How Hot Air Duct Heating Works and Where It Is Used

Most home heating systems in the UK, especially in towns and cities, are gas boilers. If you have a gas supply, then the obvious and often cheapest way to heat your home is with a gas boiler. Warm air is another cost effective way to heat your home.

 

Most home heating systems in the UK, especially in towns and cities, areClick Here. If you have a gas supply, then the obvious and often cheapest way to heat your home is with a gas boiler. Warm air is another cost effective way to heat your home.

 

How Hot Air Heating Works

Air is drawn through the vents and out of the house. This air is heated over a gas flame and then circulated around the property through the ductwork. This type of heating is particularly effective in well-insulated properties and in single-storey properties such as apartments and bungalows, but can also be found in larger residential and commercial properties.
Heating the air directly with a flame is very effective and rivals gas boilers in terms of efficiency, while directing the air into the home is also very effective at heating rooms quickly and helping to prevent damp and condensation build up around the home.

 

Hot air heater

 

Declining Popularity

There are several key reasons for the decline in warm air heating. Firstly, warm air has cornered the market for smaller properties, for example, boiler technology has not yet found an efficient way to fire up small 9kW boilers. Today, boiler technology has solved many of these problems and efficiency has improved significantly, making it more suitable for these types of homes.
Second, warm air technology has not really kept up with these changes, and few large manufacturers have shown interest in the technology, largely because the market is small and there is little demand for duct retrofits to existing buildings.

 

Disadvantages of warm air heating

Unfortunately, there are some very important pitfalls that prevent the large-scale use of the system. These include.

Lack of water heating
Some of these air heating systems cannot heat hot water with the same system, which means they must choose between a separate gas boiler for hot water or using an immersion heater. Both of these options are quite inefficient, so any gains in warm air systems will be offset to some extent by water heating issues.

Retrofitting is tricky
If you installed a warm air system in the initial design of the building, that's great, but trying to retrofit the ducts into the property will be tricky, and you may end up with ducted houses visible everywhere.

Cost and lack of installers
There are only a few models and installers on the market, so prices are not as competitive as boilers and the choice is even more limited.

Moving air can aggravate allergies
As you may have seen in some of our other blogs, heating systems that move air around the room do aggravate allergies because they can easily carry dust into the air. Radiators do this to some extent because of the convective effect of the heat they produce, but warm air systems actively move the air around a room as part of their operation, so they are really bad news for allergy sufferers.

 

Pure oxygen burner

 

When it's worthwhile

For some properties, warm air heating isn't a bad option. Often in smaller properties that are still under construction, built-in ducts are allowed. There are definitely places for this kind of heating in modern, well-insulated properties that are able to build warm air systems. The problem is that there are not enough advantages over conventional boilers to make the effort worthwhile.
 

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