Posted by & filed under General Tips, Seasonal Tips .

It’s frustrating enough to fight the traffic every day to come home after a day on the job, only to find that your air conditioner has stopped working. A hot, toasty home wasn’t exactly what you had in mind for a relaxing night, especially when the outdoor thermometer is shooting beyond the 90˚ mark. So, just what causes your air conditioning unit to flat-out stop working? Here are 4 reasons your A/C stops working.

1. Filters need to be cleaned

This is one of the simplest situations to take care of, but one that people often forget to do. If your filters are not maintained – that is, cleaned and/or changed regularly – the air cannot flow unrestricted through the vents. Dirt, dust, and mold collect on the filter, inhibiting the effectiveness of your unit.

2. Leaky refrigerant

The air conditioning unit in your home needs refrigerant just like cars do – it’s just a different type. Refrigerant is a necessary gas in the cooling process; without it, the house won’t get cool. Sometimes, the refrigerant levels dip too low. There are two reasons for this happening: 1) the unit was not filled properly during installation, or 2) you have a leak. Refrigerant, when simply added to the unit, will likely solve the problem only temporarily. If the source of the leak isn’t discovered and fixed, it will only be a matter of time before the leak starts up again. For this reason, consult a professional, like the ones here at M&M Mechanical, to get to the root of the problem.

3. Breaker is tripped

Sometimes the air conditioner can trip your breaker and the whole thing will shut down. If you discover that, after flipping the breaker back on, it trips again, it’s definitely time to call your technician for an assessment.

4. System is frozen up

Anytime you see ice on the evaporator coil within your home, it is bound to get warm inside. The evaporator sends the hot air out to the condenser outside, but when the evaporator coil is frozen, it can’t do the job.

These are some of the common problem areas of air conditioners. If you are experiencing any air conditioning issues, give us a call at (703) 751-1011 to help you resolve your issue.

Posted by & filed under General Tips .

Whether your home improvement skills are limited to hanging the occasional shelf or you consider yourself a budding Bob Vila, there is one home improvement project that should always be left to professionals – air conditioning installation.

A professionally installed air conditioning system is generally a one-time, painless operation. Aside from annual inspections and tune-ups, a professionally installed system will give you many, many years of efficient, trouble-free installation.

Non-professional installation, however, can cause you to have a system that’s inefficient and prone to frequent breakage. In extreme causes, it can be a safety hazard, damage your home or belongings, and negatively impact the value of your home.

A professional installer has many tools at their disposal to make sure you get the best system and the best installation for your home.

A professional installer will carefully evaluate your home to make sure you have the right size air condition system. Choosing the right size system is the first step, and there is a delicate balancing act of that takes into account many variables – too small an air conditioning system, and the system will be inefficient, will struggle to cool your home, will use more electricity, and will be more prone to needing costly repairs; too large a system will cause larger up-front cost and higher electrical bills in the long term.

The installer will also have the knowledge and experience necessary to determine proper air-flow for maximum efficiency. They will be able to design and install ductwork that guarantees the most efficient air flow pattern. Improperly installed ductwork can leak or have obstructions that prevent air from the air condition system from being efficiency moved around in your home, causing your air conditioner to work harder. This can cause both inadequate cooling – and high electrical bills – as well as a shortened life-span for your air conditioning system.

Prolonged usage of an improperly installed air condition system can cost you big in wasted electricity and premature wear-and-tear on the system, which can lead to costly failures and repairs.

Having an experienced air conditioning professional, like the ones here at M&M Mechanical install your home air conditioning system can save you considerable aggravation today and both money and peace of mind later. Call us today or visit our website to schedule your free consultation.

Posted by & filed under General Tips .


Are you having troubles with your air conditioning unit, and do you think that you might need someone to perform AC repair in your home? Don’t panic if that is the case. Instead, stay calm and start looking for a reliable HVAC company to come examine your air conditioning unit.

