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Air Conditioning Tips & Advice

Air Conditioning Tips & Advice (5)

Tuesday, 07 May 2019 14:36

The 4 Most Common Air Conditioner Problems

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The 4 Most Common Central Air Conditioner Problems

Annual Maintenance is the Key To Staying Cool

Crestwood air conditioner maintenance

With the hot, humid weather right around the corner in the Crestwood area, now is a good time to have your central air conditioner maintained. Most of the air conditioner problems we see every day are the result of lack of maintenance and not having the AC unit regularly inspected.

1. AC Refrigerant Leaks

A central air conditioner should not lose coolant during normal operation. There are a couple of reasons an air conditioner may be low on refrigerant – either it was not sufficiently charged when it was installed, or it has developed a leak. Your HVAC technician will look for leaks in the system and refill the unit with refrigerant if needed. The amount of refrigerant added to the unit must match the manufacturer's recommended amount to ensure optimal cooling performance. If a leak is found it's best to find the cause of the leak and make repairs before adding more refrigerant.

2. Clogged Furnace Air Filters

An air filter should be replaced monthly, or as recommended by the filter manufacturer. When filters become dirty and clogged the AC unit must work harder, and parts such as the compressor or fans are likely to wear out prematurely.

3. Dirty AC Coils

Evan a small amount of dirt accumulating on coils can significantly reduce the cooling performance of your air conditioner. AC coils should be cleaned to prevent the accumulation of dirt and debris. Before performing any maintenance always be sure to shut off the power supply to the unit.  Gently vacuum the fins and coil to avoid bending the metal. Never use a power washer to clean an air conditioner. Keep the area around the air conditioner free of tree branches and bushes to keep debris from falling on the unit.

4. Air Conditioner Electrical Component Failure

Compressor and fan controls will wear out over time, especially when the air conditioner turns on and off frequently. If your noticing that the AC is cycling on and off more frequently, or is running much longer than usual, give us a call to inspect the unit. Corrosion of wires and terminals is another common problem in many systems, so the electrical connections and contacts should be inspected annually during AC system maintenance.

By regularly maintaining your air conditioner you can keep your air conditioner running as efficiently as possible, while also saving money on unexpected breakdowns and repairs.
Tuesday, 09 April 2019 00:11

Central Air Conditioner Noises

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Central air conditioners have a lot of moving parts working to keep your home cool and comfortable. Over time, the parts will wear out and lead to a variety of sounds you may not have heard before. Some of these sounds can be easy to identify and fix, like a loose panel cover, or could be a sign of a bigger problem like a worn out condenser motor.

Air Conditioner Noises

Air Conditioner Rattling Sounds

Rattling sounds are a fairly common with air conditioners. Over time the various fasteners attaching components to the unit can become loose. If you hear a rattling sound, check the screws or bolts on the cover plates. If the rattling noises is still heard after tightening the panels, remove the cover and check inside the unit for the loose panels. After listening for rattles, always turn the power to the unit off at the breaker.

Central AC Whistling Sounds

Whistling sounds are usually a result of faulty seals. Check for cracks and gaps in the seams of ducts near the AC unit and in the duct work that carries the air throughout the home. Examine the seams around these areas for loose connections and re-tighten any loose screws or bolts. If tape was used to cover the seals, make sure the tape is  adhering well to the duct seams.

Screeching Sounds

Like a car, an air conditioner motor uses belts to turn a fan. Over time the belt can stretch and wear out. If there is periodic screeching that only occurs when the unit turns on to blow air or cool the air down, it is likely a worn-out belt that needs to be replaced. A qualified HVAC technician should check the belt and replace it if needed.

Clunking Sounds

Clunking sounds can mean a part has come loose inside the AC unit. A loose fan blade on a motor will often make sounds as it turns. It may also be that a plastic component or cover plate is coming into contact with the fan. A qualified HVAC technician should inspect the unit to ensure it is operating safely.
Wednesday, 30 May 2018 15:59

4 Reasons To Replace Your Old Air Conditioner

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4 Reasons To Replace Your Old Air Conditioner

