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The fireplace opening should measure between 1/30 of the room’s square footage for smaller rooms and 1/65 for larger rooms. For example, in a 300 square foot room, the perimeter of the opening should measure approximately 10 feet. A common fireplace size of 36-inches by 29-inches would work well in this space.
For those who must put their TV above the fireplace, we recommend that the fireplace be at least as wide as the TV, and possibly wider. Today’s most popular fireplaces are what we call ‘linear’, meaning they are much wider than they are tall. As these fireplaces get wider, they do NOT get taller.
If you want to add a wood-burning fireplace, you need space above to get a chimney through the roof. In two-story houses, choices for placing the fireplace might be more limited, but often you can find the 12- to 14-inch space the chimney requires by enclosing a corner of a room or a spare closet.
As a basic benchmark, a small gas fireplace will heat less than 500 sq. ft., a medium gas fireplace will heat between 500 – 1,000 sq. ft, a large gas fireplace will heat between 1,000 – 2,200 sq. ft., and an extra-large gas fireplace will heat over 2,200+ sq.
The fireplace opening should be sized based upon a relationship with the chimney flue. An ideal fireplace opening would be no more than ten times the cross sectional area of the chimney flue. … If a fireplace opening is too large it will allow more air into the fireplace than the flue can exhaust.
The standard size of a fireplace is anywhere from 2 – 3 feet wide, 24 – 29 inches high, and always about 16 inches deep. Of course, the opening could vary depending on your style and design ideas, as well as where you are locating the fireplace.
- Decide on the fireplace’s main purpose. …
- Don’t buy a fireplace with the intention of heating more than one room. …
- If you’re looking for heating efficiency, consider a thermostat-controlled, self-modulated fireplace.
Measure the length, height, and width of the firebox and facing. A mantel should extend a minimum of 3 inches beyond the firebox opening. If the fireplace has facing around the opening, the mantel can also extend 3 or more inches beyond that.
The recommended width for a mantel is 6 inches (15.24cm) wider on both sides. So, if your fireplace is 36 inches (91.44cm), your mantle should be at least 48 inches (121.92cm) wide. Whether you want to install pilasters or not, you’ll need to have the same width for your fireplace mantle.
For single-volume spaces a quick tip and rule of thumb would be to specify 1kW per 10m2. Calculate your room’s volume (m3). Measure your room width, length and height. Multiply those figures with each other to get your room volume.
Typical Gas Insert Sizing Most fireplaces, whether gas or wood burning, typically have openings that are nominally 36 inches or 42 inches wide.
Gas fireplaces are an efficient type of fireplace that are typically good at providing heat for the room in which they are located, and can be much more efficient and produce more heat compared to the existing masonry fireplace they replace.
Although it varies greatly, Regency’s gas fireplaces typically produce between 20,000 and 48,000 BTU’s, enough to heat an apartment or a mid to large room.
The ideal flue size is typically determined by the exhaust outlet of the stove or appliance. The rule of thumb for sizing a chimney liner is that you never want it to be smaller than the appliance exhaust hole and you don’t want the liner to be three times the area of the exhaust hole of the appliance.
The area of the flue should be roughly 1/12th the size of the opening area. If the flue is too small, the fireplace will smoke. In this case, the taller the chimney the better – chimneys that are too short will cause draw issues.
As a general rule, the diameter of the chimney should match the flue collar on your wood stove. A 6-inch stove requires a 6-inch flue. In most cases, a step up is also fine. For example, you could vent a 6-inch stove into an insulated chimney that is 8 inches in diameter.
The part of the fireplace that holds the fire is called a firebox or a firepit. There is a chimney or flue above the firebox that lets the smoke from the fire go outside. Until the early 1900s, most homes had one or more fireplaces as a source of heat for the residents of the house.
The National Fire Code dictates that any combustible material (e.g., wood mantel or similar trim) must be at least six inches from the firebox opening. An additional inch of clearance is needed for every 1/8 inch the combustible material or trim protrudes.
As a general rule, a mantel is placed about 12 inches above the fireplace opening. Add an inch to the distance for every inch that the mantel protrudes. So, a mantel 6 inches deep would be attached 18 inches above the firebox opening.
- Sizing. Mantel Length: This is the most contentious part of sizing a mantel. …
- Mantel Face Height: Is your fireplace in a large or small room? …
- Mantel Depth: Consider the amount of traffic that happens around the fireplace. …
- Mantel Height: We recommend installing the mantel 4.5′ from the floor.
For example, a room measuring 7m long by 4m wide and with a height of 2.5m is 70 cu. m. of space. Divide by the sum by 14 and this means you will require a 5kW stove.
One thing you’ll notice if you’re looking round at wood burning stoves to buy is the constant mention of heat output. You’ll see a number followed by the letters kW. This stands for the number of kilowatts a particular stove could generate.
If you’re heating a whole home by way of a ducted heat transfer system, look upwards of 20 kilowatts. Right here we’ve got a 26-kilowatt beast.
Rear width needs to be at least as wide as the log set Depth should be 12-14 inches. If you are measuring for a see-thru gas log set, the depth needs to be 16-18 inches. The height of the firebox opening should be a minimum of 18 inches to accommodate most gas log sets.
You can run a vented gas fireplace all day with little concern for anything other than gas usage.
So the question is not so much which one emits more heat; it’s which one prevents the loss of more heat. In this regard, the gas fireplace clearly comes out on top. However, we cannot deny the greater pleasure people get from the crackling sound and wonderful aromas of a wood fireplace.
A homeowner can often recover over 100 percent of the expenses associated with adding a fireplace upon selling their home. According to the National Association of Real Estate Appraisers, adding a fireplace to home can increase the resale value of the home by as much as 6-12 percent.
Room TypeRoom SizeRecommended BTU12 x 12 room144 sq ft6,000 BTU12 x 24 room576 sq ft14,000 BTU13 x 13 room169 sq ft6,000 BTU14 x 16 room224 sq ft7,000 BTU
Rule of thumb. A 1 ton (12,000 BTUH) unit is doable in the space you want to cool. To handle the hot, humid summer heat of your area, I would increase it to 15,000 – 16,000 BTUH.
Heating Output:Square Footage (Standard Climate)Square Footage (Very Hot Climate)15,000 BTU333,3 sq ft500 sq ft20,000 BTU444,4 sq ft666,6 sq ft25,000 BTU555,5 sq ft833,3 sq ft30,000 BTU666,6 sq ft1000 sq ft