Common Questions

Common Questions

Let Our Heating & AC Experts In Denham Springs Help You!

The HVAC system in your home plays an important role in your overall home comfort, but how the system works is a mystery to the vast majority of homeowners. At Carlisle Heating and Air Conditioning, we have been serving customers throughout the community since 2003, and we have fielded countless questions during that time. As you do your research, let us help by answering some of the most common queries we receive!

If you have any further questions or are ready to get started with your first appointment, reach out to our Denham Springs HVAC service team at.


How Long Should My HVAC System Last?

There are numerous factors that impact how long your heating and cooling system will last, including the make and model, whether or not it received regular maintenance, how frequently it is used, and much more. However, on average, homeowners can expect their heating and cooling system to last around 15 years.


How Frequently Should I Get Maintenance Service On My Heating & Cooling System?

Most systems are best served by bi-annual checkups – one in the fall before the chill sets in, and one in the spring before things really heat up. Not only will this serve to ensure that your system is ready to take on the coming season, it will also help you to identify any potential problems and address them before they become larger, more costly issues.

How Do I Know If I Need A New AC Or Heater?

Signs That It May Be Time To Install A New System, Include:

  • Your heater or AC unit is 15+ years old
  • The unit is making strange noises or smells
  • The unit does not heat/cool the property evenly – or at all
  • It takes a long time to reach the goal temperature

Contact our team of HVAC experts in Denham Springs at today to get started. We are here to help!

Online Specials

10% Off

Military and Seniors Discount

Valid from May 1, 2022 - Dec 31, 2022

$250 Off

New Unit Installations

Valid from May 1, 2022 - Dec 31, 2022


Outdoor Cleaning, Freon & Component Check

Valid from May 1, 2022 - Dec 31, 2022

Cool guy

"Brent replaced my ac unit and did a super job. Price was very reasonable."

Ken Anglin

See What Makes Carlisle Heating & AC Different


Money Savings Offered

On top of keeping our overhead low so we can pass the savings onto you, we also offer specials throughout the year on many popular services.

Upfront Pricing

You will never be taken by surprise when the final bill comes with our upfront and competitive prices.

Community Driven

We care about our customers, if we can’t fix it today we’ll give you a loaner unit till we can get yours up and running again.

Satisfaction Guaranteed

We won’t be satisfied until you’re satisfied. We stand behind our work and we’ll even give you your money back.

We’re Here to Help

Contact Us Today