Furnace Repair Wisbech

Frequently Asked Questions about Furnace Repair

Why is my furnace blowing cold air?

Possible reasons for cold air include:

• Pilot light or ignition problems: If the pilot light is out, the burners won't light, and the furnace won't produce heat. In newer furnaces, a faulty electronic ignition system can prevent the burners from igniting.
• Thermostat issues: An incorrectly set or malfunctioning thermostat can prevent the furnace from turning on or make it blow cold air. Check your thermostat settings is set correctly and is sending a signal to the furnace to turn on.
• Overheating: If the furnace overheats, it could activate a limit switch. Overheating can also damage your furnace, so it's best to have a professional inspect the system.
• Ductwork problems: Seal any ductwork leaks to improve performance. This can also result in the furnace blowing cold air, especially if the leak is near the beginning of the ductwork run.

If you're not able to identify the cause and fix the problem yourself, contact a furnace repair professional.

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

A properly sized furnace is essential for efficient and comfortable heating. An too-small furnace won't adequately heat the space. An oversized furnace will cycle on and off too frequently, wasting energy and shortening the system's lifespan.. Signs that your furnace may not be correctly sized include::

• High Energy Bills: An incorrectly sized furnace can cause increased energy consumption.
• Inconsistent Temperatures: Noticeable temperature differences between rooms.
• Short Cycling: If your furnace turns on and off frequently, it could be an indication and wasting energy.
• Poor Air Quality: If the airflow from the vents seems weak or there are hot and cold spots, the unit may be the wrong size.
• Excessive Noise: Oversized furnaces can make loud or unusual sounds

If you suspect your furnace is improperly sized, it's essential to consult with an HVAC professional. A Manual J load calculation can accurately determine the appropriate furnace size.. Installing the correct size unit will maximize efficiency and minimize energy bills.

What is the difference between a single-stage and two-stage furnace?

Single-stage and two-stage furnaces differ in their heating output capabilities:
Single-stage furnaces operate at only one output level – full capacity. This can lead to temperature fluctuations and higher energy bills because the furnace is either running at its maximum setting or completely off..
Two-stage furnaces offer two levels of heat output: a lower setting for mild weather and a higher setting for colder temperatures. This allows the furnace to modulate its output based on the actual heating demand, resulting in more consistent temperatures, quieter operation, and improved energy efficiency.Two-stage furnaces provide enhanced home comfort and energy savings compared to single-stage models.

How do I reset my furnace?

If your furnace isn't working correctly, a simple reset can sometimes resolve the issue. Here's how to reset most furnaces:

1. Turn off the furnace: Set the thermostat to the 'off' position.
2. Turn off the power: Locate the circuit breaker for your furnace and switch it off.
3. Wait: Wait a few minutes for the system to reset.
4. Turn the power back on: Flip the circuit breaker back to the 'on' position.
5. Turn on the furnace: Turn the thermostat back on and set it to your desired temperature.

If the problem continues after the reset, don't attempt to diagnose or repair the issue yourself.