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Why doesn't my home get to temperature?

As winter grips our neighborhoods, a well-functioning furnace becomes more than just a convenience; it's a necessity. So, when your home feels chilly even with the furnace running, it's a cause for concern. At CMC Plumbing, Heating, and Cooling, we understand how crucial a comfortable home is, especially during the colder months. That's why we've compiled a list of common reasons why your furnace might not be getting to the right temperature and how you can address them.

Working from home can be tough when your home doesn't get to temperature.

1. Clogged Air Filters

One of the simplest yet most overlooked issues is a clogged air filter. Air filters trap dust, debris, and allergens, ensuring clean air circulates through your home. However, when they become clogged, it restricts airflow, reducing your furnace's efficiency. We recommend checking your filters monthly and replacing them as needed as well as scheduling a yearly furnace tune-up.

2. Thermostat Issues

Sometimes the problem lies not with the furnace, but with the thermostat. Incorrect settings, a malfunctioning thermostat, or a device that's not communicating correctly with the furnace can all lead to heating issues. Ensure your thermostat is set to 'heat' and the desired temperature. If problems persist, it might be time to call a professional.

3. Ductwork Leaks

Leaking or poorly insulated ducts can significantly reduce your furnace's ability to heat your home effectively. These leaks allow warm air to escape before it reaches its destination, making your furnace work harder and less efficiently. Regular ductwork inspections can prevent these issues.

4. Furnace Size

If your furnace is too small for your home, it will struggle to maintain a comfortable temperature. Similarly, an oversized furnace can cycle on and off too frequently, causing wear and tear and inefficient heating. Professional sizing before installation is crucial to ensure efficient heating.

5. Mechanical Wear and Tear

Like any mechanical system, furnaces suffer wear and tear. Components such as belts, bearings, and motors can wear out over time, affecting performance. Regular maintenance can help identify and address these issues before they lead to more significant problems.

6. Blocked Vents and Grilles

Ensure all vents and grilles in your home are open and unobstructed. Furniture, curtains, or rugs blocking these can restrict airflow, reducing the furnace's ability to heat your home evenly.

7. Ignition or Pilot Light Problems

For gas furnaces, issues with the ignition system or pilot light can prevent the furnace from producing heat. These are often technical issues that require professional diagnosis and repair.

8. Dirty or Malfunctioning Burners

Dirty burners can hinder the furnace's ability to heat properly. Regular cleaning and maintenance are essential for efficient operation. If the burners are malfunctioning, it's time to call a technician.


While some issues like changing filters or unblocking vents can be handled independently, others require professional attention. At CMC Plumbing, Heating, and Cooling, we pride ourselves on providing top-notch service to ensure your home stays warm and comfortable all winter long. Don't let a malfunctioning furnace disrupt your comfort. Contact us for a thorough inspection and expert repair services.

About CMC Plumbing, Heating, and Cooling: [Brief description of your company, its experience, and commitment to customer service]

Disclaimer: This blog provides general information and discussions about home maintenance and related subjects. The information provided in this blog, and in any linked materials, is not intended and should not be construed as professional advice. If the reader or any other person has a maintenance issue, they should consult with a professional.


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