“After fixing our boiler's pressure problem, he called back the following week to confirm everything still held. That kind of follow-up is rare and genuinely appreciated.”
VG
Vaughn G.King City, ON
Services
Thermostat Repair and Replacement, Done Right the First Time
Newmarket Heating & Cooling: Modern thermostats do more than hold a setpoint. They learn schedules, track energy use, and coordinate two-stage furnaces and cold-climate heat pumps. We repair failing units and install smart or programmable replacements, wired and configured to your exact system.
Why Homeowners Call Us
Rooms turning into saunas while the bedroom stays freezing?
Connection drops leave a smart thermostat running blind on its last schedule. We sort out network conflicts, update firmware, and get remote control working again.
Diagnosis Before We Touch Anything
Thermostat symptoms often point elsewhere, so we test the transformer, wiring, and control board first. That discipline prevents needless replacements and confirms the real fault before any part is ordered or installed.
Placement and Sensors Tuned for Accuracy
A thermostat in direct sun, near a cold window, or beside a supply vent reads fiction, not temperature. We relocate or compensate so the whole system responds to real conditions.
Rooted in Ontario Heating Seasons
We have tracked Ontario winters long enough to know a thermostat fault never waits for a convenient week. Our response times, stocking choices, and advice are all built around real cold-season pressure.
FAQ
Thermostat Repair & Replacement in Newmarket: Common Questions
How much does thermostat repair or replacement cost?
It depends on the fault and the thermostat type. A simple sensor fix runs far below a smart model with installation, and our estimates are always free.
How quickly can a thermostat be repaired or replaced?
Diagnose, fix, test, done: the rhythm of a typical thermostat repair is measured in hours, not days. We confirm heating and cooling cycles before we leave.
Should I repair my thermostat or replace it with a new one?
Our rule: never replace what a proper repair can carry, never repair what keeps failing. We test first, then give you the honest verdict in plain language.
Reviews
What Newmarket Homeowners Say
Real feedback from neighbours we've helped stay comfortable year-round.
“The blower just hummed and would not spin. A capacitor was the culprit, the tech had one on the truck, and total airflow was restored before dinner.”
FD
Freya D.King City, ON
“Our condenser fan kept cutting out on hot afternoons and the house warmed by dinner. The tech diagnosed an overheating motor, sourced the part, and returned promptly to install it.”
KA
Kenneth A.King City, ON
More Services
Explore Our Other HVAC Services
We Can Help Solve Your Thermostat Repair & Replacement Needs
Don't let a comfort problem disrupt your home. Get fast, reliable service from Newmarket's trusted local HVAC team.