Posted by & filed under Heating .

Whether it is small problem or a large one, anything that keeps your furnace from working properly needs to be addressed right away. And some issues that are found and repaired soon enough can save you a lot of money down the road. What are some common problems, you ask?

Dirty Air Filters. Air filters should be cleaned or replaced once a month. Be sure to follow the manufacturer’s guidelines. Dirty filters make the furnace work harder to circulate air because it hinders the air flow. Eventually, it might affect the limit switch that runs the fan.

Too Much Noise. A noisy furnace can have many causes. There may be a mechanical malfunction or clogged air flow. Turning off and on too often can be a defective thermostat. Rumbling and sputtering is not the sign of a healthy or effective furnace.

Not Enough Heat. Obviously, you should make sure the unit is large enough for your space. After that, the thermostat should be checked to make sure it is working properly. Settings for the thermostat and working batteries can also affect this function. When all else fails, you should check the power and the pilot light.

Improper Maintenance. Your furnace should be inspected by a professional at least once a year. They can fix small problems and recommend preventative measures to keep your furnace running at top performance.

A well-functioning furnace is vital to your home’s comfort. It also reduces your power bill. Keeping ahead of the problems and following these few guidelines will give you a furnace that will last for years.


We encourage you to contact us at M&M Mechanical, Inc. for your heating service needs.

Posted by & filed under Heating .

There is no system in your home more important to your comfort or utility bills than your heating system. It is for this reason that professionals recommend you have your heating system serviced once a year, preferably in the fall. This will better secure that your residential heating system is running efficiently during the coldest months of the year. Don’t you agree?

Not only will an annual heating system service inspection assure the system is working, it will also help prolong the life of the unit and decrease health risks. Every heating manufacturer agrees, you should get your system serviced once a year. Much like an automobile, if you just ignore it, parts will start to wear out over time. Regular inspection and maintenance will help stop a catastrophic breakdown and will extend the unit’s life.

In fact, approximately 75 percent of emergency calls in winter, caused by no heat, are a direct result of a lack of maintenance. By not ensuring your unit is serviced, your heat could fail suddenly, and leave your family in the cold. Moreover, annual inspections can uncover carbon monoxide leaks, which is a toxic gas that is colorless and odorless. Carbon monoxide poisoning can cause symptoms that include headaches, dizziness, and nausea but also death. There are an estimated 15,000 people treated in emergency rooms annually because of carbon monoxide, and approximately 500 deaths.

Moreover, it is essential to have your inspection and maintenance completed by a professional service technician. Your home’s heating and cooling are complex systems, and you need to ensure things are done right. That said, there are some simple things that a homeowner can do on their own to keep things running smooth. For instance, ENERGY STAR recommends changing air filters at least every three months. Poor airflow, from a clogged filter, can negatively impact your health by exposing you to high levels of indoor pollutants and contaminant.

Ultimately, it is not uncommon that the only time a homeowner thinks about their heating system is when it doesn’t work. They simply don’t believe maintenance has a good return on the investment; that all changes after a catastrophic failure on a cold winter night.

Posted by & filed under Heating, thermostat .

There was a time when a thermostat was a simple, uncomplicated device used to control your home’s temperature. They used a mechanical switch to turn your heating system on when needed, and off when it reached the proper temperature. That said, while reliable, they were inaccurate and required manual setting. Today, homeowners have options that will accurately and automatically control their home heating, improving comfort and saving money.

Over the course of the cold winter months, many homeowners are in a tug of war with their thermostat. They attempt to keep the balance between warm comfort and saving heating costs. They will manually turn their thermostat 7 to 10 degrees cooler when they leave for work, then turn it back up when they come home to a cold house. A programmable thermostat is an inexpensive solution that helps ensure you save on your bills but always come home to a warm house. Would that be of benefit to you?

Programmable thermostats come with a variety of features, but most include a 7-day schedule that will automatically adjust your temperature when you need it. However, many also can recognize weekday versus weekend schedules, have multiple settings for when you are away versus asleep, and will make arguments for scheduled holidays. Regardless, the next step in thermostat technology is the smart thermostat.

