HVAC Consumer FAQ: Everything You Need to Know

New Cooling System & Installation Questions

Replacing your cooling system is a significant investment, and understanding the process is key. Here are some of the common questions we get about new AC systems and installations, helping you make informed decisions.

How much does a new central air conditioning system typically cost in South Florida?

The cost usually ranges from $9,000 to $25,000+ for a new, professionally installed central AC system, depending on home size, system efficiency, brand, and installation complexity.

Are there financing options available for AC replacement or major repairs?

Yes, we have resources for helping you with financing for your new AC, ductless, or heat pump system. Options often include low-interest or zero-interest promotional periods to help spread out payments. Take a look at what we offer!

What factors influence the cost of an AC installation?
Major factors that determine the overall cost of your system include:

1. Size/Capacity of the System (Measured in Tons or BTUs)

What it means:
This refers to the cooling (or heating) power of the HVAC system. It’s measured in either tons (1 ton = 12,000 BTUs/hour) or BTUs (British Thermal Units).

Why it matters:
Proper sizing ensures comfort and efficiency. Too small a system won’t cool/heat adequately; too large wastes energy and money.

2. Energy Efficiency Rating (SEER/SEER2)

What it means:
SEER (Seasonal Energy Efficiency Ratio) and SEER2 are ratings that measure how efficiently an air conditioner or heat pump operates over a typical cooling season.

Why it matters:
Higher SEER/SEER2 ratings mean lower operating costs and less environmental impact. Newer standards (SEER2) are more stringent.

3. Brand and Model of Equipment

What it means:
The manufacturer (brand) and specific product line (model) of the HVAC unit.

Why it matters:
Different brands/models vary in reliability, warranty, support, features, and price. Researching these aspects helps with your long-term satisfaction.

4. Ductwork Needs or Modifications

What it means:
Assessment of existing ductwork to determine if it’s compatible with the new system or if upgrades/repairs are needed.

Why it matters:
Leaky, undersized, or poorly designed ducts reduce system efficiency and comfort. Modifications may be necessary for optimal performance.

5. Installation Complexity

What it means:
How difficult or involved the installation process will be, considering factors like system type, home layout, and accessibility.

Why it matters:
Complex installations take more time and cost more. Our technicians can determine an accurate estimation based on their inspection of the area and your current system.

6. Permitting and Local Code Requirements

What it means:
The legal and safety standards that must be met for HVAC installation, as set by local building codes and regulations.

Why it matters:
Pulling the right permits means the work will pass inspections and are up to code, preventing safety hazards and legal issues down the line.

Which Trane equipment will be best suited for my home?

The best Trane system depends on your home’s size, insulation, layout, and budget. A professional load calculation (Manual J) is recommended to match you with the right model and capacity.

What is the SEER Rating? Why was it updated to a SEER2 Rating?

• SEER (Seasonal Energy Efficiency Ratio): Measures cooling efficiency over a season; higher SEER = more efficiency.
• SEER2: Updated in 2023 by the Department of Energy to reflect more accurate, real-world testing and efficiency standards.

Why is the SEER rating on the Energy Guide different from what my dealer quoted?

Dealers may quote the maximum potential SEER for a system, but the Energy Guide label reflects the actual tested configuration, which can vary based on installed components.

What Is the Inflation Reduction Act?

The Inflation Reduction Act (2022) provides tax credits and rebates for energy-efficient home improvements—including qualifying HVAC systems. Check with us for specifics on available incentives.

Maintaining & Optimizing Your Cooling System

Why should I have regular (or preventive) maintenance? And how often should I have it performed?

Regular maintenance keeps your system running efficiently, extends its life, reduces surprise breakdowns, and may be required for warranty. We recommend having it serviced at least once a year, typically before summer.

What HVAC equipment requires regular (or preventive) maintenance?

• AC Units (both indoor and outdoor components)
• Heat Pumps
• Air Purifiers
• Ductwork
• Thermostats

What type of filter should I use? And how often should I replace it?

Use a filter recommended by your system’s manufacturer (often MERV 8–13 for homes). Replace every 1–3 months, or more frequently if you have pets or allergies.

