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Sizing your HVAC System: Is Bigger Always Better?

February 25, 2019 | Blog

In the professional air conditioning and heating world, there are many factors to consider when choosing the best HVAC system size for your home. If you’re thinking a bigger system is more powerful, you’re correct. However, without properly calculating the best size for your home, bigger doesn’t always mean better. An oversized air conditioner will lead to spending more money on your monthly bill and leave you feeling sweaty inside your own home.

The Problem with Oversized HVAC Systems

You might think that your air conditioner is doing an amazing job of cooling your house down if it clicks on and off right away. Although it’s getting the job done quickly, short air cycles are terrible for the lifespan of your HVAC system and decrease your indoor air quality.

During full-length cycles, your air conditioner cools down your home while removing moisture from the air. This means if your system isn’t properly sized, it isn’t going to efficiently do its job and will cause high indoor humidity levels.

An oversized air conditioner will work too quickly when attempting to heat your home. Too much heat in a short amount of time will falsely satisfy your thermostat setpoint and cause your HVAC to start-up and shut-down more often than it should. Your system will blow large bursts of hot air and heat up areas around the vents but won’t stay on long enough to heat your entire house. This means areas near the vents will continue to stay warm while the rest of your home remains noticeably cool.

Choosing the Right Air Conditioner for Your Home

Having a properly sized air conditioner will save you money in the beginning as well as in the long run. A bigger air conditioner is going to cost more money to purchase and install from the start. In addition, short cycles have to run more frequently to maintain the setpoint temperature in your home. This raises the cost of your bills and overworks your system, leading to more maintenance and repairs and a shorter life span for your HVAC.

Whether you are building a new home or replacing your HVAC system, remember that bigger isn’t better when it comes to choosing an air conditioner. Make sure the necessary calculations are being done to ensure you are properly sizing your system and getting the best bang for your buck. Call Lee’s Air today for help figuring out the right size system for your home.

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