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Your Trusted Maryland HVAC Experts
At Allied-Phillips, we have dedicated ourselves to redefining indoor comfort for homeowners across Maryland. With more than 45 years of hands-on experience in HVAC services, our team combines deep technical expertise with a commitment to personalized solutions. As a Trane Authorized Dealer, we adhere to rigorous standards of professionalism and product knowledge while delivering installations, repairs, and maintenance services that prioritize long-term system performance. Our approach emphasizes collaboration with homeowners and builders, focusing not only on equipment functionality but also on educating customers about optimal system care. Recognizing that emergencies demand immediate action, we maintain a 24-hour emergency service team ready to restore comfort during critical situations. Our technicians undergo continuous training to stay current with evolving HVAC technologies, ensuring we can service all makes and models while offering specialized expertise in geothermal and ductless systems.

The company's commitment to quality extends beyond technical competence to include meticulous attention to cleanliness, timely arrivals, and transparent communication throughout every service interaction. While serving Harford and Baltimore Counties, we have cultivated relationships with major manufacturers, including Mitsubishi and Ruud, to provide access to cutting-edge equipment with proven reliability. Customer testimonials consistently highlight our ability to diagnose complex issues, implement lasting solutions, and maintain a professional presence in clients' homes. This combination of technical excellence, industry partnerships, and service ethic forms the foundation of our ongoing mission to deliver superior HVAC solutions tailored to Maryland's climate challenges.
Services
Gas Furnace Repair Heat Pump Installation Air Conditioning Service Ductless Systems Air Cleaning Products Maintenance Agreements Emergency Services Financing Options Free Estimates Geothermal Heat Pumps
Highlights and features
  • We offer 45+ years of combined HVAC industry experience
  • Our team provides 24/7 emergency response service
  • We maintain Trane Authorized Dealer certification
  • We include free estimates on system installations
  • We offer flexible financing options for HVAC upgrades
Associations and certifications
  • Trane Authorized Dealer
What people say
Excellent customer service Skilled and efficient Courteous and timely First class job Top notch workmanship
Services
Gas Furnace Repair
Our certified technicians diagnose and repair all gas furnace makes and models, ensuring safe operation during Maryland's coldest months. With specialized training and advanced diagnostic tools, we address ignition failures, heat exchanger issues, and efficiency problems while maintaining manufacturer warranty requirements. Regular maintenance visits help prevent unexpected breakdowns and extend equipment lifespan.
Heat Pump Installation
We specialize in air-source and geothermal heat pump installations, providing energy-efficient heating and cooling solutions for Maryland homes. Our NATE-certified technicians follow strict installation protocols to ensure optimal performance while educating homeowners about system operation and maintenance requirements. We assist with selecting appropriately sized units based on home insulation and climate needs.
Air Conditioning Service
Our comprehensive AC service includes diagnostic testing, refrigerant recharge, and component replacement for central and ductless cooling systems. Technicians perform coil cleaning, electrical connection checks, and thermostat calibration to restore cooling efficiency. We emphasize early intervention during spring inspections to prevent summer performance issues.
Ductless Systems
We professionally install Mitsubishi Electric ductless heating and cooling units for home additions, renovations, and buildings without existing ductwork. Our team handles multi-zone configurations while ensuring proper refrigerant line placement and condenser positioning. These systems improve energy efficiency by allowing room-specific temperature control without duct losses.
Maintenance Agreements
Our customized maintenance plans include bi-annual inspections, system cleaning, and priority service scheduling. Plans A, C, and E offer different coverage levels for parts and labor, with emergency service availability included in premium plans. Regular maintenance preserves manufacturer warranties and helps identify potential issues before system failure occurs.
Questions
What HVAC services do you offer in Maryland?
We provide heating, air conditioning, and ventilation services including installation, repair, and maintenance for residential properties across Harford, Baltimore, and Cecil Counties.
Do you offer emergency HVAC repair services?
Yes, our certified technicians provide 24/7 emergency repair service for critical HVAC failures with same-day response during extreme weather conditions.
Are financing options available for new HVAC systems?
We offer flexible financing plans for qualifying customers to help with the installation or replacement of heating and cooling systems.
What areas do you service?
We serve Harford County, Baltimore County, and Cecil County including Bel Air, Towson, Catonsville, Hunt Valley, and surrounding Maryland communities.
What brands do you work with?
As a Trane Authorized Dealer, we specialize in Trane equipment while also servicing Mitsubishi, Ruud, Rheem, and other major HVAC brands.
What maintenance plans are available?
We offer three maintenance plans (A, C, E) with differing coverage levels including parts replacement, labor coverage, and priority service scheduling for heating and cooling systems.