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Frequently Asked Questions

Check out a list of our most frequently asked HVAC-related questions below!

Have additional questions? Call Cool Zone Inc. at 239-513-9199 today to speak with one of our knowledgable representatives.

What is the Ideal Humidity Level for my Home?

The humidity level of a residence should never exceed 60%. Indoor environments kept at greater than 60% humidity are susceptible to  mold and mildew growth. This can lead to  property damage and decrease air quality. Many of the latest thermostats display your home’s current humidity level, and Cool Zone techs always test for humidity during maintenance visits.

Where Should I Set My Thermostat When I Leave Town?

If you are leaving your home for any extended period of time, your thermostat should be set to 78 degrees. This is a sort of “sweet spot” where your unit will run often enough to keep humidity under control, but not often enough to waste money cooling an uninhabited home.

How Often do HVAC Filters Need Replacing?

HVAC air filters work to clear circulating air of dust, dirt, allergens and other contaminants. As such, they need to be cleaned or replaced regularly to maintain clean air and help your HVAC system operate at peak efficiency. Cheap, disposable filters should be checked/changed every month, while premium filters should be changed every four to six months depending on filter specifications. Non-disposable filters should be checked/cleaned monthly.

How Often Should Heating and Cooling Systems be Serviced?

To maintain the highest efficiency with your heating and air conditioning, Naples, FL-based Cool Zone suggests servicing your HVAC equipment two times per year. Not only does this level of service ensure top efficiency through proper maintenance of parts and smooth airflow, but also reduces the need for HVAC repairs over time and expands the lifespan of equipment. 

What is Included With an HVAC Maintenance Plan Visit?

Among elements included with HVAC servicing by your Naples premier heating and air conditioning company are:

  • Full inspection
  • Coil cleaning in place (if accessible)
  • Refrigerant check
  • Blower wheel inspection
  • Heating element examination
  • Fan assessment
  • Electrical connection check
  • Lubrication as needed
  • Condensate drain inspection and cleaning
  • Thermostat setting adjustment
  • Air filter replacement (with standard filter media)
How Often do Residential HVAC Systems and Air Ducts Need to be Cleaned?

The answer to this question may depend on a variety of factors. A key consideration is whether any of a home’s residents suffer from asthma or other respiratory ailments. Households with smokers and/or pets may also want to conduct more frequent cleanings. Cool Zone also recommends HVAC system and air duct cleaning prior to moving into a new home, after renovations, and whenever there has been any damages or water contamination to the home or its HVAC system. 

Does Duct Cleaning Provide Any Health Benefits?

Research has shown that HVAC systems can collect and disperse numerous contaminants that may impact overall health, especially those already afflicted with respiratory illness. These contaminants include mold, fungi, bacteria, and small dust particles that can be removed by HVAC system and air duct cleaning. 

Does HVAC System Cleaning Help Reduce Energy Bills?

The U.S. EPA has conducted research showing that HVAC system cleaning can boost system efficiency by clearing debris from sensitive mechanical parts. Dirty HVAC systems tend to be more prone to break down, have a shorter lifespan, and typically operate less efficiently than clean systems.

What is the NADCA and Why Should I Use a NADCA Member to Clean My Air Ducts?

NADCA stands for the National Air Duct Cleaners Association. And when you use a NADCA-certified air duct cleaning service, such as offered by Naples, FL-based Cool Zone, you are guaranteed to receive the highest levels of air duct cleaning and service.  

What Else Can I do to Maintain My HVAC System?

With regular inspection, cleaning and service of your heating and air conditioning, Naples, FL-based Cool Zone believes you can cover all bases related to efficiency, air purity, and maintaining your HVAC system.

When is it Time to Purchase a New Air Conditioning System?

Age is a primary consideration, especially when you consider that today’s HVAC equipment can be up to 60 percent more efficient than late model equipment. Along with age, neglected maintenance, and wear and tear can contribute to inefficiencies. If your HVAC system is struggling, or your air conditioning repair bills are starting to mount up, your Cool Zone technician may recommend replacement. You may also need a new system if you notice an increase in utility billing combined with a decrease in the efficiency of your system. New additions or expanded space in your home or work space may also warrant the need for a new HVAC system.

