Emergency AC Service

When you live in the Jacksonville or St. Augustine area, any time your air conditioning system doesn’t work properly — it’s an emergency. When that happens, calling a reputable heating and air conditioning company that offers emergency repair service is a must. While you wait, check out these helpful how-to videos:

HOW TO TURN YOUR AC SYSTEM OFF

When your air conditioner is not working properly, the first thing to do is to turn your system off, the right way.

HOW TO CLEAN YOUR AC DRAIN LINE

Humidity extraction is critical to efficient AC operations. Here’s how to check your drain line and remove unwanted clogs.

AC WATER PROTECTION

Installing the right detection devices for your indoor air handler is imperative to water safety protection for your home.

AC TROUBLE SHOOTING

Step-by-step instructions for what to do when you’re having problems with your heating and air conditioning system.

AC FILTER REPLACEMENT

Dirty air filters are a leading cause of malfunctions. Watch this short video on how to select and replace your AC filter.

We believe no one should have to suffer with a busted AC. That’s why our service technicians will keep your existing HVAC brand operating efficiently for as long as possible, then help you select the best heating and cooling replacement unit when the time comes. If you want to make sure that your system is in top working condition before the real summer heat arrives, contact Donovan Heat & Air. Our cost-saving Preferred Customer Program is a better alternative than relying on annual AC inspections.