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London, Ontario
  • Aylmer
  • Forest
  • Ingersoll
  • London
  • Port Stanley
  • Sarnia
  • St Marys
  • St. Thomas
  • Strathroy
  • Tillsonburg
  • Woodstock
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Roy Inch & Sons Service Experts Heating & Air Conditioning Logo
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226-270-1164
226-270-1164
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Frequently Asked Questions

Why is my AC system freezing up?

There are several items that can trigger your HVAC system to freeze up; many of them usually need to be corrected by a professional technician. Determining the air filter is clean or replaced and making sure the airflow is not restricted are about the only things a homeowner should safely check or handle themself.

Low refrigerant: In some cases, freezing up is caused by a leak in the refrigerant lines. Weak solder joints, friction from piping rubbing or vibrating against an object, leaking valves or loose fittings can cause leaks. How long your system has been operating and the type and location of the leak govern the decision whether to have the system repaired or replaced.

Dirty evaporator coil: In time, the evaporator coil will become dirty. When this happens, the results are similar to those of having a dirty filter. Gradually you will lose airflow, slowly enough that you probably would not realize it until it freezes up or is not cooling adequately. You will need to contact your local Service Experts sales and service center to remedy the problem.

Defective blower motor or relay: A blower motor running at an improper speed or not running at all can cause freezing. It can also be discontinuous, starting at full speed and slowing down after it heats up. Or a relay could cause it to start one time and not the next. In either case, you will need to contact your local Service Experts sales and service center to correct the problem.

Should you learn that your system was freezing due to a dirty air filter, after replacing or cleaning the filter, you can expedite the thawing process by turning the system off and then turning on only the fan. If you have a heat pump system, you can try turning the system to heating mode until the ice has melted. After the ice has melted, change the system settings back to normal. If the system refreezes, contact Roy Inch & Sons Service Experts Heating & Air Conditioning in London to correct the problem.

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Serving These Communities and More
  • Aylmer
  • Forest
  • Ingersoll
  • London
  • Port Stanley
  • Sarnia
  • St Marys
  • St. Thomas
  • Strathroy
  • Tillsonburg
  • Woodstock
Roy Inch & Sons Service Experts Heating & Air Conditioning
3500 White Oak Road, Unit B-1London, Ontario N6E 2Z9
Sales and Service: 226-270-1164
Employment Inquiries: 519-681-2450
Email: royinch@serviceexperts.com
About Roy Inch & Sons Service Experts Heating & Air Conditioning
Service Experts Heating and Air Conditioning was founded with the understanding of delivering customers with the most excellent heating and cooling practices in the industry. Since its foundation, Roy Inch & Sons Service Experts in London has been dedicated to community, providing the top of the line HVAC (Heating, Ventilation, Air Conditioning) products and services in the area. If you want more details about your regional HVAC leaders, call us at 226-270-1164 or schedule an appointment with us online.
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