Whether the forecast calls for a heat wave or a cold snap, you know you’ll be comfortable, no matter the weather, because you have central heating and air conditioning, and you’ve been diligent about maintaining the system. However, even a well-maintained HVAC system isn’t infallible; in other words, the system can malfunction and HVAC repair may be necessary at some point.

How do you know when your heating, ventilation, and air conditioning system is out of whack? From soaring energy bills to strange odors, here’s a look at some of the telltale warning signs that you should schedule an appointment with an HVAC repair company.

Unusually High Energy Bills

Does it seem like your utility bills are higher than usual? If so, an issue with your HVAC system could be to blame. You should be able to tell, with relative accuracy, how much it will cost to heat your home from year to year by assessing your previous energy bills. The current year’s energy expenditures should be pretty similar to the previous year’s. Of course, if it’s been unusually hot or cold and your HVAC system has been running more than usual, you’ll see an uptick in your utility bills. Additionally, the overall cost of energy has increased globally, which will certainly impact your heating and cooling costs. That said, after taking these factors into account, if there’s been a sudden, substantial, and unexplained increase in your utility expenses, you should get in touch with an HVAC repair technician.

If your heating and cooling system is malfunctioning, it will need to work harder to maintain your home’s comfort. The harder the system has to work, the more energy it has to consume, and increased energy consumption translates to higher utility bills. So, if you’re spending a lot more on heating and cooling your house, you should definitely schedule an appointment with an HVAC repair service.

Poor Air Flow

Does it seem like the cooled or heated air isn’t blowing out of your vents as powerfully as it usually does? Poor airflow is a sign of a problem that could be the result of a variety of issues with an HVAC system; a clogged air filter, a blockage in the ductwork, or a faulty fan, for example. Put in a call to a reputable HVAC repair company. An experienced technician will perform a thorough inspection and will get to the root of the problem.

Strange Sounds

While it’s true that an HVAC system will always make some degree of noise even when it’s functioning properly; typically, the sound is minimal, such as a slight hum or whir, and it fades into the background. That said, if your central heating, ventilation, and air conditioning system is making strange noises that you’ve never heard before – banging, rattling, or buzzing, for example – that’s definitely a cause for concern. Clogged air ducts, loose belts, and faulty electrical wires are just some of the issues that can cause an HVAC system to generate strange noises. No matter what type of sound you’re hearing, if it seems unusual, get in touch with an HVAC repair professional.

Peculiar Odors

When it’s functioning properly, an HVAC system does not emit any odors. If something smells “off” in your house, and the smell seems to be coming out of your air vents, chances are something is wrong with your heating, ventilation, and air conditioning system. While any strange odor is a cause for concern, there are some distinctive scents that HVAC systems commonly emit when they aren’t working properly. These scents include:

· An electrical odor. An electrical scent could indicate that an electrical component within the system is malfunctioning or that the system is overheating.

· A burning smell. Usually, a burning scent is indicative of a faulty motor.

· A musty scent. If moisture is building up within your HVAC system, mold and mildew can proliferate. The spores of these fungi produce a musty odor, and that odor will spread throughout your house. In addition to the smell, you may also notice increased allergy-like symptoms, irritation to the eyes, nose, throat, and skin, and a general feeling of malaise.

If you notice any unusual odor coming from your heating and cooling system, scheduling an appointment with an HVAC repair company is an absolute must.

Fickle Temperatures

Does it seem like no matter how low you set the AC or how high you set the heat, it just never feels comfortable in your house? If so, you’re definitely going to want to call an HVAC repair company. When it’s working properly, an HVAC system should be able to produce consistent temperatures and maintain the comfort levels in your home or business. There are several issues that may be causing the inconsistencies you’re experiencing, such as a faulty compressor or low refrigerant levels. No matter the cause, a company that specializes in HVAC repair will be able to diagnose and repair the problem.