Replacing an AC unit typically takes one to two days, depending on the complexity of the installation. Straightforward replacements with existing ductwork in good condition can often be completed in a single day. However, upgrades to different systems, ductwork modifications, or additional components like air purifiers may extend the installation to two days. At AC On Time, we prioritize efficiency without sacrificing quality. Before starting, we provide a clear timeline so you can plan accordingly. Our installation teams arrive promptly with all necessary equipment to minimize disruption. We protect your home with drop cloths and booties and clean up thoroughly after the job. We also perform a final system calibration to ensure optimal performance from day one. Our technicians also explain how to operate your new system and answer any questions.

Several indicators suggest it’s time to replace your AC unit. If your system is over 10-15 years old, it’s nearing the end of its lifespan. Frequent breakdowns requiring costly repairs, especially if they total more than 50% of a new unit’s cost, make replacement more economical. Rising energy bills despite consistent usage often indicate your system is losing efficiency. Uneven cooling, strange noises, odors, or excessive humidity are additional warning signs. At AC On Time, we offer system evaluations to help you decide. We only recommend replacement if repairs aren’t viable. When replacement is necessary, we explain the benefits, including improved comfort, reliability, and energy savings. If your system uses older R-22 refrigerant, this can also make replacement a smarter choice. Many customers are surprised by how much more comfortable their homes feel with a properly sized, modern system.

Determining the correct size AC unit requires a professional load calculation rather than simply matching square footage or replacing the same size as your previous unit. At AC On Time, we conduct a Manual J load calculation that considers factors like insulation levels, window efficiency, ceiling heights, local climate, and your home’s orientation to the sun. The number of occupants and usage patterns also factor into our calculations. Improperly sized units—whether too large or too small—can cause problems. Oversized units cycle on and off frequently, failing to dehumidify your home, while undersized units struggle to maintain comfortable temperatures and consume excessive energy. Our certified technicians ensure precise sizing for optimal comfort, efficiency, and system longevity. Our technicians will walk you through these findings during our free in-home consultation. During our consultation, we explain our recommendations and how we determine the appropriate size for your home.

Replacing an old AC unit with a modern, energy-efficient system can yield significant savings on utility bills. Many customers report energy savings of 20-40% after upgrading to a high-SEER model. For a typical Houston home, this can translate to hundreds of dollars annually. Savings depend on factors like the efficiency of your new system, the condition of your old unit, insulation quality, and cooling habits. Modern units with SEER ratings of 16 or higher provide better efficiency than older models with SEER ratings of 10 or less. Beyond energy savings, a new system reduces the need for frequent repairs, which can add up quickly. At AC On Time, we help calculate your potential return on investment and inform you about tax credits, rebates, and incentives that can offset the initial cost. These savings, combined with improved comfort, make replacement an attractive long-term financial decision. Many homeowners find their new system pays for itself through lower bills and continues to save money over its lifespan.

Choosing the right SEER (Seasonal Energy Efficiency Ratio) rating involves balancing upfront costs with long-term savings. In Houston’s hot climate, we recommend systems with a minimum SEER rating of 16, though many customers opt for higher efficiency units in the 18-20 SEER range. Higher SEER ratings offer greater efficiency but come with higher initial costs. Factors like how long you plan to stay in your home, cooling needs, and budget priorities influence the decision. For homeowners staying 5+ years, investing in a higher SEER system often makes financial sense. Federal standards require at least 14 SEER in our region, but we recommend exceeding this baseline for better performance in our climate. At AC On Time, we provide a cost-benefit analysis showing projected savings for different SEER options based on your usage patterns. These advanced systems also provide superior humidity control, a key benefit in our climate. We help you understand the payback period for various efficiency levels to make an informed decision.

The "best" AC unit depends on your specific needs, budget, and priorities. At AC On Time, we offer high-quality brands like Carrier, Trane, Lennox, and Rheem, all proven to perform well in Houston’s climate. Each manufacturer has strengths—some excel in cutting-edge technology, while others provide exceptional value. Installation quality often matters more than the brand itself; even premium brands underperform if improperly installed. Our technicians are factory-trained on all the brands we carry, ensuring expert installation. We consider factors like budget, efficiency goals, desired features, and warranty preferences when recommending brands. Our extensive field experience gives us insight into which brands perform best locally over time. During your consultation, we discuss the pros and cons of different manufacturers. At AC On Time, we focus on proper sizing, professional installation, and ongoing support, ensuring your system performs optimally regardless of brand. We back every system we install with a workmanship guarantee for peace of mind.

A new, professionally installed AC unit can usually be expected to last 12-15 years with proper maintenance. Regular maintenance is critical to extending lifespan—systems receiving annual tune-ups often outlast neglected ones by 3-5 years. Quality installation also impacts longevity, with proper refrigerant charging, airflow settings, and sizing contributing to durability. Environmental factors like Houston’s hot climate and usage patterns also influence wear and tear. At AC On Time, we help extend your system’s life through comprehensive installation practices and preventative maintenance plans. We provide guidance on thermostat settings and filter replacement schedules to maximize your system’s lifespan. Our goal is to ensure you get the maximum possible value from your new system. When you invest in a new AC unit with us, we’re committed to helping you protect that investment throughout its life.

Yes, installing a new AC unit typically increases your home’s value, especially in Houston’s hot climate where reliable air conditioning is essential. Updated HVAC systems are significant selling points that make your property more attractive to buyers. A new, energy-efficient system can increase your home’s value by 5-10% of the system’s cost, depending on market conditions and installation quality. Beyond direct value, a new system addresses buyer concerns about aging equipment. Energy-efficient models are particularly appealing as utility costs and environmental considerations grow in importance. At AC On Time, we provide documentation of your system’s specifications, warranty, and maintenance history to demonstrate its value. This documented upgrade can be a powerful negotiation tool when you decide to sell. If you plan to sell your home, we help you select a system that offers the best combination of features and value to appeal to buyers while meeting your comfort needs.

DIY AC installation is not recommended. Professional installation requires specialized knowledge, tools, and certifications. HVAC technicians must be EPA-certified to handle refrigerants legally, and improper handling can result in fines. Installation involves precise refrigerant charging, electrical connections, and airflow balancing, all of which impact performance and efficiency. Errors can lead to reduced efficiency, premature failure, or safety hazards. At AC On Time, our technicians ensure installations meet manufacturer specifications and local codes. Professional installation includes proper sizing, permits, and thorough testing for optimal performance. We also handle old system removal responsibly. Attempting this work yourself can also create serious safety hazards for you and your family. While professional installation adds to the cost, it pays for itself through improved efficiency, longevity, and avoiding costly repairs. Manufacturer warranties typically require professional installation to remain valid.