
Regular maintenance is key to keeping your AC unit running efficiently and effectively. A clogged air filter can cause a 20% decrease in airflow, making your AC work harder and increasing energy bills.
Dirty condenser coils can reduce AC efficiency by up to 30%. It's essential to clean them every 3-6 months to ensure optimal performance.
A well-maintained AC unit can last up to 15 years, but neglecting maintenance can shorten its lifespan by 5-7 years.
Here's an interesting read: How to Maintenance Ac Unit
Troubleshooting and Repair
A dirty evaporator is a common problem. If your central a/c unit isn't working properly, look for the problem you're experiencing on a chart and see if it's a do-it-yourself job.
If your AC unit doesn't cool, check the thermostat first. The system should be switched to the cool setting, and the fan should be on auto. If the thermostat is blank, it may just need new batteries.
Checking your air conditioning breakers is also a good idea. They could be tripped, so reset them if necessary.
A dirty condenser coil and fins can cause the condenser unit to turn on and off repeatedly. Cleaning the condenser coil and fins can solve this problem.
If you've cleaned everything you can and you're still not getting cool air, the problem could be the refrigerant. In this case, it's best to call a professional.
Here's a list of common problems and their possible causes:
- Condenser unit doesn't run: No power, thermostat set too high, motor faulty, or compressor faulty.
- Uneven cooling: Distribution system out of balance.
- Inadequate cooling: Thermostat set too high, evaporator dirty, or unit too small.
- Unit doesn't cool: Thermostat set too high, condenser dirty, condenser unit blocked, evaporator dirty, or compressor faulty.
Cleaning and Maintenance
Regular cleaning and maintenance of your AC unit can save you from costly repairs and ensure it runs efficiently. Cleaning the evaporator, which is usually located above the furnace, is a crucial task that should be done once a year.
To clean the evaporator, you'll need to remove the foil-wrapped insulation at the front of the plenum, which is held in place by tape. You'll also need a screwdriver to remove the screws that hold the access plate in place. Behind the insulation, you'll find the access plate, which you can lift off to clean the evaporator.
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You should also check the outdoor condenser unit, which is prone to accumulate dirt and debris from trees, lawn mowing, and airborne dust. The condenser has a fan that moves air across the condenser coil, so you'll need to clean the coil on the intake side. Use a commercial coil cleaner and follow the instructions on the label. You may also need to clean the fins with a soft brush to remove accumulated dirt.
Here's a quick checklist to help you remember what to do:
- Clean the evaporator once a year
- Remove foil-wrapped insulation to access the evaporator
- Check the outdoor condenser unit for dirt and debris
- Clean the condenser coil with a commercial cleaner
- Clean the fins with a soft brush
By following these simple tasks, you can help extend the life of your AC unit and keep it running efficiently.
Check Indoor Filters
Dirty indoor air filters can suffocate your AC unit, forcing it to work harder. This is especially true if you haven't changed your filters in over a month.
If your air filters are dirty, clean them ASAP. You can also change the filter if needed, and take note if your air conditioner continues to struggle.
Cleaning the Condenser
Cleaning the condenser is a crucial part of maintaining your air conditioning system. It's usually located outside the house and can accumulate dirt and debris from trees, lawn mowing, and airborne dust.
The condenser has a fan that moves air across the condenser coil. You'll want to clean the coil on the intake side, so check to see which direction the air moves across the coils before turning off the power to the air conditioner.
You'll need a few tools to clean the condenser, including a commercial coil cleaner, a soft brush, and a carpenter's level. The coil cleaner is available at refrigerator supply stores and comes with instructions for use.
To clean the fins, use a soft brush to remove accumulated dirt. You may need to remove the protective grille to reach them, so be careful not to damage the fins. They're made of light-gauge aluminum and can be easily damaged.
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Here's a step-by-step guide to cleaning the condenser:
- Clean the condenser coil with a commercial coil cleaner, available at refrigerator supply stores.
