job. With our StraightForward Pricing® Guarantee, you’ll know the cost in advance. Your technician will provide a complete estimate for any air conditioner or heat pump installation or replacement service, so there are no surprises. 

Find Air Conditioning Installation Service Near Me

Summers are hot, and spring and fall can have some scorchers, too. The good news is that your local One Hour Heating & Air Conditioning is committed to bringing you reliable, punctual heat pump and air conditioning replacement services. Call us. You’ll get professional installation backed by national guarantees and a cool, comfortable home. 

Air Conditioning
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Here For You

When You Need Us Most!

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  • 'Round the Clock Availability

    No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.

  • 100% Satisfaction Guarantee

    We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.

  • StraightForward Pricing® Guide

    Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!

  • Always On Time…Or You Don’t Pay A Dime!®

    We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Learn More About Us
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We're Local

Air Conditioning & Heating Experts Near You!

Bad Smells

Bad smells emitting from your air conditioner tell us that there’s moisture nearby and microbes present, which is the perfect environment for mold and bacteria to thrive. If your air conditioner releases a terrible odor, our HVAC installation specialists are ready to detect and resolve the issue as quickly as possible.

Unusual Noises

An AC that makes unusual noises like clanking, banging, clicking, or buzzing may be doing so for a variety of reasons, all of which don’t point to anything good. Our air conditioning install specialists will assess and address the reason for these sounds and recommend the best course of action.

Higher Energy Bills

High energy bills alone don’t necessarily mean something is wrong with your air conditioner. Nevertheless, a significant increase in energy costs could indicate that your AC is straining to compensate for temperature changes and needs to be replaced. Our technicians are standing by to evaluate your air conditioner and discover the issue.

Recurring Issues

An air conditioner that requires constant repairs may be draining your wallet and your patience. Remember, if the cost of repairs exceeds the cost of a complete replacement, you should have a new air conditioner installed, and we can help!

Call (636) 203-7027 for more information about our exceptional and affordable air conditioner replacement services today. 

Should I Replace or Repair My Air Conditioner?

Wear and tear over time can cause your air conditioner to start operating insufficiently. Age can be a good indicator of whether or not to simply repair or entirely replace an air conditioner, as most ACs have a lifespan of up to 15 years. If your HVAC system is a decade old or more and isn’t working as efficiently as before, a qualified professional can assess your unit and help you make an informed decision.

We recommend replacing your air conditioner every 10 to 15 years to ensure energy efficiency and proper operation.

How Long Do HVAC Units Last?

Depending on the brand, a typical HVAC unit can continue to operate for up to 15 years when it’s taken care of correctly. Routine annual maintenance is key to the sustained operation of your heating and cooling system. To prolong the proper function of your HVAC system, let our technicians evaluate your unit and keep it working long-term.

How Much Does Air Conditioner Installation Cost?

The cost of air conditioning installation can vary greatly because some AC systems are more labor-intensive and require more time to complete. For instance, a central air conditioning system requires ductwork for evenly distributed airflow. Additionally, other HVAC companies calculate labor differently and may even throw in some hidden fees for good measure. Our team at One Hour will discuss all the fees associated with your air conditioner installation or replacement service, so there are no surprises. We always offer upfront and honest pricing on your superior quality air conditioner service.

Air Conditioning Installation Services For Different Kinds of Units

AC installation sounds pretty straightforward until you consider all of the different types of units available. We’re experienced in installing a wide range of AC equipment to keep your loved ones safe and comfortable at your property.

Central Air Conditioner Installation

Central AC is the most common type of air conditioning system in the United States. This type of system can take a few different forms.

  • Furnace + AC
  • Furnace + Heat Pump
  • Air Handler + Heat Pump

Central air conditioning requires ductwork. For older homes without ductwork, the other options listed here will likely be cheaper and require less renovation.

Ductless Split System Installation

A ductless split system requires zero ducts (hence the name “ductless”) to operate. Your units can be mounted on the walls or flush into the ceiling, depending on the design, and you’ll get a wall-mounted thermostat so you can control multiple units at once. We’re ready to help you get the cool air circulation to keep your space comfortable for every guest.

