Expert HVAC Services in Rising Sun, MD, and Surrounding Areas

When it comes to HVAC services, experience and reliability matter. With four decades of professional expertise, we know how to diagnose, repair, and maintain systems of every make and model. As a locally owned business, we understand the seasonal challenges unique to Cecil County and the surrounding Mid-Atlantic region. From sweltering summer days to freezing winter nights, our team is ready with cost-effective solutions that keep your home or business running smoothly.

Your home should always be a place of comfort, no matter the weather outside. That’s why we offer complete residential HVAC services tailored to your needs. From new system installations and AC replacements to furnace repair and heat pump services, we deliver results that maximize efficiency while reducing energy costs. Our technicians also provide proactive maintenance to extend the life of your system and prevent costly breakdowns.

When your air conditioner breaks down, you need fast and dependable service. Our licensed HVAC technicians provide AC repair services to quickly restore cooling performance and improve indoor comfort. If your unit is outdated or beyond repair, we also specialize in air conditioning replacement, installing high-efficiency systems that keep your home cool while saving on energy bills.

Staying warm in the winter is a necessity, not a luxury. That’s why our team provides comprehensive heating repair services to address common issues like uneven heat, noisy systems, or units that won’t start. For homes that rely on gas or electric furnaces, we also offer trusted furnace repair to keep your system safe and efficient. If your heating system is outdated, we provide professional guidance on upgrades to ensure long-lasting comfort.

Heat pumps are one of the most energy-efficient ways to heat and cool your home, but eventually, they need replacing. Our heat pump replacement services are designed to provide you with a reliable, cost-effective system that performs year-round. We install modern units that not only improve comfort but also help reduce monthly utility bills.

Business owners in Rising Sun, MD, rely on G. Cullum Heating & Cooling for dependable commercial HVAC services. Whether you operate a small retail space, office, or larger facility, we provide installation, repairs, and preventative maintenance programs tailored to your business. Our goal is to minimize downtime, keep employees and customers comfortable, and ensure your HVAC systems run efficiently all year.

Routine HVAC maintenance is the key to avoiding costly repairs and extending the life of your equipment. We offer affordable HVAC maintenance programs that include inspections, cleanings, and performance checks. These programs help improve system efficiency, prevent unexpected breakdowns, and give you peace of mind knowing your HVAC systems are always ready for the next season.

While based in Rising Sun, MD, we proudly extend our HVAC expertise to surrounding communities. Whether you need emergency repairs, system upgrades, or routine maintenance, our licensed and insured technicians are ready to serve nearby cities and neighborhoods with the same level of dedication and professionalism that has defined our company for more than 15 years.

With 40 years of experience, our team is more than just technically skilled—we are committed to providing honest, reliable service that puts our customers first. We believe in upfront pricing, transparent communication, and delivering solutions that are safe and cost-effective. Our reputation has been built on trust, and we take pride in being the HVAC company families and businesses in Rising Sun rely on year after year.