When temperatures in Modesto climb past the triple digits, your HVAC system doesn’t get a break. The hotter it gets outside, the harder your unit has to work to keep things comfortable inside. You might start noticing longer cooling cycles, higher energy bills, or uneven temperatures from room to room.
At Cencal Mechanical Heating & Air, Inc., we help Modesto homeowners keep their systems running strong even during long heat waves with AC maintenance and other services. Read this quick guide to know how heat takes a toll, and what you can do.
Hot Weather Makes Your AC Work Longer
When outdoor temperatures stay high all day, your air conditioner runs longer to maintain your desired indoor temperature. This constant cycle puts extra stress on components like the compressor and fan motor, increasing wear and tear. You might notice your AC turning on more frequently or running continuously without reaching the set temperature.
This could be due to low refrigerant levels, restricted airflow, or an aging system struggling to keep up. If your home still feels warm even with the AC running, it’s time to schedule a professional inspection.
Old Insulation Could Be Part of the Problem
Your attic and walls play a major role in keeping your home cool, but only if they’re properly insulated. As insulation ages or becomes damaged by moisture or pests, it loses its ability to trap cool air inside. That means your air conditioner has to run longer to make up for the loss. If you feel warmth radiating through walls or ceilings during the day, it’s a sign that your insulation may need an upgrade.
Attics are especially problematic in the summer. Without enough insulation or ventilation, they can reach temperatures over 130°F, pushing heat down into your home and forcing your AC to work overtime. Installing attic insulation or adding a ventilation fan can dramatically reduce that heat load. You’ll likely notice cooler upstairs rooms and shorter AC cycles, which can lower your energy bills while making upstairs bedrooms much more comfortable to sleep in.
Poor Airflow Makes Your AC Work Overtime
When your HVAC system can’t circulate air freely, it has to work harder to cool your home. One of the most common culprits is a clogged air filter. Filters catch dust, pet hair, and allergens, but once they get packed, airflow slows down. That reduces cooling power and can cause your system to overheat or cycle longer than it should. It also contributes to poor indoor air quality, which can aggravate allergies or asthma.
Blocked or closed vents can cause similar problems. If furniture, curtains, or rugs are covering a vent, your forced air system cannot distribute cool air properly. This leads to uneven temperatures and forces your AC to keep running in an attempt to balance things out. Make sure all vents are open and unobstructed, especially during a heat wave. Your supply and return vents need two feet of clearance around them for good airflow.
ACs That Are Too Big or Too Small Waste Energy
Your air conditioner needs to match the size of your home to work efficiently. A unit that’s too small will struggle to cool the space. It runs constantly, wears out faster, and still can’t keep you comfortable. You might notice it never shuts off, rooms feel humid or sticky, and your energy bills climb without much relief.
On the other hand, an oversized AC cools the space too quickly, which sounds like it would be an advantage. However, it may shut off before it can circulate air evenly or remove enough humidity. That leaves your home feeling damp and clammy. Short cycling also puts stress on parts and leads to more frequent repairs. Our technicians can inspect your system and, if necessary, recommend an upgrade that better matches your household’s needs.
Contact Your Local Cooling Experts
High summer temperatures can wear down your cooling system, especially if it’s overdue for a tune-up, improperly sized, or struggling with poor airflow and insulation. Your home should feel like a retreat, not a heat trap. At Cencal Mechanical Heating & Air, Inc., we specialize in AC repair, installation, and maintenance with Modesto’s scorching summers in mind.
From duct cleaning and smart thermostat upgrades to energy-efficient systems, we’re here to help you stay cool and comfortable. If your AC needs attention before the next heat wave, schedule your service today.
