Thermostat Repair · Troubleshooting
Thermostat Repair & Troubleshooting in Metro Vancouver
Blank screen, no heat, no cooling, dropped Wi-Fi or short-cycling - we diagnose whether it is the thermostat, the wiring, or the system behind it.
By the CANRO Heating & Cooling technical team · Licensed HVAC & gas-fitting contractor, Metro Vancouver · Last updated May 2026
⚡ Quick answer
CANRO troubleshoots and repairs thermostat faults across Metro Vancouver - blank or frozen screens, a thermostat that will not call for heat or cooling, dropped Wi-Fi, wrong temperature readings and short-cycling. We find the real cause - thermostat, wiring or equipment - and fix it. Call (604) 359-1081.
TSBC-Licensed Gas FittersRed Seal HVACWorkSafeBC InsuredPermitted & Inspected InstallsServing Metro Vancouver Since 1999We File Your Rebates
Common thermostat problems we fix
- Blank or dead screen - usually a power problem (a missing or loose C-wire, dead batteries, or a tripped furnace safety) rather than a dead thermostat
- The heat or AC will not turn on - a wiring fault, a configuration error, or a problem with the equipment the thermostat is calling
- Short-cycling - the system turns on and off every few minutes, often from poor thermostat placement, a wiring issue, or wrong setup
- Wrong temperature reading - the thermostat is in direct sun, near a draft or heat source, or needs calibration or replacement
- Wi-Fi keeps dropping - a power-delivery problem (again, often the C-wire) or a network issue
- Unresponsive buttons or touchscreen - a failing unit that should be replaced
The honest truth is that many "broken thermostat" calls turn out to be a wiring or power issue, or a fault in the furnace or heat pump itself. We diagnose the whole chain - thermostat, wiring and equipment - so you get the actual fix, not a guess.
How we diagnose a thermostat fault
- We confirm the thermostat is getting proper power, and check for a C-wire or power-kit issue
- We test the wiring continuity back to the furnace or air-handler board
- We check the equipment the thermostat controls - a blank screen can be a tripped furnace lockout, not a thermostat fault
- We verify the thermostat is configured for the correct system and staging
- We test a full heating and cooling cycle to confirm the repair holds
Because we are licensed HVAC technicians, not just thermostat swappers, we can follow the problem into the equipment when that is where it actually lives.
Repair or replace? Our honest take
If your thermostat is a recent smart or programmable model and the fault is in the wiring or power, repairing it is usually the right call. If it is an old, failing, or unsupported unit - or the touchscreen has died - replacement is often the better value. We give you the honest math rather than defaulting to the more expensive option.
No heat at all on a cold day?
If your system is completely down, the thermostat is only one possible cause. Call us at (604) 359-1081 - we will help you check the simple things over the phone and get a technician out to diagnose the whole system quickly.
Why Metro Vancouver homeowners choose CANRO
A thermostat is a small device that controls a large, expensive system - so the wiring, configuration and system staging behind it matter far more than the box on the wall. CANRO has installed and serviced heating and cooling across Metro Vancouver since 1999.
- Licensed, insured, TSBC gas-ticketed technicians - the same crew that installs and services your furnace, boiler and heat pump
- We get the wiring and heat-pump / dual-fuel staging right, so the thermostat controls every stage of your system correctly
- Honest advice on which thermostat actually fits your home and habits - no upsell to a feature you will never use
- A real 4.9-star reputation across 85+ Google reviews from local homeowners
- We can pair the thermostat upgrade with maintenance, a repair, or a full system replacement in one visit
Related pages
Frequently asked questions
Why is my thermostat screen blank?+
Most often it is a power problem - dead batteries on a battery-powered unit, or on a hardwired smart thermostat a missing or loose C-wire that has lost its power supply. It can also be a tripped furnace safety switch cutting power. We find which it is and fix it properly.
My thermostat is on but the heat won't come on - what's wrong?+
It could be a wiring fault, a configuration error, or a problem in the furnace or heat pump itself - for example a safety lockout. We test the full chain from the thermostat to the equipment to find the real cause rather than just swapping the thermostat and hoping.
