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Reparación de Termostatos en Los Angeles

Diagnóstico de termostato — determinamos si el problema es el termostato o el sistema HVAC.

(323) 970-3113Free estimate
CSLB #1073586
CA Licensed
5.0 Stars
300+ Reviews
Owner-Led
Local LA team
Same Day
Service available
24/7
Emergency calls
About this service

What to expect from our thermostat repair team

### Reparación de Termostato vs. Reemplazo de Termostato Cuando tu sistema HVAC no funciona correctamente — no responde a los cambios de temperatura, hace ciclos cortos, funciona de forma continua — el termostato suele ser lo primero que los propietarios sospechan. A veces tienen razón. Pero como un termostato defectuoso produce los mismos síntomas que muchas fallas en el equipo HVAC, un diagnóstico preciso es esencial antes de intentar cualquier reparación. LC Heating & Air diagnostica problemas de termostato en todo el condado de Los Angeles y distingue entre fallas del termostato y fallas del equipo antes de recomendar cualquier reparación.

Book Thermostat Repair today.

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CSLB #1073586
Same-day service
5.0★ Google · 300+ reviews

Descripción General

  • ### Cómo Diagnosticamos Problemas de Termostato Nuestro proceso de diagnóstico de termostato revisa el termostato tanto de forma individual como en relación con el sistema HVAC. Verificamos que el termostato esté leyendo la temperatura ambiente con precisión (una falla del sensor de temperatura causa ciclos incorrectos). Comprobamos que el termostato envíe las señales correctas de 24VAC al equipo HVAC cuando solicita calefacción o enfriamiento. Revisamos el voltaje del transformador para confirmar que el circuito de control tiene energía adecuada. Verificamos el cableado en los terminales del termostato — los cables sueltos y las terminales corroídas son una fuente común de problemas intermitentes.
  • ### Cuando la Reparación es una Opción Las reparaciones de termostatos mecánicos (limpieza de contactos en tipos de termostato más antiguos) y las reparaciones de cableado (arreglar terminales corroídos o sueltos, reparar tramos de cable dañados) son apropiadas cuando la carcasa y la electrónica del termostato están en buen estado. La mayoría de los termostatos electrónicos modernos — cuando los componentes electrónicos han fallado — son más rentables de reemplazar que de reparar. Te asesoramos con honestidad sobre si la reparación o el reemplazo tienen más sentido para tu termostato específico.
  • ### Problemas Comunes de Termostato que Resolvemos Los problemas más comunes: pantalla en blanco o sin respuesta (baterías agotadas, fuente de alimentación fallida o falla del transformador), lectura de temperatura que no coincide con la temperatura de la habitación (sensor NTC fallido), funcionamiento intermitente del sistema (terminales corroídos, cable suelto o tarjeta de control al límite), y sistema que no cambia entre modo calefacción y enfriamiento (error de cableado, selector de modo fallido o falla en el termostato de bomba de calor).

Our Service Benefits

Aislamiento preciso de fallas
Determinamos si el problema es el termostato o el equipo HVAC — no todos los "problemas de termostato" son realmente fallas del termostato.
Inspección de cableado incluida
Revisamos todo el cableado del termostato en busca de corrosión, terminales sueltos y daños que causan problemas intermitentes.
Orientación sobre reparar o reemplazar
Te asesoramos con honestidad si tu termostato específico vale la pena reparar o si el reemplazo es más rentable.
Resolución el mismo día
La mayoría de los problemas de termostato se diagnostican y resuelven en una sola visita.

Thermostat Repair Cost in Los Angeles

Pricing ranges for common thermostat repair services. Your actual cost depends on equipment, complexity, and home configuration. We provide an exact written estimate before any work begins.

Diagnóstico de termostato
$125–$175
Instalación de termostato
$175–$350
Actualización a termostato inteligente
Incluye dispositivo y programación
$250–$500

Service calls start at $125. Prices include parts and labor unless noted. Financing available on equipment installations. Learn about financing →

What Los Angeles Homeowners Say

LC fue la única empresa que hizo un cálculo Manual J. El nuevo sistema enfría mejor, funciona más silencioso y cuesta menos operarlo.

