Four Heating Repairs HVAC Technicians Typically Undertake

Although an HVAC repair can involve anything from dealing with refrigerant losses to poorly operating ventilation fans, repair technicians also often get involved with handling faulty heating systems, too. After all, HVAC systems are installed to heat properties just as much as to aerate them and keep them cool.

It is worth having heating contractors check your central heating system toward the end of each summer to see whether your property is heated by an HVAC system or not. This way, any potential faults that are found can be sorted out long before the temperatures start to fall. What are the sorts of HVAC heating repairs that heating contractors tend to face most often following an inspection? Read on to find out.

Faulty Thermostats

To begin with, thermostat malfunctions constitute a fairly common problem that leads to heating irregularities. The thermostat operates as an HVAC system's command center, whether it is being used for air-conditioning or heating. Therefore, when one malfunctions during mild weather, you might not notice it until you put your heating on. Faults may result in no heat, intermittent heat, or exceedingly high temperatures.

Common causes of faults include faulty wiring, calibration error, and issues with the anticipator, which might cause the system to cycle too frequently. Diagnosing and rectifying thermostat problems usually involves recalibrating or repairing wiring, work that should not be too time-consuming for trained heating contractors.

Mechanical Deterioration

In common with any equipment featuring moving parts, components of an HVAC system will be subject to wear and tear over time. This can lead to airflow problems, overheating, or even complete system breakdowns. Blower motors will fail reasonably frequently if, but belts can wear out, too, or, sometimes, you may find that something as simple as the system's bearings become faulty.

These mechanical problems tend to be first noticeable due to the unusual noises they create, such as squealing, grinding, or rumbling. Call in HVAC heating contractors if you notice any such sounds when you turn your system on.

Faulty Ignition Systems

Modern heating systems generally utilize either intermittent pilots or hot surface ignition systems nowadays. Either way, faults in these areas can lead to total system inoperability. Dirt accumulation, faulty thermocouples, and malfunctioning ignition controls can cause the ignition process to fail. Fixing any of these issues might involve simply cleaning the components, but sometimes a completely new ignition system will have to be fitted.

Problematic Heat Exchangers

Lastly, issues with the furnace's heat exchanger are often the most critical types of repairs that heating contractors carry out with HVAC systems. Cracks or breaches in the heat exchanger can result in leaking carbon monoxide which is potentially lethal. Repair technicians may use specialized cameras to detect issues in the heat exchanger. Sealing up holes with spot welding is a common way to repair heat exchanger faults but, in some cases, the whole system may be condemned if it is no longer safe.

Contact local HVAC repair & heating contractors if you suspect you have any of these problems.