Thermostat Installation & Upgrades in Sacramento & Nearby Areas

Upgrading your thermostat is one of the easiest ways to improve comfort, increase efficiency, and gain more control over your heating and cooling system.

Cronus Service provides professional thermostat installation, replacement, and smart thermostat upgrades — with same-day installation in most cases.

We install and recommend leading thermostat brands, including Amazon Smart Thermostat, ecobee, Google Nest, and Honeywell.

What We Offer and Deliver

What’s Included — Everything Your Thermostat Needs for Proper Operation

(01)

Professional installation of smart, programmable, or advanced thermostats

(02)

Wiring inspection and compatibility check with existing HVAC equipment

(03)

Wi-Fi setup, app configuration, and smart home integration

(04)

Calibration of temperature sensors and system communication

(05)

Removal and safe disposal of old thermostat

(06)

Final testing in both heating and cooling modes

Top Thermostat Brands

Recommended Thermostat Brands

Below are the most common and reliable thermostat brands used in Sacramento homes. Each brand works well with furnaces, heat pumps, mini splits, zoning systems, and high-efficiency HVAC equipment.

1. Amazon Smart Thermostat

Pros:
Most affordable smart thermostat option
• Clean, simple interface
• Excellent Alexa integration
• Works well for standard heating/cooling systems
• Ideal for rental homes or starter smart systems
Cons:
− Limited advanced features
− No room sensors
− Requires Alexa account for full functionality

2. ecobee (Smart Thermostat Enhanced / Premium)

Pros:
Industry-leading room sensors for accurate temperature control
Best thermostat for complex HVAC systems (heat pumps, multi-stage, zoning)
Works with Apple HomeKit, Alexa, Google, SmartThings
Excellent scheduling, automation, and energy-tracking features
Cons:
− Requires stable Wi-Fi
− Slight learning curve for new users

3. Google Nest Learning Thermostat

Pros:
Sleek design, modern interface
Learns your habits and adjusts automatically
Easy mobile app setup
Great for Google Home-based smart homes
Cons:
− Not ideal for complicated zoning
− Some systems require C-wire adapter

4. Honeywell Home / Resideo

Pros:
Extremely reliable and durable hardware
Excellent compatibility with older HVAC systems
Many model options: programmable, digital, and smart
Perfect for rental properties or simple retrofit upgrades
Cons:
− Smart features are basic compared to ecobee/Nest
− Interface varies depending on model

5. ProStat Basic Thermostat

(For customers who want simple, dependable, no-app thermostats)
Pros:
Very affordable and extremely reliable
Simple to use — no Wi-Fi, no apps, no learning algorithms
Excellent for rental properties, ADUs, or customers who prefer basic controls
Works with nearly all standard HVAC systems
Cons:
− No smart features or remote access
− No advanced scheduling
− Not ideal for zoning or multi-stage systems

6. Daikin / Lennox Communicating Thermostats

(For communicating HVAC systems: high-end, modulating, or variable-speed equipment)
Pros:
Required for Daikin FIT, Daikin VRV/VRF, Lennox SLP99V, Lennox SL28XCV, and other communicating systems
Provides full control of modulation, staging, and system logic
Maximizes efficiency and comfort on variable-speed equipment
Advanced diagnostics — helps identify problems early
Ensures compatibility with communicating furnaces and heat pumps
Cons:
− Not interchangeable with generic thermostats
− More expensive than standard models
− Must be installed and configured professionally
− Not compatible with all traditional furnaces/AC units

Consultation

Get a Free Quote and Consultation

Send us a quick request — we’ll get back to you within 15 minutes.

You’ll receive a detailed cost estimate

We’ll help you choose the right equipment

We’ll answer all your questions

Get consultation

(!) No pressure. No hidden conditions. Just clear, professional service.