There are several factors that you will want to consider when choosing a company to work with, and you will want to do your research beforehand to ensure that you are satisfied with the work that is done. Taking your time to find a trustworthy company will give you peace of mind knowing that your unit is in good hands whenever a problem arises.


Three Things to Look For in an AC Repair Company:

  1. Honesty. Make sure that the contractor you select will not overcharge you and is honest about the repairs that your unit requires. Hire someone who you feel is trustworthy. It doesn’t hurt to ask for references from the company and ask your friends and family if there is anyone they would recommend. Chances are, if they have had a good experience with someone, so will you.
  2. Experience. It takes skill and years of experience and training for someone to master these kinds of repairs. If you know that that a company has done this before, and that they have done it well, then you can feel good having them work to fix the problems in your home. Ask about certifications and licensing before you decide on a company to work with.
  3. Customer Service. Just as important as having the job done right is working with someone who is understanding and friendly. Though it may seem trivial, working with someone who has good customer service skills will help you to feel more comfortable with having them in your home and trusting them to return in the future.

These are just a few important things to keep in mind when selecting an HVAC company to work with.

Here at M&M Mechanical, Inc., we pride ourselves on our professionalism and skilled technicians. Give us a call today to learn more about the services we offer.

Posted by & filed under Seasonal Tips .


Spring is in the air and those hot humid days of summer are not too far behind. This means it’s time to pay some attention to your air conditioning unit. Homeowners who neglect to schedule a regular air conditioning tune-up are often those whose units unexpectedly break down during some of the most uncomfortable times of the year.

For the small expense of a professional tune-up, breakdowns can be avoided; your unit will have a longer lifespan, and operate safely and more efficiently, thus saving you money on energy costs.

A Thorough Tune-Up Includes the Following:

  • Install gauges and check operation pressures.
  • Check voltage and amperage to all motors with meter.
  • Check air temperature drop across evaporator.
  • Check for adequate refrigerant charge.
  • Check filters.
  • Check safety switches.
  • Turn exposed dampers to cooling position, if marked.
  • Check starting contactor contacts.
  • Check all wiring and connections.
  • Check thermostat calibration.
  • Check air temperature across condenser.
  • Check that condensate drain is open.
  • Check total performance and operating efficiency of cooling system.

These are just the main checks that will be carried out by a reliable HVAC technician, like the ones here at M&M Mechanical, Inc. While you can and should regularly change the air filter yourself, you need a trained technician to give your unit a through work over to protect it and the quality of your indoor air – and save you money.

Contact us today to schedule an appointment.

Posted by & filed under General Tips .

Does your furnace keep blowing its fuse? If so, it’s time for some maintenance and possibly some furnace repair. The main reasons you are having likely this problem are as follows:

1. Grime

If your furnace hasn’t been regularly cleaned and maintained, it will have been steadily accumulating dust, debris, and dead insects. Over time, dirt building up in the air filter can transfer itself to the blower motor, resulting in the motor overheating and blowing the fuse. The fuse itself can become so coated with grime that the connection will break. All of this is preventable with regular service of your furnace.

2. Loose Wiring

Vibrations from a working furnace can loosen an internal wire and result in a short. Finding, tightening, or replacing loose wires is not a do-it-yourself job. Prevention is the best policy – have your system inspected and tuned up on a regular basis.

3. Old or Faulty Parts

These may include the following:
Blower Motor – When a blower motor is failing, it tends to draw too much power which may result in a short.
Starting Capacitor – A failing capacitor can result in intermittent electrical problems.
Transformer – The transformer, which runs the ignition, timers, and controls, is necessary to convert the system to run on the correct voltage. If it is worn and not working properly, it can cause a short.
Valves – When a valve in a gas furnace is unable to open and close efficiently, it can overheat, causing an electrical short and a blown fuse.

Don’t give yourself a headache by trying to fix furnace problems yourself. You can save yourself from blowing your own fuse by arranging for regular maintenance of your furnace. Give us a call to get on a regular schedule!