Expert Steps to a Hassle-Free HVAC Replacement in Johnson City

Heating and Air Conditioning | Johnson City | Heating and Air Conditioning in Johnson City

Customer Issue

A homeowner in Johnson City reached out after discovering that their more-than-20-year-old system, tucked away in a crawl space, was no longer delivering warm or cool air. Previous attempts to schedule service had fallen through, and the unit simply wouldn’t power up. Frustrated and with the seasons changing, they needed a reliable heating and cooling solution—and fast.

How It Was Resolved

A HEP technician arrived on site to assess the aging equipment and discuss options. After reviewing the home’s layout and the condition of existing ductwork, a full replacement with a modern split heat-pump system was recommended. Key steps included:

Removing the old air handler and outdoor condenser
Installing a 2.5-ton, 14.3 SEER heat-pump system with R-454B refrigerant
Mounting the new outdoor unit on a hurricane-proof concrete pad
Securing a new Unistrut support, drain pan and safety-shutoff switches
Replacing deteriorating duct-board plenums with sturdy metal supply and return boxes
Updating the electrical disconnect and whip, plus installing a new thermostat
Verifying performance (cooling at 23°F split, heating at 26°F split)
Completing a UV light addition and final system checks

Everything was financed through the homeowner’s preferred program, and the job wrapped up with the system running smoothly—even after working through some rain. A five-star review followed shortly after.

New outdoor HVAC condenser unit with water droplets

What Homeowners Can Learn

1. Know When It’s Time to Replace
Systems older than 15–20 years often struggle with efficiency and reliability. If your unit won’t start, makes unusual noises, or simply can’t keep up, a modern replacement can save energy and worry.

2. Support and Drainage Matter
Proper hanging with Unistrut, a level drain pan, and safety-shutoff switches protect against leaks and structural damage.
HEP technicians always ensure new hardware is correctly installed.

Outdoor unit on a sturdy pad with technician’s tools nearby

3. Upgrade Your Ductwork
Old duct-board plenums can deteriorate over time. Swapping them for metal supply and return boxes improves airflow and indoor air quality.

4. Seal and Protect All Lines
Sealing refrigerant and electrical lines at the entry point prevents moisture, pests, and energy loss.
A neat, weather-tight seal is a mark of professional service.

Refrigerant line entry sealed against brick wall

Maintenance Advice

Keep the Area Clear: Trim vegetation around the outdoor unit and remove dust from the crawl space.
Check Electrical Disconnects: Make sure covers are closed and wiring is weatherproof.
Schedule Annual Tune-Ups: A fall and spring inspection by a HEP technician helps catch small issues before they become big problems.
Replace Filters Regularly: Clean filters help your system breathe easier and extend its lifespan.

New disconnect box neatly mounted on home exterior

Wrapping Up

This Johnson City project shows how a complete system overhaul—handled by skilled HEP technicians—can restore comfort, efficiency, and peace of mind. Whether you need [Heating and Air Conditioning] services or a full replacement, the right upgrade makes all the difference. If your system is nearing retirement age or simply isn’t performing, consider these tips and reach out for professional advice.

Published on September 22, 2025