Why Does My House Feel Cold at 70? Common Causes and Solutions

Have you ever found yourself thinking, “Why does my house feel so cold at 70 degrees?” Of course, everyone wants to keep their homes comfortable all year round. But for some reason, the temperature just doesn’t seem to be cooperating. You might feel like you need to bundle up in extra layers even though the thermostat is set to a relatively warm temperature. If that’s the case, rest assured that you’re not alone. There are many possible reasons why your home might be feeling chilly even though the thermostat is set to 70 degrees.

One possible culprit for your chilly home is a lack of insulation. Insulation plays a critical role in maintaining a consistent temperature inside your house. If your insulation is poor or if you have insulation gaps, it’s likely that cold air is infiltrating your home and causing a temperature imbalance. Another possibility is drafty windows and doors. These are common spots where cold air can seep into your home and make it feel chillier than it should be. Lastly, your heating system might be broken or in need of repair. If you’re not keeping up with regular maintenance or if your heater is old and outdated, it might not be able to keep up with the demand for warmth in your home.

Insufficient insulation in home

One of the main reasons why a house may feel cold at a seemingly warm temperature of 70 degrees Fahrenheit is due to insufficient insulation. Insulation can be thought of as a protective barrier for your home that helps to regulate the temperature inside. Without proper insulation, heat can escape your home easily, leaving you feeling cold and uncomfortable.

Insufficient insulation can occur in a number of ways. It could be that your home was not built with enough insulation in the first place, or it could be that your insulation has become worn out and ineffective over time. In some cases, insulation may have been installed improperly, which can lead to gaps and spaces where hot air can escape.

  • One of the most effective ways to combat insufficient insulation is to add more insulation to your home. This can be done by a professional insulation contractor or by a knowledgeable homeowner with experience in DIY home improvement projects.
  • Another option is to replace old or worn out insulation with newer, more effective materials.
  • It’s also important to check for any gaps or spaces where insulation may be missing or improperly installed. These areas can be filled in with insulation or sealed with caulk to prevent heat loss.

Below is a table showing the recommended R-values for insulation in different areas of your home:

Area of Home Recommended R-Value
Attic, ceiling, roof R-49 to R-60
Exterior walls R-13 to R-21
Floors over unheated spaces R-25 to R-30
Basement walls R-11 to R-15

By ensuring that your home has the proper amount of insulation installed in all the right places, you can create a comfortable living environment that is consistently warm and cozy.

Leaks around doors and windows

One of the most common reasons why a house can feel cold, even when the thermostat is set to 70 degrees, is due to leaks around doors and windows. These leaks allow cold air to enter the house and warm air to escape, causing the temperature to drop and making your heating system work harder to keep the house warm.

  • One of the first things you should do is check for gaps or cracks around your doors and windows. You can do this by holding a piece of tissue paper near the edges and seeing if it moves, indicating a draft. Seal any gaps with weatherstripping or caulking.
  • Check your window frames for any damage or warping. This can cause gaps to form in between the frame and the window, allowing air to get in. Seal any gaps with caulking or replace the windows if necessary.
  • Another common culprit of leaks around windows is the glazing putty. This putty can crack or dry out over time, allowing air to get in. Replace any damaged or missing putty to prevent leaks.

If you have an older house, it may have single-pane windows which are not as energy-efficient as newer double-pane windows. Consider upgrading to double-pane windows to improve your home’s insulation and energy efficiency.

Finally, you can use window insulation kits to further improve your windows’ insulation. These kits are easy to install and can help keep the cold air out and the warm air in. They usually consist of plastic film that you attach to the window frame and shrink with a hairdryer.

Material Cost Ease of Installation Effectiveness
Weatherstripping Low Easy Fair
Caulking Low Easy-Moderate Good
Window insulation kit Low Easy Good
Double-pane windows High Difficult Excellent

By properly sealing any leaks around doors and windows, you can significantly improve your home’s insulation and keep your house feeling warm and cozy even on the coldest days.