Why can't I find the correct size filter at my local home improvement store for my Trane Brand Equipment?

Some Trane systems use proprietary or odd-sized filters. Call us if you can’t find a filter for your unit or order directly from Trane or specialized suppliers.

What are the advantages of a programmable thermostat?

• Optimizes temperatures based on your schedule
• Reduces energy use and lowers bills
• Increases comfort
• Many models offer Wi-Fi/app control

How can I reduce humidity in my home during the summer in Florida?

The humidity here can get pretty uncomfortable, so here's a list of interventions and pointers for you:

• Use a properly sized AC (oversized units won’t dehumidify well)
  • An air conditioner that is too large for your home will cool the space too quickly, shutting off before it has a chance to remove sufficient humidity from the air. This leads to a cold, clammy feeling and can encourage mold growth, even if the temperature is low. A properly sized unit runs longer, allowing it to both cool and effectively dehumidify, improving comfort and indoor air quality.

• Run fans in “auto” mode, not “on”
  • When your HVAC fan is set to "on," it continuously circulates air, even when the AC compressor isn't running. In humid climates, this can re-evaporate moisture from the AC coil back into your home, increasing indoor humidity. Setting the fan to "auto" ensures it only runs when the heating or cooling system is actively conditioning the air, allowing the coil to properly drain and maximizing dehumidification.

• Consider a whole-house dehumidifier
  • For homes in humid climates like ours, a whole-house dehumidifier works independently of your air conditioning system (or in conjunction with it) to maintain optimal indoor humidity levels (ideally between 40-50%). This is especially beneficial during seasons when the AC isn't running but humidity is still high. By controlling humidity, it significantly reduces the risk of mold growth, dust mites, and helps improve your Florida home’s overall comfort and air quality.

• Seal windows/doors and address sources of moisture
  • Unsealed windows and doors allow humid outdoor air to leak into your home, making it harder for your HVAC system to maintain comfortable humidity levels and bringing in outdoor pollutants. Also, addressing those internal moisture sources like leaky pipes, poorly vented bathrooms, or damp basements is another way to keep humidity levels down.

What are the best indoor air quality solutions for homes in humid climates like Florida?

• High-efficiency air filters - These filters, such as MERV 11 or higher, are essential for capturing airborne particles like dust, pollen, mold spores, and pet dander. In humid climates, mold spores are a particular concern, and high quality filtration helps to reduce their presence.
• Whole-home dehumidifiers - This is perhaps the most critical solution for humid climates. Excess humidity (above 60%) promotes mold growth, dust mites, and can make the air feel muggy and uncomfortable. A whole-home dehumidifier works with your HVAC system to maintain optimal humidity levels (ideally between 40-50%) throughout the entire house, preventing these issues.
• UV lights or air purifiers - UV (ultraviolet) lights can be installed within the HVAC system to kill mold, bacteria, and viruses as air passes through. Air purifiers (stand-alone or whole-home) can further enhance air quality by using various technologies (like HEPA filtration, activated carbon, or ionization) to remove pollutants, odors, and volatile organic compounds (VOCs). These are especially beneficial for those with allergies or asthma.
• Routine duct cleaning - Over time, dust, debris, and even mold can accumulate in HVAC ductwork, especially in humid environments. Routine cleaning (every 3-5 years, or more often if there are specific concerns like a mold problem or recent renovations) helps to remove these contaminants, preventing them from being recirculated into the living space and improving overall system efficiency.

Do you offer air purification systems or UV lights for HVAC units?
Yes, Stephen K. Denny offers air purifiers, UV lamps, and advanced filtration options. These can reduce allergens, bacteria, and mold.

How often should I have my air ducts inspected or cleaned in Florida?

We recommend that you inspect ducts every 3–5 years, or sooner if you notice dust buildup, mold, or airflow issues. Give us a call if you suspect that your duct system is causing you issues.

Can leaky or poorly insulated ducts affect my AC efficiency and energy bills?
Absolutely! Leaky ducts can waste up to 30% of cooled air, increasing energy bills and reducing your home’s comfort.

What are some other tips for lowering my cooling costs in Florida?

