# Space heaters are a reliable way to provide heat to your home, but having the wrong size unit can cause major headaches.

If the space heater is too small, it won’t be able to generate enough heat and drive up your energy costs as it exerts effort to warm a space beyond its capacity. If it’s too big, you’ll be paying for extra heating capacity you never use.

## Measure the room

For a square or rectangular area, you will need to measure its length and width. Then multiply the two measurements. Length x Width = Area. Given the formula, if your room measures 11 feet wide by 15 feet long, your total area will be 165 square feet.

## Calculate the wattage

One rule of thumb proposes that it takes 10 watts of electricity to heat one square foot of space. If your room is 165 square feet, then it will require 1,650 watts.

## Conversion to BTU

BTU is a standard unit of measurement in air conditioners and heaters. For space heaters, they measure heating capacity or the amount of energy added to the air. One watt equals approximately 3.41 BTUs. A 165-square foot room with 1,650 watts will require a space heater that provides 5,626 BTUs.

## Your room’s feature is essential.

Your windows, the ceiling heightinsulation, and even a space heater as a supplemental heating method are a few of the considerations to note before finally choosing your space heater.

Windows are often poor insulators, even the best ones. Windows makeup approximately eight percent of a typical home but are responsible for up to twenty-five percent of its heat loss. Increasing your space heater’s wattage is one of the few ways to compensate for this persistent heat loss.

Heavily insulated rooms require less power to heat them, only 7.5 watts per square foot. Lightly insulated spaces require roughly 12 watts per square foot. Rooms without any insulationâ€“ typically garages, basements, and work shedsâ€“ aren’t well suited for having a heater.

## Safety is a priority.

When using a space heater, it is imperative not to overlook safety. According to reports, on average, 40% of home fires result from the misuse of a space heater. The most frequent accidents transpire when flammable materials come in contact with the space heater. Before use, we advise that you take the following preventative measures to ensure that a disaster doesn’t befall you and your loved ones:

Never consider using an extension cord to connect a heater.

Damaged heaters with missing parts need to be replaced or serviced before use.

Keep doors and windows closed during use. Rain and moisture can cause the unit to break or cause a fire.

Maintain a 3-foot safety zone for children, so they do not come within 3 feet of the heater. Do not leave children unattended during use.