GWB Heating Cooling Logo lesleyj.sg-host.com

SERVICING AREA
St. Thomas and
Surrounding Area

$ FINANCING

HVAC FINANCING NOW AVAILABLE

On all Ruud Air Conditioners & Furnaces

No Payments or Interest Until 2027!*

LEARN MORE

EMERGENCY
Heating Repairs & Maintenance

Experiencing a problem with your home heating system? G.W.B’s licensed technicians can service and repair a wide range of heating systems, providing fast and reliable service to homeowners and businesses in St. Thomas, London, and surrounding areas.

CALL US
(519) 857-7139

Comprehensive Heating Repair Services

From sudden breakdowns to minor inefficiencies, our repair services cover all types of heating systems. The G.W.B team will quickly diagnose any problem and fix it –  providing effective solutions to restore your home’s comfort.
  • Emergency Repairs – We're on-call to handle urgent heating problems.
  • Fast Diagnostics – We identify issues quickly to minimize downtime.
  • Transparent Pricing – No hidden fees, just honest service.
G.W.B Heating & Cooling is equipped to handle urgent heating problems for a wide range of equipment, including: Furnaces, Heat Pumps, Boilers, Tankless Water Heaters, Ductless Systems, Package Systems, Indoor Air Quality Systems, Humidifiers, Radiant Tube Heaters & Unit Heaters, Dehumidifiers, Humidifiers, Gas Fireplaces & Fireplace Inserts, Air Conditioners, and more.

GIVE US A CALL

If you’re experiencing an unexpected breakdown, we’ll get your heating system back up and running in no time. We offer emergency HVAC repairs! Our experienced technicians will quickly diagnose and repair the issue. Whether it’s a furnace that won’t heat, a boiler leaking, or a heat pump not functioning, we’re here to provide fast and reliable solutions for every heating need.
CALL US
(519) 857-7139

FURNACE REPAIRS

A malfunctioning furnace can quickly turn a cozy home into an uncomfortable space, especially during Ontario’s cold winters. Whether your furnace has stopped working altogether or is showing signs of trouble, we’re here to help with prompt, reliable repairs for all makes and models.

Common Heat Pump Issues We Fix:
  • Furnace won’t turn on or keeps shutting off, unexpectedly
  • Burners won’t ignite or pilot light won’t stay lit
  • Strange noises like banging, rattling, or squealing
  • Blowing cold air, uneven heating or weak airflow from vents
  • Thermostat not responding or misreading temperatures
Contact Us for Emergency Furnace Repairs & Maintenance

HEAT PUMP REPAIRS

Heat pumps are vital for year-round comfort. We specialize in emergency heat pump repairs, including fixing refrigerant levels, clearing frozen coils, and addressing compressor or fan issues.

Common Heat Pump Issues We Fix:
  • Heat pump stuck in cooling mode or not heating
  • Frozen outdoor unit or ice buildup
  • Refrigerant leaks causing reduced efficiency
  • Loud or unusual noises, such as grinding or hissing
  • Heat pump failing to start or stay on
Contact Us for Emergency Heat Pump Repairs & Maintenance

BOILER REPAIRS

If you need your boiler serviced, repaired or replaced, our team will get the job done. We’ll quickly fix leaks, ignition problems, pressure imbalances, and more to restore your boiler’s efficiency.

Common Boiler  Issues We Fix:
  • No hot water or insufficient heating in radiators
  • Water leaks or puddles around the boiler
  • Boiler making unusual gurgling, banging, or whistling noises
  • Pressure issues (either too high or too low)
  • Pilot light or electronic ignition problems
Contact Us for Emergency Boiler Repairs & Maintenance

TANKLESS WATER HEATER REPAIRS

A reliable tankless water heater is essential. GWB Heating & Cooling specializes in tankless water heater repairs, restoring their performance quickly and efficiently.

Common Boiler  Issues We Fix:
  • No hot water or inconsistent water temperatures
  • Error codes or warning lights on the display panel
  • Low water pressure or restricted flow
  • Ignition failures preventing the burner from heating
  • Excessive noise from the unit, such as clicking or rumbling
  • Mineral buildup affecting efficiency or flow
Contact Us for Emergency Boiler Repairs & Maintenance
Contact Us for Emergency Heating Repairs
Don’t let a broken heating system disrupt your comfort. Call G.W.B Heating & Cooling today for fast, reliable repairs in St. Thomas, London, and surrounding areas, or fill out the Contact form below!

GIVE US A CALL

(519) 857-7139

Contact Us

Fields marked with an * are required