Archive for March, 2014


It’s somehow both easy to explain and hard to explain what an air handler does. That’s because it, quite literally, handles your air. But I think we can do better than that!

Most HVAC systems have an outdoor unit and an indoor unit (a “split” system). The indoor unit is the air handler. Without an air handler, you would likely experience poor air circulation in your home as well as poor indoor air quality. Consisting of an air filter, coil, and blower, when an air handler is properly installed, it will help increase your home’s comfort by ensuring that warm and cool air from your furnace, heat pump, or air conditioner reaches every area of your home.

To put it simply, it’s a pretty damn important part of your HVAC equipment.

Types of Air Handlers

Single speed air handler – This type of air handler has a fan motor that operates at one fixed speed.

Five speed air handler – A five speed air handler will offer more precision than a single speed one. Ultimately, the more speeds your air handle offers, the more effective your air circulation will be the more efficiently and quietly your system will operate.

Variable speed air handlers – A variable speed handler comes equipped with a variable speed blower motor to vary the speed of your fan based on your home’s comfort requirements (determined by you—the homeowner). This can be helpful when it comes to controlling humidity levels, improving your indoor air quality, and achieving a consistent temperature in your home.

Insulated air handler – If you’re interested in super-quiet operation, look for an insulated air handler.

Hydronic air handler – These air handlers are designed to work with boilers.

Air Handler Repair

Like the rest of your HVAC equipment, your air handler can become run down and require repairs. So if you need air handler repair or any other HVAC repairs in the Frederick or Gaithersburg, MD areas, contact GAC Cooling & Heating. We offer up-front pricing and 100 percent satisfaction guaranteed. Call us today!

Category : Air Quality | Blog

Most people don’t spend a lot of time thinking about their air ducts. But did you know that sealed and insulated ducts can make your home more comfortable and energy efficient? Did you also know that energy efficient is basically code for saving money on your monthly utility bills?

There are several signs that your home could benefit from duct sealing:

  • High utility bills
  • Rooms that are too hot in the winter/too cold in the summer
  • Excessive dust in your home

When you have leaky air ducts, it reduces the efficiency of your home’s HVAC systems. Duct sealing can therefore help save you money by increasing the efficiency of your system’s performance and therefore lowering your energy bills.

Of course there are other benefits to duct sealing:

  • Duct sealing can help improve your home’s indoor air quality.
  • It also reduces the risk of backdrafting, if you have a gas furnace or water heater.
  • Since duct sealing helps conserve energy, it’s also a great way to minimize your home’s environmental impact.

Schedule a Duct Sealing Appointment with GAC

At GAC Cooling & Heating, we offer duct sealing in the Gaithersburg and Frederick, MD areas. We’ve come to trust Aeroseal when it comes to sealing our customer’s air ducts. We find it to be the most cost effective way to reduce duct leakage and to help them save money on their energy bills.

How does it work? Aeorseal is an aerosol spray which is injected into your ducts. As tiny holes in your duct draw air toward it, the Aeroseal particles smack right into them, sealing them up tight. Now, air moves through your ducts the way it’s supposed to, and into the areas of your home where you most need comfort. The whole process takes just a few hours and can reduce leaks by up to 98 percent.

The duct sealing treatment comes with a 10 year warranty, and often customers see energy savings within 2-3 years that totally pay for the cost of the sealing. All in all, it’s a great solution for your wallet and for your overall comfort.

Contact us today for an estimate on duct sealing in the Gaithersburg or Frederick, MD areas!

Category : Duct Sealing | Blog

Heating and cooling your home account for more than half of your home’s energy use and consequently, utility costs. We’re not making this up—take a look at how the Department of Energy breaks it down:

  • At 45 percent, heating accounts for the biggest portion of your home’s energy bills
  • Next up is water heating, at 18 percent
  • Following that is cooling at 9 percent
  • The rest breaks down into electronics, lighting, cooking, refrigeration, etc.

As you can see, one of the biggest opportunities for cutting down on your home’s energy use lies in your heating and cooling equipment.

So how can you make your home’s heating and cool more energy efficient? There are actually a number of ways to go about doing this, but today we’re going to discuss green HVAC equipment.

If it’s about time for you to think about your replacing your unit, chances are you might have interest in a green HVAC system—both from an environmental standpoint and a lower energy bills standpoint. (It’s still noble; we promise.)

What to Look for in a Green HVAC System

The easiest way to make sure you’re installing a green HVAC system is find one that meet the specifications of the ENERGY STAR program. And according to the Department of Energy, replacing your old HVAC system with ENERGY STAR qualified equipment can cut your annual energy bill by nearly $200.

Here are the specs:

Green Furnaces

In order to gain an ENERGY STAR label in Maryland (specifications are different in the U.S. South than they are in the U.S. North), furnaces must meet the following criteria:

Gas Furnaces:

  • 90% AFUE
  • Less than or equal to 2.0% furnace fan efficiency
  • Less than or equal to 2.0% air leakage

Oil Furnaces:

  • 85% AFUE
  • Less than or equal to 2.0% furnace fan efficiency
  • Less than or equal to 2.0% air leakage

Green (Air Source) Heat Pumps

In order to gain an ENERGY STAR label, air source heat pumps must meet the following requirements:

Split Systems:

  • 8.2 HSPF
  • 14.5 SEER
  • 12 EER

Singe Package Systems:

  • 8.0 HSPF
  • 14 SEER
  • 11 EER

Green Central Air Conditioners

In order to gain an ENERGY STAR label, central air conditioners must meet the following requirements:

Split Systems:

  • 14.5 SEER
  • 12 EER

Single Package Systems:

  • 14 SEER
  • 11 EER

Our Favorite Green HVAC Systems

You might have noticed that here at GAC, we’re fans of Bryant (and the folks at Bryant appear to be fans of us too!). One of the reasons is because almost all of Bryant’s systems are ENERGY STAR certified—making them more environmentally friendly and energy efficient than non-certified models. Many of the systems go a step further to use environmentally friendly refrigerant.

If you’re in the market for a new HVAC system and want to go green, call the experts at GAC for HVAC installation in the Frederick, MD area. We’ve serviced thousands of homes in Frederick, MD and the surrounding areas, so chances are we’ve serviced your neighbor’s home. Contact us today for more information.

Category : Energy & Money Saving Tips | Blog