Thermostat Replacement and Installation in Vallejo, CA

Is your old thermostat making it impossible to keep your Vallejo, CA, home comfortable? If inconsistent temperatures and unpredictable energy costs are becoming a headache, it’s time to consider thermostat replacement.
At Environmental Heating & Air Solutions, we offer fast thermostat replacement and installation, as well as a range of other HVAC services. No matter what kind of thermostat you’re looking for, we can find a solution — from basic models to cutting-edge smart thermostats.
Our expert technicians will handle every step of the process to make sure your new thermostat works flawlessly. Don’t waste time fiddling with an old thermostat. Let our team take care of your heating and cooling issues.
Professional Thermostat Replacement in Vallejo

Is your home’s temperature inconsistent? If some rooms feel significantly warmer or cooler than others, an outdated or malfunctioning thermostat could be the culprit.
The good news is that there’s no need to manually struggle with the thermostat in this day and age. Upgrading your thermostat is a simple way to have better control over your home comfort. Modern thermostats with precise digital adjustments offer superior temperature control compared to older models.
Even better, smart thermostats have features like multi-zone control and room sensors for added convenience. These advanced solutions provide customized temperature settings for individual rooms, so everyone’s preferences can be met.
Malfunctioning thermostats can also lead to frequent HVAC cycling and unexpected temperature swings. Instead of maintaining a stable temperature, your system may constantly turn on and off.
Smart thermostats often include built-in diagnostics that can identify these issues before they turn into costly breakdowns. They may alert you to problems like a faulty temperature sensor, allowing you to address the problem proactively and avoid major repairs.
Common signs your thermostat needs to be replaced:
- Cycling on and off
- Unexplained rise in energy bills
- Inconsistent temperature control
- Strange noises
- Unresponsive
Choosing the right thermostat is much easier with professional help. The experts at Environmental Heating & Air Solutions can help you select a model that’s compatible with your current HVAC system. Not sure how to use all of the advanced features? We’ll show you how to program it to match your schedule. You can count on our experience to help you make the most of your new thermostat after installation.
Skilled Thermostat Installation
Environmental Heating & Air Solutions has been serving Northern California customers since 2010. Our team of experienced technicians provides HVAC solutions to keep your home as comfortable as possible.
From thermostat installation and replacement to water purification, we offer a wide range of options to improve the quality of your daily life. We install and service high-quality HVAC systems by trusted brands like Lennox, so you can expect your purchase to last.
When breakdowns happen, just give us a call for 24/7 emergency service. Our goal is to create the cleanest, most comfortable home environment for every customer. Trust us to handle all your heating and cooling issues.
To schedule a thermostat replacement in Vallejo, get in touch with Environmental Heating & Air Solutions today!
The Quality Difference Of EHA Solutions
Our customers are our top priority, and we work tirelessly to exceed expectations with every service we provide.
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A Commitment to Quality, Not Shortcuts
We believe great work speaks for itself. Every EHA project is completed with precision, transparency, and strict adherence to industry best practices. From equipment selection to final inspection, we focus on long-term performance, efficiency, and doing the job right the first time.
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Above & Beyond 24/7 Service
We’re here whenever you need us, delivering honest guidance, high-quality workmanship, and reliable support. Our mission is to improve every home’s indoor environment with unmatched value and care.
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Dave Lennox Award Winner
The Dave Lennox Award recognizes HVAC companies that demonstrate exceptional leadership, customer satisfaction, and technical excellence. This honor reflects our commitment to high standards, trusted craftsmanship, and delivering outstanding comfort solutions to every home we serve.
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Exceptional Lennox Products
As a Lennox Premier Dealer, we offer industry-leading systems known for efficiency, performance, and durability, backed by precise installation that maximizes their lifespan.
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Master Craftsmanship You Can Trust
Our technicians are exceptionally skilled, highly trained, and take pride in doing every job the right way, never the fast way. We work at or above manufacturer specifications and refuse to cut corners, ensuring long-lasting performance and true peace of mind.
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Privately Owned & Locally RootedWe’re a local, family-driven business, not a corporate chain. That means personal service, local accountability, and neighbors who genuinely care about the comfort of your home.
Trusted by Your Neighbors
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“These guys know what they're doing.”- Greg V.
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“From the no pressure sales (Kevin) to the professional installation team. Zack, Zavier and Chris were all awesome!”- Barbara W.
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“From our initial consult with Kevin through to installation by Matt & Eugene, we were very impressed with their collective knowledge, professionalism, and workmanship.”- Ed M.
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“I had 4 different HVAC companies quote us on a complete system replacement, one was even a little less then Environmental, but none compared to the professionalism, expertise and knowledge of this company.”- John
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“From our initial consult with Kevin through to installation by Matt & Eugene, we were very impressed with their collective knowledge, professionalism, and workmanship.”- Ed M.
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“I highly recommend them.”- Judy T.
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“The company has an excellent customer appointment tracking system.”
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“They did a wonderful job and cleaned up after themselves.”- Sonia G.
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“We have had no AC in this triple digit weather along with having a baby in our home and being sick with a cold.”- Irie R.