After a cool, soggy May, the Treasure Valley is finally turning the corner and ready for summer. We're looking at low 80s midweek and 86 by Friday from Nampa to Boise. June is the month your AC stops running here and there and starts running every day.
That switch from occasional operation to constant is when we get our busiest stretch of "it's not cooling like it used to" calls. It's not bad luck. A system that handled a few warm afternoons in May just fine can start to struggle once it's asked to run for hours a day in real heat. That sustained load is what exposes a low refrigerant charge, a weak capacitor, or a coil caked with dust and cottonwood.
Here are a few questions we get every June and how we respond.
Why Is My AC Struggling Now When It Seemed Fine a Few Weeks Ago?
Running your AC for an hour on a mild afternoon and running it all day in 90-degree heat are two very different jobs. Nine times out of ten, the thing holding it back is one of three: a dirty outdoor unit, a clogged filter, or low refrigerant.
The most common culprit out here is the outdoor condenser. Cottonwood and elm fluff hits the Treasure Valley hard in late May and early June, and it mats right onto the coils on the side of your house. You've likely seen all the white "cotton balls" floating through the air. That's exactly what gets sucked onto your coil. Add a winter's worth of dust and you've basically wrapped your AC in a blanket. It's running, but it can't dump heat outside, so the air coming out of your vents never gets cold. Andy pulled enough cottonwood off a unit in north Nampa last week to fill a grocery bag. After a rinse, it was cooling fine.
If you can't remember the last time you changed your filter, swap it before you do anything else. A plugged filter chokes airflow and is the cheapest fix there is. Take a garden hose and lightly rinse the outdoor condenser to remove caked dirt and cottonwood.
Why Does My AC Smell Musty When It's Running?
A faint musty smell that clears within a few minutes of startup is usually nothing, just dust on the coil and a little settled moisture burning off.
What's not normal is a smell that sticks around, anything like mildew or something rotting, or a burning electrical smell. Persistent mustiness often means mold on the evaporator coil, in the drain pan, or within the ducts. Idaho is not a humid state, so if you have water issues it's likely from the condensate or something else unrelated to the HVAC that happens to be affecting the system. A burning smell is different. Shut the system off and call someone. Don't wait that one out. It could be a burnt motor, control board, or a number of other things.
Should I Get a Tune-Up Now or Wait Until Something Breaks?
If you have to ask that question, do it before the first 100-degree stretch, not during it.
This isn't us upselling. It's timing. When the valley hits triple digits in July, every HVAC company in the area is slammed, and you could be days without cooling waiting for a slot. A tune-up in early June catches the small stuff: a weak capacitor, low refrigerant, a dirty coil, all while it's inexpensive and while we can actually get to you the same week. We'd rather find a tired capacitor on a 75-degree morning than have it quit on the hottest afternoon of the year.
A maintenance visit also keeps your manufacturer's warranty valid. Most warranties require documented annual service, and "I didn't know" doesn't help much when a compressor fails.
How Much Does an AC Tune-Up Cost Around Here?
Our standard tune-up runs $149 and includes a full system check: refrigerant levels, electrical components, coil cleaning, condensate drain, and airflow. We do this twice per year, once in the fall and once in the spring to prepare for each season. Our memberships include no trip charges or diagnostic fees, and we even credit your tune-up fees toward a new system when the time comes.
What moves the price is what we find. A straightforward tune-up on a healthy system is one number. If a coil needs a deep clean or a part is on its way out, we'll show you what we found, what it costs, and what happens if you leave it. Nothing gets done without your approval first.
When Should I Just Call Somebody?
Call us if:
- The air never gets cold after you've changed the filter and rinsed the outdoor unit
- The system is short-cycling (kicking on and off every couple of minutes)
- You hear grinding or buzzing
- You smell anything burning
The filter and a gentle hose-down of the outdoor coils are fair game for any homeowner. Past that, anything involving refrigerant, electrical parts, or opening up the system is licensed work for a reason. The DIY videos online tend to skip the part where people get hurt or void their warranty.
The Short Version
If you do one thing this week, change your filter and spray the cottonwood off your outdoor unit before it warms up. If the air still isn't cold after that, give us a call. We're booking June maintenance now, and we'd much rather see you this week than during the first heat wave.
We're a family-run shop and we work the whole valley: Nampa, Caldwell, Meridian, Boise, and beyond. Reach us at 208-455-5158.