If you want to upgrade your heating and/or air conditioning, Naples, FL-based Cool Zone can provide you with the highest efficiency air conditioners, furnaces, and HVAC systems available in southwest Florida. Not only will your new system deliver the most comfortable levels of clean air, but help you save money on your utility bills.  

Do You Offer Financing for HVAC Equipment?
Cool Zone Inc. is partnered with Service Finance Company, LLC to provide easy financing and payment plan solutions for HVAC Equipment and Installation. Click the link below to apply now.
What Does It Mean to be a Lennox Premier Dealer?

Lennox Premier Dealers are the best of the best when it comes to repair, maintenance, and installation of all Lennox Systems. With 100% satisfaction guaranteed by Lennox, you know you are in good hands with a Lennox Premier Dealer like Cool Zone, Inc.

What Our Customers Are Saying

The Best!

Great company. They just installed a new system in my house. They performed maintenance on my original system for the past 10 years. I wouldnt use any other company. They are the best.

Daniel S


Always on time, never a problem. Thanks.



Very responsive, businesslike in every way. And just plain friendly.

Anthony W

Above & Beyond

They always go above and beyond! I so trust them!

Sharon Roemer

Customer Service

Great customer service and communication!

David Heinemann

Trusted Company

Cool Zone, Inc. is a company one can trust to have their mechanical work completed. The work was scheduled and performed exactly as stated without any delays or complications. The installers maintained my residence very neat and clean during the entire time of the new A/C installation. After the installation was completed they guided me through the thermostat settings and initial setup. They also assisted me with acquiring the Lennox App for my smart phone and instructed me on how to use this app. Cool Zone is a company I can truly recommend to anyone needing mechanical work.


Always Honest

Cool Zone has always been honest with me. I have used them for 15 years for all my properties. They have never over sold me on any product. Always up front with me choosing the best system for my needs.


Confidence in Cool Zone

We recently bought a 27 year old house that had less than consistent performance from the 3 central air conditioner units. Cool Zone came in and provided us with state of the art Lenox units and completely replaced the old deteriorating duct work. Our home is now much more comfortable and we have confidence in the performance of the equipment and the service provided by Cool Zone.


Many Thanks

Since I was a Dealer / Salesperson / Manager in a different industry I know what matters. And the Owner of Cool Zone does what few people do these days. “Build a great organization”. One of Cool Zones inside staff mentioned how wonderful the company was she worked for- well it just ran up hill from there. Sales, service call, installation, paperwork, filing warranty and rebates= All better than any purchase I have made in Years “61 years in fact”. I just wish I worked for a company like Cool Zone. Many Thanks – See you soon!


Like a Good Bottle of Wine

We have been using Cool Zone now for a number of years, and feel they get better with time, bit like a good bottle of wine. The knowledge, service, product knowledge is excellent and would recommend them to anyone.

Sandy A

Would Recommend

Shaun Silverwood, the salesperson who bid the job for a complete replacement of an existing system was very professional, and the installers were courteous and efficient. Would recommend Cool Zone to others.


So Happy

We are so happy we went with CoolZone. Our A/C stopped working and they fit us into their busy schedule right away. Their pricing was fair, their staff was great and the job was well done. We are very pleased.


Exceeded Expectations

Cool Zone Inc recently installed two new Lennox high efficiency AC units in our new home. They were extremely knowledgeable, professional and responsive to our needs. Before, during and after the install, the level of service far exceeded any of our expectations.


Dedicated Company & Staff

I used Cool Zone a couple months ago, and I am so glad I did! From when I first spoke with the office staff, to when the Service Tech came out to my house, I was overwhelmed by the amount of care, knowledge, consideration, and dedication this company puts into not only the work they perform, but their Company and Staff as well. I couldn’t be more pleased with my experience with Cool Zone and I look forward to using them in the future!


So Professional

I recently had service on my Lennox air conditioner bought from Cool Zone. They were so professional and handled all the repairs in a timely manner. The service crew was so polite and knowledgeable. A very positive experience!!!


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