Ground Loop Heating and Air Conditioning, Inc
1701 Whiteford Road , Darlington, Maryland, United States

Ground Loop Heating and Air Conditioning, Inc., is a third-generation family-owned heating and air conditioning business specializing in WaterFurnace geothermal systems. What started as a small sheet metal company in Maryland is now one of the most established geothermal companies in the entire country.  For over 30 years, our company has been designing and installing HVAC systems of all sizes for residential and light commercial applications. We are leaders in innovative technologies that keep families and businesses comfortable, all while saving money and preserving our resources for future generations. Our IGSHPA-certified installers strive for complete customer satisfaction on every job.  Many people in town still remember us as Dublin Sheet Metal, the company Al Cullum started in the basement of his Darlington home. He later became Dublin Heating and Air Conditioning, which he ran with his two sons Mike and Gary. Mike eventually went off to carve out his own path, and Ground Loop was born. Today, he runs the business with his two sons, Jason and Scott.  At Ground Loop, our entire team operates on the principles of honesty, integrity, and quality work delivery. We have installed thousands of geothermal systems in Maryland and the surrounding areas. Our A+ rating with the Better Business Bureau tells you we are a company you can trust.  We offer top-of-the-line geothermal products at competitive prices, thanks to our extensive industry, relationships, and longtime customer loyalty. We are familiar with the requirements of general contractors and will coordinate with project managers, architects, designers, site managers, and other sub-contractors to facilitate a smooth installation process.  We go above and beyond to ensure the installation process is minimally disruptive to your life—and we are always available to answer any questions you may have.

HVAC Services

Our experts can install, repair, and maintain every piece of HVAC equipment in your home, including heat pumps, boilers, air conditioners, gas furnaces, oil furnaces, and mini splits. When it comes to making your home or business comfortable and safe, Ground Loop has the HVAC solution for you.

Gas Furnaces

Furnace service. Ground Loop Heating & Air Conditioning is the leading HVAC company in Annapolis, MD, for your furnace service needs. We service and repair all makes and models. If you need furnace service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.

What Is Geothermal Energy?

Geothermal energy is the heat from the earth. It can be found almost anywhere, including Maryland.  Geothermal heating capitalizes on the fact that temperatures in the Earth remain fairly constant when digging just a few feet below the surface. Whether you live somewhere where temperatures fluctuate or somewhere with a more constant temperature, the temperature below the surface stays relatively the same.  The upper part of the earth’s crust, roughly the first ten feet of ground, can maintain a temperature between about 50°F and 60°F. Geothermal heat pumps can use this energy to heat and cool buildings while using less energy than a typical HVAC system.  Geothermal heat pumps do not burn fossil fuels; instead they simply transfer heat from the earth to your home and back out. Because these pumps harness the earth’s available energy, they can save you anywhere from 30 to 70 percent on your bill over the next five to ten years.  Say it’s 5°F one night during the winter, and you have your thermostat set for a cozy 72°F in your home. It takes a lot less energy to reach your desired temperature if the starting point is 55°F using a geothermal heat pump.

Geothermal Heat Pump Installation

At Ground Loop Heating and Air Conditioning, we are the premier provider of geothermal system installation across the Northeast. We have installed far more systems than any of our closest competitors.

Qualified Geothermal Installer

When it comes to the replacement of your geothermal HVAC system, you will need to carefully consider the company that you work with on this vital task. At Ground Loop, we will work closely with you to determine the ideal system for your needs and we provide flexible financing options to help you complete your purchase. We’ll even handle any necessary rebate paperwork to ensure that your system is as affordable as possible. Our A+ rating with the Better Business Bureau lets you know we are a business that values honesty and integrity. We are IGSHPA-certified and a member of the Geothermal Heat Pump Consortium (GHPC), so you can trust our expertise, experience, and commitment to quality.