Thermostat Repair Service in GTA


Looking for reliable thermostat repair services in GTA? Our certified technicians provide fast, accurate repairs for all thermostat types to ensure optimal comfort and reduce HVAC inefficiency, high energy bills, and temperature fluctuations. We also provide emergency, same-day solutions for your convenience!









Smart Temperature Control
Heating & Cooling Problems? We Fix Thermostats Fast in GTA!
A malfunctioning thermostat can cause HVAC inefficiency, short cycling, or temperature fluctuations. Whether it’s a wiring issue, sensor failure, or calibration problem, our licensed technicians provide fast diagnostics and expert repairs quickly. We service smart, programmable, and manual thermostats for seamless operation and precise temperature control at any time of the year.
Perfect Climate, Always
Expert Thermostat Repairs Tailored to Your Needs
Thermostat Diagnostics and Troubleshooting
We identify wiring faults, sensor failures, and power issues using advanced tools like multimeters, manometers, and digital temperature sensors to restore proper function.
Thermostat Wiring Repair
Faulty low-voltage wiring, loose connections, or damaged relays can cause HVAC malfunctions. We repair and replace R, C, W, Y, and G wires to ensure seamless communication with your system.
Thermostat Replacement
If your thermostat is beyond repair, we install manual, programmable, and smart thermostats with proper HVAC compatibility, voltage matching, and precise sensor calibration.
Smart Thermostat Repair and Connectivity Issues
We fix Wi-Fi connectivity, app syncing, and firmware issues for smart thermostats like Nest, Ecobee, Honeywell, and Lux to ensure proper HVAC system integration and remote access.

Battery and Power Source Repairs
A thermostat that won’t power on may have low battery voltage, faulty 24V transformer, or C-wire issues. We replace power sources and correct low-voltage circuit malfunctions.
Thermostat Calibration
Inaccurate temperature readings can lead to HVAC inefficiency. We recalibrate temperature sensors, heat anticipators, and differential settings for precise climate control.
Outdated Thermostat Upgrades
Older thermostats lack energy-efficient features. We upgrade outdated models to programmable or smart thermostats, ensuring optimal HVAC performance and energy savings.
Having a HVAC problem? We’ll FIX it today!
We’re available 24/7 to restore your comfort. Call now for same-day service!
Energy-Saving Technology
Signs Your Thermostat Needs Repair & How We Can Help
Thermostat Not Turning On
Inaccurate Temperature Readings
If your thermostat doesn’t match the room’s temperature, it may have sensor calibration issues, dust buildup, or incorrect placement. We recalibrate temperature sensors for precise climate control.
HVAC System Not Responding to Thermostat
A disconnected or misconfigured thermostat can cause furnace, Air Conditioner, or heat pump malfunctions. Our technicians inspect relay switches, control boards, and communication signals to restore proper operation.
Short Cycling (Frequent On/Off Cycling)
If your HVAC system turns on and off too often, it could be due to incorrect heat anticipator settings, faulty wiring, or a failing temperature sensor. We diagnose and correct the issue for steady performance.
Smart Thermostat Connectivity Issues
Wi-Fi-enabled thermostats may lose connection due to firmware bugs, router interference, or incorrect network settings. Our experts troubleshoot and update Nest, Ecobee, and Honeywell thermostats for seamless control.
Qulaity Brands We Work With
From Carrier to Trane – The Best AC Brands We Work With












Beat the Heat with HVAC-Group
Smart, Programmable & Traditional Thermostats – We Repair Them All
Non-Programmable Thermostats
These basic models control manual temperature adjustments but can fail due to wiring issues, aging sensors, or faulty relay switches. We inspect and repair for consistent heating and cooling performance.
Programmable Thermostats
Designed to schedule temperature changes, programmable thermostats may experience battery failures, misconfigured settings, or power supply issues. Our technicians recalibrate and restore optimal operation.
Digital Thermostats
Digital models rely on precision sensors and LCD displays. We fix faulty backlit screens, inaccurate temperature readings, and unresponsive controls to ensure precise HVAC system communication.
Smart Thermostats
Wi-Fi-enabled thermostats like Nest, Ecobee, and Honeywell may have connectivity issues, software glitches, or failed integration with smart home systems. We troubleshoot and update for seamless automation.
Wireless Thermostats
These models communicate via RF signals or Bluetooth and can suffer from signal interference, battery depletion, or HVAC miscommunication. Our expert technicians restore stable connections and accurate temperature control.
Zoned HVAC Thermostats
Zoned systems regulate individual room temperatures but can malfunction due to faulty dampers, control board failures, or sensor misalignment. We ensure balanced airflow and proper zoning operation.
Heat Pump Thermostats
Specialized for dual-mode heating and cooling, heat pump thermostats may fail due to incorrect settings, wiring defects, or reversing valve issues. We diagnose and fix for optimal year-round efficiency.
Stay in Control
From Homes to Offices – We Serve All Property Types
Residential
We repair and upgrade thermostats for single-family homes, condos, and apartments to ensure seamless operation with furnaces, central AC units, heat pumps, and zoned HVAC systems. From faulty sensors to wiring issues, we restore comfort and efficiency.
Commercial
Businesses rely on precise climate control for productivity and customer comfort. We service office buildings, retail stores, warehouses, and restaurants, fixing BMS-integrated thermostats, multi-zone HVAC controls, and programmable commercial units for optimal performance.