T
Tom W.Woodland Hills, CA

Cambiamos de caldera de gas a bomba de calor. LC gestionó el papeleo de TECH Clean California — obtuvimos un reembolso de $2,500 más el crédito federal.

M
Michael D.Eagle Rock, CA

LC reemplazó todo nuestro sistema HVAC. Leo nos explicó cada opción sin presionarnos. El equipo de instalación fue profesional y dejó todo limpio.

D
David K.Pasadena, CA
Warning signs

Signs you need thermostat repair

La pantalla del termostato está en blanco, congelada o parpadea sin responder
La lectura de temperatura no coincide con la temperatura real de la habitación
El sistema arranca y se detiene sin mantener la temperatura (posible falla del termostato)
El sistema funciona de forma continua y no se apaga
Se escucha un clic en el termostato pero el sistema no responde
El termostato tiene 10–15+ años y su funcionamiento se ha vuelto poco confiable

Not sure if you need service? Call us — we'll give you an honest answer.

(323) 970-3113 — Free diagnosis
How it works

Our thermostat repair process

01

Evaluación de síntomas

Documentamos el comportamiento específico y revisamos primero los puntos obvios — baterías, interruptores de circuito, conexiones de cableado.

02

Diagnóstico del termostato

Probamos la precisión del sensor de temperatura, verificamos las señales de control de 24VAC y revisamos el voltaje del transformador.

03

Prueba de respuesta del sistema

Puentemos los terminales del termostato directamente en el equipo para confirmar si el equipo responde correctamente cuando se le envía la orden de forma directa.

04

Reparar o reemplazar

Reparamos las fallas reparables (cableado, terminales) o reemplazamos el termostato con una unidad compatible.

Customer Reviews

300+ verified reviews

5.0
Google Reviews196 reviews on Google
SM
Sharon Meoded
Los Angeles, CA

Lior and his team installed an AC unit in my room that doesn’t have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professional

Google Review
PW
Patricia Williams
Los Angeles, CA

LC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!

Google Review
NE
Naomi Eagleson
Los Angeles, CA

I hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!

Google Review
OI
Osher Itzhaki
Los Angeles, CA

Amazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!

Google Review
JS
Justin Shapiro
West Hollywood, CA

Great experience!!’ Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommended

Google Review
GH
Greg Haroutunian
Los Angeles, CA

Sunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!

Google Review
AV
Adam Valdies
Los Angeles, CA

Leo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!

Google Review
LO
Leeyam Ohayon
Los Angeles, CA

I called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.

Google Review
AY
ariel. yona.
Los Angeles, CA

Amazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I can’t express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommended

Google Review
KB
kevin benoit
Los Angeles, CA

I cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do it

Google Review
SM
Sharon Meoded
Los Angeles, CA

Lior and his team installed an AC unit in my room that doesn’t have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professional

Google Review
PW
Patricia Williams
Los Angeles, CA

LC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!

Google Review
NE
Naomi Eagleson
Los Angeles, CA

I hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!

Google Review
OI
Osher Itzhaki
Los Angeles, CA

Amazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!

Google Review
JS
Justin Shapiro
West Hollywood, CA

Great experience!!’ Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommended

Google Review
GH
Greg Haroutunian
Los Angeles, CA

Sunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!

Google Review
AV
Adam Valdies
Los Angeles, CA

Leo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!

Google Review
LO
Leeyam Ohayon
Los Angeles, CA

I called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.

Google Review
AY
ariel. yona.
Los Angeles, CA

Amazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I can’t express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommended

Google Review
KB
kevin benoit
Los Angeles, CA

I cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do it

Google Review
Review us on GoogleReview us on Yelp
Service areas

Thermostat Repair — by city

Licensed thermostat repair throughout Greater Los Angeles — select your city for neighborhood-specific service details.

