About Sines and Sons
Your Trusted HVAC Company in Arnold, MD
For over 20 years, Sines and Sons has been the #1 choice for reliable, professional, and customer-focused heating and cooling services in Arnold, MD, and across Anne Arundel County. As a family-owned and operated HVAC company, we take pride in delivering dependable comfort solutions backed by old-fashioned service values and modern technical expertise.


A Legacy of Trust and Excellence
At Sines and Sons, we understand that trust is earned. Our customers rely on us not just for fixing their furnaces or installing new AC systems, but for delivering peace of mind with every visit. We’re known for:
Friendly, honest service
24-hour emergency HVAC assistance
Competitive pricing on all brands
Fully trained, certified technicians
Long-standing community relationships
Our reputation as a leading residential and commercial HVAC contractor has been built one service call at a time, through consistent quality and genuine care.
Why Homeowners and Businesses Choose Us
Our services include:
Heating and air conditioning installation and repair
Preventive HVAC maintenance
Emergency HVAC repairs
Energy-efficient equipment upgrade
Personalized, Professional HVAC Services
What sets Sines and Sons apart from other HVAC service providers is our personalized approach. We listen. We advise. And we tailor solutions to your specific needs—no cookie-cutter fixes or pushy upsells.
Our team is available around the clock to ensure your system performs when it matters most. Whether it’s a frigid winter night or a blazing summer afternoon, we’re there when you need us.
Commitment to Sustainability
We’re not just passionate about comfort—we care about the environment too. That’s why we specialize in energy-efficient HVAC systems, helping our customers reduce their carbon footprint while enjoying consistent, affordable comfort.
A Look Ahead
As we continue to grow, our core values remain unchanged: integrity, quality, and customer-first service. Sines and Sons is proud to be a part of the Arnold, MD community, and we look forward to keeping homes and businesses comfortable for decades to come.
Thank you for trusting Sines and Sons—your dependable HVAC company near Arnold, MD—for all your heating, cooling, and comfort needs.