- Clean the fins with a soft brush, being careful not to damage them.
- Check the concrete pad on which the condenser rests to make sure it's level, using a carpenter's level to do so.
If the pad has settled, you'll need to lift it with a pry bar or piece of 2 x 4 and add gravel or rocks under the concrete to level it.
Cleaning the Evaporator
Cleaning the evaporator is a crucial step in maintaining your central air system. It's usually located directly above the furnace in the plenum, and you should clean it once a year if it's accessible.
You'll need to remove the foil-wrapped insulation at the front of the plenum, which is probably taped in place. Remove the tape carefully, as you'll need to replace it later.
Behind the insulation is the access plate, held in place by several screws. Remove the screws and lift off the plate to access the evaporator.
Before you start, make sure you have the right tools on hand. You'll need to have these tools with you to clean the evaporator:
If the plenum has foil-wrapped insulation, you can clean the evaporator. However, if it's a sealed sheet metal box, do not attempt to open it.
Refrigerant and Repair Requirements
If your air conditioning system doesn't contain the proper amount of Freon, little or no cooling will take place. Freon is a refrigerant commonly used in most air conditioning systems.
If you suspect a Freon problem, call a professional service person to recharge the system. Don't try to charge your system's refrigerant lines yourself.
Damaged or worn insulation on the coolant lines can cut down on the cooling efficiency of the unit. This insulation is usually found on the lines running from the condenser outside the evaporator inside the house.
Replace damaged or worn insulation with new insulation of the same type as soon as possible. Follow the manufacturer's instructions for installation.
Some common signs that your home AC needs repair include strange noises, bad odor from your vents, high humidity levels, frequent cycling on and off, and a major jump in energy bills.
Consider reading: Side by Side Refrigerator Not Cooling but Freezer Is Fine
24/7 Emergency Service – Central Florida
In Central Florida, the heat can be unbearable, especially during the summer months. Emergency AC repair services are essential to keep you cool and comfortable.
Cool Today offers comprehensive emergency AC repair services to get your system back to working properly as quickly as possible. Their team is available to provide same-day emergency AC repair in Orlando, FL, and the surrounding areas.
There's nothing worse than dealing with a faulty air conditioner in the middle of a hot, humid Florida summer. ServiceOne Air Conditioning & Plumbing provides same-day emergency AC repair in Orlando, FL, and the surrounding areas to keep you cool and comfortable all summer long.
Same Day service technicians in San Diego are available to repair your AC unit 24/7, with a focus on education and not upselling unnecessary parts or labor. They prioritize arriving on-time, even at 3 in the morning.
You can count on the skilled technicians at ServiceOne Air Conditioning & Plumbing for air conditioning repair in Orlando. They approach every call with professionalism and care, understanding how crucial a functioning AC system is for your home.
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What You Pay Will Depend On
The cost of AC unit repair can be a bit tricky to predict. Air conditioner repair depends on a variety of factors, including but not limited to the make and model.
The driving factors of the repair are the parts that need to be repaired or replaced. Some repairs require low-cost parts and simple repairs, others can be costly especially if the warranty has expired.
Better-quality contractors will cost more, but they'll also save you money in the long run because they won't cut corners. Unless you really enjoy seeing the contractor on a regular basis, you may want to spend just a little more for quality service.
If the equipment is still under warranty, you could end up paying a lot less for your repair. To verify whether your warranty is still active, you can contact the company that installed it.
Here's a breakdown of the factors that affect the cost of AC unit repair:
- Parts that need to be repaired or replaced
- Quality of the contractor
- Whether the equipment is still under warranty
Common Issues and Problems
One of the most common issues with air conditioning units is refrigerant leaks and low refrigerant levels. This can cause the unit to work less efficiently and increase energy bills.
A dirty air filter can also cause problems with air flow and reduce the effectiveness of the unit. Replacing the filter regularly is an easy fix.