Poor ventilation causing drafts

One of the most common causes of a house feeling cold at 70 degrees is poor ventilation causing drafts. Inadequate airflow in a home can lead to areas where air is stagnant and air temperature can differ from the thermostat setting. This is because the thermostat measures the temperature of the air around it, but if there are areas of the home with poor air circulation, those areas may be colder than the thermostat setting.

  • Ensure that all heating and cooling vents are open and pointed in the right direction. If they are pointed towards a wall or piece of furniture, the air may not be circulating properly.
  • Replace air filters regularly to ensure that air can flow freely throughout the house. A clogged filter can slow down the flow of air and result in poor ventilation and hot or cold spots in the home.
  • Consider using ceiling fans or portable fans in areas where air circulation is poor. By circulating the air, temperature in the house can become more consistent.

Another potential cause of poor ventilation causing drafts is air leaks. These occur when air can enter or escape through cracks or gaps in the walls, floors, or ceiling. These air leaks can cause drafts, increase energy bills, and make the home feel colder than it is.

To identify air leaks, homeowners can perform a simple test called a “blower door test.” This test involves using a fan to depressurize the house and locate areas where air is entering or escaping. Once these areas are identified, they can be sealed with caulking or weatherstripping.

Signs of poor ventilation causing drafts: Possible solutions:
Hot or cold spots in the home Ensure vents are open and pointed correctly, replace air filters regularly, use fans to circulate air
High energy bills Identify and seal air leaks with caulking or weatherstripping
Mold or mildew growth Improve ventilation by opening windows, using exhaust fans in bathrooms and kitchens, and ensuring HVAC systems are functioning properly

By addressing poor ventilation causing drafts, homeowners can create a more comfortable and energy-efficient home.

Uneven heating throughout the house

One common issue homeowners face when they notice their house feels cold at 70 degrees is uneven heating throughout the house. This can be caused by various factors such as inadequate insulation, poor ventilation, or faulty heating system. There are several ways to remedy this problem to ensure a comfortable temperature throughout the entire house.

  • Check for air leaks: Inspect your windows, doors, and walls for any air leaks. Seal any gaps or cracks to prevent cold air from entering and warm air from escaping.
  • Insulate your home: Proper insulation can help keep your home warm by trapping heat inside. Consider adding insulation to your attic, walls, and floors to retain warmth.
  • Adjust your air vents: Make sure your air vents are open and unobstructed. You may need to adjust the vents in each room to ensure an even distribution of warm air throughout the house.

It’s also important to note that uneven heating could be a sign of a bigger issue with your heating system. If you’ve tried these solutions and still experience uneven heating, it may be time to call a professional to inspect and repair your system.

To help identify any uneven heating areas, you can use a thermal imaging camera. This technology shows the temperature variations in different areas of the house and can help you target where you need to focus on heat retention.

Causes of Uneven Heating Possible Solutions
Poor insulation Add insulation to attic, walls, and floors
Air leaks Seal gaps and cracks in windows, doors, and walls
Obstructed air vents Adjust vents in each room for an even distribution of warm air
Faulty heating system Call a professional to inspect and repair the system

By addressing these causes of uneven heating, you can ensure a comfortable and evenly heated home all winter long.

Issues with HVAC System

When your house feels cold at 70 degrees, the first thing to check is your HVAC system. Here are some potential issues with your HVAC system that could be causing the problem:

  • Inadequate insulation: If your house is not properly insulated, warm air could be escaping through cracks and gaps in your walls, windows, and doors. This can make your home feel colder than it actually is. Make sure your home is properly insulated to keep warm air inside.
  • Faulty thermostat: Your thermostat could be malfunctioning, causing it to read the wrong temperature. This could lead to your HVAC system not heating your home properly. Check your thermostat and make sure it’s working correctly.
  • Clogged filter: A clogged air filter can limit the airflow in your HVAC system, causing it to work harder to heat your home. This can lead to your home feeling colder than it should. Change your air filter regularly to avoid this problem.

If none of these issues seem to be the problem, you may need to call in a professional to inspect your HVAC system and ensure it’s functioning properly.

