At Alliance Heating and Cooling Inc., we've been the trusted choice for expert heating and cooling services since 1988, recently relocating to better serve the HVAC needs of Southern Maryland residents. From expert HVAC repairs to residential and commercial installations, we provide top-quality services tailored to your needs. With over 60 years of combined trade experience, our skilled HVAC technicians handle everything from complex repairs to preventative HVAC maintenance packages that keep your systems running efficiently year-round while protecting against unexpected breakdowns. Your comfort and satisfaction with our services are our highest priorities.
Our commitment to transparency and integrity means you’ll always receive free estimates, upfront pricing, and honest recommendations—no hidden fees or unnecessary upsells. At Alliance Heating and Cooling Inc., we’re dedicated to delivering reliable solutions and building lasting relationships with customers through exceptional service you can trust. We hold various certifications that solidify our dedication to premier quality work, including belonging to the American Society of Heating and Air Conditioner Engineers (ASHRAE), American Builders and Contractors (ABC), Air Conditioner Contractors of America (ACCA), and holding licenses in Maryland, Virginia, DC, and various county specific licenses required in certain regions.
HVAC Repairs
Alliance Heating and Cooling Inc. offers reliable HVAC repairs to address issues with sensors, motors, airflow, refrigerant leaks, and more. Our skilled technicians thoroughly assess and fix problems to restore your system's functionality while prioritizing your safety and comfort. We aim to extend the lifespan of your HVAC system and enhance its overall performance.
Heating Installation
Alliance Heating and Cooling Inc. delivers expert heating installations tailored to your home's needs. We specialize in installing heat pumps, furnaces, and energy-efficient mini-split systems, ensuring optimal indoor comfort even during the coldest months. Our installations maximize efficiency while minimizing energy costs.
HVAC Preventative Maintenance
Alliance Heating and Cooling Inc. provides comprehensive biannual HVAC preventative maintenance to keep your HVAC system at peak performance. Our detailed 20-point inspections, conducted in spring (April-June) and fall (October-December), identify potential issues early to prevent costly repairs. This service ensures your system runs efficiently year-round, saving you time and hassle.
Duct Cleaning
Alliance Heating and Cooling Inc. offers professional residential duct cleaning to effectively improve your indoor air quality and system efficiency. We also provide dryer vent cleaning, duct sterilization, and high-efficiency air filters to ensure clean airflow throughout your home. Our in-house experts also handle custom ductwork fabrication, installation, and repairs to suit your unique requirements.
AC Installation
Alliance Heating and Cooling Inc. specializes in precise AC installation for residential and commercial spaces. We handle everything from standard units to advanced mini-split systems and multi-zone ductless units, using top brands like Armstrong Air, Ducane and LG. Our installations focus on energy efficiency and adaptability for year-round cooling comfort.
Commercial HVAC
Alliance Heating and Cooling Inc. delivers dependable commercial HVAC services tailored to your business needs. We work with heat pumps, ACs, furnaces, boilers, mini splits, VRF systems, air purifiers, and rooftop units. Our services ensure your commercial space stays comfortable and energy-efficient, helping you create a productive and inviting business environment.
With over 60 years of combined, hands-on experience and 36 years in business, our skilled HVAC technicians are prepared to address even the most challenging repairs and installations. We are dedicated to delivering exceptional craftsmanship you can rely on, ensuring your HVAC system operates smoothly and efficiently—every time.
We prioritize open and honest communication throughout every step of your project. From providing free estimates and upfront pricing to clearly explaining the work involved, we make sure you’re always informed. There are no hidden charges or surprises—just straightforward, reliable service.
Your satisfaction and comfort are at the core of everything we do. We take pride in providing honest and reliable advice to provide expert recommendations tailored to your unique needs. You can trust us to deliver quality solutions without cutting corners or leading you down the wrong path.
We stand by our work with warranty coverage for added peace of mind. All service repairs include a 30-day labor guarantee, while new installations have a 1-year labor warranty. Our firm commitment to quality extends well beyond project completion.