You’re not alone if you noticed some hot rooms in certain areas of the home this summer. These temperature differences may point to underlying problems, from poor sealing and insulation to old siding. With upgrades from weatherstripping to window replacement, you can improve your home energy efficiency and make summer more bearable.

A report by Nature found that temperatures in historically Black neighborhoods were seven to 10 degrees Fahrenheit higher than affluent areas with mostly white residents, creating “heat islands.” While the planet is facing an overheating crisis, Black homes in historically Black neighborhoods may need more energy-protective work starting now.

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South- and west-facing windows can cause excessive heat. You may be experiencing solar heat gain if it gets hotter in the afternoon.

Your HVAC system may have airflow issues. If you haven’t had regular HVAC maintenance, there may be blocked vents or poorly designed ductwork. When automatic air vent leaking happens, it can trap air pockets that lock hot air into the same cleared zones, causing room overheating.

Consider where your HVAC system is located. Even if it’s running as it should, the air won’t flow through the home if it’s:

• Blocked with furniture
• Positioned too high or too low
• Disconnected ducts in hard-to-reach areas

That blocked air traffic will affect how your home cools off, creating colder and hotter air pockets. If this has become an ongoing problem linked to your appliance, check into modern heating and cooling systems such as:

• Heat pumps
• Ductless mini-splits
• Smart HVAC Systems

If you’re among the many Black American families living in or considering consolidating family into a multi-generational home, a ductless mini-split may be ideal. This modern heating and cooling system features a main hub that branches into separate cooling units on different floors or rooms.

Installing one can:

• Satisfy the different comfort levels of family members.
• Skip arguments over the thermostat.
• Create acoustic privacy- no ducts, no sound travel.

If your home feels hot all day long, it’s likely due to a lack of air sealing and insulation. When the heat pockets are mostly in the afternoon, it may be due to solar heat gain or specific window issues.

The Insulation Institute reports that 89% of American single-family homes don’t have enough insulation. Your attic insulation and HVAC ductwork can make it hotter upstairs than downstairs.

Weak airflow from an operating HVAC is usually due to maintenance issues, clogged filters, or reaching the end of its lifespan.

Hot rooms and levels can signal that your home’s protection from extreme heat and other weather elements is insufficient. Living in a home or neighborhood more susceptible to heat- and wind-related weather patterns can make illness more common during heatwaves. It may be time for home improvements before the problem worsens or becomes more expensive.

A lack of air circulation can create excessive humidity. It’s the first step in creating a mold-friendly environment. A home with mold is a health hazard and affects your overall home value.

Elevate home decor and improve temperature protection with window treatments including:

• Curtains
• Fabric shades
• Exterior shading like awnings and shutters
• UV window film

However, if your windows are damaged or old single-pane ones, replacing them with double- and triple-pane options can be a solution for comfort, lower bills, and reduced fading on floors or furniture.

If it’s been over 10 years, you may need new siding. This upgrade can reduce heat transfer through exterior walls and encourage more consistent indoor temperatures. Check Best Buy Windows & Siding for the right fit for these upgrades.

Most of your home’s heat loss can come through its exterior walls. About 35% of heat escapes from uninsulated or poorly insulated cavities on this thermal boundary, according to a 2022 study by Saied, Maalouf, Bejat et.al.

Approximately 25% of warm air rises naturally due to what’s called the stack effect, and it escapes out of:

• Attic insulation
• Gaps
• Unsealed hatches

Windows and doors are the next common area for heat loss when you have single-pane glass and degraded or a lack of weatherstripping that allows cold drafts inside and warm air to rush out.

The next area for heat loss is floors and basements. Your uninsulated concrete slabs and cold crawl spaces naturally draw warm air away from your lower levels.

How hot you keep your house can affect the health of people and your pets’ comfort to a point. It can also affect the home’s structural protection.

Safety and health limits ideally go up to 80° Fahrenheit, which is warm and safe when the air is moving. Temperatures between 81 and 85° F can start to affect your sleep quality and comfort.

You risk heat exhaustion, especially for vulnerable residents like older adults, children, and pets, when the heat goes above 85° F. At 90° Fahrenheit and higher,  there’s a serious risk of heat stroke with extended exposure.

In addition to human health concerns, pets and plants thrive at indoor temperatures below 78° Fahrenheit, and you should never leave your pet in an unventilated home at 85° or higher.

You should consider humidity and mold, as indoor temperatures below 85° Fahrenheit can stop mold from growing.

If you suffered through uneven hot rooms this summer, get off to a good start this autumn by making the upgrades now so you don’t have the reverse problem in winter. After all, poor insulation can cause excessive chill too.

Before jumping ahead, find the main issue, which may be weatherstripping, a lack of window treatments, or degrading insulation that needs replacement. If your HVAC system isn’t cooling your home, replace it with a more modern system and be mindful of location so cold air can flow through appropriately. New siding improves your curb appeal and Indoor comfort, along with some double-pane window replacements.

Now that you understand some of the reasons for uneven temperatures, learn more home Improvement practices from other articles on our website.

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