Here are a few more potential HVAC system issues that a professional may be able to diagnose:

  • Faulty ductwork: If your home’s ductwork is damaged or poorly designed, warm air could be escaping before it reaches your living space. This can cause your home to feel cold even when your HVAC system is functioning properly.
  • Dirty coils: Dirty or damaged coils in your HVAC system can affect its ability to heat your home. This can lead to your home feeling colder than it should. A professional can clean or replace your coils to improve your HVAC system’s efficiency.
  • Old system: If your HVAC system is old and outdated, it may not be able to keep up with your home’s heating needs. Consider upgrading to a newer, more efficient system to improve your home’s comfort and reduce energy costs.
HVAC System Issue Potential Causes
Inadequate Insulation Cracks and gaps in walls, windows, and doors
Faulty Thermostat Malfunctioning thermostat
Clogged Filter Clogged air filter
Faulty Ductwork Damage or poor design of ductwork
Dirty Coils Dirty or damaged HVAC coils
Old System Outdated HVAC system

Keep in mind that regular maintenance of your HVAC system can help prevent many of these issues from occurring in the first place. Schedule annual inspections and cleanings to ensure your system is running efficiently and effectively.

Placement of thermostat in improper location

One of the most common reasons why a house feels cold at 70 degrees is due to the placement of the thermostat in an improper location. The thermostat is responsible for measuring the temperature in the room and signaling the heating system to turn on or off based on the set temperature.

If the thermostat is placed near a heat source, such as a window or a vent, it will read the temperature incorrectly and signal the heating system to turn off prematurely. This will leave the room feeling colder than the set temperature. On the other hand, if the thermostat is placed in a warmer area of the house, such as near a kitchen or a fireplace, it will signal the heating system to turn on prematurely, causing the rest of the house to feel colder than the set temperature.

Signs of improper thermostat placement

  • The temperature in one part of the house feels significantly different than the rest of the house
  • The heating system turns on and off frequently, causing fluctuations in temperature
  • The thermostat is located near a heat source, such as a vent or a window

How to fix improper thermostat placement

If you suspect that your thermostat is improperly placed, there are a few solutions that you can try. Firstly, move the thermostat to a more central location in the house, away from heat sources or drafty areas. This will give it a more accurate reading of the overall temperature in the house.

If moving the thermostat is not possible, you can also invest in a wireless thermostat that can be placed in a better location. These systems often come with sensors that can be placed in different parts of the house, allowing for a more accurate reading of the temperature throughout the entire space.


Proper thermostat placement is crucial in maintaining a comfortable temperature in the home. If you are experiencing issues with your heating system or feel that your home is consistently cold, it may be time to assess the placement of your thermostat and make adjustments as necessary.

Pros Cons
Easy fix by relocating the thermostat May require professional assistance
Investing in a wireless thermostat provides more accuracy Wireless thermostats can be more expensive

By taking the time to properly position your thermostat, you can ensure that your home stays warm and comfortable throughout the colder months.

Lack of Proper Weatherstripping

When it comes to keeping the cold air out and the warm air in, proper weatherstripping is crucial. Weatherstripping involves sealing up any gaps or cracks around doors and windows where air can leak in or out. Without proper weatherstripping, cold air can easily seep into your home, making it feel much colder than it actually is. Here are a few reasons why you may be experiencing a lack of proper weatherstripping in your home:

  • Old age: Over time, weatherstripping can deteriorate and become less effective at sealing gaps and cracks. If your weatherstripping is old, it may not be doing its job properly.
  • Poor installation: If your weatherstripping was not installed correctly in the first place, it may not be able to effectively prevent cold air from entering your home.
  • Wear and tear: If your doors and windows are frequently opened and closed, the weatherstripping can wear down and lose its effectiveness.

If you suspect that your home is not properly weatherstripped, it is important to take action. Begin by inspecting all of the doors and windows in your home, looking for any gaps or cracks where cold air may be entering. You can use a candle or incense stick to check for drafts and air leaks. If you find any gaps or cracks, seal them up with weatherstripping or caulking. It may also be useful to invest in new weatherstripping if your current weatherstripping is worn down or ineffective.