Smart thermostats have internet connectivity. So, not only can you program a set schedule, you have the power to control your home temperature remotely using an app. Smart thermostats also have handy features like dirty filter detection, and will send a reminder notification to replace your filters to your phone. Moreover, they have the power to learn your preferences. For instance, if you always turn the temperature up when the outdoor temp reaches a certain point, a smart thermostat will learn this preference and start making the adjustment automatically. Also, they can use your smartphone’s location to determine if you are coming home early, and will adjust your home’s temperature before you get there.

Ultimately, a programmable thermostat or smart thermostat will help you save money on your utilities and improve your comfort. They are a big leap from the old-style thermostats, still common in many homes. Overall, they are well worth the investment.

Give us a call at M&M Mechanical, Inc. if you’re interested in heating service in Woodbridge, VA. We’re family owned and have dedicated ourselves to satisfying our customers’ needs for 40 years!

Posted by & filed under Air Conditioning .

Your air conditioner is a hard-working machine. It cools your home on the hottest of days, and keeps you and your family comfortable all summer long. Unfortunately, without proper maintenance your A/C can become a burden rather than an advantage. You can avoid complications with your system by starting with a yearly tune-up.

To help you better understand the importance behind getting your air conditioning serviced, we’ve listed 3 benefits below.

Better Efficiency

A dirty air conditioner equals an inefficient air conditioner. If you’ve noticed a spike in your energy bill and you chose to skip your unit’s yearly tune-up, your system is probably suffering from a clogged air filter and an abundance of dust and dirt. Hiring a HVAC specialist to tune-up your unit guarantees your unit will receive a thorough cleaning. Once all that dirt is gone, you’ll see a drop in your energy bill, meaning your A/C is operating at a more efficient rate.

Fewer Repairs

Your air conditioner has many moving parts, and over time those parts will begin to wear down. Unfortunately, if your system goes unchecked, that wear and tear will eventually lead to a serious malfunction. Luckily, you can save your air conditioner from costly repairs with a yearly tune-up. During the tune-up, your HVAC professional will give your unit a detailed inspection. If there are any problematic components, you’ll be notified, which may end-up saving your A/C from a major malfunction and you from an expensive repair.

A Longer Life

Malfunctioning parts and excessive dirt will lead to your air conditioner calling it quits before it reaches the end of its expected lifespan of 12 to 17 years. Scheduling a yearly tune-up can stop this from happening and save you money in the long run.

An air conditioning tune-up is key to your system running smoothly. If your unit hasn’t had its annual check-up, we suggest scheduling one today with M&M Mechanical, Inc.

Posted by & filed under Air Conditioning Service .

Here we are, a good way through another hot summer and you’re still sweltering through it without air conditioning, just biding your time until the first cool days of fall arrive. Or maybe you’ve got a window unit in your bedroom so you can at least get some sleep at night. We are here to help!

New Options

These days, central air doesn’t necessarily have to mean running duct work throughout your home. Today’s mini split-systems are effective and require only “minimally invasive” installation. They’re perfect for homes that use hot water heating or radiant panels. But the main advantages of mini splits are their small size and flexibility for zoning or cooling individual rooms.

Just like a conventional central air conditioning system, a mini split-system has two main components

  1. an outdoor condensing unit
  2. an indoor air-handling unit

These two components are linked together by a conduit housing the power cable, the refrigerant tubing, suction tubing and a drain to take care of condensate.


Many mini split-system units come with as many as four indoor handling units to handle separate areas where your family spends most of its time (e.g. bedroom, kitchen, living room or family room). All of the indoor air handlers connect to one outdoor condensing unit.

A nice benefit of this system is that each of the air handlers will have its own thermostat, which means you can save energy (and money) by cooling those rooms only when they’re actually occupied. Another plus is that mini split-systems offer more flexibility in interior design options. The indoor air handlers can be suspended from a ceiling, mounted flush into a drop ceiling, or hung on a wall. See what we mean by versatility?


You’ll pay more upfront for a mini-split system than you would for conventional central air, but as mentioned, it doesn’t require the bother and disruption of running duct work throughout the house. It’s also more efficient than a conventional central air conditioning system, which can lose up to 30% of the energy it consumes through duct losses, especially when ducts run through areas with little insulation, such as an attic.

Whether you decide to go with a conventional central air conditioning system or a mini split-system, your investment will serve you well for many hot summers to come, and will also increase your home’s value!

Give us a call at M&M Mechanical, Inc. if you’re interested in air conditioning service in Newington VA. We’re family owned and have dedicated ourselves to satisfying our customers’ needs for 40 years!