Your furnace keeps your聽family聽cozy聽during the聽frigid聽winter months, so it’s聽annoying聽when something聽is wrong. One聽routine聽complaint聽is a furnace that聽endlessly聽switches聽on and聽shuts back off聽again. This聽issue聽is聽called聽short cycling. It聽stresses聽your heating system聽and聽might聽lead to聽costly聽repairs or even聽early聽failure.
Short cycling can聽be caused by聽for聽varying聽reasons. Before you聽book聽furnace repair,聽research聽the聽likely聽causes and how to聽take care of聽the聽situation.
1.聽Filthy聽Air Filter
The HVAC filter聽traps聽airborne dust, hair and other聽debris聽that could聽wreak havoc on聽furnace. If you don’t聽replace the聽filter聽often enough, it can聽eventually be聽Filthy聽and聽reduce聽the airflow. When this聽takes place, a safety聽device聽switches聽off the furnace to聽stop聽getting too hot.聽Inspect聽the filter, and if it’s dirty,聽replace it.聽From here on out,聽change the聽filter every 30 to 90 days to聽prevent聽your furnace from short cycling.
2.聽Blocked聽Air Vents
A dirty filter isn’t the only聽thing聽that can聽reduce聽airflow and overheat your furnace. Walk around your聽residence聽and聽look聽for聽shut聽or聽obstructed聽air vents. For聽proper聽system balance and performance, keep all registers open, even in聽unused聽rooms.
3. Dirty Blower Wheel
The furnace blower聽uses聽blades that聽distribute聽air through the ductwork. If they are聽covered in dirt, the air won’t聽flow聽correctly,聽causing聽overheating and short cycling.聽Routinely聽changing聽the filter is the聽best聽way聽to聽avoid聽a dirty blower wheel. If the blades are already dirty,聽book聽furnace maintenance聽to have them cleaned.
4. Faulty Thermostat
Inspect聽your thermostat next. This is the聽brain聽of your HVAC system and聽gives the furnace instructions on聽what to do.聽Ensure聽the thermostat is聽set to聽heating mode and auto fan with the desired temperature聽shown聽on the screen. Try聽changing the聽batteries. Also, check whether the thermostat is in聽full聽sunlight or near a heat source that could聽influence聽the temperature reading. If you聽rely on聽a smart thermostat,聽visit聽the manufacturer’s site for troubleshooting聽instructions.
5.聽Soot-Covered聽Flame Sensor
The flame sensor聽switches聽off the gas valve when no burner flame聽is present. The sensor can’t聽sense聽the flame if it’s聽sooty, so the gas聽switches聽off聽sooner聽and the furnace聽turns off. Leave the聽work聽of聽fixing聽a聽faulty聽flame sensor to聽a pro聽like聽天美传媒.
6. Oversized Furnace
When it聽includes聽heating and cooling聽equipment,聽bigger聽isn’t always聽right.聽An oversized聽system聽heats up聽your聽house聽too聽rapidly,聽causing聽uncomfortable聽temperature聽changes聽and short cycling. The only way to聽take care of聽this聽situation聽is to聽do聽new聽furnace installation.
If you聽try聽the聽resolutions聽we went over聽here聽and nothing has changed, it’s time to聽contact聽the聽pros聽at聽天美传媒. We’ll聽examine聽the situation,聽pinpoint聽the cause, and聽perform聽the necessary聽repair. Our聽goal聽is to聽bring back聽indoor comfort, energy efficiency and聽reliable聽furnace performance for聽the rest of the season. And our聽work is聽backed聽by 天美传媒 Guarantee.* For more聽information聽about furnace short cycling, or to聽book聽HVAC repair,聽give us a call聽at (866) 963-7996听苍辞飞!
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*Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 天美传媒 Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.
