A home without heat in colder weather needs a decision path. Start by checking safety; then collect only information you can see without disassembling the furnace.
1. Decide whether to leave first
2. Notice the system state
- Nothing starts: note the thermostat mode, display and whether any fan turns on. See no-start furnace guidance.
- Air flows but stays cool: note when it became cold and whether all rooms are affected. See cold-air patterns.
- Heat begins, then stops: note the timing and any displayed error; do not repeatedly defeat a safety lockout.
3. Protect people while arranging help
Dress in warm layers, use safe occupied spaces where possible, and avoid improvised indoor heating such as an oven or outdoor fuel-burning equipment. If vulnerable occupants cannot remain warm, arrange a safe alternate location while the provider confirms a visit.
4. Call with useful details
Provide your full street address, ZIP, symptoms, equipment type if known, and whether any other heat is available. Ask what the provider can schedule and clarify any charges before work begins.
Littleton context
Littleton mailing addresses cover parts of Arapahoe, Jefferson and Douglas counties. The service-area guide explains why a ZIP alone does not prove city limits or dispatch coverage. For current weather, use the National Weather Service rather than a fixed weather claim on this page.