Steamy Temps Bring Summer Window Woes

This past week’s brutal heat and sky-high humidity had many of us hiding indoors, glued to the AC. But while we were doing our best to stay cool, our windows may have been trying to tell us something. If you’ve noticed water droplets forming on the inside of your windows—or a foggy film that just won’t quit—you’re dealing with summer window condensation. And no, it’s not just a minor annoyance. It can be a sign of bigger problems brewing in your home.

So, what’s going on here?

Condensation forms when warm, humid air hits a cooler surface. In the winter, that’s usually on the inside of your windows. But in the summer, it’s the reverse. Your air conditioner is keeping your indoor air refreshingly cool, while the air outside is heavy and hot. When those two climates meet, like when humid air seeps in and touches your chilly window glass, moisture condenses, and you get that telltale fog or water buildup.

In reality, a little condensation now and then isn’t the end of the world. But if you’re noticing it regularly, especially during extreme heat and humidity, it can point to problems with ventilation, insulation, or moisture control in your home.

In our Connecticut climate, summer humidity is no joke. Add in long showers, laundry, cooking, and even houseplants, and you’ve got a recipe for excess indoor moisture. If your home doesn’t have proper airflow or if your windows aren’t up to the job, that moisture sticks around, and your windows become the battleground where it all shows up.

And here’s the thing: if you ignore it, condensation can go from cosmetic to costly. Excess moisture creates the perfect environment for mold and mildew, which can trigger allergies, irritate lungs, and leave a lingering musty smell. Over time, moisture can also cause wood window frames to warp or rot, damage seals, and reduce your windows’ effectiveness. Even if it’s just clouding your view, you’re still losing out on natural light and visibility.

So, what can you do?

Start with airflow. Use exhaust fans in bathrooms and kitchens, and don’t be afraid to crack a window when the outdoor air is drier. A dehumidifier can also make a significant difference, especially in areas prone to moisture, such as basements.

Next, take a hard look at your windows. If they’re single-pane or older double-pane units, they might not be insulating properly. Modern double- or triple-pane windows are designed to prevent this kind of condensation by minimizing temperature swings on the glass surface.

And don’t forget the little things like sealing air leaks around windows and doors, opening blinds or drapes during the day to improve air circulation, and keeping indoor plant collections in check. Every small step helps.

Condensation might seem like a minor inconvenience, but it’s often a symptom of bigger issues in your home’s comfort and energy efficiency. Take care of it now, and your windows and your wallet will thank you later.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Got a home issue you’d like Bob to tackle? Email info@odonnellbros.com with the subject line “Ask the Pro.” To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Combat Summer Humidity in the Home

After a lot of rain followed by heat and humidity, it’s no surprise if your house starts to feel a little swampy. Summer weather may be great for your garden, but it can spell trouble for your home if humidity isn’t kept in check.

While we can’t control what’s happening outside, the real concern is what that sticky air is doing inside, particularly in basements, attics, and anywhere else moisture loves to settle. That moisture can lead to mold, mildew, musty smells, and even damage to your home’s structure over time.

A lot of folks assume their air conditioner has them covered, but the truth is, while it cools the air, its dehumidifying powers are more of a side effect than a solution. Air conditioners recycle and chill indoor air, which helps a little with moisture, but if humidity is high, they’ll struggle to keep your home comfortable and dry.

That’s where a dehumidifier comes in. Unlike an AC unit, a dehumidifier’s sole job is to pull excess moisture from the air and collect it in a tank. If you’ve ever felt that damp, clammy vibe in your basement, you’re not imagining things, and a dehumidifier can make a big difference. In fact, starting in the basement is a smart move, since that’s usually the most humid part of the house.

Want to know how humid your house really is? A $5 humidity gauge from the hardware store will tell you. Ideally, your indoor humidity should be under 50%. If it’s higher, consider running a dehumidifier in the most-used parts of your home, especially on those muggy days when it feels like you’re living inside a wet sponge.

Bonus: a dehumidifier doesn’t just make the air feel more comfortable. It also helps prevent mold growth, eliminates musty odors, and keeps old pipes from sweating. And here’s a neat trick, reuse the water collected in the tank to hydrate your plants. They won’t complain.

Dehumidifiers come in different sizes, usually 25, 30, or 40-pint models. A 25-pint unit generally works well for a 1,000-square-foot space, making it a good fit for most basements or mid-sized rooms.

Worried about the energy bill? Don’t be. Dehumidifiers typically use about half the electricity of an AC unit. To save energy, only run the unit when humidity spikes (above 50%), and keep windows and doors closed while it’s on. Just don’t run it all night in the bedroom - they can dry out the air a bit too much while you sleep.

And don’t forget maintenance. Dehumidifiers can get clogged with dust and debris, which blocks airflow and could even spread mold if left unchecked. A quick wipe-down of the filter with a damp cloth and a spritz of all-purpose cleaner will keep things running smoothly.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Keep Humidity Away From Your Home This Summer

With a very hot start to the week followed by cooler temperatures, it probably won’t be long before summer weather is in full swing.

With New England's heat comes humidity, which is something every homeowner needs to keep in check. While we can’t control the weather outside, moisture in the house can be a major problem, contributing to mold, mildew, and overall dampness, especially in the attic and basement.

A lot of homeowners combat humidity by using air conditioners in their houses, and while they can reduce the moisture in the air to some degree, this is by no means their primary function. An air conditioner works by sucking the air from your home, cooling it, and blowing it back into the house. That process does reduce the humidity slightly, but pairing your air conditioner with a dehumidifier is the best way to cool down your home so you can sleep more comfortably at night.

A dehumidifier works by pulling the moisture out of the air and storing the excess water in a holding tank. Many people keep dehumidifiers in their basements all year long to control the dampness that can often be felt in these underground areas. This is a great idea because controlling the humidity in the part of your home that holds the most water will very likely help to regulate the rest of the house. 

One way to know if your house is holding a lot of moisture is to purchase a simple five-dollar humidity gauge from the local hardware store. Ideally, you want the humidity to be under 50 percent. If it’s higher, you might want to consider using a dehumidifier in the main part of your home, especially on hot summer days and in areas where you spend the most time. 

In addition to cooling the air and decreasing moisture, running a dehumidifier during the hottest parts of the hottest days can also prevent mold and mildew growth, eliminate musty odors in the home, and prevent old pipes from sweating. Plus, you can use the water collected in the tank to give your plants a good drink.

Dehumidifiers generally run on about half the energy of an air conditioning unit, so as long as you don’t run them all day, using one shouldn’t affect your energy bill. Just be sure to keep windows and doors closed when you run your unit, and only switch the power on during the most humid time of the day, or when the air is above 50 percent humidity.

Be aware that dehumidifiers by nature are drying, so try not to run them while you’re occupying the room over a long period of time, like when you’re sleeping at night. Also, be careful about using dehumidifiers in conjunction with an attic fan. I see people do this all the time and they unintentionally throw the excess moisture from their home or basement up into their attic, where it has no place to escape.

If you’re thinking that a dehumidifier might be a good solution for you, they come in different sizes and can be used for residential or commercial purposes. Generally, a unit will come in 25, 30, and 40-pint models, and on average a 25-pint unit will be sufficient to operate in a 1,000-square-foot area. 

Finally, if you have a dehumidifier, please be sure to keep the filter clean. Dust, dirt, and debris can get caught in the filter, preventing air from flowing freely and potentially circulating mold spores throughout the home. A simple wipe-down with a damp cloth and spray bottle filled with a cleaning solution will do the trick to keep you breathing freely and ensure a longer life for your appliance.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.