Replace Your System Before It Fails

New HVAC installation and system replacement services for homes and businesses in Eustis, Florida.

Your air conditioner may be running, but if it struggles to cool your Eustis home below seventy-eight degrees or racks up electric bills above two hundred dollars a month, replacement will save you more money than repeated repairs. Older systems lose efficiency as compressors wear out, refrigerant leaks develop, and coils corrode from years of exposure to humidity. St. Louis Air Conditioning installs modern, energy-efficient systems sized correctly for Florida homes and businesses.

We provide new AC installation, system upgrades, and energy-efficient replacements for homeowners facing frequent breakdowns or rising energy bills. Our technicians perform load calculations to determine the correct system size based on your square footage, insulation, window placement, and local climate conditions. We have experience with replacements in both older homes and newer construction across Lake County, focusing on long-term performance, comfort, and system reliability.

Request a free estimate for HVAC installation or replacement in Eustis today.

What replacement involves from start to finish

When you schedule a replacement in Eustis, we start by calculating your home's cooling load using Manual J software, which accounts for insulation levels, ceiling height, and window area. This calculation ensures your new system runs efficiently without cycling on and off every few minutes or failing to reach your thermostat setting.

After installation, you will notice colder air at the registers, lower monthly utility bills, and quieter operation from both the indoor and outdoor units. Your home will reach your desired temperature faster and hold it more consistently between rooms, even during the hottest afternoons in July and August.

We remove your old system, install the new air handler and condenser, connect refrigerant lines, and test airflow at every vent to confirm balanced distribution. We also upgrade thermostats to programmable or smart models that reduce energy waste when you are away from home. Installation typically takes one full day for a standard split system, though larger homes or complex ductwork modifications may require additional time.

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Most homeowners want to know a few things first

Homeowners in Eustis often ask about system sizing, energy savings, and whether they should replace now or wait until their current system stops working entirely.

How do I know what size system I need?
We perform a load calculation that measures your home's square footage, insulation, and window exposure. Oversized systems waste energy by short-cycling, while undersized systems run continuously without cooling your home adequately.
Will a new system lower my electric bill?
Modern systems with higher SEER ratings use less electricity to produce the same cooling output. Homeowners often see reductions of twenty to forty percent on their cooling costs after replacing a system that is more than ten years old.
Should I replace my system before it breaks?
Replacing your system before it fails lets you choose equipment carefully and schedule installation at your convenience. Emergency replacements often limit your options and may result in higher costs or longer wait times during peak summer demand.
What happens to my old equipment?
We remove and dispose of your old air conditioner according to EPA regulations, which require proper refrigerant recovery and recycling. You do not need to arrange disposal or haul anything away yourself.
Do you offer financing for new installations?
Yes, we work with financing partners to help homeowners spread installation costs over manageable monthly payments. Contact us to learn about current offers and approval requirements.

St. Louis Air Conditioning has replaced systems in homes built in the 1970s with minimal insulation and in new construction with spray foam and low-e windows, so we understand how different building conditions affect system performance and sizing. Contact us to request a free estimate or schedule an installation consultation in Eustis today.