(619) 273-5851
Thermostats

Thermostat Installation & Replacement in San Diego, CA

(619) 273-5851

Reliable Thermostat Services for an Efficient and Cozy Home

If there’s one thing we San Diegans know, it’s how quickly our weather can flip the script. One day it’s warm and breezy, the next we’re digging out sweaters in the morning and kicking on the A/C by noon. That’s why having the right thermostat isn’t just a nice-to-have—it’s a game-changer.

At Mauzy, we’ve been keeping San Diego homes comfortable for over 50 years, and we’ve learned that temperature control starts with the right thermostat—and the right team to install it.

(619) 273-5851
man controlling temperature on a nest thermostat

Why the Right Thermostat Really Matters

A thermostat may be a small box on your wall, but it’s the brain behind your whole HVAC system. It decides when your heating or cooling turns on, how long it runs, and whether you’re wasting money or staying efficient.

Whether you’re swapping out an outdated unit or getting a smart thermostat dialed in, we make sure your system works smarter—not harder. It’s not just about temperature. It’s about control, energy savings, and making your home feel just right every single day.

Our Thermostat Installation Services: What to Expect

When you call Mauzy, you’re not just getting a thermostat installer—you’re getting a team who treats your home like it’s our own. Here’s how we make the whole process seamless:

1. Let’s Talk First

We always start with a conversation. What’s going on in your home? Are you tired of fiddling with buttons? Want to control everything from your phone? Or maybe you’re curious about zoned heating and cooling? We’ll walk through your needs and make tailored recommendations.

2. Choosing the Right Thermostat

We don’t believe in one-size-fits-all. From basic digital thermostats to sleek, app-controlled smart ones, we’ll help you pick the model that makes sense for your home, your lifestyle, and your budget.

3. Professional Installation

Our certified techs take care of everything—wiring, setup, and configuration. We’ll even make sure your new thermostat is synced perfectly with your HVAC system.

4. A Quick Walkthrough

Before we leave, we’ll show you how it all works. Whether that means helping you set schedules, showing you how to use the app, or just explaining what those buttons do, we’re here to help.

5. Long-Term Support

Got questions later? Need a hand troubleshooting something? You can count on us. We’re a family business, and our relationship with you doesn’t stop at installation day.

Thermostat Options: Which One’s Right for You?

Not sure where to start? Here’s a quick rundown of what we offer—and what might work best in your San Diego home.

Smart Thermostats

Control your home’s temperature from anywhere with your smartphone. Smart thermostats learn your habits, adjust automatically, and can save serious cash on energy bills. Plus, many models integrate with Alexa, Google Home, and other smart devices.

Best for: tech-savvy homeowners, frequent travelers, energy savers.

Programmable Thermostats

These thermostats let you set heating and cooling schedules based on your daily routine. No more turning the heat off before work or coming home to a sauna.

Best for: folks with regular schedules, energy-conscious households.

Basic Digital Thermostats

Simple, reliable, and easy to use. You get accurate temperature control without the bells and whistles.

Best for: homeowners who want a no-fuss, budget-friendly option.

Zoned Thermostats

Have rooms that are always hotter or colder than the rest? Zoned thermostats give you individual control in different parts of your house.

Best for: larger homes, multistory homes, or families with different temperature preferences.

Common Thermostat Problems (And How We Fix Them)

Living in San Diego means we put our HVAC systems to good use. And sometimes, your thermostat can start to misbehave. Here are a few red flags:

  • Wild temperature swings: Your home doesn’t match the setting? That’s a signal.
  • Thermostat won’t turn on: Could be wiring, batteries, or the unit itself.
  • Short cycling: If your system keeps turning on and off too quickly, that’s a problem.
  • Losing settings: A clear sign it’s time for a replacement—or at least a fresh set of batteries.

When you call Mauzy, we’ll troubleshoot the issue and give you an honest answer—whether that means a quick fix or a full replacement.

Thermostats FAQ

  • Should I DIY My Thermostat Install?

    Should I DIY My Thermostat Install?

    Honestly? If you’re swapping a basic thermostat with another basic model—and you’re comfortable working with electrical wiring—it can be a doable weekend project.

    But… if you’re installing a smart thermostat, running new wires, or integrating with a more complex HVAC system, we strongly recommend calling in the pros. Improper installation can lead to system malfunctions, higher energy bills, or even safety hazards.

    With Mauzy, you’re getting licensed professionals who’ve done this a thousand times—and we’ll make sure it’s done right the first time.

     

  • How Much Does It Cost?

    Prices vary based on the thermostat and the installation complexity, but here’s a ballpark:

    • Basic digital thermostats: $50–$100 (plus install)
    • Programmable models: $100–$200
    • Smart thermostats: $200–$400+
    • Installation: Usually between $100–$300

    Want a more accurate quote? Just give us a call. We’ll walk you through your options and find something that works for your budget.

  • When It’s Time for an Upgrade?

