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Air Conditioning · Lewisville, TX

Why Can't My AC Keep Up When It's Over 100 Degrees Outside?: A LewisvilleHomeowner's Guide

We wrote our original guide on this topic with North Texas homeowners in mind generally, but Lewisville has its own specifics worth calling out, especially for homes near Denton County.

For Lewisville Homeowners

We service homes throughout Lewisville, from those near Lake Lewisville to neighborhoods further out, and this topic comes up regularly regardless of which part of Lewisville ISD a home falls in. The fundamentals don't change by zip code, but knowing the local housing stock helps us know what to expect before we even arrive.

Lewisville, home to its own Lewisville ISD, is a large, well-established city along Lake Lewisville with a wide mix of home ages, from older homes closer to Old Town Lewisville to newer construction on the city's edges. That range means we regularly work on everything from decades-old systems to newer high-efficiency installs, often within the same neighborhood.

Lake LewisvilleOld Town Lewisville
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What the Full Guide Covers

  • The roughly 20-degree rule
  • Why the thermostat reading and the "feels like" temperature can differ
  • When it's the heat, and when it's an actual problem
Read the Full Guide: Why Can't My AC Keep Up When It's Over 100 Degrees Outside?

Need help with this in Lewisville?

Call (817) 935-8540

Lewisville FAQ

Does a bigger AC system fix this problem?+

Not necessarily, and it can create new problems. An oversized system cools quickly without properly managing humidity, which can leave a home feeling clammy even at the set temperature. The better answer is usually a correctly sized system paired with good insulation and maintenance, not simply going bigger.

Should I lower my thermostat setting during extreme heat to compensate?+

Setting it well below a realistic target usually just means the system runs constantly without ever satisfying the thermostat, which doesn't actually get you there faster and adds unnecessary wear. A more realistic setting for the conditions, combined with good airflow and shading where possible, is usually more effective.

Does this apply to homes in Lewisville specifically?+

Yes. The guidance in this article applies to residential HVAC systems throughout Lewisville and the rest of our service area. If you want a read on your specific system, call us at (817) 935-8540 or request an estimate and mention you're in Lewisville.

Have a question about your system in Lewisville?

Call now or request an estimate, and we'll follow up with clear, honest next steps.

Call (817) 935-8540

Appointment windows reflect our best estimate and are not a guaranteed arrival time.