3 Reasons Why Your Heater is Blowing Cold Air

There are many reasons for your heater to blow cold air. Here are just a few of the most common ones.

There are any of a number of reasons why your heater may start blowing out cold air. Keep in mind that cold air, when you expect warm air, is not a cause for panic. There is a good chance that nothing too bad is going on. Here are three of the most common reasons your heater can start blowing cold air.

 Kansas City, KS heating_services_7201. Your Thermostat

One of the most common reasons for your heater to blow cold air is the thermostat. No matter what type of HVAC system provides your heat, you should always check your thermostat first for almost any issue.

Make sure you allow for a few minutes to pass after you turn on your air. Keep in mind that often, warm air does not come out immediately after you turn it on.

Check the temperature – It is possible that you do not have the temperature set to higher than the temperature in your Kansas City home. In other words, simply turn up the heat. If that solves your problem, you are all set.

Check the thermostat batteries – Not all thermostats use batteries, but for those that do, it is important to make sure they are fresh. Dead or dying batteries can cause poor performance from your thermostat. That in turn can become your heater blowing cold air when it should not.

Check the fan switch – Most thermostats have a fan switch or setting. Usually you can set it to “off,” “on,” or “auto.” If it is on, it may cause the furnace fan to blow continually despite what temperature the thermostat is set to.

Check the temperature around the thermostat – The location the thermostat calls home has a lot to do with how the thermostat reacts. In most cases, the thermostat reads the temperature immediately around it.

So if it is in a hot room, it uses the temperature of that room to regulate the rest of the home. This can lead to uneven air distribution, which can mean cold air blowing when you are expecting warm air.

Sometimes, you may have an outright faulty thermostat. It may need recalibration or replacement. With all that said, it is important that you give your thermostat some consideration. If you find that your thermostat is the cause of your cold air issue, you can feel relieved that it is not a larger issue.

2. Your Electrical Panel

No matter what kind of HVAC system you have, the odds are that it requires electricity. Something as simple as a tripped breaker inside your electrical panel can cause you many issues, including your heater blowing cold air.

A tripped circuit breaker can cause your furnace to not turn on at all. It can also cause your pilot light to not turn on. In either case, your heater may start blowing cold air for these reasons.

Check your electrical panel – Look for a tripped breaker. Resetting it may fix your issue. Here are a few things that can cause a breaker to trip:

  • Overloading the circuit by running too many things
  • Shorting the circuit from faulty wiring
  • Other faults such as grounding faults and damaged wire

Consider that if you have your heater on, then plug in an appliance, and the heater starts blowing cold air, then you likely overloaded your circuit, tripped the breaker, and now only the fan is blowing.

If you find that your HVAC system repeatedly causes a tripped breaker, then you should not reset it. Instead, you should call a professional to come take a look.

Another cause for a tripped breaker is your HVAC system getting far too hot. This can also happen for many reasons. A lot of those reasons have to do with maintenance and upkeep.

For example, dirty air filters and coils can cause your HVAC system to heat up more than it should. This in turn will cause your breaker to trip.

In the end, you may have an electrical issue and not an HVAC issue at all. Sometimes it is hard to tell, but a Kansas City professional should have the ability to tell you if the HVAC system is causing electrical problems or if electrical problems are affecting your HVAC system.

 Kansas City, KS heater_repair_service_4803. Ductwork in Disrepair

It is not always easy to tell if you have problems with your ducts. However, a heater blowing cold air is sometimes just such a sign.

Remember that when you want warm air, it starts at your furnace but then must travel through your ducts. If the air that finally comes out is weak or cool, then there’s a possibility you have a broken duct somewhere.

Duct wear and tear can come from various sources. In general, just using ducts as intended will eventually lead to some degradation. You are sending air of various temperatures through them all the time. That creates strains and stresses.

Outside temperatures – It is not just the air going through the ducts that can affect them. It is also the temperature of the environment they are in. Cold weather, hot weather, location, are all things that add stress and strain to ducts, especially over the course of years. Sometimes, simply adding proper insulation can protect you from this happening.

Damaged ducts – If your ducts have even small openings such as cracks, they may pick up cooler air that mixes with your warm air. That is what you feel coming from your vents. If the ducts have heavy damage, they may lose the warm air altogether.

In some cases, that warm air can escape into attics, walls, or basements. Damage can occur for any number of reasons.

  • The age of your duct
  • The material they consist of
  • Outside influences

Your ducts are an important part of your HVAC system. You should always take steps to make sure they are healthy and functioning as they should. Speak to a professional about it if you are unsure.

There Are Many More Reasons

While these three things represent common reasons for your heater to blow cold air, there are many, many more possibilities. Some issues can be unique to your particular HVAC system. A lack of fuel can represent another reason for cold air.

The most important thing to remember is that your HVAC system requires care and maintenance. In addition, you should always use the services of a professional HVAC service if you have any problems.

You don’t want just anyone looking at your HVAC system. If you want quality HVAC services in Kansas City, KS, then call KB Complete Plumbing Heating and Cooling Inc. at 913-722-6835.