Why Indoor Air Quality Often Declines During the Winter

December 17, 2025

Winter is a season when homes are sealed tightly to keep warm air inside and heating costs under control. While this approach improves comfort and efficiency, it can also create indoor air quality challenges that are easy to overlook. With windows closed, ventilation reduced, and heating systems running more frequently, airborne pollutants and moisture can become trapped inside the home. Understanding why indoor air quality often declines during the winter helps homeowners make smarter decisions about airflow, ventilation, and HVAC performance. Addressing these issues can lead to a healthier, more comfortable indoor environment throughout the colder months. Homes Become More Airtight in Cold Weather As temperatures drop, homeowners naturally focus on preventing heat loss. Weather-stripping, insulation upgrades, and sealed windows all play a role in improving energy efficiency. While these steps are beneficial, they also reduce the amount of fresh air entering the home. When a house becomes too airtight, stale indoor air has fewer opportunities to escape. Pollutants generated by everyday activities remain indoors longer, and odors may linger instead of dissipating. Over time, the lack of fresh air exchange can negatively affect overall indoor air quality. This issue is especially noticeable in newer homes or recently renovated properties...

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Top Tips for Better Indoor Air Quality During the Winter

December 11, 2025

Wintertime is an excellent time to relax indoors and spend time with family. But you must also stay aware of certain indoor allergens that can trigger uncomfortable symptoms. Dust Mites Dust mites, despite being incredibly small, are huge hazards for your health and comfort. They love living in warm, humid indoor environments. And with your heater running all winter, this gives them the perfect breeding environment. You may notice an increase in certain symptoms, including sneezing and congestion, when the dust mites accumulate in your carpet and bedding. Pet Dander Pets often spend more time indoors during the winter. This means there is more pet dander floating around the home. Breathing in pet dander may cause symptoms like sneezing or watery eyes. If you’re allergic to the proteins in the dander, it can irritate your skin and throat. The more the pet dander gathers and settles, the harder it is to remove it. Indoor Mold Spores If your home has poorly ventilated areas, there’s a higher risk of mold growth in those spots. And with winter weather often causing condensation on windows, the poorly ventilated spots become even more vulnerable to moisture buildup. When spending time in areas that have...

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What to Do If Your Furnace Stops Working in an Emergency

November 29, 2025

When your furnace stops working on a cold night, it’s more than an inconvenience. A sudden loss of heat can quickly create unsafe conditions for your home and family. Acting quickly and safely makes a big difference. in O’Fallon wants our customers to know what to do in the case of a furnace emergency. Stay safe and learn what to avoid during a heating emergency. Stay Calm and Assess the Situation When the heat shuts off, panic can set in quickly. Before reacting, take a moment to assess what’s happening. Determine if you are hearing strange noises. Do you notice any unusual odors, such as burning smells, or do you see smoke? If there are no signs of immediate danger, start with a few simple checks. Some furnace issues have quick fixes. If you notice any dangerous signs, like the smell of gas, get out of the house right away. Check the Thermostat A surprising number of heating repair calls result from a thermostat that needs repair. First, ensure the thermostat indicates it’s on the heat setting. Verify that the set temperature is higher than the current room temperature. If your furnace runs on batteries, replace them and see how...

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Understanding What Maintenance Your Geothermal System Needs

November 11, 2025

Geothermal systems have been in use since the 1940s, but their popularity has increased significantly over the last 20 years. These underground systems use a series of pipes that move heat from your home to the ground and vice versa, depending on the season. Homeowners appreciate these systems for their efficiency, low operating costs, and quiet operation. These underground heating systems work by circulating fluid through a series of buried pipes. An indoor heat pump transfers heat between the underground loops to the system’s air distribution system. Not only are they good for your wallet, but they are also better for the environment. However, before considering one of these systems, it’s essential to understand the maintenance they need and how they compare to other systems. How Geothermal Systems Differ From Traditional Systems Typical air-sourced heat pumps and furnaces offer easy access to their components, making maintenance fairly straightforward. HVAC maintenance for these systems involves changing the filters regularly and seeking professional inspections and care. On the other hand, geothermal systems have parts buried underground. Geothermal heat pump systems feature an underground piping system made of high-density polyethylene. Installation involves burying the pipe system horizontally in shallow trenches or deeper when...

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What is Included in Fall Heat Pump Maintenance?

September 9, 2025

As fall starts to shift the outdoor air from warm to crisp, your heat pump needs a reset. After a long summer of cooling, it’s about to switch gears. That kind of seasonal transition is harder on the equipment than most people realize. During a well-timed maintenance visit, an HVAC technician can smooth out the change, spot any hidden issues from the cooling season, and make sure your heat pump is ready to heat efficiently. At , in O’Fallon, MO, we walk homeowners through precisely what we check, why it matters, and how it keeps your system running longer. Our goal isn’t just to fix things when they break. We’d rather help you prevent breakdowns entirely, so you stay comfortable throughout the year. Switching to Heating Mode Isn’t Automatic Your heat pump doesn’t just flip from cooling to heating like a light switch. It shifts how it moves refrigerant, how the reversing valve operates, and how the outdoor coil behaves in colder air. In the summer, the outdoor coil dumps heat. Once the system moves into heating mode, it pulls heat from the cold air outside. That’s a big change in function, and it only works smoothly when everything is...