Stages

How We Install & Upgrade Your Thermostat —
Step by Step

Browse by category and find the service you need:

Stage 1

System Compatibility Check

We evaluate your furnace, heat pump, mini split, or zoning system to ensure proper thermostat compatibility.

Book request
01
Cronus Service - Stages

Stage 2

Safe Removal of Old Thermostat

We disconnect and remove your old thermostat, securing all wiring.

02
Cronus Service - Stages

Stage 3

Installation & Wiring of New Thermostat

We mount the new thermostat, connect control wiring, and verify HVAC communication.

03
Cronus Service - Stages

Stage 4

Wi-Fi Setup & Smart Home Configuration

We set up mobile app access, scheduling, voice control, and automation features.

04
Cronus Service - Stages

Stage 5

Final Testing & Homeowner Walkthrough

We test heating, cooling, and fan modes, then show you how to use your thermostat features.

05
Cronus Service - Stages

Tip

When Thermostat Installation or Upgrade Is the Smart Choice

If you’re facing one or more of the following issues, installing or upgrading your thermostat may be the most cost-effective solution.

(01)

Inconsistent temperatures or uneven comfort

A modern thermostat improves accuracy and zone control.

(02)

Old or non-programmable thermostat

Upgrading adds efficiency and smart features.

(03)

System short cycling or poor temperature control

Faulty sensors or wiring cause rapid cycling.

(04)

Rising energy bills

Smart thermostats reduce wasted heating and cooling.

Cronus Service - pro tip

Pro Tip:

Many HVAC symptoms — short cycling, incorrect temperatures, and slow response — come from the thermostat, not the furnace or AC.

Upgrading to a modern thermostat protects your HVAC system, reduces wear, and improves comfort. A smart thermostat also identifies problems early through runtime monitoring and alerts.

Thermostat Service Description

Thermostat Installation & Upgrades in Sacramento — What Homeowners Should Know

Sacramento’s climate varies throughout the year, making thermostat accuracy essential. Smart thermostats automatically adjust temperature based on schedules, weather, and occupancy patterns. They also integrate with smartphones, home assistants, and zoning systems to improve comfort and reduce energy waste.

A modern thermostat helps:
• Improve indoor comfort
• Reduce heating & cooling costs
• Extend equipment lifespan
• Provide alerts & diagnostics
• Support multi-zone heating/cooling

How to Tell You Need a New Thermostat

• HVAC system turns on/off repeatedly
• Thermostat shows incorrect temperatures
• Slow heating/cooling response
• Blank screens or unresponsive buttons
• Your home still uses an old analog or basic digital thermostat
• Temperature differences across rooms

These problems often signal sensor failure or wiring issues.

Common Thermostat Problems We Fix Daily

• No power or blank display
• Wi-Fi connectivity issues
• Thermostat not communicating with furnace or heat pump
• Incorrect or missing C-wire
• Inaccurate temperature readings
• Short cycling or rapid cycling
• Broken buttons or touchscreen failures
• Smart thermostat compatibility issues

Why Thermostat Upgrades Work Well in Sacramento

Smart thermostats automatically adjust to Sacramento’s warm afternoons and cool evenings. They reduce gas and electricity usage while maintaining stable comfort. Upgrading is especially beneficial if you use:
• Heat pumps
• Multi-stage HVAC systems
• Zoned heating/cooling
• Ductless mini splits
• VRF/VRV systems

Repair Vs. Upgrade — What’s Right for You?

Choose repair when:
• A wire is loose
• Sensor replacement resolves the issue
• The thermostat is fairly new

Choose upgrade when:
• Thermostat is outdated or inaccurate
• You want remote access and scheduling
• HVAC system has been modernized
• Buttons/display no longer work
• You want to reduce energy usage

How Cronus Service Ensures a Proper Installation

We ensure correct wiring, voltage, and control pairing with your HVAC system. We also calibrate sensors and optimize thermostat settings. Most installations are completed the same day in most cases.