Swamp Coolers

A swamp cooler is a type of air conditioner that takes moisture and turns it into cool air. Sometimes these units are called evaporative air conditioners because they pull warm outside air through evaporative cooler pads that cool the air and circulate it around your space. Our licensed technicians can recommend some of the best swamp cooler brands on the market today.

Window Unit Installation

Everyone is familiar with window air conditioner units, having either seen one or lived with one. We recommend window unit installation for smaller homes and commercial properties to maximize space, improve energy efficiency, and save on energy costs. We can discuss your options when you contact us today.

Wall Unit Installation

Wall AC units are similar to ductless split systems in that they don’t require ductwork to operate. However, wall units don’t have a separate thermostat that controls the AC system. Each unit is controlled manually and is an ideal option for room additions. Wall unit installation is inexpensive for property owners interested in a high-quality air conditioner for a fraction of central AC installation cost.

Call us today at (636) 203-7027 for help with all your air conditioner installation needs. We’re standing by 24/7.

Experts You Can Trust for AC Replacement

Our HVAC company is the preferred provider for air conditioning installation as our experts have years of experience and training. We’ve evaluated, replaced, and repaired many of the top-rated AC brands on the market, making us the nation’s go-to air conditioning install specialists. We’re ready at a moment’s notice to perform emergency and same-day AC and heating repairs, maintenance, and installations when you need them most.

You can trust our technicians because:

  • We are highly trained and reliable AC technicians – Before our comfort specialists have the privilege of working with you, they are thoroughly vetted and background checked to ensure trustworthiness. They also have to attend extensive company training to understand how to deliver our high standards and complete satisfaction promise. You can rest assured that our seasoned technicians will walk you through the repair or replacement process and keep you in the loop the entire time.
  • We offer emergency and same-day AC installation service – Emergencies don’t have a timetable, nor are they reserved for just business hours. When you have an HVAC issue that needs immediate attention, our professionals are available around the clock to answer the call. We’re also ready to tackle same-day services, so you don’t have to wait multiple days for an energy-efficient AC.
  • We guarantee your satisfaction – Many HVAC companies shy away from making promises or guarantees because there’s a chance they won’t be able to follow through. However, One Hour makes various guarantees, so you know we’re committed to a customer-focused experience and service results that leave you satisfied with our workmanship. You can also count on our team to honor an Always On Time... Or You Don’t Pay A Dime!® guarantee.

Can You Install an AC Unit Yourself?

We don’t recommend DIY air conditioning replacement as these systems are incredibly complex. You may be costing yourself more money in the long run by installing an AC yourself and realizing a mistake was made during the HVAC installation process. Our team can save you money and complete an air conditioning install quickly, so all you have to do is sit back and relax while we take care of everything.

We’re HVAC Professionals Providing Various Home Air Conditioning Services

AC installation isn’t the only air conditioning service we offer you—our valued customer—to keep your property’s temperature comfortable. We’re experienced HVAC professionals trained in repair and maintenance best practices for HVAC units.

Home AC Repair

A broken air conditioner can completely disrupt your day and create an uncomfortable environment inside your home or office. You don’t have to suffer through a humid summer with an AC that works insufficiently. Our certified comfort specialists can repair almost any issue your air conditioning system is experiencing, helping make your home feel like home again. Schedule your appointment today!

Home AC Maintenance

Air conditioner upkeep is vital to consistent operation. Your AC can last up to 15 years with routine maintenance from One Hour. We use state-of-the-art equipment and proven techniques to tune up and adjust your air conditioner for further efficiency and savings.

Our AC Replacement Team is Ready to Solve Your Air Conditioning Problems Immediately!

One Hour Heating & Air Conditioning is ready to support you with affordable and detailed AC and heating repair, maintenance, and installation services. Allow our AC and heating company to assist you with same-day service and emergency solutions to get your air conditioner back up and running in no time.

*Check with your local franchise; services and costs may vary by location.

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