Step 1: Check the Thermostat
Make sure it's set to "Heat" and the temperature is set above the current room temperature. Check the batteries if it's battery-powered. This sounds obvious, but David estimates 10% of no-heat calls are thermostat issues.
Step 2: Check the Filter and Power
A severely clogged filter can shut down a furnace via the high-limit safety switch. Check the filter and replace if dirty. Also verify the furnace power switch (looks like a light switch near the unit) is on, and check your circuit breaker.
Step 3: What NOT to Do
Do not try to restart a furnace that smells like gas — leave the house and call your gas company. Do not use your oven or stove for heating. Do not run a generator indoors. These cause real emergencies every winter in the DC area.
Step 4: Call D&D
If the thermostat, filter, and power are all fine and you still have no heat, it's time to call a pro. D&D offers same-day emergency furnace repair — including weekends. David's team will get your heat back on safely and quickly.
Need HVAC help in the DC Metro area? D&D HVAC Solutions is ready.