• Use ceiling fans, circulating air can reduce your AC use
• Shade windows (blinds, curtains, tint) especially for sun exposed rooms
• Set thermostat higher when away (or get a smart home system)
• Seal any air leaks in your home
• Schedule annual maintenance

Are there specific features on AC units that make them more energy-efficient beyond the SEER2 rating?

Yes! Look for these features:

Variable-speed Compressors

Variable-speed compressors adjust their output continuously to match heating or cooling demand, running longer at lower speeds. This results in quieter operation, better humidity control, and improved energy efficiency.

Multi-stage Cooling

Two-stage systems operate at a low and high capacity, running longer at the lower stage for better comfort. This improves dehumidification, maintains more consistent temperatures, and increases energy efficiency compared to single-stage systems.

Smart Thermostats

Smart thermostats optimize HVAC performance with features like remote control, learning capabilities, and humidity monitoring. They help maintain ideal comfort while improving energy efficiency and indoor air quality.

High-efficiency Coils

High-efficiency coils enhance heat transfer and moisture removal with larger surface areas and improved materials. This boosts system performance, reduces energy use, and improves indoor comfort in humid climates.

Humidity Control Features

Humidity control features include integrated dehumidifiers, smart thermostat settings, and modes that optimize moisture removal. These technologies help prevent mold, reduce indoor stickiness, and maintain healthier air quality.

Besides regular maintenance, what else can I do to extend the life of my AC unit in Florida's climate?

• Change filters regularly
• Keep outdoor unit clear of debris
• Use surge protection
• Address repairs promptly
• Maintain proper attic ventilation and insulation

Troubleshooting & Repairs

I need help troubleshooting an issue with my equipment.

Check your thermostat settings, breaker box, and air filters first. If the issue persists, call us—any DIY repairs can void warranties or cause damage.

My AC unit is blowing warm air, what could be the problem?

Here are some common causes for your AC unit to be blowing warm air:

• Dirty air filter
• Refrigerant leak
• Thermostat issues
• Electrical problems
• Frozen coils

Why is my air conditioner leaking water inside my house?

Here are some of the likely causes for leaking water issues:

• Clogged condensate drain line
• Frozen evaporator coil
• Improper installation of the system
• Low refrigerant levels

What does it mean if my AC is making a strange noise?

Unusual noises from your AC system can indicate:

• Loose parts
• Failing motor
• Debris somewhere in the unit
• Refrigerant issues

Call for service if you hear banging, grinding, or squealing.

Where can I get parts for my Trane equipment?

Through authorized Trane dealers, licensed HVAC technicians, or reputable parts suppliers. Avoid generic or unauthorized parts.

What type of refrigerant does my AC unit use, and is R22 still available?

• Units installed or manufactured before 2010 may use R22 (now phased out and expensive).
• Newer units use R410A or other eco-friendly refrigerants.
• If your unit uses R22, consider replacement due to rising costs and limited availability.

What does my warranty cover?

Typically, warranties cover major components (compressor, coil) for 5–10 years, but not labor or maintenance. Check your specific unit’s warranty for details.

Do you offer 24/7 emergency AC repair services?

Yes, we do! Call us now for an appointment!

What is your typical response time for an AC repair call?

Usually same day or within 24 hours during peak season, but response can vary based on demand and time of day.

System Life & Replacement Decisions

What is the life expectancy of my unit?

With proper maintenance, most central AC units last 10–15 years in Florida’s climate.

How do I know if it's time to replace my air conditioner instead of repairing it?

Consider replacement of your cooling system if:

• Your unit is 10+ years old
• Repair service calls are frequent or costly
• Energy bills are rising
• Cooling is inconsistent
• If your unit uses R22 refrigerant

Ductless Mini-Splits vs. Central AC: Which is Right for You?

• Ductless mini-splits: Great for additions, older homes without ducts, or zoned cooling. More flexible, efficient, but higher upfront cost per zone.
• Central AC: Best for whole-home cooling with existing ductwork. Lower cost per square foot, but less flexibility in zoning.
• Heat pumps are available in both ductless and central systems and offer both heating and cooling in one unit. They’re especially efficient in mild to moderate climates and can be a cost-effective, energy-saving alternative to traditional HVAC setups.