Posted by & filed under HVAC .

Your central air conditioner can make a variety of noises. While some sounds are normal, others can turn out to be symptoms of an emerging malfunction. Unfortunately, ignoring an unfamiliar noise can lead to a serious and expensive repair. To help you better understand the sounds coming from your air conditioner, we’ve listed 3 noises that can point to a problem with your unit.

Rattling

A rattling noise usually indicates a component in your air conditioner has come loose. The problem usually lies with either the blower assembly or the motor. Unfortunately, allowing the noise to continue without having it inspected can lead to costly repairs.

Squealing

When your air conditioner is making a high-pitched squealing sound, the issue most likely stems from either the belt connecting the blower to the motor or the bearings on the condenser fan’s motor. Older air conditioners operate with a belt while the newer units do not. If your A/C is on the older side, and you hear the sound both inside and outside of your home, you are probably dealing with a slipped belt. Replacing the belt should rid your unit of any high-pitched squealing.

Newer air conditioners employ direct-drive motors without belts, meaning the squealing noise is likely coming from the bearings on the condenser fan’s motor. If the sound only comes from your outdoor unit, the motor may need replacing. In order to diagnose and repair the unpleasant noise, call M&M Mechanical, Inc. in Lorton VA today.

Buzzing

A noticeable buzzing noise coming from your air conditioner signals a possible electrical issue. While pinpointing the malfunction requires a professional, the three most likely culprits are the contactor relay switch, the condenser fan motor, or loose wiring. If your unit is making a buzzing, we highly suggest you call a HVAC professional immediately.

Although your air conditioner makes a variety of noises during operation, there are certain sounds that should not be considered normal. If you hear a rattling, squealing, or buzzing noise coming from your unit, turn the system off and contact a professional to inspect and diagnose the malfunction before it becomes a major issue.

Posted by & filed under Air Conditioning .

There’s nothing worse during the hottest days of summer than feeling good about having the equipment you need — your AC unit — and then having it fail you when you need it most! But your AC unit is not going to perform reliably for you unless you maintain it, and that means that besides changing filters as needed, it’s also a good idea to schedule an annual tune-up to make sure it’s in top shape for the challenging heat that’s rapidly approaching. And the time to do that is now!

What’s Involved in an AC Tune-up?

Your HVAC professional will do several things during his tune-up visit, and the first will be to do a thorough inspection of the unit. That includes checking:

  • coils (indoor and outdoor)
  • capacitors
  • compressor
  • electrical systems check for loose connections, damaged wiring or terminals
  • refrigerant level

Your heating and cooling system consists of more than 50% of your home’s overall energy costs, so a tune-up is good not only for the system and how efficiently it cools, but also for your wallet!

What You Can Do Yourself

Keep your tuned up AC unit running efficiently all summer long by inspecting the air filter monthly and changing it when dust builds up. A dirty air filter restricts air flow and allows dust to build up on essential components. It also negatively affects your indoor air quality.

It’s also essential to make sure registers inside your house are free of obstructions and dust to ensure proper airflow and maximum comfort during those oppressive “dog days” of summer!

Contact M&M Mechanical to make sure your air conditioner is ready for the summer ahead!

Posted by & filed under Air Conditioning .

With longer days and temperatures that drive you outdoors to enjoy the spring-like weather, it’s time to ensure that your family stays nice and cool as the temperatures soar in the summertime. If at the end of last year’s air conditioning season you got the news that your air conditioner needed some expensive repairs, you’ve probably spent the last few months deciding between paying for repair or a new air conditioning installation. Here are some things to consider.

Age of Your Unit

Most air conditioning units operate from between 10 and 15 years. The length of time your unit operates can depend on the brand and quality of the unit. If your air conditioning unit is relatively new and should last another five to seven years, then you might consider repairs. When the unit is over 10 years old, then it’s probably best to go ahead and replace it with a new unit.

The Cost

In some cases, the cost of repairing your air conditioner can be too high. It can be up to 40 percent of a new unit. It seems obvious it’s time to replace it. However, sometimes it’s not so clear. One thing to consider is that there are other costs involved. Each year, air conditioner manufacturers create more efficient models, which means a newer model can lower your utility costs. There isn’t a hard and fast rule but take a minute to look at all the costs and savings.

More Repairs to Come

Talk to your air conditioner serviceman and ask him about the general condition of the unit. If it’s in good condition, you should consider having the unit repaired. However, the service person might have noticed other areas that may fail in the near future.

No matter which option you choose, M&M Mechanical, Inc. is ready to answer all of your questions and help you make a final decision. Call us today for more information to help you make the decision.

Posted by & filed under Air Conditioning .

Just like your car, your air conditioning system has a lot of moving parts and needs regular maintenance. You wouldn’t skip an oil change, and you should have your air conditioner serviced each spring. As the weather turns warmer and the days get longer, it’s a good time to have your HVAC system maintenanced. Here are three ways maintenance can save you money.

Lower Utility Bills

When your system is clogged with dirt and debris, your air conditioner has to work harder to keep your home cool. The harder it works means the longer it takes to reach the temperature you want, and this runs up your utility bills. Regular maintenance removes these pollutants from your system allowing your air conditioner to run for shorter periods with the same results.

Small Repairs Lead to Major Repairs

As part of your air conditioning service, the technician inspects your entire unit and looks for any issues that need repair. Taking care of a small repair now can help you avoid a major repair a little further down the road; some parts just need replacement after being in use for a while.

Extend the Life of Your Air Conditioning Unit

As one of the most expensive systems in your home, you expect your air conditioner to last more than a decade. However, many factors go into how many years you actually get out of the unit. Having a professional service your air conditioner unit each year keeps the unit clean, well maintained and small repairs fixed, which can add to the years your unit has.

Having a professional from M&M Mechanical visit your home each spring not only helps you avoid emergency calls during the hottest months, but can save you money. These savings are both immediate and long term for your wallet.

Posted by & filed under Air Conditioning, energy bills .

Over time, dust and dirt can build up in your air conditioner, lowering its performance and its efficiency and making it more expensive to cool your home. An air-conditioning tune-up can help you determine what’s going on, make sure your system has no problems, and ensure its operating at maximum efficiency.

Is it time for an Air Conditioning Tune-up?

It’s never been inspected. If you can’t remember the last time your air conditioner was inspected, then a tune-up can likely help. Dirt dust and even mold can build up in your air conditioner and in your ducts, making your air conditioner run less efficiently. Every year you run your AC without cleaning or maintenance, it gets a little less efficient. If you’ve never had it checked or can’t remember the last time you had your system checked, it’s likely time for a tune-up.

Your energy bills are too high. If your air conditioner has to work too hard to cool your home, then your energy bills are going to go up. If your bills are suddenly soaring, are much higher than usual or your air conditioner seems to be running all the time, it might be time for a tune-up. Regular maintenance can help your air conditioner run as efficiently as possible, lowering your energy costs.

The air smells bad. If the air in your home smells musty, moldy or has a sour odor, your air conditioner could be to blame. Moisture can build up in your system and be blown throughout your home along with the cool air. The resulting odor is more than annoying; the mold causing the odor could actually damage your health and is particularly dangerous for anyone with asthma or allergies.

Your home is not cool. If your air conditioner is constantly running but your home is never cool, a tune-up can help. You’re paying to run the air conditioner, even though it’s not cooling your home; by getting a tune-up you can be sure that you’re paying for something you’re actually enjoying.

If you can’t remember the last time your air conditioner was inspected or are having problems with its operation, performance or costs, we can help. Contact M&M Mechanical for help with your conditioner and to ensure your home is as comfortable as possible.