Is Your AC Ready for Summer? What Porter County Homeowners Should Do Right Now

April in Porter County means unpredictable weather — a 70-degree afternoon followed by frost warnings a few days later. But summer is coming, and it arrives fast. The worst time to find out your AC has a problem is the first genuinely hot weekend in June, when every HVAC company in Northwest Indiana is fully booked and you are left waiting in the heat.

A few simple checks right now, while temperatures are still mild, can tell you whether your system is ready to handle the season or whether it needs attention before the heat sets in. This is not about spending money unnecessarily — most of what is covered here costs nothing but a few minutes of your time.

This is the single most important thing you can do in April. Most homeowners do not run their AC until the first truly uncomfortable day, which means any problem that developed over the winter sits undetected until the worst possible moment.

Set your thermostat to cooling mode and drop it a few degrees below the current indoor temperature. Let the system run for 10 to 15 minutes and pay attention to what happens. Cold air should start coming through the vents within a few minutes. If it takes much longer, or if the air coming out is lukewarm, the system is not performing the way it should.

Listen while it runs. A system that sat idle all winter sometimes makes noise on startup that settles down after a few minutes — that is generally fine. But grinding, rattling, or banging that continues after the first minute or two is worth paying attention to. These sounds typically indicate a mechanical issue that will not fix itself and will usually get worse under the sustained load of a full summer.

Check the vents in each room while the system is running. Uneven airflow — strong in some rooms, weak in others — can point to duct issues, a struggling blower motor, or blocked returns. Catching this in April gives you time to address it without urgency.

If you cannot remember the last time you changed your air filter, change it now. A clogged filter is one of the most common causes of AC problems and one of the easiest to prevent. It restricts airflow through the system, which forces the blower to work harder, reduces cooling efficiency, and over time can cause the evaporator coil to freeze — turning a $15 maintenance item into a service call.

For most homes in Porter County, a filter replacement every 60 to 90 days during the cooling season is the right interval. If you have pets or anyone in the household with allergies, consider replacing it more frequently. The filter size is printed on the edge of your current filter — write it down and keep a spare on hand so you are not waiting on a delivery when you need one.

While you have the filter out, shine a flashlight into the return air opening and take a look at the evaporator coil if it is visible. A light layer of dust is normal. A thick buildup of debris or any signs of ice or moisture where there should not be any is worth having looked at before the system runs hard all summer.

Walk outside and look at your condenser unit — the large box that sits outside your home. Over the winter, debris accumulates around and sometimes inside the unit. Leaves, sticks, mulch, and dirt that settled against the unit during fall and winter restrict airflow and reduce efficiency.

Clear at least two feet of space around all sides of the unit. Remove any debris from the top and gently rinse the exterior fins with a garden hose if they are visibly dirty — spray from the inside out if possible, and keep the water pressure moderate. Do not use a pressure washer, which can bend the fins and damage the unit.

Check whether any shrubs or plants have grown into the clearance zone over the winter. Vegetation that crowds the condenser reduces airflow and can eventually cause the system to overheat under load. Trim anything that has encroached and give the unit room to breathe before summer arrives.

Your AC system removes humidity from the air as it cools your home, and that moisture drains out through a condensate line — typically a white PVC pipe that exits near your indoor unit and drains somewhere outside or into a floor drain. Over the winter this line can develop algae or debris that partially or fully blocks the flow.

A blocked condensate drain is one of the more common summer service calls. When it backs up, water overflows into the drain pan and eventually onto the floor around your indoor unit. Some systems have a float switch that shuts the unit down when the pan fills — which is protective but still leaves you without cooling until the line is cleared.

You can flush the line by pouring a cup of distilled white vinegar into the drain line access point — usually a capped T-fitting near the indoor unit — and letting it sit for 30 minutes before flushing with water. Do this once in spring and once mid-summer and you will significantly reduce the chance of a drain backup during peak season.

Some things you can check and address yourself. Others are worth having a professional look at before they become urgent. If your system showed any of the following during your startup test, it is worth scheduling a service call now while there is still time to get it handled before the season peaks.

• The system runs but does not cool — air coming from vents is room temperature or warmer
• Ice forming on the refrigerant lines or around the indoor unit
• Grinding, banging, or squealing sounds that persist after startup
• The outdoor unit runs but the indoor unit does not — or vice versa
• Significantly higher energy bills compared to the same period last year
• The system short cycles — turning on and off every few minutes without completing a full cooling cycle

These are not problems that resolve with a filter change. They require diagnosis and repair, and addressing them in April rather than July means you are not competing with every other homeowner who waited until their system failed on the hottest day of the year.

Apex Heating and Cooling provides AC repair and service throughout Porter County. Ed Miller handles every service call personally — no subcontractors, no rotating crews. If your system showed any warning signs during your spring startup, or if you would simply like a professional to assess it before the season begins, call or text Ed directly at (219) 299-7134 .

Apex serves homeowners in Valparaiso , Portage , Chesterton , Hobart , and throughout the surrounding Porter County area. Same-day service is available for urgent situations.