Poor insulation lets heat escape from certain rooms. Vents might be closed, blocked, or improperly sized. Ductwork could be leaking or poorly designed. Thermostat placement may favor other areas. Windows and doors might be drafty or unsealed. Heating system may not be powerful enough for the whole house. Rooms farthest from the furnace often get less airflow.

Thermostat might be miscalibrated or placed near a heat source. Dirty air filter can cause overheating and shutdowns. Flame sensor may be dirty or malfunctioning. Furnace could be oversized for your home. Airflow restrictions might trigger safety shut-offs. Faulty limit switch or control board may cause short cycling. Low refrigerant or gas pressure can disrupt normal operation.

Every 1–3 months for standard filters. Monthly if you have pets or allergies. Check monthly and replace it when dirty. High-efficiency filters may last up to 6–12 months. Always follow your furnace manufacturer’s guidelines.

Once a year is recommended for optimal performance. Schedule maintenance before the heating season starts.Annual service helps prevent breakdowns and improves efficiency. Filters should be checked monthly and replaced as needed. Older furnaces may benefit from more frequent inspections.

Water heater might be turned off or malfunctioning. Pilot light or electric heating element could have failed. Thermostat on the water heater may be set too low. Tripped circuit breaker or blown fuse could cut power. Sediment buildup might be blocking heat transfer. Gas supply or valve could be interrupted. Pipes may be frozen or water flow restricted.

Buildup of food, grease, or hair is decomposing. Dry P-trap allows sewer gases to escape. Mold or bacteria may be growing in the pipes. Clogged or slow drains trap smelly debris. Garbage disposal might have rotting residue. Vent pipe blockage can push odors back inside. Sewer line issues may be sending gases into your home.

Flapper valve may be worn or not sealing properly. Chain could be tangled or too short, keeping the flapper open. Fill valve might be malfunctioning or misadjusted. Float may be set too high, causing constant overflow. Overflow tube could be cracked or misaligned. Debris or mineral buildup may prevent proper sealing. Flush handle might be stuck in the down position.

Clogged aerators or faucet screens restrict flow. Pipes may be corroded or partially blocked. Water valves might not be fully open. Pressure regulator could be faulty or misadjusted. Leaks in the plumbing system reduce pressure. Municipal supply may be experiencing issues. Shared lines can cause drops when multiple fixtures run.

Once a year is ideal for most water heaters. Flush the tank annually to remove sediment buildup. Inspect the anode rod every 2–3 years. Check temperature settings and pressure relief valve yearly. Tankless models benefit from annual descaling.