    Wondering if it’s time to swap out your old thermostat? Here are a few signs:

    • It’s more than 10 years old
    • Your energy bills are creeping up
    • You’re constantly adjusting it
    • It doesn’t respond or loses programming
    • You want features like Wi-Fi control or remote access

    Trust us—upgrading your thermostat can make a bigger difference than you think.

Why San Diego Trusts Mauzy

We’re not some national chain. We’re a local, family-owned company that’s been serving San Diego for over five decades. We’ve seen the technology evolve, and we’ve evolved with it—without ever losing sight of what matters most: our customers.

When you choose Mauzy, you’re getting more than installation. You’re getting legacy, quality, and the kind of customer care that only comes from people who live where you live.

Ready for a Smarter, More Comfortable Home?

Let’s talk thermostats. Whether you want to schedule a visit, get a quote, or just ask a few questions—we’re here for you. Call us today, and let’s make your home feel just right, every day of the year.

Call us today at (619) 273-5851 to schedule an appointment!

(619) 273-5851

Awards

Reviews

Here’s What Others Are Saying About Us

5

Jushua was the best!!so knowledgeable and friendly .. an asset to your company!!!

5

Nathan inspected my old wall heater. All is well. Technician was polite and respectful. Great rep for Mauzy.

5

knowledgeable, thorough; reassuring; no sales pressure

appreciated his efforts

5

Alex and Chris from Mauzy did a fantastic job installing my new HVAC. They were both polite and efficient working together as a team. Thank you for the positive experience. Big shout out to Edwin in making it happen. Cheers, Vince Sanchez

5

Was provided amazing and excellent customer service. Was notified of anything that needed to be cleaned or maintained.Kylin Was very professional

5

Great service.

5

Just had Evan G from Mauzy do an evaluation on the plumbing on my home. The evaluation could not have been more complete.
Every bit of the plumbing was checked. Yes everything was good to go but if there was an issue Evan with his knowledge would not have missed a thing. At least 2 hours to go through all the plumbing. I recommend every home owner to get the same service. It will save on the long run and if there are minor issues you will be made aware. Evan G was terrific.

5

Kory was great and very thorough , thank you

5

Mouzy is hands above any other plumbing/electrical A/C, firm I’ve used in the past, and since I am 80 years old, I’ve used a heck of a lot of them. They are fair, polite, and knowledgeable. I have no idea what More can think of to describe them.
You’ll be happy with them!

5

James Logsdon was our Tech. He is very professional and lets you know what he will be doing. He kept me informed of everything. He was amazing and I trust him. Best Tech ever.

5

Darren was very through in completing the service maintenance for my heating system. He took numerous photos and explained everything in detail. Thank You Darren!

5

Brandon was our technician, and was great about communicating prior to his arrival with an estimated time to be at our home. He was very pleasant, and explained what services he would be providing. During his visit, he was respectful of our property and kept us informed on progress of the work provided. He left things in order and provided a final update on his analysis of our plumbing. Very impressive service.

5

James is an excellent technician! He sourced the problem and handled the follow up in a professional manner. He clearly explained the issues with our heater. We appreciate his knowledge and courtesy!!! Our heater still under warranty for the part that had failed so no payment was due at this time.

5

Joe Annello was extremely thorough and explained his findings and answered all my questions. He was very professional and on time.

5

Both Darren and Joshua were kind?respectful, informative and gave many options to choose from!

5

Christian is knowledgeable of the job and very professional

5

Joshua was professional and courteous. His detailed description of filtration systems, along with inspection and recommendations for correction of my failed in line water filter were a sell point for the filter I subsequently purchased from Mauzy plumbing. He provided above and beyond service, tightening fixtures and replacing piping and components at no extra charge. He demonstrated how water quality reflected filter performance, which turned out to be what he predicted it would. I was more than satisfied with Joshua’s informed and thorough
service. Thank you.

5

Kory was professional, proactive, courteous, and answered all of our questions regarding heating and air conditioning maintenance.

5

Prompt and well informed. Thank you.

5

Excellent service. Was able to get same day service. The technician, Kory went above and beyond to get my heater repaired in a timely manner. He was very personable and took the time to explain the details of the problem and the repair.

5

Got great service today from Evan G. Yearly inspection on our water heater and routine check on pluming in the house. Fast reliable service and recommendations on future and preventive maintenance. Thank you Evan and Mauzy for great service.

5

Kory was very professional and answered all our questions.

5

Excellent service!

5

I should’ve called Mauzy first! Prior to the call to Mauzy I had 2 companies come out to help me with a plumbing issue I had. Let’s just say it got worse rather than better. Finally, Wilber, an exceptional young man to say the least, came to the rescue! Knowledgeable, efficient, and walked me through every step of the process. Pinpointed the problem and had my plumbing issue resolved. Thank you Mauzy for having exceptional employees that know what they are doing! Will continue my services with Mauzy.

5

Tommy and Alex were totally awesome.

5

Technician Michael Mitman was very professional and helpful. More importantly, he got the job done in an expeditious manner.

5

Mauzy was very professional and did a great job. Especially appreciated Chris and Alejandro’s work.

5

On Time, very friendly and efficient. James is very easy to deal with

5

Thanks Robert for your great service.

