Alliance Heating and Cooling

Alliance Heating and Cooling Serving Southern Maryland! Honesty and Integrity in service, providing a reliable resource for your HVAC needs. Licensed and Insured. HVAC #2319 ELEC #13762

Keep your home comfortable through every season with preventative HVAC maintenance from Alliance Heating & Cooling. Our ...
09/01/2026

Keep your home comfortable through every season with preventative HVAC maintenance from Alliance Heating & Cooling. Our comprehensive 20-point inspection helps identify worn components, airflow problems, and other concerns before they lead to unexpected breakdowns.

Regular maintenance can also improve energy efficiency, support reliable performance, and extend the life of your heating and cooling equipment.

Learn more: https://allianceheatcool.com/hvac-preventative-maintenance/

Don’t let HVAC problems interrupt your comfort. Alliance Heating and Cooling Inc. handles a wide range of heating and co...
08/25/2026

Don’t let HVAC problems interrupt your comfort. Alliance Heating and Cooling Inc. handles a wide range of heating and cooling repairs, including airflow issues, refrigerant leaks, electrical problems, motor failures, ignition concerns, dirty filters, and more.

Our team focuses on safety, efficiency, and long-term performance so you can feel confident in your system again.

Learn more: https://allianceheatcool.com/hvac-repairs/

A little AC maintenance now can help prevent bigger comfort problems later. Alliance Heating and Cooling Inc. offers sch...
08/18/2026

A little AC maintenance now can help prevent bigger comfort problems later. Alliance Heating and Cooling Inc. offers scheduled cooling maintenance for straight AC systems, heat pumps, ductless mini-splits, VRF systems, and light-commercial rooftop units.

From clogged filters and dirty coils to weak capacitors, drainage issues, and airflow concerns, our team looks for the small problems that can turn into summer breakdowns.

Learn more: https://allianceheatcool.com/ac-maintenance/

Don’t let a small AC problem turn into a hot, uncomfortable day. Alliance Heating and Cooling Inc. repairs heat pumps, s...
08/11/2026

Don’t let a small AC problem turn into a hot, uncomfortable day. Alliance Heating and Cooling Inc. repairs heat pumps, straight AC systems, ductless mini-splits, VRF systems, air handlers, and light-commercial rooftop units.

Whether you’re dealing with weak airflow, water around the indoor unit, short cycling, or rising indoor humidity, our team is ready to help.

Learn more: https://allianceheatcool.com/ac-repair/

Your commercial HVAC system plays a big role in keeping employees, customers, and guests comfortable. Alliance Heating a...
08/04/2026

Your commercial HVAC system plays a big role in keeping employees, customers, and guests comfortable. Alliance Heating and Cooling Inc. offers expert service for light commercial systems, including AC repair, heating repair, equipment installation, and routine maintenance.

With years of hands-on experience, transparent pricing, and honest recommendations, our team is here to help your business run smoothly.

Reach out for a free estimate! Learn more: https://allianceheatcool.com/commercial-hvac/

Alliance Heating and Cooling Inc. has been the go-to source for dependable HVAC services since 1988! With our recent mov...
07/28/2026

Alliance Heating and Cooling Inc. has been the go-to source for dependable HVAC services since 1988! With our recent move, we’re even better positioned to serve you with expert heating and cooling solutions for homes and businesses alike. Our team boasts 60+ years of combined industry experience, providing top-tier repairs, installations, and preventive maintenance tailored to your comfort needs.

We believe in honest, transparent service—enjoy free estimates, straightforward pricing, and trustworthy advice without hidden costs or unnecessary upselling. Our certifications from ASHRAE, ABC, and ACCA, plus full licensing across Maryland, Virginia, DC, and local jurisdictions, highlight our commitment to quality workmanship and integrity.

Learn more: https://allianceheatcool.com/about-us/

Address

28799 Three Notch Road
Mechanicsville, MD
20659

Opening Hours

Monday 7am - 3pm
Tuesday 7am - 3pm
Wednesday 7am - 3pm
Thursday 7am - 3pm
Friday 7am - 3pm

Telephone

+13018436674

Website

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