Full HVAC Replacement After a 20-Year-Old AC Unit Failed
A broken thermostat turned out to be the least of the problem. Here's how Lior diagnosed a failing 20-plus-year-old AC system, replaced it, and rebuilt the home's insulation and ductwork in the same job.
Lior, the owner, struck me as very knowledgeable and checked every detail of the problembefore finding the best solution. He will tell you directly what the problem is, offer the options formy financial comfort level, and let me decide without any scare tactics. Immediately felt thebenefits of clean, healthy, fresh air blowing through the vents from the new insulation.
A homeowner in Las Vegas reached out after her thermostat broke and the AC stopped working. Air Duct LV first installed a new thermostat the homeowner had purchased, but the AC still wasn't cooling. On further inspection, Lior identified the real issue: a 20-plus-year-old AC unit that had reached the end of its life and needed a full HVAC installation, not another repair. Rather than pushing a hard sell, Lior laid out the options at different price points and let the homeowner choose. She went with a mid-tier Amana unit backed by a lifetime compressor guarantee. While on site, the crew also discovered the home's attic insulation was old and patchy, with deteriorated sealing dragging down the new system's efficiency, so an attic insulation upgrade was added, along with a full air duct cleaning and dryer vent cleaning.
The Problem
A Broken Thermostat Was Hiding a Bigger Issue
The homeowner's first assumption was reasonable: the thermostat had failed, so replacing it should fix the AC. But after Air Duct LV installed the new thermostat, the system still wasn't cooling the home. That pointed to something deeper. On inspection, Lior traced the real problem to the AC unit itself, over 20 years old and past the point where an HVAC repair would hold. Compounding the issue, the attic insulation hadn't been touched in decades either: old, patchy material with deteriorated sealing was letting conditioned air escape, forcing whatever cooling the system could produce to work even harder.
The Process
How Lior and the Team Handled the Job
01
Diagnosis and honest options
After the new thermostat didn't solve the problem, Lior checked every detail before landing
on the real cause: a 20-plus-year-old AC unit at the end of its life. Rather than pushing the
most expensive fix, he laid out options across different price points and let the homeowner
decide without pressure.
02
AC unit replacement
The homeowner chose a mid-tier Amana unit, backed by a lifetime guarantee on the
compressor. The crew removed the old, failing system and installed the new unit, restoring
reliable cooling to the home.
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03
Old insulation removed and replaced
With the attic already open for access, the crew removed the old, patchy insulation and
deteriorated sealing that had been dragging down the home's efficiency for years, replacing
it with new material so the new AC unit wouldn't have to work against a leaking attic.
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04
Duct and dryer vent cleaning, documented on video
The crew cleaned out all the air ducts and dryer ducts, working through the attic on a hot
day to finish the job in one visit. They showed the homeowner video of the completed attic
work before cleaning up and hauling away all the old debris.
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