Furnace Repair Manchester

Frequently Asked Questions about Furnace Repair

What is a pilot light?

A pilot light is a small, continuous flame used in older furnaces. It's how older furnaces ignite the gas. Most modern furnaces use an electronic ignition system. While pilot lights are generally reliable, they can sometimes go out or malfunction, requiring relighting or repair. They also consume a small amount of gas continuously, even when the furnace is not actively heating. .

How do I relight my furnace's pilot light?

If your furnace has a pilot light and it goes out, you can try relighting it by following the manufacturer's directions on the furnace. However, if you're not comfortable working with gas or if you don't feel safe doing it, it's always best to contact a qualified HVAC technician. Never try to relight the pilot if you suspect a gas leak.

How can I tell if my furnace is the correct size for my home?

A properly sized furnace is crucial for efficient and comfortable heating. An too-small furnace will constantly run and struggle to heat your home effectively, especially in cold weather.. An too-large furnace will short cycle, causing wear and tear, inconsistent heating, and inflated utility bills. Here are some signs your furnace may be improperly sized:

• High Energy Bills: An oversized furnace can cause increased energy consumption.
• Inconsistent Temperatures: Noticeable temperature fluctuations between rooms.
• Short Cycling: If your furnace turns on and off frequently, it may not be heating your space efficiently and wasting energy.
• Poor Air Quality: If the airflow from the vents seems weak or there are areas with inconsistent temperatures, the unit may be the wrong size.
• Excessive Noise: A furnace that's too large can make loud or unusual sounds

A qualified technician will be able to assess your home's heating needs. A Manual J load calculation can accurately determine the appropriate furnace size.. A proper sizing calculation is a worthwhile investment for optimal comfort and energy efficiency.

What are the most common furnace problems?

Common furnace problems range from minor issues to major system failures, such as:

• No Heat or Reduced Heat Output: This can be caused by a faulty thermostat, a clogged air filter, or a malfunctioning igniter.
• Strange Noises: Unusual sounds like banging, squealing, or rumbling can indicate problems with the blower motor, igniter, or other components.
• Short Cycling: This is when the furnace turns on and off too frequently, which can be caused by a faulty thermostat, an overheating furnace, or a clogged air filter.
• Pilot Light/Ignition Problems: Make sure your pilot light is on, or your ignition system is functioning correctly.
• Blower Motor Issues: If the blower motor isn't functioning, your furnace may not distribute heat properly. A malfunctioning blower motor can cause reduced airflow, uneven temperatures, and loud noises. should be addressed by a technician.
• Dirty Air Filter: A clogged air filter reduces airflow and decreases furnace efficiency. . It can also cause overheating and damage..
• Cracked Heat Exchanger: This is a serious safety hazard, as it can lead to carbon monoxide leaks. A cracked heat exchanger needs to be repaired or replaced immediately.

Don't attempt DIY repairs if you're not qualified.