What Size Furnace Do I Need For A 2000 Square Foot Home

Buying a new furnace is a major decision these days since there is and then much pick on the market, including different brands, models and variants, technical capabilities, furnace types, and efficiency ratings. Simply one of the most essential factors to consider before purchasing a new furnace is the size that is platonic for your home.

Installing a correctly sized furnace is more just estimating the square footage of your home. When sizing a furnace, in that location are several factors you need to consider. Now, we'll review what those aspects are, why it's essential to properly size a furnace, and how you lot can buy a furnace that'due south the perfect size for your location, environment, and comfort goals.

The goal of this article is to guide you in choosing the required size of furnace for your heating needs. It is calculated past taking the required heating BTU per square foot for near homes and your climate zone. Our heating BTU reckoner takes these disquisitional things into consideration, allowing you lot to give an answer for common questions equally "how many BTUs to heat a home?" or "What size furnace do I need?"

The BTU per square foot heating rule of thumb varies greatly depending on your climate and the area of your house or room y'all wish to heat upward.

Why choosing the all-time Furnace Size Is So Important?

Although it may be tempting to choose a smaller furnace to save money on the buy price or a larger furnace to boost infinite-heating, just with furnaces just every bit with so many things in our lives we should follow the rule of Golden mean: you need one that is just perfect, for your abode.

A furnace which is far too powerful will bicycle irregularly. This is problematic because it volition generate hot and cold zones effectually the home, decrease efficiency, require additional maintenance, and shorten the furnace's lifespan.

A furnace which is undersized will operate continuously and won't exist able to maintain a comfy temperature in your home. The additional workload will as well increase your free energy costs, cause maintenance issues, and shorten the life of your furnace.

Another drawback of having a furnace that is the wrong size is that information technology will reduce your heating system'due south overall efficiency.
The AFUE (Annual Fuel Utilization Efficiency) is the thermal efficiency measurement of a furnace based on normal performance. The AFUE tries to represent the equipment's actual, season-long average efficiency, taking into account all operating factors.

Yous won't be able to get the efficiency rating you paid for if your furnace runs continuously or irregularly because it is the wrong size. That means more energy use and higher heating expenses.

Your furnace must exist correctly sized for your abode in gild to perform at the efficiency level it is rated for.

How many BTU exercise I demand for my business firm?

That is a crucial question that must be answered correctly. On the coldest winter days, a furnace that is style too undersized will not oestrus your home properly. Areas farther away from the furnace may get uncomfortably cold in your abode.

An oversized furnace will waste large amounts of energy, and create hot patches around vents shut to the furnace before the heating cycle stops.

When you talk about furnace size, yous are not talking about the actual physical dimensions of the unit of measurement. Rather, the size of a furnace is determined by its heating output and the amount of estrus it tin provide.

The output of a furnace is frequently measured in British thermal units (BTU) per hour. A BTU is a unit of measurement for energy, particularly the corporeality of energy necessary to raise the temperature of one pound of h2o by one degree Fahrenheit. Heat is now understood to be the aforementioned as energy. The joule (J) is the current SI unit for oestrus and energy; one BTU equals about 1055 J.

Furnace BTU

You need to call up, that "BTU/h" is sometimes abbreviated to but "BTU". The modern unit of power for heating and cooling systems is the watt. 1000 BTU/h is approximately 293.ane W.

Some manufacturers have started to calculate furnace size in MBHs rather than BTUs. One MBH is 1000 BTU per hour, then y'all're still using the aforementioned unit of measurement: 60 MBH is equal to 60000 BTU.

The full general BTU per foursquare foot heating rule of pollex varies from 30 BTU per square pes to threescore BTU per square pes based on your climate zone. That is a significant variation, with one furnace being twice as powerful as the other, so the size factors are explained hither to assist y'all in how to size a new furnace for a house.

A bigger furnace, such as one with an output of 120000 BTU per hr, will provide enough heat for a larger space. A smaller furnace will have a smaller BTU capacity, such as 40000 BTU per hour, and would exist suitable for only a smaller pace.

Calculating BTU requirements for a firm

Let's outset with this very useful map. The climate becomes progressively colder from zone one to three.

Find your location on the map. If yous're on or shut the border between two zones, choose the higher number, the cooler zone.

Canada climate zones

Take the foursquare footage of your home. If you don't know it, yous can look upwardly the blueprint of the house, or measure rectangles within your home. Multiply the width past length for each rectangle and add together them together.

It is non quite accurate, only notwithstanding very useful for our purposes. While you shouldn't apply this calculation to make a final decision nigh furnace size, you can use it to get an idea of the size range to look at when y'all buy a new furnace. You tin can become a basic estimate using the square footage of your house.

The full general rule of thumb is that you lot demand between 30 and 60 BTU per foursquare foot. Depending on your climate zone, you can determine how many BTU per square human foot y'all need.

Furnace BTU sizing chart

Square footage	Furnace BTU for Zone 1	Furnace BTU for Zone 2	Furnace BTU for Zone 3
one thousand	30000 BTU	45000 BTU	60000 BTU
1250	37500 BTU	56250 BTU	75000 BTU
1500	45000 BTU	67500 BTU	90000 BTU
2000	60000 BTU	90000 BTU	120000 BTU
2500	75000 BTU	112500 BTU	150000 BTU
3000	90000 BTU	135000 BTU	180000 BTU

Permit's say you live in the Greater Toronto Area (Zone 2), in a home which is 2000 square feet. The chart would tell that you need approximately a 90000 BTU furnace.

These are only examples with approximated values to show how these factors would affect the furnace size y'all demand to buy, how many BTUs needed to heat a business firm.

Professional furnace sizing

The all-time mode to ensure your furnace is the right size for your home is to get an evaluation from a professional HVAC practiced at Furnace Pro.

Furnace Pro Inc. has been proudly providing professional Furnace Installation services to accurately calculate the square footage of your abode, gene in all the other elements that can impact furnace size, and requite you a precise BTU capacity for your furnace.