Purified Air Heating and Air Conditioning
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Trusted Thermostat Repair in Highland Park, CA

If you’ve ever walked into your home expecting relief from the heat, only to find yourself sweating like you never left the sun, then your air conditioner may have quit on you. And while that might be true, don’t be too quick to blame the big machine outside. Sometimes, the issue is a lot closer - right on the wall, in fact.

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Purified Air technicians servicing an outdoor AC unit

Request Thermostat Repair in Highland Park, CA

If you’ve ever walked into your home expecting relief from the heat, only to find yourself sweating like you never left the sun, then your air conditioner may have quit on you. And while that might be true, don’t be too quick to blame the big machine outside. Sometimes, the issue is a lot closer - right on the wall, in fact.

Technician testing a Lennox air conditioner

Why the Thermostat Matters

Think of your thermostat as the remote control for your HVAC system. You set your preferred temperature, and the thermostat signals your furnace or air conditioner to get to work. It monitors the room temperature and cycles the system on or off as needed to maintain the climate you’ve selected.
That’s why your thermostat should be one of the first things you check when your home feels too warm or too cold.

Common Thermostat Problems

Thermostats may seem simple, but they can run into a range of issues. Here are some of the most common ones we get called out to quickly fix:
As a full-service HVAC company, Purified Air has regularly-trained technicians with stocked vehicles. Our professionals come out with the parts, materials, and tools to handle most repairs the first time around.

  1. Incorrect Temperature Readings

    If the thermostat is not sensing the correct room temperature, then it can cause your system to run longer or shut off too soon.

  2. Unresponsive Controls

    Pressing buttons or touching the screen with no response is a clear sign something’s wrong.

  3. Short Cycling

    If your HVAC system turns on and off rapidly, then the the thermostat could be sending mixed signals.

  4. Display Issues

    A blank or flickering screen might indicate a wiring problem or dead battery.

Current Special

First Responders

New customers only. Call for more details.

Summer Maintenance

New customers only. Call for more details.

626-621-2220

Testimonials

Our Customers Love Our Services

Jhoanna Lara

Purified Air Heating and Air Conditioning did a fantastic job fixing my AC when it wasn’t cooling properly. The technician quickly identified the problem and resolved it efficiently. Great service

Addison

I had a great experience with them. Roman was prompt, honest, and offered fair pricing. They were easy to get in touch with and had my issue resolved day of.

Jose Medrano

During the rain I needed my heater to work. Purified Air came checked and made sure my air was like new running like new. They are reliable, easy to work

Kandice Banville

I recently hired Purified Air Inc. to service my heating and air system, and they exceeded all my expectations! From the moment I contacted them, their team was professional, courteous,

Jose Porras

Purified Air Heating and AC has been amazing with our routine maintenance. They’re always on time, professional, and leave everything running smoothly. I feel confident knowing my system is in

Anthony Moreno

Purified Air installed a new AC unit in my home, and I am extremely impressed with their service. The team was punctual, professional, and very knowledgeable. They completed the installation

Tara Avery

Had a really great experience with Roman (owner). Initially my unit’s issue was misdiagnosed by a tech, which lead to needing a callback. Roman reached out to me personally via

Jocelyn Villanueva

I greatly appreciate the excellent service I received from Purified Air Heating and Air Conditioning. They installed a new HVAC system in my home, and the technicians were very respectful

esme diaz

Purified Air Heating and Air Conditioning installed a new HVAC system in my home, and I couldn’t be happier with the results. They provided a range of financing options that

gabriela gamboa

I called Purified Air Heating and Air Conditioning during a heat wave when my AC stopped working. They were amazing! The technician was friendly, knowledgeable, and fixed the problem quickly.

Jaime Del toro

Very good yob experts. Purified Air did a great job installing our new AC. The team was friendly and worked fast. They made sure everything was working before they left. The

Dulce Ramirez

Purified Air installed a new air conditioning and heating system in my home. The team was professional and knowledgeable, helping me choose the best system. The installation was seamless, and

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