What Do I Need To Know Before Choosing A Fireplace For My Home

While many people agree that a roaring fire on a cold day helps make a house a home, choosing from today’s myriad of fireplace options can be confusing, especially when trying to balance aesthetics with efficiency.

From style to fuel type and heating needs to installation restrictions, there is a fireplace, stove or insert that is right for you and your house.

Traditional fireplaces provide the ambiance of a roaring fire, but send most of their heat and all of the combustion by-products up the chimney.

Today’s consumers not only demand ambiance, but also want to capture the heat while reducing the environmental impact.

Manufacturers have responded with attractive fireplaces, stoves and other options that warm the living areas of your home while saving you money on your heating bill.

Enjoying a fire can be as simple as pushing a button or as engaging as cutting your own wood, building and tending a fire.

Every year, heating product manufacturers offer more products in sizes, styles and colours to match your home décor with features to enhance your enjoyment.

The Fireplace Shoppe can help determine the best product based on climate, lifestyle and your home’s layout.

When would you recommend installing a gas fireplace?

Does a Clean Burn Fireplace Use Less Fuel?

Comparative Fuel Costs For Domestic Dwellings

Fireplace units using different fuel types have very different heat outputs. Operating costs of fireplace units should be compared taking account of heat outputs, fuel costs per hour and fuel costs per kWh.

The tables below compare typical units using different fuel types in terms of the above measures. The costs are based on current prices of particular suppliers in the Johannesburg region. Costs will vary depending upon the fuel supplier and the geographic region. All costs are subject to escalation, unfortunately at different rates for the different fuel types. The tables provide a comparison at April 2011.

Fireplace units with larger heat outputs (for larger volumes to be heated)

FuelAssumptions & notesTypical heat output of fireplace unitApprox fuel costApprox cost per kWh
Wood (in closed system fireplace)
  1. The cost of 2 cords (approx 2 cu m) is R1390 including delivery
  2. A cord is assumed to have a mass of 500 kg
  3. Operation at a level which consumes 1,5 kg of wood per hour is assumed
8 kWR2,09 per hrR0,26
Bottled gas LPG
  1. 2 x 48 kg cylinders (refill only) cost R2080 incl delivery, thus gas costs are R21,67 per kg.
  2. Heat & Glo units have low gas consumptions: the SL550 model uses 0,4kg of gas per hour on full (per Morso SA)
  3. Open gas fires use 0,8 to 1,2 kg of gas per hour on full
Heat & Glo SL5505,5 kWR8,67 per hrR1,58
Efficient open gas fires5 kWR17,33 per hrR3,47
Less efficient open gas fires5,5 kWR20,00 per hrR5,20

 
Open fireplaces burning wood and/or anthracite are not included above as there is little demand for these units at present. An open wood/anthracite-burning fireplace is considerably less efficient than a closed system fireplace.

Wood-burning closed system fireplaces are the most cost efficient by any measure. Heat & Glo gas units are significantly more cost efficient than open gas fireplaces.

Fireplace units with smaller heat outputs (for smaller volumes to be heated)

FuelAssumptions & notesTypical heat output of fireplace unitApprox fuel costApprox cost per kWh
Bio-fuel
  1. A 5 litre bottle of fuel is taken to cost R177,00.
  2. A bottle will last for 8,75 hours (per Syam)
2 kWR20,23 per hrR10,12
Electricity

 

  1. The cost of electricity is taken to be R0,60 per unit
  2. Levies, service charges and the like have been ignored
2 kW

(see note below)

R1,20 per hrR0,60

The electrical costs above are obviously for electrical input, not heat output. The efficiency of the appliance will determine the heat output. Nevertheless, it is clear that electric fireplaces are the most cost efficient for small areas/volumes.

Why Is A Clean Burn Fireplace More Efficient?

Why Are Clean Burn Fireplaces Safer?

The Advantages of High Efficiency Gas Appliances

With the current and future threat of load shedding from Eskom it is time to take stock of the alternatives to electricity as a primary source of fuel.

With forethought there is no need to be without hot water, hot food or warmth in the event of power cuts.

STOVES/HOBS
When cooking with gas there is no warn-up or cool-down time. The effect of an adjustment on the control valve is instantaneous on the pot.

A gas flame is infinitely variable thus making temperature control (eg. simmering) far easier.

Cooking uses relatively small amounts of gas. Most homes would use less than one 48kg gas bottle in a year on gas cooking, making this an economical source of heat.

Although most gas cookers are equipped with an electric ignitor that requires mains electricity to function, the cookers will continue burning in a power cut and can be lit manually with a match or lighter. QAlternatively a small UPS system will provide enough power to operate the electronic ignition in the event of a power cut.

Many chefs and restaurants insist on gas cookers as the convenience and consistency of heat is better.

Most modern cookers have flame failure devices built into the unit which will switch off the gas in the event of the flame not being lit. This prevents kids playing with the gas or the potential of un-burnt gas escaping into the house in the event of a gas supply problem. This makes them very safe.

GEYSERS
Gas geysers do not preheat a tank of water but rather provide instantaneous heat when required.

This means that energy is not wasted in heating a water tank when t is not being used. Think of the energy wasted in an electrical geyser when you are away for a few days or even for the 12 or so hours every day when people are not showering/bathing.

Providing you have gas you will not run out of hot water in the event of high usage. Great for those times the teenagers have 30 minute showers leaving no hot water for the next person.

When switched on the average geyser provides some 25kw of heat energy. This is equivalent to about 8 electric geyser elements running simultaneously to ensure a good volume of hot water.

Gas geysers need to vent the fumes of the combustion to the outdoors. At peak hot water output they will burn over twice the gas consumption of a big stove, meaning that a lot of oxygen is consumed and a good amount of carbon monoxide/dioxide is produced. This means they must either be located outside the home or be provided with a flue to the outside.

This article courtesy of Finest Fires

Pre-fabricated Chimney Breasts

moulded-surround2Very often a built-in fireplace is required to be installed in a position which does not have a chimney and the depth of the fireplace (front to back) is more than the thickness of the existing wall. Under these circumstances it is necessary to construct a chimney breast. The chimney breast houses the body of the fireplace and the flue up to at least ceiling height.

Traditional construction of a chimney breast is in brickwork, which is labour-intensive and a somewhat messy activity, particularly irritating to the home occupants.

The Fireplace Shoppe has developed a system of installing a pre-fabricated chimney breast. The chimney breast is constructed of dry walling material capable of withstanding temperatures of up to 800 degrees Celsius.

Advantages of a pre-fabricated chimney breast:-

  • Installation time is reduced from 3 or 4 days to 1 day
  • Reduced installation time means a lower price of installation to the customer
  • Installation is a very much cleaner operation
  • The completed installation is visually identical to a brick chimney breast.

A pre-fabricated chimney breast can be painted or finished with cladding, depending on the aesthetic requirements.

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