Thermostat Replacement in Lewisville, TX

Compare quotes from 38 verified local mechanics

4.8/5 Rating

Verified Mechanics

30 Min Response

$150-$300

Average Cost in Lewisville

🌡️

Get Thermostat Replacement in Lewisville

A failing thermostat can cause your engine to overheat in minutes, especially dangerous in Lewisville's intense summer heat. Whether your heater is blowing cold air in January or your temperature gauge is spiking while stuck in traffic on I-35E, you need a reliable fix fast.

Lewisville drivers face unique challenges with extreme temperature swings—from 100°F summers to occasional freezes—putting extra stress on cooling systems. Our network of 25 ASE-certified mechanics across Lewisville can diagnose and replace your thermostat before it causes permanent engine damage. From Lewisville Lake to Vista Ridge Mall, we connect you with trusted local shops that understand Lewisville vehicles.

💰 Local Pricing in Lewisville

Budget-Friendly

$100

Most Common

$200

Premium Service

$400

Lewisville thermostat replacement typically costs between $150-$300 for most vehicles. Dealerships often charge $350-$450, while independent shops in our network offer competitive rates without sacrificing quality.

Price factors in Lewisville:

Parts ($30-$80 for thermostat, gasket, and coolant) plus labor ($120-$220 for 1-2 hours). Luxury vehicles or difficult engine access (like some V6/V8 configurations) may cost more.

📍 Neighborhoods We Serve in Lewisville

Old Town Lewisville (75057)

Castle Hills (75056)

Highland Village (75077)

Lake Vista (75057)

Arbor Creek (75067)

The Highlands (75077)

Valley Ridge (75067)

Westlake (75056)

Garden Ridge (75077)

Railroad District (75057)

Castle Hills East (75056)

Fox Hollow (75067)

Can't find your neighborhood? Don't worry - we serve all of Lewisville, TX. Get quotes from mechanics nearest to you.

🔧 Common Thermostat Replacement Issues in Lewisville

Thermostat Stuck Closed - Engine Overheating

When the thermostat valve sticks closed, coolant can't flow to the radiator. In Lewisville's summer heat, this causes rapid overheating—often within minutes of driving. Pull over immediately if your temp gauge hits the red zone.

Typical cost: $150-$350

Thermostat Stuck Open - No Cabin Heat

A stuck-open thermostat prevents your engine from reaching optimal temperature. You'll notice weak or no heat from cabin vents in winter, plus reduced fuel economy year-round since the engine runs too cold.

Typical cost: $150-$300

Erratic Temperature Gauge Fluctuations

If your temperature needle bounces up and down erratically on Sam Rayburn Tollway, the thermostat mechanism is likely jamming intermittently. This can progress to complete failure—don't wait.

Typical cost: $150-$400

⭐ What Lewisville Drivers Say

★★★★★

5/5

"My engine started overheating on I-35E near Lewisville Lake. Got 3 quotes within 20 minutes and found a shop that did it same-day for $180. Saved me from the dealership's $420 quote!"

Sarah M.

Old Town Lewisville, Lewisville

Thermostat Replacement

★★★★★

5/5

"Temperature gauge was all over the place driving through Lewisville. Used this service and got a mechanic near Vista Ridge Mall to fix it fast. Great price, honest work. Highly recommend for Lewisville drivers."

Carlos R.

Castle Hills, Lewisville

Thermostat Replacement

★★★★★

4.5/5

"No heat in my car during that cold snap in January. Found a shop in Lewisville that diagnosed it as a stuck thermostat and replaced it for $195. Much better than I expected!"

Jennifer L.

Highland Village, Lewisville

Thermostat Replacement