Posted by & filed under HVAC Tips.

A recalcitrant furnace can be a homeowner nightmare. In addition to causing temperature problems, the prospect of its maintenance – and worse yet, its replacement – can be financially stressful. Thankfully, though, most furnace maintenance isn’t expensive, nor do most furnaces require replacement when routine problems occur, such as the six below:

No Heat Production

If your furnace produces no heat, at least three things could be causing the problem:

  • Closed gas value
  • Extinguished pilot light
  • Faulty thermostat

You can open the gas valve or relight the pilot light by consulting your furnace’s owner’s manual. If performing these measures doesn’t help, have an HVAC service company inspect the thermostat.

Insufficient Heat Production

If your furnace produces insufficient heat, at least three things could be causing the problem:

  • Dirty air filter
  • Dirty gas burners
  • Improperly adjusted gas burners

You can replace a dirty air filter by consulting your furnace owner’s manual. If this measure doesn’t help, have an HVAC service inspect the gas burners.

Furnace Kicks On and Off Frequently

If your furnace kicks on, and then quickly kicks off again, at least three things could be causing the problem:

  • Dirty air filter
  • Malfunctioning blower motor
  • Faulty thermostat

You can replace a dirty air filter by consulting your furnace owner’s manual. If this measure doesn’t help, have an HVAC service inspect the blower motor and thermostat.

Blower Runs Continuously

If your furnace’s blower runs continuously, at least two things could be causing the problem:

  • Faulty thermostat
  • Faulty fan limit control switch

An HVAC service should address either problem. Letting the problem persist will result in high electric bills and an overworked fan motor that experiences premature breakdown.

Pilot Light Won’t Stay Lit

If your furnace’s pilot light won’t stay lit, at least three things could be causing the problem:

  • Dirty pilot light orifice
  • Dirty gas tube
  • Faulty thermocouple

If the gas valve is open and the pilot light won’t ignite, have an HVAC service inspect the gas tube and thermocouple.

Strange Noises are heard

Depending on their age and construction, furnaces can make various strange noises. But two noises that could signify something is wrong are:

  • High-pitched squealing
  • Low-pitched rumbling

A high-pitched squealing noise can result from a loose fan belt that slips on a turn wheel. A low-pitched rumbling noise can result from an improperly adjusted pilot light or dirty gas burners. An HVAC service should inspect either noise.

Call Bardi before Winter Arrives

Winter is fast approaching, and the time to have your gas furnace inspected is now. If you wait, you could end up without heat when you need it the most, or let problems persist that lead to expensive repairs.

Bardi Heating and Air Conditioning provides the highest quality HVAC replacement, repair, and maintenance services. Whether your furnace is expired, broken, or simply needs a tune-up, we have the answer. Call today and schedule an appointment with one of our NATE certified technicians.