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Do Ductless Systems Require Fall Maintenance?

September 2, 2025

Your ductless system worked hard during the summer. Before cold weather hits, it needs a quick check to stay reliable as the season changes. At , in O’Fallon, MO, we help homeowners handle the kind of maintenance that keeps ductless units running quietly and reliably year-round. If this is your first time prepping your mini split for fall, you’re in the right place. Why Fall Matters Even Without Ductwork You might assume ductless systems skip seasonal prep because they don’t rely on large duct networks or gas burners. They’re compact, sleek, and often quieter than traditional systems. That doesn’t mean they’re set-it-and-forget-it. Ductless units still manage airflow, refrigerant pressure, and drainage, all of which are affected by changing seasons. Fall brings shifting indoor and outdoor temperatures, fluctuating humidity, and more frequent cycling as heating demands ramp up. That seasonal shift makes early fall the best time to prep your mini split for what’s coming next. As leaves fall and the air gets cooler, your outdoor unit starts working differently. Any debris near the base, like twigs or dead leaves, could obstruct airflow or trap moisture. Clearing out that area gives the system better breathing room when it needs it most....

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HVAC Maintenance Tips for the End of Summer

August 25, 2025

As temperatures start to cool off in O’Fallon, MO and summer winds down, now is the time to consider some simple HVAC maintenance tips. Working with our team at to perform these maintenance tasks regularly can prevent equipment failure, protect the longevity of your system and ensure efficiency. Check out these HVAC maintenance tips for a reliable system year-round. Clean or Replace Your Air Filter Your HVAC system has a filter that’s either washable or replaceable. Washable versions tend to require maintenance once per month. Replaceable filters should be replaced every 30 to 90 days, depending on the type of filter you have, how frequently you run your HVAC system and whether you have pets in the home. If you’re unsure how often to service your HVAC filter, work with our team to come up with a practical plan. In between changing or washing your filter, you should inspect it for signs of debris buildup or wear. Do this every few weeks. You should also look for filter damage that can compromise its ability to trap particulate matter. Hold your filter up to the light to see if it is saturated in particulate matter. Clumps of particulates on the filter’s...

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Are Your Air Ducts Helping or Harming Your Home’s Air?

August 5, 2025

When you think about indoor air quality, filters and purifiers might come to mind, but your air ducts affect the air you breathe every day as well. If they’re dusty, leaky, or poorly designed, they can spread more than just warm or cool air. They can also move dust, allergens, and stale air from room to room. At , in O’Fallon, MD, we’ve seen firsthand how overlooked ductwork can affect comfort and health. Why Ducts Matter The air in your home travels a long path before it ever reaches the room you’re standing in. That path often winds through a series of ducts behind your walls and ceilings. If those ducts aren’t in great shape, the air they move won’t be either. A well-built, clean duct system helps deliver steady airflow. It also helps keep the air fresh by circulating it without collecting debris or stirring up particles that were previously stationary. When that system breaks down, your indoor environment starts to change. You might feel stuffy in one room and chilly in the next. You might smell something that was cooked two days ago, or feel like your allergies don’t go away even after a deep clean. These signs...

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Digging Deep: Geothermal Comfort for Missouri’s Weather Swings

July 15, 2025

Missouri weather doesn’t stay in one lane. You face sticky heat in the summer, deep freezes in the winter, and constant swings during the shoulder seasons. That kind of back-and-forth puts standard HVAC systems to the test. Geothermal systems handle it differently by working with the ground, not against the air. At , in O’Fallon, MO, we’ve helped homeowners make the switch to geothermal systems that match Missouri’s unpredictable weather patterns. If you’ve been curious about digging a little deeper into how your home stays comfortable, this blog is a solid place to start. Underground Stability Helps Your Energy Bills The ground deep below your lawn stays around 55°F year-round. When a geothermal system pulls heat from the ground, it doesn’t face extremes like an outdoor unit would. In Missouri, where winter mornings dip well below freezing and summer afternoons boil above 90°F, that stability matters. You replace battling the hot or cold air with leveraging a mild underground temperature. As a result, the system uses less power to move heat around. You’ll notice that your power meter ticks more slowly and your bills shrink noticeably compared to traditional systems. Many homeowners report months when their HVAC energy use drops...

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How Whole-Home Dehumidifiers Help Your HVAC System

July 4, 2025

If your home feels clammy even when the AC is running, the problem might not be temperature at all. Excess humidity can make every room feel warmer, heavier, and downright uncomfortable. At in O’Fallon, MO, we help homeowners figure out what’s throwing their indoor climate off balance and offer tailored solutions that make a difference. Humidity Makes Your HVAC Work Harder When your house traps moisture in the air, your air conditioner doesn’t just cool things down. It has to pull the water vapor out, too. That double duty might not seem like a big deal, but it slows down your system and forces it to run longer to reach the temperature you’ve set. Your AC wasn’t built to focus on moisture removal. Its main job is to lower the air temperature, and when it’s asked to manage both heat and humidity, it wastes energy. That leads to more wear and tear. If you’ve noticed your AC running longer without giving you much relief, the issue may not be the appliance itself. You’ll Sweat Less and Sleep Better With Dryer Air Sticky air makes it harder to fall asleep. You toss and turn because your body can’t cool itself as...

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