Thermostat Repair in Los Angeles
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FAQ

Common questions about thermostat repair in Los Angeles

¿Cómo sé si mi termostato está descompuesto o si el sistema HVAC está descompuesto?
La prueba de campo más simple: puentea los cables R y Y en los terminales del termostato (o en la tarjeta de control del equipo). Si el sistema arranca al puentearlo, el termostato o su cableado no está enviando la señal de comando. Si el sistema no arranca al puentearlo, el equipo mismo tiene una falla. Realizamos este diagnóstico en cada llamada de servicio relacionada con termostatos.
La pantalla de mi termostato está en blanco. ¿Está descompuesto?
Generalmente no. Primero revisa las baterías (la mayoría de los termostatos muestran un indicador de batería baja, pero las baterías pueden agotarse de repente). Luego revisa el interruptor de circuito del sistema HVAC — un interruptor cortado elimina la energía al termostato. Si las baterías están bien y hay corriente, la fuente de alimentación del termostato o el transformador de control del HVAC pueden haber fallado.
¿Puedo reparar un termostato yo mismo?
El cambio de baterías y el apriete de cables sueltos son reparaciones que puede hacer el propietario. Más allá de eso, el bajo costo de reemplazar un termostato en comparación con las piezas de reparación hace que la reparación por cuenta propia rara vez valga la pena. Si el problema es el cableado, nosotros podemos arreglarlo; si la electrónica falló, el reemplazo es la respuesta práctica.
¿Cuánto cuesta la reparación de un termostato?
Reparaciones simples como apretar cableado suelto o limpiar contactos: generalmente se atienden como parte de la llamada de servicio de diagnóstico ($85–$125). Si el termostato requiere reemplazo, el costo es de $150–$450 dependiendo del termostato de reemplazo seleccionado. Proporcionamos un presupuesto por escrito después del diagnóstico.
Mi termostato marca una temperatura incorrecta. ¿Qué significa eso?
Los termostatos electrónicos usan un termistor NTC (coeficiente de temperatura negativo) para medir la temperatura ambiente. Estos sensores pueden desviarse con el tiempo o fallar por completo, haciendo que la temperatura mostrada tenga varios grados de diferencia con la temperatura real de la habitación. Cuando la lectura de temperatura del termostato es incorrecta, el sistema hace ciclos en el momento equivocado. El reemplazo del termostato resuelve esto.
Mi sistema funciona de forma continua y no se apaga. ¿Es el termostato?
Podría ser. Un termostato con contactos de relé atascados sigue enviando la señal de "encendido" incluso cuando se ha alcanzado la temperatura programada. Haz la prueba apagando el termostato por completo — si el sistema sigue funcionando, el problema está en la tarjeta de control del equipo HVAC, no en el termostato. Si el sistema se detiene al apagar el termostato, es probable que el termostato sea la falla.
¿Reparan termostatos inteligentes?
Las fallas de hardware en termostatos inteligentes (falla del módulo Wi-Fi, falla de pantalla) generalmente no son reparables de forma rentable — se reemplaza el dispositivo. Podemos resolver problemas de configuración de termostatos inteligentes, problemas de cableado y problemas de compatibilidad que causan un funcionamiento incorrecto del sistema. Estos generalmente se pueden resolver sin reemplazar el termostato.
El termostato de mi bomba de calor hace que mi sistema funcione en modo enfriamiento cuando pido calor. ¿Por qué?
Esto es casi siempre un problema de configuración del cable O/B. Los termostatos de bomba de calor tienen un terminal O/B que controla la válvula inversora. El termostato necesita configurarse según si el cable O/B activa la válvula en modo calefacción (cableado B, estándar Rheem/Ruud) o modo enfriamiento (cableado O, la mayoría de las demás marcas). Una configuración incorrecta del O/B hace que la bomba de calor funcione en el modo equivocado.
Verified Reviews

What customers say about thermostat repair

Verified reviews from Los Angeles homeowners who used our thermostat repair service.

5.0 ★ Google
300+ verified reviews

LC installed a Nest thermostat and programmed it for our schedule. They also found that our secondary heat exchanger had a small crack during the check-in — caught a potential CO issue before it became dangerous.

S
Sandra K.
Brentwood, CA · Nov 2025

Our AC stopped working during a heat wave and LC had a technician here within two hours. He diagnosed a bad capacitor, had the part on his truck, and fixed it on the spot. Fair price, no upsell. Will use again.

M
Maria R.
Sherman Oaks, CA · Aug 2025

LC replaced our entire HVAC system — new Carrier condenser, furnace, and coil. Leo walked us through every option without pressure. The install team was professional and clean. System runs perfectly and our electricity bill dropped about 30%.

D
David K.
Pasadena, CA · Nov 2025
Read all 300+ Google reviews →
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