Why Is My Heating Not Working Properly?

Heating November 18, 2025

Why Is My Heating Not Working Properly?

Couple wearing winter coats inside of their home because the heating is not working

It never takes long for winter in Northern Virginia to remind you how much you rely on your heating system. Whether you use a furnace or a heat pump, you notice right away when your heating system isn’t quite keeping the cold at bay. Sometimes the fix is simple. Other times, a mechanical or electrical issue is standing between your home and the warmth you expect. This guide walks you through the most common causes of heating problems and helps you know when it’s time to call in the pros for heating repairs.

Common Heat Pump Issues in Winter

Heat pumps work efficiently for most of the year in Manassas and the surrounding areas, but cold snaps can push them harder than usual. When something starts to go wrong, the symptoms tend to show up quickly.

Common heat pump problems include:

  • Restricted airflow: A clogged air filter reduces airflow over the coils, which prevents the system from producing steady heat.
  • Frozen outdoor coils: Moisture on the outdoor unit can freeze when temperatures drop, and ice buildup keeps the heat pump from absorbing heat outside.
  • Refrigerant problems: A system with low refrigerant struggles to move heat effectively, causing lukewarm air or constant running.
  • Faulty reversing valve: The valve that allows the heat pump to switch from cooling to heating can fail, leaving the system stuck in the wrong mode.
  • Electrical issues: Loose wiring or failing components can interrupt the power your heat pump needs to start and cycle normally.

Common Furnace Issues in Virginia Homes

Gas furnaces handle winter temperatures well, but they can also run into problems after months or years of use. Many of these issues start small and grow noticeable once the cold settles in across Northern Virginia.

Common furnace issues include:

  • Dirty burners: When dust or debris collects on the burners, the flames become uneven and the furnace cannot heat efficiently.
  • Ignition failure: Problems with the igniter or pilot mechanism prevent the furnace from starting, often showing up as repeated attempts to turn on.
  • Worn blower components: A struggling blower motor or fan keeps warm air from circulating, which results in cold spots and longer run times.
  • Clogged air filters: A blocked filter restricts airflow, leading to overheating and short cycling that puts extra strain on the system.
  • Flue or ventilation problems: Blocked or damaged venting keeps combustion gases from exhausting properly and can force the furnace to shut down for safety.

When To Call the Professionals

A few heating issues have simple fixes you can address on your own. Replacing an air filter, making sure vents are open, clearing snow or yard debris from around an outdoor heat pump, and checking thermostat settings are all safe first steps. If those adjustments don’t seem to work, the problem is likely deeper inside the equipment.

Any winter HVAC issues involving electrical components, ignition systems, refrigerant, or repeated shutdowns should be handled by a trained technician. These types of heat pump and furnace repairs require specialized tools and safety knowledge, and only a professional can diagnose the exact cause. If you notice burning smells, new noises, or the system refuses to start at all, it’s best to schedule service right away.

Stay Warm This Winter With Parrish Services

Heating problems tend to show up on the coldest days or nights, so it’s a good idea to have a reliable HVAC contractor on call for heat pump or furnace repairs in Manassas, VA, and the surrounding areas. Parrish Services offers expert HVAC support, including 24/7 emergency services when your heating’s not working in Northern Virginia.

Our work is backed by a team known for quality work and thoughtful service. As an award-winning provider offering emergency heating repair service, we’re prepared to respond quickly when your heat pump or furnace begins to struggle. Our technicians bring local knowledge and a careful approach to every job, making it easier to keep your home comfortable through every shift in the weather.

Contact Parrish Services for heating repairs in Manassas and Northern Virginia.

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