How A Central Heating System Works In A House

Last Updated on December 6, 2022 by Vernon Scott

How A Central Heating System Works In A House

Electricity consumption from central heating systems often increase the bills. However, their importance to human survival can’t be overemphasized. We need heat to cook meals, warm the body, and survive. To make your home’s interior space feel comfortable, use a functional central heating system. It won’t be a big deal, except you live in tropical countries. Let’s see how central heating systems work.

What And How A Central Heating System Works In A House

The system that supplies heat to the whole interior of a house through a spread of air ducts. As a distribution system, the home’s interior feels comfortable with central heating installations.  Usually, the central heating system works with a primary heating appliance.

Common primary heating systems could be a furnace or boiler. Unlike old fireplaces, central heaters can warm the space of separate large rooms simultaneously. This central heating system includes a cold water storage tank, and boiler (or furnace). Other components include filters, thermostatic controls, pump, and small tubes.

What Are Boilers?

Condensing gas boilers are equipment that runs on internal combustion of hydrocarbon gases (fuels). Usually, modern central heating systems use clean (natural) gas. Oxygen and fuel mix in ratios inside internal combustion engines. During this process, carbon dioxide and steam are discharged as waste products.

According to manufacturers, a low-efficient central heating system could allow heat to escape with the waste products. Boilers are important because they send warm, and receive cold water from the radiators.

Without the heat exchanging unit, the boiler would lose its functions. However, condensing boilers are energy-efficient; they don’t discharge heat with the wastes from combustion.

Unlike efficient boilers, a non-condensing boiler electric fan increases the loss of heat. They help exhaust gases leave faster with valuable heat through the flue. However, they are cheaper and have less-complex designs. The condensing boiler has more efficiency because they have special pipes for extracting moisture through condensation.

How Central Heating Systems Work – What You Should Know

  • They work by pumping warm air or hot water through multiple channels. These heated molecules move rapidly through the air ducts. As warm warmer air rises to cold areas, your home turns warm. Other types of systems work by using steam to warm spaces.
  • Common sources of fuel for central heating systems are natural gas, oil, or electricity. The concept is to produce heat for the air in your home. When natural gas comes into your home, the boiler converts the fuel into heat. It’s like storing hot water and sending jets of it through a network.
  • An efficient central heating system doesn’t need supplemental heat. However, use an electric baseboard heater if your homes lack a central heating system. In the central heating system, its boiler uses a closed-loop technique. The system’s radiators send cool water to the boilers and give off heat through another pipe. Each radiator receives in turn from the pump.
  • With the continuous flow of hot water from the boiler,  the system receives and keep the space warm. The circulation of heat energy is a smooth operation because of the system’s electric. Usually, the pipes of a central heating system are sealed.
  • From the pumps, they flow into water radiators. Small tubes from the radiator produce heat through air ducts. While boilers send warm water, pumps reduce their temperatures. Coldwater is often stored in a separate tank of the system.
  • In the central heat distribution systems, furnaces send hot air to ducts. The air goes through pipelines under walls, floors, and inside ceilings. Also, modern HVACs use ducted air systems (forced-air and gravity) to provide warmth.
  • Naturally, the gravitational force in central heating systems sends low-density hot water. It also circulates the water with convection currents. Gravity-fed systems use electric pumps. With these high-pressure pumps, water can flow through radiators and boilers with ease.

How Do Components Of Central Heating Systems Work?

  • Radiators and convectors are very important in centralized hot water heating systems. One of the benefits of central heating installations is the use of their pipes for cooling. Usually, ducted air systems are versatile. They can handle air circulation from air conditioning units and heat pumps.
  • The radiant system of distribution is ideal for under-floor heating in homes and offices. Also, your room’s walls and ceilings can be connected to heat radiators.
  • During the winter many people use electric heating panels and radiators for warmth. However, they can’t use radiant heating systems with air conditioners in the summer. 
  • Alternatively, heat pumps are compatible with both heating and cooling systems. High-pressure electric pumps can circulate heat in the top floor of high rise buildings.
  • Convectors that work with gravity furnaces can supply heat trough in-floor ducts. Naturally, hot air rises with pressure and circulates. In central heating systems, gravity furnaces don’t use blowers. Instead, their air ducts are wide open to send warm air. Apart from furnaces, convectors can receive hot water from boilers.
  • Another type of central heating unit is called the hydronic system. This system uses circulator and pumps to distribute heat.

What You Should Know About Programmable Thermostats

  • Programmable thermostats are smart ways of regulating temperature. Do these electrical units provide the best solution for conserving heat?
  • Apart from the manual thermostats (knobs), there are remote-controlled systems. Most people don’t enjoy the convenience of switching electric heaters on and off. Instead, adjustable thermostats do the task when they feel too hot.
  • Unlike small thermostats, a central heating system’s boiler has modern electronic programmers. You might need to wake up warm in a cold winter morning. With an electronic programmer, you can control the boiler from wall-mounted thermostats.

Can People Minimize Heat Loss With Space-Heating Systems?

  • To prevent loss of heat, builders recommend home insulations. In our electric baseboard heater guide, we learn how they are efficient with insulating materials. Generally, heating systems with an efficiency of over 90% are great.
  • The mechanical components of your heating unit also work with thermostatic controls. In modern central heating systems, you’ll see thermostats like radiator valves. They regulate the combustion inside boilers less often. With thermostats, you can control the temperature of hot water from boilers, and minimize heat loss.

Final Note

Since it’s possible to lose heat through efficient central heating systems, it’s better to warm your living space when it’s cold. Trying to regulate the temperature (from high to low) with thermostats can’t save more than on-demand heating techniques. You’ll often need more heat to maintain the right room temperature with thermostats than switching off the system.

I am a Trained HVAC Technician and Author of EmiNick. I have been in the industry for over 10 years and have gained a wealth of knowledge and experience. I have been involved in all aspects of HVAC, from design and installation to repair and maintenance. I am also a certified energy auditor and have experience in conducting energy audits for both residential and commercial customers. In addition to my HVAC experience, I am also a certified home inspector and have conducted many home inspections for both buyers and sellers.

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