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How Does a Furnace Work?

Written on: November 21, 2022

Johnny Prescott takes care of all your furnace needs!

furnace service new hampshire Johnny Prescott and our company are happy to help with your home’s furnace in New Hampshire. We provide furnace installation, maintenance, and repairs conducted by our team of trained and skilled service technicians.

Our reliable propane and heating oil delivery services give you peace of mind that your furnace will always have the fuel it needs to keep your home warm, safe, and comfortable throughout the entire winter.

If you have a furnace in your home but don’t know much about it, read on for some frequently asked questions that may help.

How does a furnace work?

Ancient Romans were the first to try a central heating system, which they called a hypocaust. This technology was used for warming bathhouses and other public buildings. Over time, it became a status symbol among the wealthy and was adopted throughout Europe and Africa. Unfortunately, the hypocaust turned out to be dangerous because of the risk of fires or suffocation.

The furnace is one of the oldest types of heating systems still being used today. In 1919, Alice Parker invented and patented the modern central heating system, which resulted in the creation of furnaces as we know them now. Originally, furnaces were powered by coal and wood, but nowadays they use heating oil, propane or natural gas instead.

The furnace turns on when the air in your home drops below your desired temperature setting on your thermostat.

The burner is where your fuel is combusted. The heat exchanger is where the combusted fuel heats the air coming into the furnace through the vent. The blower fan distributes that air throughout your home using your ductwork.

What needs to be done to take care of a furnace?

Keeping your furnace running smoothly is simple.

The best way to keep your furnace in excellent condition is by getting an annual maintenance tune-up. Johnny Prescott’s service technicians will clean and optimize every component of your furnace so that it runs at peak efficiency, saving you money on energy costs. A routine tune-up also allows our team to identify any potential issues and fix them before they escalate into larger problems requiring furnace repairs.

Checking and changing your furnace’s air filter regularly is essential for keeping it working properly. Over time, dirt and debris can build up in the filter, reducing its efficiency and potentially damaging parts of the furnace. To avoid this, check the filter monthly and replace it as needed.

How long will my furnace last?

A furnace typically lasts 10-15 years, but professional maintenance can help extend its life.
Replacing your furnace may seem like a daunting task, but it could be more beneficial in the long run. Older furnaces can become less efficient over time if not properly maintained, thus costing you more money in energy bills. If repair costs are more than half of what replacing would be, then replacing your furnace is the wiser choice from a financial standpoint.

If your furnace has not gotten its tune-up this year, it’s time to get it done so it’s ready for winter! Contact Johnny Prescott for your appointment.