Can a bad thermostat cause short-cycling?+
Yes. Poor placement (in sun or near a vent), a wiring issue, or incorrect setup can make a thermostat turn the system on and off too frequently, which wastes energy and wears out equipment. We diagnose and correct the cause.
Do you repair smart thermostats like Nest and ecobee?+
Yes - and very often the fix is in the power supply or wiring rather than the thermostat itself. We resolve C-wire and power issues, reconfigure the unit for your system, and only recommend replacement when the device has genuinely failed.
Thermostat acting up?
Get a licensed technician to diagnose the real cause - thermostat, wiring, or system - and fix it right. Fast, honest service across Metro Vancouver.
4.9★85+ Google reviews
27+Years serving Metro Vancouver
20+Brands serviced
$0Free written estimates on installs
Frequently asked questions
What HVAC services does CANRO offer in Metro Vancouver?
CANRO installs, services and repairs boilers, furnaces, heat pumps, hot water tanks, tankless water heaters, gas fireplaces and air conditioning across Metro Vancouver. We work on residential homes, townhouses and condos throughout the Lower Mainland.
How long has CANRO been in business?
CANRO has been serving the Greater Vancouver area since 1999. Our founder George is recognised by customers as one of the most experienced boiler and hydronic heating technicians in the Lower Mainland.
What areas do you serve?
We cover all of Metro Vancouver: Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Delta, Langley, Port Moody, Port Coquitlam, White Rock, Pitt Meadows, and Maple Ridge.
Are CANRO technicians licensed and insured?
Yes. CANRO holds Technical Safety BC contractor licences for gas (LGA0043870) and boilers (LBP0046450), our technicians are Red Seal certified for HVAC and gas, and we carry full liability insurance and WorkSafeBC coverage.
How can I book a service call?
Call (604) 359-1081, email info@canroheat.ca, or use the booking form on canroheat.ca. Most calls are answered the same business day and we offer next-day appointments for non-emergency work.
Do you offer free estimates?
Yes. Free in-home estimates are provided for boiler, furnace, heat pump and water-heater replacements. Diagnostic visits for repairs carry a flat service fee that is credited toward the repair if you proceed.
What brands do you service?
We service all major brands including Viessmann, Navien, IBC, Rinnai, Rheem, Bradford White, Weil-McLain, Laars, Baxi, NTI, Lennox, Carrier, Bryant, Goodman, Trane, York, Daikin, Mitsubishi Electric, AO Smith, Bosch, Noritz, Giant, GSW, John Wood, and Valor.
Do you offer government rebates for heat pumps?
Yes. We are a registered contractor for BC Hydro, FortisBC and federal Greener Homes rebates. A high-efficiency heat pump installation can qualify for significant combined rebates depending on your home, equipment and income, and we handle the paperwork for you.
How quickly can you replace a broken hot water tank?
Standard 40 or 50-gallon gas or electric tanks are typically replaced same-day or next-day from stock. Tankless water heaters and larger-capacity units usually take 1–3 business days depending on parts availability.
Why should I choose CANRO over other HVAC companies?
CANRO has been operating in Metro Vancouver since 1999 with a 4.9-star rating from 85+ Google reviews. We specialise in difficult boiler systems (Viessmann, IBC, Baxi, Laars) that many companies do not service, we give honest options instead of upselling, and our work is performed by long-term staff — not subcontractors.
What Metro Vancouver homeowners say about CANRO
Verified Google reviews — 4.9 average across 85+ ratings
★★★★★
"Joe and Allan is a great team of plumbers. They gave me the right advice and helped me make a good decision with my heating."
Google review · May 2026
★★★★★
"The technical team is extremely efficient and skilled. They installed the water tank in two hours and the RUUD tank is working perfectly well."
Google review · May 2026
★★★★★
"We are so happy with the service provided by Joe and Alan. Alan was recommended to us to replace our hot water tank."
Google review · Feb 2026
★★★★★
"Highly recommend."
Google review · Jan 2026
★★★★★
"Canro boiler services were genuine life savers. I was stuck without heat overnight and they came by and got my boiler running."
Google review · Jan 2026
★★★★★
"Canro came in and fixed my boiler that was throwing all types of codes that I couldn't understand but the technician explained everything."
Google review · Jan 2026