Weatherstripping Material Pros Cons
Vinyl Easy to install and maintain, affordable May not last as long as other materials
Metal (aluminum, bronze, or stainless steel) Durable and long-lasting, effective at sealing gaps and cracks May be more difficult to install, more expensive than other materials
Foam Easy to install, can be cut to fit any size gap or crack May not be as durable as other materials, may deteriorate over time

If you are unsure about how to properly weatherstrip your home, consider consulting with a professional. A qualified contractor or handyman can assess your home’s needs and provide you with recommendations on the best weatherstripping materials and installation methods for your specific situation.

Effects of humidity on perceived temperature

Humidity is the amount of water vapor present in the air. It can affect how we feel the temperature in our homes. Here are some of the effects of humidity on perceived temperature:

  • High humidity can make you feel hotter: When there is a lot of moisture in the air, it can be more difficult for sweat to evaporate from our skin. This makes it harder for our bodies to cool down and can make us feel much hotter than the actual temperature in the room. Additionally, high humidity can cause humidity-related health issues such as dehydration, heat exhaustion and heat stroke.
  • Low humidity can make you feel colder: On the other hand, when the air is dry, it can make us feel colder than the actual temperature in the room. This is because dry air can draw moisture from our skin, leaving us feeling chilly and uncomfortable. Further low humidity can cause other health effects such as dry skin, respiratory problems, and even lead to more frequent viral infections.

When the humidity levels are just right, it can create a comfortable environment with a perceived temperature that is in line with the thermostat setting. According to the EPA, the ideal humidity range for indoor spaces is between 30-60%. To achieve this range, you can use a dehumidifier to reduce excess moisture or a humidifier to add moisture to the air in your home.

Here is a chart that shows the perceived temperature at different humidity levels and temperatures:

Humidity 70°F 75°F 80°F
20% 67°F 70°F 73°F
30% 68°F 71°F 74°F
40% 69°F 72°F 75°F
50% 70°F 73°F 76°F
60% 71°F 74°F 77°F
70% 72°F 75°F 78°F

As you can see, a comfortable perceived temperature can be achieved at different humidity levels and temperatures. Understanding the effects of humidity can help you create a more comfortable and healthy indoor environment.

Influence of Clothing and Personal Factors on Temperature Perception

Did you ever wonder why some people feel cold at 70 degrees Fahrenheit while others feel perfectly comfortable? It turns out that clothing and personal factors play a huge role in our temperature perception.

Here are some of the ways in which these factors affect our body temperature:

  • Clothing insulation: Different types of clothing have different levels of insulation, which affects how much heat is trapped against the skin. For example, a thick sweater will keep you warmer than a thin t-shirt.
  • Clothing coverage: Exposed body parts, such as your head, hands, and feet, lose heat more quickly than covered parts. This is why wearing a hat, gloves, and warm socks can make a big difference in how warm you feel.
  • Body composition: Individuals with more body fat tend to feel warmer than those with less because fat acts as insulation. Similarly, people with more muscle mass may feel colder because muscle generates more heat than fat.

To give you an idea of how clothing affects our body temperature, here’s a chart that shows the thermal insulation of different clothing materials:

Clothing Material Thermal Insulation (clo units)
Wool 1.7-2.0
Synthetic fleece 0.9-1.7
Down feathers 0.78-0.85
Cotton 0.1-0.3

As you can see, wool has the highest insulation value, followed by synthetic fleece and down feathers. Cotton, on the other hand, provides very little insulation.

Personal factors, such as age, sex, and health, can also affect our temperature perception. For example, women tend to feel colder than men at the same temperature because they have less muscle mass and more fat. Older people also tend to feel colder because their metabolism slows down, reducing their body’s ability to generate heat.

So, the next time you’re feeling cold or hot, take a look at your clothing and consider your personal factors to determine whether you need to adjust your clothing or environment for optimal comfort.

