Is it better to undersize or oversize AC?

A properly sized unit will kick on and off periodically to control the temperature. Undersized air conditioners will struggle to ever get the room cool enough and therefore will fail to go through healthy on and off cycles. This extra wear and tear will lessen the life of your ac and cost you more in repairs.

What happens if BTU is too high?





A unit with too many BTU’s, will cool the room fast, but leave the room humid. Too few BTU’s will never cool the room down and the unit will run incessantly.

What happens if you oversize your AC?

Since an oversized AC is too powerful for your home, it will quickly cool your home then shut off, which can raise your energy bills and wear out your AC (from all the starts and stops).

Can you oversize a heat pump?

So, yes, you absolutely can oversize a mini-split. And when you do, you end up with some of the same problems you get from oversizing conventional systems: poor humidity control, short cycling, and wasted money.

How many BTU do I need for a 20×20 room?

As a general rule, a 20×20 feet or 400 square feet room should use a 12,000 BTU or 1 Ton air conditioner. If your room is heavily shaded, you can save cost by using a 9,000 BTU or 0.75 Ton air conditioner.

What’s better 14 SEER or 16 SEER?





A 16 SEER unit is about 13% more efficient than a 14 SEER. For every $100 you spend to cool your home with a 14 SEER, you could save $13 on your monthly bill by upgrading to the 16 SEER unit. But just like gas mileage, your ability to meet this maximum efficiency and savings depends on a lot of other factors.

Is a higher BTU AC better?

A measure of an air conditioner’s power is its BTU rating. BTUs are the energy used to remove heat from a room. Therefore, the more BTUs an air conditioner unit has, the better equipped it is to cool a larger space.

What is a good BTU for air conditioner?

Generally speaking, an air conditioner needs about 20 BTUs for each square foot of living space that it’s cooling, according to ConsumerReports.
Choosing the right BTU for your air conditioner (and your home)

House Square Footage BTUs Needed
400-450 10,000
450-500 12,000
500-700 14,000
700-1,000 18,000

Is 8000 BTU a good AC?

An 8000 BTU air conditioner is powerful enough for a bedroom. An average bedroom is between 132 to 219 square feet. And both an 8000 BTU window air conditioner and portable air conditioner can cool a bedroom of this size.

Is it better to oversize or undersize a heat pump?



Overall, an undersized heat pump is better than an oversized one. An undersized heat pump will take longer to change the temperature. But, the unit won’t be as loud and will last longer. An oversized heat pump will turn on and off more frequently, which will use more electricity.

Is a bigger heat pump better?

When it comes to Heat Pumps, bigger is not always better. If air conditioners and air conditioning systems are too big, they can cost more to purchase in the first place, they will use more electricity, increase humidity, and turn on and off more frequently – which wears them out faster.

How do I choose a heat pump size?

Rule of Thumb — The maximum size unit you should buy would be 15% over the BTUs you need for cooling and 40% of the BTUs for heating. The max for heat pumps is 25%, since it handles both cooling and heating.

What size heat pump do I need for 2000 sq ft home?



Heat pump size guide

Home size (in square feet) Heat pump size (in tons) Heat pump size (in BTUs)
1,000 square feet 2 tons 24,000 BTUs
1,500 square feet 3 tons 36,000 BTUs
2,000 square feet 4 tons 48,000 BTUs
2,500 square feet 5 tons 60,000 BTUs

How many BTUs do I need?

Size and Ceiling Height

Area To Be Cooled (square feet) Capacity Needed (BTUs per hour)
100 to 150 5,000
150 to 250 6,000
250 to 300 7,000
300 to 350 8,000

How big of a heat pump do I need for 1200 square feet?

General rules for a rough calculation

For a heat pump or wall-mounted air conditioner, it’s about 1,000 BTU per 100 square feet. So for a 1,000 to 1,200 square foot area, your heat pump would be about 12,000 BTU. For the same area, if space is limited, the power can be reduced to 9,000 BTU.

How many square feet will a 12000 BTU heat pump?



12,000 BTU – ~550 sq. ft to ~800 sq. ft.

What is a good SEER rating?

A good SEER rating is typically 14 or higher.

The average efficiency rating for a central air conditioner in operation today is 16 but high energy-efficient models can have ratings as high as 23.

How many square feet does a 3 ton heat pump cover?

1,500 square feet



Therefore a 3-ton heat pump will be rated at 36,000 BTUs per hour. This means a 3-ton has a capacity to cool and heat than a 2-ton unit. A 3-ton can effectively cool or heat an area of 1,500 square feet but can be too big for a smaller space.

How good are Goodman heat pumps?

Goodman heat pumps have a good reputation as a mid-range brand, and while reliable, other top-name brands may be more reliable. Goodman heat pumps require that homeowners schedule a professional tune-up for their central heating and cooling system at least once a year.

How many square feet will a 80000 BTU furnace heat?

80 X 1,000 square feet

80 X 1,000 square feet = 80,000 BTUs.