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Earth River Geothermal is an Annapolis, Maryland-based geothermal heating and cooling design and project management firm founded in 2007 and led by President Mark Schultz. The company specializes in designing vertical closed-loop ground-source heat pump systems and managing the full installation process for residential and commercial clients throughout Central Maryland, including Anne Arundel, Howard, Montgomery, Baltimore, Prince George's, and Queen Anne's counties. Rather than self-performing physical drilling and HVAC installation, Earth River coordinates and manages specialized subcontractors for those trades while retaining design authority, system sizing, and performance accountability. Earth River Geothermal has held an A+ BBB accreditation since 2010 and installs equipment certified under the EPA/DOE Energy Star program. Listing details verified via https://www.bbb.org/us/md/annapolis/profile/geothermal-heat-pump/earth-river-geothermal-inc-0011-90169566 and earthrivergeothermal.com (2026-05-28).
Earth River Geothermal designs and manages geothermal heat pump installations for homes and businesses in Annapolis and Central Maryland.
Service Details
schedule
Years in Business
19 years
factory
Brands Installed
Service Area
Serves 16 areas across Maryland
AnnapolisArnoldSeverna ParkMillersvilleDavidsonvilleCroftonGambrillsGlen BurniePasadenaStevensvilleColumbiaEllicott CityRockvilleBethesdaLaurelBowie+4 more
Geothermal heat pump installations in Maryland require specific permits and compliance with state regulations regarding well drilling, loop installation, and refrigerant handling. Contact your local building department for specific requirements in your area.
How much does geothermal installation cost in Annapolis, Maryland?add
Geothermal heat pump installation in Annapolis typically costs between $18,000–$45,000 depending on system size, loop type (vertical vs. horizontal), lot conditions, and home square footage. Available state and utility incentives can reduce net cost (federal §25D credit ended Dec 31, 2025 under OBBBA; §48 commercial ITC may still apply). Request quotes from multiple certified installers in Maryland to compare pricing.
Do I need a permit for geothermal drilling in Maryland?add
Most Maryland municipalities require permits for geothermal well drilling and ground loop installation. Requirements vary by county — some require driller licensing, environmental impact review, or water well permits. Your geothermal installer should handle the permitting process. Contact your local Annapolis building department for specific requirements.
How long does a geothermal system last in Annapolis?add
Geothermal heat pumps typically last 20–25 years for the indoor unit and 50+ years for the ground loop. In Annapolis's climate, a properly maintained system provides reliable heating and cooling with minimal degradation. Annual professional maintenance and filter changes every 3 months help maximize system lifespan.
Is my property in Annapolis suitable for geothermal?add
Most properties in Annapolis, Maryland can support geothermal systems. Vertical loop systems require minimal land area (as little as a standard residential lot), while horizontal loops need more yard space. A qualified installer will conduct a site assessment including soil conductivity testing to determine the best loop configuration for your property.
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If you need to reach Earth River Geothermal directly: (410) 263-8538
Geothermal heat pump installations in Maryland may require drilling permits, environmental site assessments, and compliance with local well and thermal energy regulations. Requirements vary by jurisdiction and system type (vertical, horizontal, open-loop). Contact your local municipality, state energy office, or a licensed geothermal installer for specific permitting requirements in your area.
