Family Heating Service - Grasonville's Professional HVAC Services
4705 Main St, Grasonville, MD 21638
Main Services
- HVAC system repair
- HVAC installation or replacement
- HVAC system maintenance
Our Story
Family Heating Service is a trusted, family-owned HVAC company that has been serving the Grasonville community for over three decades. Founded by Dennis Tiernan and now co-owned with his son James, the business is built on a foundation of local knowledge and a commitment to personalized service. They specialize in the installation, repair, and maintenance of all heating and cooling systems, including oil heat, gas furnaces, boilers, and heat pumps. Their on-site sheet metal fabrication shop allows for precise, custom solutions for any home. Available 24/7 for emergencies, they ensure Grasonville families stay comfortable year-round with reliable, efficient systems tailored to the local climate.
Question Answers
What's included in your HVAC maintenance service?
Our comprehensive maintenance service is designed to keep your system running efficiently and prevent costly breakdowns. We perform a thorough inspection, clean critical components, check refrigerant levels, test electrical connections, and calibrate your thermostat. For over 30 years, we've found that this proactive approach is the best way to extend the life of your heating and cooling equipment, whether it's an oil furnace, a gas boiler, or a heat pump, and helps maintain lower energy bills for Grasonville homes.
Why is proper HVAC installation so critical for my home?
Correct installation is the most important factor in your system's long-term performance, efficiency, and reliability. An improperly sized or installed unit, a common issue we address, can lead to uneven temperatures, frequent repairs, and significantly higher energy costs. Our team leverages decades of local experience and our own fabrication capabilities to ensure every installation is precisely tailored to your Grasonville home's layout and insulation, providing optimal comfort and efficiency from day one.
My AC stopped working suddenly. Could it be a capacitor, and can you fix it?
Yes, a failed capacitor is one of the most frequent causes of sudden AC breakdowns, especially during our hot Maryland summers. It's a critical component that helps your compressor and fan motors start and run. Our technicians are equipped to diagnose this issue quickly. We carry a wide range of capacitors and other common parts on our trucks, so we can often complete this repair in a single visit, restoring your cooling without delay. Our 24/7 emergency service means we're here when you need us most.
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |













