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If you’ve got a larger home or high cooling demands and are eyeing a premium AC unit, especially something like a 5 ton variable speed air conditioner rated at 18 SEER, you’re asking exactly the right questions. I’m Jake Lawson, HVAC technician and household systems junkie, and I’ve installed more of these big systems than I can count. In this guide, I dive into when going with a 5-ton 18 SEER variable speed system makes sense—and when you’re better off right-sizing or considering other options.

Frozen evaporator coil? Don’t panic—Savvy Mavi’s got your back. Learn what causes that icy mess, how to thaw it out safely, and what steps to take to keep your HVAC system cool (not frozen!) all season long.

Sizing your evaporator coil isn’t guesswork—it’s science, airflow, and a touch of shopping savvy. In this guide, we break down BTU-to-tonnage matchups, compatibility with your condenser and furnace, and how to dodge costly mistakes when selecting a coil. Bonus? You’ll leave feeling like the coil whisperer of your home.

Not all HVAC coils are created equal—and neither are the homes they go in! In this fun, no-fluff breakdown, Savvy Mavi walks you through the real-world pros and cons of vertical and horizontal evaporator coils. Whether you’re remodeling your space or just upgrading your system, this guide will help you match your setup with the right coil—without the guesswork.

Hear a hiss? Smell something funky near your furnace? Spot a puddle where there shouldn’t be one? You might be dealing with a leaky evaporator coil—yep, that hidden MVP of your cooling system. In this guide, I’ll explain what causes leaks, how to spot ‘em early, and what to do when drip turns into disaster.

When your AC just isn’t delivering the cool like it used to, it might not be your thermostat—or your imagination. The real culprit? Your evaporator coil could be past its prime. In this no-fluff guide, I’ll help you spot the red flags, decide if a replacement is worth it, and understand what to expect when you make the switch.

Dust bunnies, meet your match. Your evaporator coil does the dirty work of keeping you cool, but when it’s clogged or gunky, your whole HVAC system can struggle. In this upbeat DIY guide, I’ll walk you through cleaning your indoor coil—tools, cleaners, pro tips, and when to call in backup.

PTAC units aren't just for hotels anymore. This guide explains how today’s models deliver efficient room-by-room comfort while blending seamlessly into your interior design

Struggling with sticky indoor air? This guide compares how window and wall (mini-split) ACs handle moisture removal. You’ll learn why wall units dehumidify more effectively with longer runtimes and inverter technology, while window units are best for short-term use in small spaces.

Wondering whether a mini-split or window AC fits your space and budget best? This guide breaks down real-world energy use, SEER efficiency ratings, cooling costs, and lifespan differences between the two systems. 

This in-depth guide breaks down how Seasonal Energy Efficiency Ratio (SEER) ratings affect your cooling expenses, home comfort, and system payback. You’ll learn how SEER is calculated, why higher ratings matter in hot regions.

Window or wall AC what is smarter in 2025? This guide breaks down the real-world pros, energy savings, app features, and installation needs of each.