We ensure compatibility with furnaces, heat pumps, multi-stage systems, VRF/VRV, ductless systems, and zoning configurations.

Achieve Smarter Comfort With a Thermostat Upgrade

Whether you want full smart automation or improved temperature accuracy, Cronus Service installs thermostats that improve comfort, efficiency, and HVAC performance.

Serving Sacramento, Roseville, Rocklin, Lincoln, Granite Bay, Folsom, El Dorado Hills, Elk Grove, and nearby areas.

Consultation

Get a Free Quote and Consultation

Send us a quick request — we’ll get back to you within 15 minutes.

You’ll receive a detailed cost estimate

We’ll help you choose the right equipment

We’ll answer all your questions

Get consultation

(!) No pressure. No hidden conditions. Just clear, professional service.

Top rated

Certified and recognized as a leader in quality and reliability.​

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Reviews

Reviews from satisfied customers

Cronus Service -reviews star
(107 reviews)
Cronus Service -reviews star
(206 reviews)
Cronus Service - Testimonials

Into The D.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Jason T.

Highly recommend Cronus Service! AC unit was not working and was able to get a serviceman from Cronus Service for a same day FREE diagnostic. Other repair companies charged upwards of $200 just for the service.
Upon arrival (communication was very clear and crisp), Alex took a look at our system and diagnosed the issue right away. He took time to explain everything that was happening and what his recommended fixes were. The quoted cost was very fair and he had the parts ready in his truck to fix right away. Even included a free tune up!

Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

Denys added extended ductwork to a room that didn't have central unit hooked up! But now it's up and running!! Awesome job for only one man to do the project!!! Hopefully will last awhile! No more TOO HOT or TOO COLD in the room! JUST RIGHT!!!DENYS IS DA MAN!!!Thanks Denys!!!

Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials
Cronus Service - Testimonials

Raymond S.

I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.


Cronus Service - Testimonials

FAQ

Frequently Asked Questions

Which thermostat brand is best for my home?

It depends on your HVAC system and preference. Amazon is great for budget-friendly smart control, ecobee is the best for zoning and heat pumps, Nest is excellent for Google Home users, and Honeywell is a reliable traditional choice. We evaluate your system and recommend the best option based on compatibility, features, and performance.

Can you install thermostats the same day?

Yes — in most cases. Standard installations take 30–60 minutes. More complex systems may require additional wiring, especially if a C-wire is needed, but we stock adapters and wiring tools to complete most jobs on the spot.

Do smart thermostats work with all HVAC systems?

Not all. Heat pumps, multi-stage HVAC systems, and zoning setups require compatible thermostats with specific wiring configurations. We check your equipment before installation to ensure the thermostat communicates properly and prevents system damage.

Why is my thermostat not holding the correct temperature?

This may be caused by a sensor failure, incorrect placement (near windows or vents), internal dust buildup, or outdated calibration. Smart thermostats often solve these issues with better sensors and learning algorithms.

Can thermostat issues cause HVAC malfunctions?

Yes. Short cycling, poor temperature control, and unnecessary strain often come from faulty thermostats. Replacing an outdated thermostat can restore normal system operation and reduce energy waste.

Is upgrading my thermostat worth the investment?

Absolutely. Smart thermostats reduce energy consumption, improve comfort, extend HVAC lifespan, and provide alerts for problems. They pay for themselves through energy savings and convenience.

Contact US

Still Have Questions?

Licensed, insured, and fully certified

We work with equipment from all major brands

In-house team — no subcontractors, no middlemen

Transparent estimates and fixed pricing before work begins

Keeping the best prices in the area, apply rebates

Ongoing service, repairs, and support after installation

Consultation

Get a Free Quote and Consultation

Send us a quick request — we’ll get back to you within 15 minutes.

You’ll receive a detailed cost estimate

We’ll help you choose the right equipment

We’ll answer all your questions

Get consultation

(!) No pressure. No hidden conditions. Just clear, professional service.

Service area

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