3 Ways to Avoid HVAC Repair in Lewisville TX

By Luke Barbosa, Owner of Heat and Air Gurus

Let’s be real: no one wakes up excited to spend their hard-earned money on HVAC repairs. I’ve been serving homes in Lewisville, Castle Hills, and the surrounding areas for over two decades, and I’ve seen the same preventable issues pop up again and again.

So today, I’m letting you in on the top three ways to dodge unexpected breakdowns and expensive repairs.

I’m not just your typical HVAC guy; I’m your neighbor, and I want to help you stay comfortable without the drama (or the big repair bill). Here are three simple things you can do right now to keep your system running strong and avoid HVAC Repairs in Lewisville.

1. Change Your Air Filter — And Choose the Right One

This one might sound obvious, but you’d be shocked how many systems we get called to repair that are struggling just because of a clogged or incorrect filter.

Here’s the deal: your air filter isn’t just there to catch dust — it protects your blower motor, coil, your duct system, and yes — your lungs. A dirty filter will restrict airflow, make your system work harder, and a poorly fitted filter can let debris bypass the system entirely, eventually causing it to shut down altogether.

Tips for choosing the right filter:

• Don’t trust the label. The printed size on most filters is rounded. Instead, measure the actual dimensions of your filter slot with a tape measure.

• The filter should fit snug, but not so tight you have to wrestle it out.

• Avoid overly restrictive filters like some high MERV-rated or cheap 3M models unless your system is designed for them.

• If in doubt, give us a shout. We’ll recommend a filter that works with your system and lifestyle.

Changing your filter every 30–90 days (depending on your home conditions) can prevent many issues before they start. It’s the easiest way to avoid HVAC repair in Lewisville. If you have a thick, 4" furnace filter then changing it every 6 months is recommended.

Clean filters are just the start. See our full range of Indoor Air Quality Solutions.

FAQs:

How often should I change my HVAC air filter? Check your filter monthly and replace it every 1–3 months based on usage, allergies, and pets.

What do MERV ratings mean, and which should I choose? MERV = Minimum Efficiency Reporting Value. Most residential systems perform best with filters between MERV 6–13. Higher isn’t always better — it can restrict airflow if not properly matched to your system.

2. Know Your Drain Lines — And Keep Them Flowing

You know that small white pipe sticking out the side of your house? That’s not just a random piece of plastic — that’s your HVAC system’s emergency drain line.

It carries away all the moisture your system pulls from the air. In DFW, your primary drain usually ties into your home’s plumbing — often under a sink or bathtub. When it clogs? You’ve got a real problem on your hands.

Here’s what you should know:

• Once a season, pour a cup of white vinegar or bleach down the line (usually accessible via a T-fitting near your indoor unit).

• Know where your emergency drain goes. If you see water dripping from a pipe above a window or door, your main drain is clogged and your system’s in trouble.

• Understand where both drain lines terminate outside your home so you can check them seasonally.

Drain clogs can lead to water damage, system shutdowns, and even mold growth. If you’re not sure where to look, we’ll gladly walk you through it.

FAQs:

Why is my AC drain line prone to clogging? Warm, humid conditions in Texas make the perfect breeding ground for algae and mold. Dust and rust also build up, especially if maintenance is skipped.

Is bleach or vinegar better for clearing AC drains? White vinegar is generally safer and just as effective. Bleach can be used, but it should be handled cautiously.

3. Keep the Outdoor Unit Clean and Clear

Let’s talk about that big metal box outside — your condenser unit. It’s the workhorse of your AC system and needs a little TLC now and then.

To keep it running smoothly:

• Hose it off every few months to remove dust, grass clippings, and dirt. A standard garden hose works great — no pressure washer needed.

• Clear all vegetation at least 12–18 inches around the unit. Shrubs, vines, or fences too close can block airflow.

• Inspect it regularly. Look for bent fins, sinking feet, or damaged insulation.

• Make sure it’s level. A crooked or sunken condenser can damage the compressor and fan motor over time.

This simple maintenance step can dramatically improve system performance and prevent overworking your unit during peak summer heat.

FAQs:

Can I use a pressure washer to clean my outdoor unit? No. The pressure can damage the fins and reduce efficiency. Use a standard hose with light pressure.

How often should I clean my outdoor AC unit? At least once or twice a year — ideally before spring and summer. Also check after yard work or storms.

Avoid HVAC Repair in Lewisville TX: Prevent Now or Pay Later

By doing just these three simple things — replacing your filter, flushing your drain lines, and keeping your outdoor unit clean — you can avoid most of the emergency calls we see every summer in Lewisville.

But hey, if DIY isn’t your thing, we’ve got your back.

Heat and Air Gurus offers HVAC repairs in Lewisville TX! We also offer tune-ups, maintenance plans, and Guru Video Reports in Lewisville, Flower Mound, Highland Village and surrounding cities that show you exactly what’s happening with your system — without any pressure.

Call the Cow. Say Wow.

Let’s keep your comfort dialed in year-round! Call us today at 469-797-1269 (1COW)

Not the DIY type? Check out our HVAC Maintenance Plan — it includes free repairs, priority service, and more.

HVAC Replacement time near? Free HVAC Estimates available online. Transparency is what we specialize in!