Smart Home Comfort
Emergency Thermostat Services – We’re Here When You Need Us
A malfunctioning thermostat can disrupt heating and cooling, causing HVAC failures, short cycling, or unresponsive controls. Our 24/7 emergency service diagnoses and repairs wiring faults, sensor malfunctions, and power supply issues to ensure precise temperature regulation and system efficiency.
Professional Thermostat Services
Achieve optimal comfort and efficiency with our expert thermostat services. From thermostat installation to calibration and maintenance, our skilled technicians provide reliable solutions to keep your home perfectly heated or cooled. Contact us today to schedule your service

Thermostats Made Simple
Lower Energy Bills with Our Efficient Thermostat Services
A properly functioning thermostat optimizes HVAC efficiency and reduces energy waste and utility costs. We repair and calibrate temperature sensors, heat anticipators, and programmable settings for precise climate control. Upgrading to smart or programmable thermostats enhances performance, automates schedules, and improves overall system efficiency.
Why to Work with Us
Why Choose HVAC Group for Thermostat Repairs in GTA?

Expertise in All Thermostat Types
From manual and programmable to smart and zoned thermostats, we diagnose and repair all models. Our services ensure seamless compatibility with HVAC systems, heat pumps, and smart home setups.

Certified & Experienced Technicians
Our TSSA-certified HVAC experts bring years of experience in handling wiring faults, sensor issues, and power failures so that your thermostat functions accurately and efficiently.

Advanced Tools & Techniques
We use digital multimeters, manometers, and infrared sensors to detect voltage issues, misconfigured settings, and faulty sensors and provide precise calibration and long-term reliability.

Tailored Solutions
Every HVAC system is unique. We customize thermostat repairs and installations to match your heating and cooling setup to provide optimized efficiency and maximum energy savings.

Fast & Reliable Service
We offer same-day repairs across GTA, quickly resolving temperature inconsistencies, system miscommunication, and power supply issues to restore comfort as soon as possible.

Competitive Pricing
We provide transparent pricing with no hidden fees. Whether you need minor repairs, full replacements, or smart thermostat upgrades, we ensure cost-effective solutions without compromising quality.

100% Satisfaction Guarantee
We stand by our work with a warranty on repairs and installations to provide long-lasting performance, energy efficiency, and reliable thermostat operation.
Location We Serve
- Brampton
- Burlington
- Concord
- Etobicoke
- Milton
- Mississauga
- North York
- Oakville
- Thornhill
- Toronto
- Vaughan
- Woodbridge
- Georgetown
Frequently Asked Questions
Can a thermostat be repaired?
Yes, most thermostat issues can be repaired, including wiring faults, sensor calibration errors, power supply issues, and connectivity problems. Our technicians diagnose and fix problems quickly.
How much does it cost to repair a thermostat?
The cost depends on the issue and thermostat type. Basic repairs start around $80-$150, while complex issues like wiring replacement or smart thermostat troubleshooting may cost $150-$300.
Who to call when your thermostat is not working?
A licensed HVAC technician should inspect and repair your thermostat. We diagnose power failures, communication errors, and HVAC system misalignment to restore proper temperature control.
How do I tell if my thermostat is bad?
Signs of a failing thermostat include inaccurate temperature readings, HVAC system short cycling, unresponsive controls, and connectivity issues. If troubleshooting doesn’t fix it, professional repair is needed.
What causes a thermostat to stop working?
Common causes include dead batteries, wiring issues, sensor failures, power supply disruptions, and software glitches in smart thermostats. Our team can pinpoint the problem and restore functionality.
Do smart thermostats need special repairs?
Yes, smart thermostats require expertise in Wi-Fi connectivity, app integration, firmware updates, and HVAC system compatibility. We troubleshoot and restore performance for brands like Nest and Ecobee.
Is it better to repair or replace a thermostat?
If your thermostat is over 10 years old, frequently malfunctions, or lacks modern features, upgrading to a programmable or smart thermostat can improve energy efficiency and system performance.
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How long does a thermostat repair take?
Most repairs take 30 minutes to 2 hours, depending on the complexity of the issue. Our technicians ensure fast and efficient service with minimal disruption.
Will a faulty thermostat increase energy bills?
Yes, a malfunctioning thermostat can cause HVAC overuse, temperature fluctuations, and system inefficiency, leading to higher energy costs. Repairing it ensures optimal performance and savings.
If my thermostat can’t be repaired, can you install a new one?
If your existing unit is beyond repair, we provide professional thermostat installation as part of our service. We install both standard and smart thermostats to ensure your heating and cooling system runs efficiently and gives you full control over your indoor comfort.