Potential Health Concerns Related to Colder Indoor Temperatures

While it may seem like a minor annoyance, a house feeling cold at 70 degrees can actually have potential health concerns. Below are some of the health risks associated with colder indoor temperatures:

  • Increased risk of respiratory infections – Cold air can irritate your airways, making you more susceptible to viral respiratory infections such as the common cold, flu, and bronchitis.
  • Exacerbation of pre-existing health conditions – If you have pre-existing respiratory conditions such as asthma or COPD, cold air can exacerbate your symptoms and make it more difficult to breathe.
  • Increased risk of heart attacks – Cold temperatures can constrict blood vessels and increase blood pressure, putting extra strain on your heart. This can increase the risk of heart attacks, particularly in individuals with pre-existing heart disease.
  • Increased risk of hypothermia – While hypothermia is typically associated with prolonged exposure to cold outdoor temperatures, it can also occur indoors if the temperature is too low.

In addition to these concerns, colder indoor temperatures can also affect your sleep quality and make it more difficult to fall and stay asleep. This is because your body temperature naturally drops when you sleep, so if the ambient temperature is too low, it can disrupt this process.

If you’re experiencing cold indoor temperatures, it’s important to address the issue to prevent these potential health concerns. Consider implementing measures such as insulating your home, using space heaters or programmable thermostats, or investing in warm blankets and clothing to stay comfortable.

Potential Health Concerns Preventative Measures
Respiratory infections – Wash your hands regularly to prevent the spread of illness
– Invest in a good air purifier
– Consider using a humidifier to keep airways moist
Exacerbation of pre-existing health conditions – Consult with your doctor about adjusting medication
– Stay on top of regular check-ups and treatments
– Use a portable oxygen concentrator if necessary
Increased risk of heart attacks – Take steps to lower blood pressure (regular exercise, healthy diet, stress-reducing techniques)
– Stay warm by wearing layers, using blankets, or investing in a space heater
Increased risk of hypothermia – Keep your home at a comfortable temperature (between 68-72 degrees)
– Dress warmly if you’re feeling cold
– Use a space heater or electric blanket in extreme cases

By staying aware of these potential health concerns and taking preventative measures to stay warm and healthy, you can avoid the negative effects of cold indoor temperatures on your health and well-being.

Why does my house feel cold at 70 – FAQs

1. Is it normal to feel cold at 70 degrees inside my house?

Yes, sometimes it is normal to feel cold at 70 degrees inside your house. The reason for this can be poor insulation, drafty windows or doors, or inadequate heating system.

2. What are the most common reasons my house feels cold at 70 degrees?

The most common reasons for your house feeling cold at 70 degrees include poor insulation, air leaks through windows and doors, inadequate heating system, and insufficient ductwork.

3. Can my thermostat be reading the wrong temperature?

Yes, your thermostat can read the wrong temperature due to its placement in your home, dust buildup within the internal components, or a malfunctioning thermometer.

4. How can I check if my house is well insulated?

You can check if your house is well insulated by looking for gaps or cracks in walls, ceilings, or floors, checking for drafts near windows and doors, and ensuring that your attic has enough insulation.

5. What are some DIY solutions for colder homes?

Some DIY solutions for colder homes include adding weatherstripping to doors and windows, covering drafty windows with plastic, sealing gaps or cracks with caulking or spray foam, and adding insulating window film.

6. When should I call a professional?

You should call a professional if your heating system is not working correctly, if you notice moisture or mold on walls or ceilings, or if you have experienced chronic respiratory issues.

7. Can changing my furnace filter help?

Yes, changing your furnace filter can help increase airflow in your home, improve air quality and remove any dust or debris that may be clogging your filtration system.

Closing Thoughts

Thank you for reading this article on why your house may feel cold at 70 degrees. We hope these FAQs were helpful and shed some light on the reasons for your home’s temperature issues. Remember to check your insulation, windows, and doors for air leaks, and add some DIY solutions to make your home warmer. If you’re still having issues, don’t hesitate to call a professional. Stay warm, and we hope to see you soon!