If your house still feels too hot despite the calendar indicating it should be cooler, you’re not alone. Summers are, indeed, getting warmer.
El Niño is currently getting a lot of attention, and for good reason. Guardian actually called it a “jaw-dropping” phenomenon that is supercharging the climate crisis. And according to NOAA, this past summer was the warmest on record in the last 132 years.
So yes, it’s getting hotter. But rising outdoor temperatures aren’t the only culprits. Drafty windows, poor insulation, and aging or faulty HVAC equipment all contribute to making your indoor spaces warmer than they should be.
But that’s also the good news. It means that you don’t need to rebuild your house to make it easier to cool. A few targeted upgrades can dramatically improve comfort and reduce the work your AC has to do for years to come.
Make Your AC Work Smarter
If nobody is home from 8 a.m. to 5 p.m., there is little reason to keep the house at the same temperature as when everyone is there. A programmable or smart thermostat can raise the setting while you’re out and bring it back down before you return.
Just don’t make the jump ridiculous. A huge temperature setback won’t make the system cool the house faster when you get home. It can simply leave you waiting around for the temperature to catch up.
Maintain Your Equipment Before It Fails
Your air filter deserves constant attention. Yes, we said constant, because a clogged filter restricts airflow and can make an HVAC system work harder. So check it monthly and replace it according to the equipment manufacturer’s recommendations (some homes need more frequent changes than others, especially with pets or heavy dust).
Also, get the system inspected before it fails on the hottest afternoon of the year. If you live in the Midwest, scheduling professional cooling services in Minnesota can uncover airflow problems, dirty coils, electrical issues, or other trouble before you need emergency service. And if you’re in a hotter state like Texas, regular maintenance and inspection are even more important.
Keep Solar Heat Outside
Sunlight that hits a window becomes heat inside the room. Exterior shades and awnings can block that heat before it reaches the glass, while interior blinds, shades, and curtains can provide another layer of protection. DOE specifically recommends window attachments and other forms of shading as part of a broader strategy to reduce cooling demand (and savings range from 15% to 25%).
Weatherstripping around doors and windows is another low-cost, high-impact fix, as it can stop cooled air from escaping and hot outdoor air from sneaking in. If you can see daylight around a closed exterior door, your house is basically sending your air-conditioning money outside.
Fix the Parts You Can’t See
Ductwork can have a significant effect on your cooling bill as well. In fact, DOE’s Building Science Education program notes that properly sealed ducts can reduce utility bills by up to 20% while improving comfort. Leaks matter even more when ducts run through hot attics, garages, or other unconditioned spaces.
Insulation is another excellent home improvement project. If your attic has inadequate insulation, the AC is fighting heat that has already made its way through the roof. An energy assessment can help identify whether insulation, air sealing, or duct improvements make sense before you start replacing equipment.
Plan the Next Upgrade Around Efficiency
Finally, when your HVAC system reaches the end of its useful life, don’t automatically replace it with the biggest AC unit you can afford. Correct sizing matters, and an oversized system can cycle too frequently instead of removing humidity effectively.
A high-efficiency heat pump is another option worth investigating. Today’s models provide both heating and cooling, which can make them particularly useful if you’re replacing an aging HVAC system anyway.
