Appreciate the Benefits of Geothermal for your Home

All Air Systems Air Conditioning and Heating

WaterFurnace Residential Product Line



Lower Cost of Ownership

+ Geo systems last longer than traditional systems

+ Drastically reduced HVAC related utility bills

+ Lower cost of replacement


Hot Water Assist

+ Also provide hot water for your home


Typically Require Less Maintenance

+ All equipment is indoors not exposed to the weather

+ No more boilers, oil, and seasonal shutdowns and startups


Safer, Cleaner, and Quieter

+ Use sustainable energy

+ Reduce fossil fuel consumption & greenhouse gasses

Get a Quote For Your Project

No yard too big or too small*

There are several ways to install the ground loop. One method is by installing the loop horizontally. Horizontal loops are not deep, but require more yard square footage.

Another method is installing vertical loops. These loops require less square footage and are drilled down to nearly 300 feet.


For either method, the ground loop is brought into the house below grade. The loop is filled with a water and an anti-freezing agent, while the air is vented out.

The geothermal heating and air conditioning equipment is then installed inside the home, either in the basement or in another designated area.

 *within certain limits.


Why WaterFurnace?

WaterFurnace is an industry leader in the Geothermal equipment market. They have a long history of engineering and producing geothermal heating and air conditioning equipment. In fact, not only does Water Furnace produce high quality geothermal equipment for homes, it is also a part of a larger company that also continues to make a huge and significant impact in the commercial sector.

WaterFurnace equipment is tried and true and has proven itself to customers and heating and air conditioning contractors.


Let’s Build Something Together

Let us help you do the math comparing energy usage of your traditional hvac system vs. a geothermal system. We will prepare a comparison analysis using real data, including your energy rates, system efficiency specifications, and load calculations for your home.

In the meantime, read about the 7 Series variable speed WaterFurnace system by clicking the button below. 

Contact Us

Located in Cockeysville, MD


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We are OPEN for business but PLEASE READ: Coronavirus Announcement

Coronavirus Update

Dear All-Air Systems Customer,

The health of our customers and our team are our top priority.

Our team works diligently every day to provide a clean and comfortable environment for our customers, therefore our operations remain largely unchanged. All our dedicated team members have been instructed to monitor their own health very closely. If a team member is showing any symptoms of any illness, they have been advised to seek medical attention and treatment and not to report to work until their symptoms have resolved.

If you fear you have been exposed to COVID-19 or are concerned about your personal health and have an upcoming appointment, please let us know. You may reach us at our office at 410-877-6100, via email at or through our website at

Rest assured you can count on us for all of your HVAC service and replacement needs.

Wishing you the best of health!

Andrew Knicley

All-Air Systems