Faulty thermostats, compressor and condenser unit issues, and wiring and electrical problems are other common issues that can arise. These problems often require professional attention to fix.
Some signs that your AC unit needs repair include a sudden spike in energy bills, water pooling near the unit, and strange smells coming from the vents. These can be indicative of a more serious issue.
Here are some common signs that your AC unit needs repair:
- Spike in utility bill
- Water pooling near unit
- Strange smells
- Blowing warm air
- Lack of airflow
- Unusual sounds
These signs can indicate a range of problems, from dirty air filters to refrigerant leaks. If you notice any of these signs, it's best to call in a professional to diagnose and repair the issue.
A dirty evaporator coil is a common problem that can be easily fixed by cleaning it. However, if the issue persists, it may be a sign of a more serious problem, such as low refrigerant levels or a faulty compressor.
Regional Information and Guides
San Diego's mild weather is no excuse for a broken AC unit. Even in the city's pleasant climate, air conditioners are still a crucial part of every residence.
In San Diego, a broken AC unit can make for a long day. Same Day's guide highlights the importance of being prepared for such situations.
If you're in San Diego and your AC unit breaks, Same Day's guide is a valuable resource to have.
San Diego's Most Efficient
San Diego boasts some of the most efficient public transportation systems in the country, with the San Diego Trolley being a prime example, carrying over 12 million passengers annually.
One of the city's most efficient ways to get around is by bike, with over 80 miles of bike-friendly paths and lanes.
The city's grid-like street pattern makes it easy to navigate by car, with most major roads running north-south or east-west.
San Diego's compact downtown area is also very pedestrian-friendly, with many shops and restaurants within walking distance of each other.
The city's efficient water management system has reduced water usage by over 20% in recent years.
The San Diego International Airport is a model of efficiency, with a unique people-mover system that gets passengers to their gates quickly and easily.
Download San Diego Guide

You can download San Diego's Ultimate Guide to AC Repair, which Same Day recommends scheduling a call for immediately, as you could be losing money on your energy bills and living with poor air quality for the entire summer month.
In San Diego's mild weather, air conditioners are a must-have, and a broken unit on the wrong day can make for a long one.
Losing money on energy bills and living with poor air quality for an entire summer month can be stressful, and Same Day's guide can help you understand what to do.
A broken air conditioner can also risk the total lifespan of your system, with a worst-case scenario being a major system failure.
Same Day's guide is designed to help you understand the basics and take action to fix your AC unit quickly and efficiently.
Orlando's Impact
Orlando's subtropical climate poses unique challenges for HVAC systems due to high humidity and temperatures. AC units here must work harder to effectively dehumidify and cool homes.

Regular maintenance is crucial to ensure your unit runs efficiently in this challenging climate. By investing in proactive maintenance, you can prevent unexpected breakdowns and extend equipment life.
An oversized AC unit can lead to clammy indoor conditions because it cools quickly but doesn't dehumidify effectively. On the other hand, an undersized unit can struggle to keep your home cool and comfortable, resulting in constant running and increased energy bills.
Consulting with a knowledgeable HVAC provider is essential to ensure your system is the correct size for your living space. This will optimize comfort and energy efficiency in your home.
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Frequently Asked Questions
What is the $5000 AC rule?
The $5,000 AC rule is a guideline that helps homeowners decide between repairing or replacing their air conditioning unit based on its age and estimated repair cost. If the result of multiplying these two numbers exceeds $5,000, replacement is likely the more cost-effective option.
How much does it cost to fix a whole AC unit?
Repairing a whole AC unit can cost between $100 and $1,000, depending on the specific issue. Learn more about common AC repair costs and what factors affect the price
Who to call when your AC is not working?
For reliable AC repairs, call a local HVAC professional to diagnose and fix the issue. They have the expertise to tackle complex problems and ensure your air conditioning system is working efficiently.
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