4 Reasons To Replace Your Old Air Conditioner

Is your central air conditioner getting on in years? If the unit is more than 10-15 years old and you are considering replacing it with a newer model, you can expect to enjoy many improvements, including: 
  1. Quieter Operation - By optimizing the shape of fan blades and redesigning how compressors work, manufacturers have been able to made air conditioners operation much quieter. 
  2. Environmentally Friendly Refrigerants - Unlike the Freon® coolant used over a decade ago that caused damage to the earth's ozone layer, newer R410A are environmentally friendly and also perform better. 
  3. Reduced Energy Consumption - Years ago it was not uncommon for a central air conditioner to consume 6,000 watts of electricity each hour to cool a typical home. Today, that energy consumption has been reduced to around 1,700 watts an hour, a result of new technologies such as variable speed fans and scroll compressors. 
  4. Increased Comfort - In the past central heating and cooling systems had two fan settings – on and off – not the most efficient and comfortable way to heat and cool a home. Today, variable speed fans allow air conditioners to deliver conditioned air far more precisely. The result is less energy use, lower noise and greater comfort.
Ready to replace your old, inefficient air conditioner?  Call MR Plumbing, Heating, Air Conditioning and Electrical. 

Identifying Air Conditioner Problems Before They Become Major Repairs

Your home's central air conditioner is a power-hungry and complex machine that can fail at any time without warning. However, there are a few simple ways you can identify air conditioner problems that could tip you off to a potential problems before the unit fails completely.   

Air Conditioner Maintenance

Some of the early warning signs of potential air conditioner problems are:

Excessive Noise

One of the most common complaints we hear is that the air conditioner is making a wailing noise. Left unchecked, the minor annoyance can quickly grow deafening when the unit is operating at full capacity. Loud noises such as these are generally caused by a fan belt becoming dislodged over time. Your technician will check the bearings in the motor, as they may require lubrication or replacement.

Frozen AC Coils

Another issue that often arises is frozen coils. Frozen coils and ice can impede the operation of the unit, creating blockage in the circulation of Freon and air. Heat pumps often contain heating elements to reduce this problem, but sometimes the unit doesn’t cycle quickly enough. Recalibrating the unit can eliminate this problem.


An air conditioner that is leaking water inside your home can cause significant water damage as well as mold and mildew. If your AC unit no longer drains away condensation effectively, it could be the result of a rusted out condensation pan or blockage in the drain itself. Check the pan and drain lines for signs of leaks.

Clogged Ventilation Grills

One of the most common causes of air conditioner failure is blocked grills. Annual maintenance to clean the unit's fins, fan, motor and other parts of dirt and debris will allow the unit to operate at peak efficiency during the hottest weather.

Other AC Problems

If the air conditioner simply isn’t cooling, more advanced diagnostic tools may need to be applied. Is the fan or compressor running without the other? Does the unit work only part of the time? Does it over cool or not cool enough? Questions such as these can help you give your technician a head start in quickly zeroing in on the source of the problem, so be sure to take a second to observe operation before you turn of power to the unit and call for service.

Generally most problems can be identified from the details above. If, for instance, the unit shuts off before the room is a comfortable temperature, it may not be cycling enough air through the thermostat to take a measurement. This could be due to poor calibration or a blocked sensor.

A Freon leak can render the machine weak or ineffective, especially if recharging the gas supply doesn’t solve the problem. The thermostat could be broken as well, which usually means it has to be replaced.

Finally, the A/C unit may be short-circuited to the ground, causing circuit breakers to fail every time the machine turns on. Be sure to provide a description of the problem to your technician to help him solve your problem as quickly as possible.

Central Air Conditioner

With the hot, sticky weather just around the corner many homeowners with older air conditioners are weighing the benefits of buying a new air conditioner versus repair their existing unit. The old saying "if it isn't broken, don't fix it." isn't always so clear cut when it comes to central cooling systems. While that old ac unit may be running just fine, it may be using a lot more energy than new units. The reason is many new air conditioners are variable speed, meaning that instead of just cycling on and off, they can operate at low or high speed depending on demand.

The EPA suggest that homeowners replace their older air conditioner if it's past 10 years old. The reason is new air conditioners are far more efficient that system available a decade ago. How much can you expect to save on your energy bill? With a newer, high efficiency system you could save up to 56% on your cooling costs.
Ultimately, for most homeowners the decision to replace their air conditioner happens when the unit breaks down during a heat wave. By planning ahead and making the decision to install a new air conditioner before the old unit is beyond repair you can avoid the inconvenience and expense of an unexpected repairs while enjoy the cost savings of today's high efficiency air conditioners.
Have questions about air conditioners? Call MR Plumbing, we're here to help.


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