Emergency heating repair in Menlo Park starts with one question: is anyone in danger, or is the house just cold? Most no-heat calls come down to the thermostat, the igniter, a dirty flame sensor, blocked airflow or a safety switch, and a technician can usually sort those out in one visit. A gas smell, scorch marks or a carbon monoxide alarm are different: stop using the equipment and deal with safety before anything else.
Safety first
If you smell gas (a rotten-egg or sulfur smell), leave the house now. Do not switch lights, appliances or the thermostat on or off, and do not use a phone inside. From outside, call the gas utility or 911. Go back in only when they tell you it is safe.
If a carbon monoxide alarm sounds, get everyone out, pets included, and call 911 from outside. Do not open the windows and wait it out. The heating system stays off until it has been inspected.
If you see scorch marks, smell burning wiring, or the breaker trips again, turn the system off at the thermostat and at the service switch, and call. Do not try another reset.
What counts as urgent
Urgent no-heat, gas-odor and breaker-trip calls are taken 24/7. Winter lows in Menlo Park sit in the 40s °F, but older homes with patchy insulation lose their heat overnight, and a household with a baby, an older person or someone unwell should not wait for morning. Call right away when:
- there is no heat at all on a cold night;
- the furnace lights, runs briefly and locks out again and again;
- you hear a loud bang at ignition or see scorching near the burners;
- water is pooling around a high-efficiency furnace.
A furnace that heats slowly, one cold room, or a noisy blower that still runs can usually wait for a same-day or regular visit.
Safe checks before the technician arrives
- Thermostat on Heat, set a few degrees above room temperature, with fresh batteries if it uses them.
- Filter: if it is grey and clogged, replace it. A blocked filter trips the high-limit switch and the furnace shuts itself down.
- The furnace door panel is pushed fully closed. A safety switch behind it keeps the furnace off when the panel is loose.
- The breaker and the service switch next to the furnace, which looks like an ordinary light switch, are on.
- One reset at most. If the furnace locks out again, leave it off.
If you have a heat pump with electric backup heat and the outdoor unit has failed, the thermostat’s emergency heat setting runs the backup alone. It costs more to run, but it can keep the house warm until the visit.
What we usually find
| What the system does | Common cause | Safe to keep trying? |
|---|---|---|
| Clicks, no flame, then locks out | Cracked igniter or an ignition control fault | No, leave it off after one reset |
| Lights, runs a few seconds, shuts off | Dirty flame sensor | No |
| Inducer motor runs, burners never light | Pressure switch, blocked vent or clogged condensate line | No |
| Burners cycle on and off, warm air is weak | Clogged filter or closed vents tripping the limit switch | Yes, after a filter change |
| Blower runs, air stays cold | Gas supply, ignition or control board fault | No |
| Heat pump blows cool air, outdoor coil iced over | Defrost problem or outdoor fan fault | Use emergency heat if you have it |
In older ranch homes and bungalows the furnace often sits in a hall closet, the garage or the attic. Newer rebuilds and heat-pump retrofits fail differently, with sensors, defrost controls and boards that show fault codes. Telling us which kind you have saves time.
How a 24/7 call runs
- Triage on the phone. We ask what the system is doing, whether there is any gas smell, alarm or burning, and what heats the house: a gas furnace, a heat pump or both.
- Access. Tell us where the equipment is and anything about the gate, parking or attic hatch. In Sharon Heights, Linfield Oaks or West Menlo Park, a note about the driveway or side path helps at night.
- Safety checks before restart. The technician looks at gas, venting and electrical concerns before running the system again.
- The repair, or a plan. Many fixes happen on the spot. If a part is not on hand, you get a straight answer on whether the system can run safely in the meantime, and the next-day options.
- In writing. After-hours charges are listed apart from any follow-up work; ask about them when you call. If the furnace is near the end of its life, the repair-or-replace path comes in writing too, so nobody has to decide at midnight.
If the heat stays off overnight
Plug space heaters straight into a wall outlet, not an extension cord, keep them about three feet from anything that can burn, and switch them off when you leave the room or go to sleep. Never heat the house with a gas oven, a grill or a generator. Close the doors to unused rooms and keep everyone together in the warmest one.
More on urgent calls: emergency heating repair and our emergency HVAC tips. Planned work: furnace repair and heat pump repair.