Your air conditioner has two coils, and both only work when air can move through them and heat can move across them. A layer of dust does to a coil what a blanket does to you: it insulates.
The system runs longer to do the same job, the bill goes up, and the compressor works against pressures it was not built for. Dry dusty air, wind and smoke seasons load coils faster than the schedule in the owner's manual assumes.
The evaporator coil sits inside, in the air handler or on top of the furnace. House air blows across it, gives up its heat and moisture, and comes out cool. The condenser coil sits outside and sheds that heat.
Why people call us for coil cleaning
- Weak cooling
- Bills creeping up
- Musty smell
- Ice on the indoor coil
$69 diagnostic, credited toward the work
- Indoor coil cleaning
- Outdoor coil cleaning
- Drain line flush
- Performance re-test
How a coil cleaning goes
Both coils get looked at: the outdoor condenser coil and the indoor evaporator coil, plus the drain pan under it. Power goes off at the disconnect before any water or cleaner goes near the unit.
The coil is cleaned the way its manufacturer says. Some specify a gentle rinse from outside, others cleaning from the inside out. Never a pressure washer, which folds the fins flat.
Temperature split and pressures are checked afterwards, which shows what the dirt was costing. A coil cleaning is scheduled work, not the $69 diagnostic; you hear the price before you book. Our labor carries a one-year warranty.
We repair, maintain and install these brands. Logos identify the equipment we work on and do not imply endorsement by the manufacturer.
Before you call
Dust works like a blanket
A coated coil cannot move heat, and the pressure inside the system climbs with it. On a very hot day that is what trips the breaker. Read more
Follow the manufacturer, not the internet
Some allow a gentle rinse from the outside with the power off at the disconnect; others want the coil cleaned from the inside out by a technician. A pressure washer folds the fins flat. Read more
The indoor coil and the drain go together
A dirty indoor coil can freeze over and then leak water when it thaws. It sits behind a panel and is not a homeowner job. A filter that fits its slot is what keeps it clean between visits. Read more
Power off at the disconnect
The disconnect box next to the outdoor unit is where the power actually gets cut; the thermostat only stops the call. Nothing wet goes near the unit before that, whether it is our visit or a rinse you do yourself. Read more
Goes with a coil cleaning
Common questions
Yearly, and again after a wind event that packs it with dust and debris. A coil that looks clean from the outside can be matted on the inside face, where the fan pulls air through. Read more
Check your manual first, because manufacturers differ. Some say a gentle rinse from the outside with the power off at the disconnect is fine. Others want a technician to clean the coil from the inside out. Never use a pressure washer. Read more
Longer run times and higher bills first. Then higher pressure in the system, a compressor drawing more current, and on a very hot day a tripped breaker. A dirty indoor coil can also freeze over and leak water when it thaws. Read more
It sits in the air handler or on top of the furnace, behind a panel, and it is not a homeowner job. A good filter that fits its slot is what keeps it clean between visits. Read more
No. The $69 diagnostic is for a system with something wrong, and it is credited toward the work if you go ahead. A coil cleaning is scheduled work. You hear the price before you book.
Usually within a few hours. We are open 6am to 10pm, seven days.
It removes one of the cheapest causes of a high bill. A coated coil insulates, so the system runs longer for the same cooling. Cleaning it, and checking the charge at the same time, is usually the first fix to try before anyone talks about new equipment. Read more
“Amazing Professional And quick service the AC technician Jonathan arrived same day one hour after he called … He replaced the filters clean the Coils … Our AC never was Cold like this and the airflow is amazing”
Schedule service
Fill in the form or call. We are on the phones 6am–10pm.
818-277-5056Licensed #1119892 · Veteran-owned · Pasadena & Reseda