AC Installation
Frideric Prandecki, Co-Owner
March 5, 2026
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Vegas Homeowner Guide
Myth: high-MERV filters destroy your AC
Myth: change your filter every 90 days
Myth: this viral $15 fix will fix your AC
Myth: the filter looks fine, so the air is fine
Check any that match. Two or more, and it’s time for a diagnostic – not another guess.
These four causes account for most calls like this we run across the Las Vegas Valley – Summerlin, Henderson, Spring Valley, and everywhere in between.
The truth: it’s not the MERV rating — it’s the return. A MERV 11–13 filter captures the fine desert dust that a cheap fiberglass filter waves straight through to your coil. On a system with adequate return air, the pressure difference is a non-issue. On a system with a single undersized return — extremely common in Vegas tract homes — any dense filter, high-MERV or just dirty, pushes static pressure past what the blower can handle. If your system can’t breathe through a good filter, the finding isn’t “use worse filters.” It’s your airflow is undersized, and that’s costing you either way.
The truth: the box wasn’t written for the Mojave. National change intervals assume national dust. In a Vegas summer — construction nearby, desert wind, AC running 12+ hours a day — a filter can load up in 30 days or less. The right interval here isn’t a date, it’s a look: hold the filter up to light monthly during summer. If light barely passes, it’s done, whatever the calendar says. A loaded filter quietly becomes Myth 1: it strangles airflow just like an over-dense one.
The truth: usually half true — and the half matters. The viral tricks (clean your filter! hose your condenser coil!) describe real maintenance that really helps. What they skip is everything that requires opening the system: evaporator coil contamination, blower wheel buildup, refrigerant charge, duct leakage. If a $15 trick fixed your AC, your AC wasn’t broken — it was dirty. When it doesn’t fix it, the problem is in the part of the system no video tells you to look at, and that’s where an AC that runs but won’t cool usually lives.
The truth: the filter only catches what the duct system brings it. In many Vegas homes the real contamination enters after the filter — through leaking return ducts pulling in attic air, dust, and insulation fibers. That’s why homes can have a fresh filter and dust on every surface two days after cleaning. A clean-looking filter with a dusty house isn’t reassurance; it’s a clue that air is bypassing the filter entirely.
From Summerlin to Henderson, here is how we’re keeping homes across the Las Vegas Valley cool and comfortable.
We stopped by this Las Vegas home to replace a damaged 40×20 return air grille.
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We diagnose on-site, photograph what we find, and walk you through it before we recommend a single repair.
Every part and labor line itemized before we start. If we find something extra mid-job, we stop and call you before adding a dollar.
We fix the part that's failing. If a $40 capacitor solves it, that's the job — not a $1,200 replacement you didn't need.
We run the system, take a reading, and confirm the symptom that brought us out is gone. If it isn't, we stay and keep working.
Will a high-MERV filter strangle your AC? In this video, Bob's Repair takes apart the most common filter myth in Las Vegas: it isn't filtration that kills systems, it's neglect — a dirty coil, an undersized return, and a filter nobody has checked in a year. Here's how filtration, airflow, and maintenance actually interact.
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Been told to stick with the cheapest filter on the shelf? In this video, Bob's Repair explains why that advice costs you air quality through a 110° Vegas summer, when the system runs almost constantly and every bit of air in the house passes through that filter first. What to look at before you buy the next one.
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Everyone says change your filter — nobody says which one, or how often. In this video, Bob's Repair covers the few filter details that actually change how a Las Vegas system performs: matching the rating to your equipment, seating it so air can't bypass the frame, and setting a replacement interval based on your home rather than the box.
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Is the viral $15 capacitor fix worth trying? Partly. In this video, Bob's Repair separates the checks any homeowner can safely do — breaker, thermostat batteries, filter — from the part behind the electrical panel, where a capacitor holds a charge even with the power off. Two dangers that video skips, and the free checks worth doing before you call anyone.
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