5

Just got my new furnace installed. My technicians Chris and Alejandro were quick with removing the old one and installing the new one. Both were very helpful to help me with my thermostats and explain every part of the process with the new furnace. Im completely satisfied with their service.

5

James was very knowledgeable. He fixed the issue 3 others couldn’t

5

Darren Murphy is a super star and a great Ambassador. Keeps the customer informed as to what’s happening. Rates T least 11 stars

5

I highly recommend Mauzy! Their technician Wilber did an amazing job! He was professional from the moment he arrived. He was respectful, knowledgeable and very thorough. He quickly identified the issue and took the time to explain my options clearly. He made sure everything was cleaned up and working perfectly before leaving which made the whole process smooth and stress-free. Definitely recommend this company and highly suggest you request Wilber!

5

Mauzy plumbing installed a tankless water heater for me in February and they did a superb job. The technician from Mauzy who installed my tankless water heater was Franky. I recently had a question about my system and Mauzy immediately sent Franky back to my home to evaluate the situation. He did a thorough analysis and determined that everything is good. I’m sure all of the Mauzy technicians are excellent, but if I ever have a complicated plumbing problem in the future, I would specifically ask for Franky; he is extremely knowledgeable and thorough and I can’t recommend him and Mauzy highly enough.

5

Mike Kesner was great! Professional, knew what to do to check the issue and was efficient in its resolution.

5

Excellent both times. Technicians were knowledgeable and polite. Respectfull of my house. Top notch service.

5

The Mauzy crew did a great job installing our new cooling and heating system. Alejandro, Chris, and Isaac worked all day to complete the work and were very professional. They deserve a free lunch for their efforts.

5

Mauzy’s technician, Christian Perez, was absolutely wonderful. He was very personable, professional, knowledgeable, patient and kind. He described the who, what, where and why in great detail and iI really appreciated all his efforts and guidance. Thank you Christian and Mauzy telephone staff. The ladies were so very helpful, kind and supportive in assisting us and making this happen on my schedule. Appreciate you!!

5

Needed an estimate to run two additional electric outlets for my garage and one in the house. The technician was great and knowledgeable.

5

Knowledgeable person but company prices were very high explained the process very well.
Enjoyed him but price was exorbitant

5

On time. Helpful. Professional

5

Mauzy did an excellent job helping me with a water leak. Our technician, Wilber, was on time, professional, and quickly identified the source of the issue. He completed the repair efficiently and made sure the area he worked in was left spotless. I really appreciated his attention to detail and top-tier service. Highly recommend Mauzy!

5

I couldn’t be happier with the service I received from Wilber! From start to finish, he was professional, on time, and knew his stuff. He quickly diagnosed the issue, explained everything clearly, and completed the repair on time. Attention to detail was great and was very respectful of my home. He made sure everything was clean and working perfectly before leaving.

5

I recently had the pleasure of working with Joe Annello from Mauzy Cooling, Heating, Plumbing, and I cannot say enough about how great the experience was. From start to finish, Joe stood out for his exceptional professionalism and friendly demeanor, making what could have been a stressful situation feel effortless and reassuring. Joe was incredibly thorough in his work, taking the time to carefully assess and diagnose the issue. It was obvious that he takes pride in his work and genuinely cares about providing the best service possible. His attention to detail was truly impressive, and he made sure everything was checked over meticulously before giving his recommendations. What really set Joe apart was his ability to explain everything he found clearly and in a way that was easy to understand. He never rushed through the details or overwhelmed me with technical jargon; instead, he patiently walked me through his findings and the steps needed to resolve the issue. It made me feel confident and informed about the situation, which I really appreciated. Joe’s combination of friendliness, thoroughness, and clear communication truly makes him a standout technician. If you’re looking for someone who is not only skilled but also goes above and beyond to ensure an excellent customer experience, I highly recommend Joe Annello. He represents Mauzy Cooling, Heating, Plumbing in the best possible way and is someone you’d want working on your home!

5

Kylin was very professional in attacking our heating and air conditioning units. In fact he won the battle. Very pleased with how he presented himself and his report. MCC

5

All I can say it was a pleasure working with Evan&Alex and today with Tommy – All I can say is I’m glad I’m part of the Mauzy Family! Tip Top service, completely knowledgeable and addressed ALL problems.

5

Corey Buck checked out our HVAC system today and was quick, thorough and efficient. He was also very courteous and amiable. We appreciate he was on time arriving just after 8 am with a 8-10 am window. Thank you.

5

A water heater breaking & unique older home piping/water pressure situation made what should have been a routine water heater replacement a bit more complex, and Ron, Ryan & Kacey were great in helping us get this quoted and serviced in the same day. I appreciate how communicative Ron was and how flexible Ryan was with our crazy schedules!

5

Chris Sotelo, Alejandro, Eddie and Westin were amazing today. They came to install a new A/C Heater unit and did a great work. They were knowledgeable, careful handling the equipment and did everything in a timely way. Thank you to this crew team!

5

Evan and Alex were a pleasure to work with! Very professional and personable.

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