Battling the Heat: A Maryville Homeowner’s AC Replacement Journey

Heating and Air Conditioning Maryville Heating and Air Conditioning in Maryville

Case Overview

One summer morning in Maryville, a homeowner discovered their air conditioning had completely shut down. No cool air came through the vents and the drain pan was overflowing. With temperatures rising, they contacted HEP for help.

Upon arrival, the HEP technician found standing water in the drain pan and an indoor coil that had begun to leak refrigerant. Faced with an aging split system and no quick fix in sight, the homeowner was offered both repair and full-replacement options.

How It Was Solved

After discussing long-term comfort and efficiency, the homeowner chose a complete system upgrade. Here’s a summary of what the HEP team did:

Safely removed the old furnace from the attic and the outdoor condenser between the houses.
Installed a new 3.5-ton high-efficiency split system with a gas furnace and air handler.
Set the outdoor unit on a reinforced concrete pad and hooked up fresh electrical connections.
Fitted a new condensate pan, pump and insulated drain line for reliable moisture removal.
Connected and pressure-tested the refrigerant lines, then charged the system to factory specifications.
Installed a modern thermostat and verified airflow and temperature performance.

Within hours, cool air was flowing once more, and the homeowner had full confidence in their upgraded system.

Newly installed outdoor HVAC condenser unit next to a brick home, set on a stable pad and surrounded by clean landscaping rocks.

Inside the Attic: Indoor Unit Upgrade

The old air handler had to be lifted through a small attic hatch. Using a ladder and a hoisting line, the HEP technician safely removed the worn-out unit and put the new air handler into place.

The new attic air handler with insulated ductwork and a clean condensate pump, ensuring efficient operation in the home’s upper space.

All connections were sealed, ducts re-attached, and a fresh condensate pan and pump installed to prevent future water buildup.

A well-installed air handler unit with sealed connections and clear labeling, highlighting professional installation standards.

Step by Step: From Box to Breeze

Unpacking a new furnace and positioning it correctly is more than just lifting a box. The HEP technician:

Prepared the attic platform and removed the old steps.
Lowered the new furnace on a sturdy board and guided it into place.
Hooked up gas, power and the exhaust flue.
Added safety switches and verified every connection.

The newly unboxed furnace awaiting installation, demonstrating careful handling and setup by the HEP technician.

In-Action: Skilled Installation

Precision matters. While working through an attic hatch, our technician made sure all lines were routed neatly and every joint was secure.

A HEP technician working in an attic access point, using a ladder to safely install HVAC components.

Documentation and Testing

Before wrapping up, the outdoor unit’s specification label was checked to confirm refrigerant type, electrical requirements and warranty details—key for future service calls.

Close-up of the outdoor unit’s specification label, a key reference for ensuring correct setup and future maintenance.

Tips for Homeowners

Keep the drain pan clear. Check for standing water every few months to prevent overflow and corrosion.
Ensure good airflow. Trim plants and debris around the outdoor unit to help it breathe.
Record key details. Take a picture of the data label on your outdoor unit for quick reference during service calls.
Schedule regular checks. An annual tune-up by a qualified HEP technician can catch small issues before they grow.
Consider energy upgrades. If your system is over 10 years old, a high-efficiency replacement may save on utility bills and provide better comfort.

By staying proactive, Maryville homeowners can enjoy reliable heating and cooling all year long—just like this customer after their full system upgrade.

Published on November 7, 2025