Technician smiling in driveway

Your Heating System and Common Problems

At this time of the year we get a lot of people calling in panic, saying things like... "HELP! My outdoor ac unit is on fire!" "A large puff of smoke came from the outdoor unit" "My HVAC unit...


Set your thermostat to AUTO and avoid a common mistake

One common mistake we see from homeowners is setting the fan to the ON mode. Most thermostats have two settings for the fan - AUTO and ON - and some technicians even encourage their...


“Do I really need AC Maintenance?”

We have customers ask us all the time how important is AC maintenance. I have some pictures below showing how important it really is. The unit in the pictures below are located near some Pine...


NOT having an Extended Labor Warranty is CRAZY!

To meet the high usage demands of Jacksonville heating and air conditioning equipment, Donovan Heat, Air, & Electric is proud to offer a 10 Year Manufacturers Parts Warranty on all of our HVAC...


Proper Control of Indoor Humidity is a BIG Deal

Many Jacksonville home owners have made their homes as energy efficient as possible. New windows, new insulation, new weather-stripping, etc. are doing a great job of sealing in and sealing out a...

Wiping glass due to indoor humidity