Those of you who are about to purchase a brand new HVAC system are welcomed with an entirely new vocabulary. Instead of seeing the normal square feet metric, you are going to be faced with a measurement in “tons”. These are not the same tons which semi-trucks are used to haul on the freeway, however, this is a convenient metric which is used to measure the cooling rate and it is more or less equal to 12,000 BTU/hour. The properly sized system is going to be effective and efficient, but load calculations are very important to make this happen.
The HVAC may seem like a rather complicated and brand new world, you might be tempted to take advantage of the general “rules of thumb” to determine the size of the system. This is not something that you should consider. Other people are likely to provide you with an average amount of tons per square foot and this is also something that you shouldn’t really contemplate.
With this in mind, the thing that you need to take into account is an accurate, individualized sizing and calculation which is tailored to your home. It’s as easy as this. Consider this – you go out to buy a shirt and you are wearing a medium-size. You know that medium sized shirts differ from one store to other depending on the cut, the manufacturer and so forth. Well, it’s the same with HVAC systems and measurements.


There are a lot of different factors that need to be accounted for. Right off the bat, the insulation of the property is critical. While you might consider that yours is made of “brick” and that would be enough – it’s far from being the case. In fact, there are different types of insulations, the doors and the windows are also going to matter, the height from the floor to the ceiling would determine the overall amount of air which needs to be treated and so forth.
It’s quite obvious that using the regular and commonly suggested “rule of thumb” is not something that you ought to do. You need to get a specialist, enter him into the property and have him consider everything of importance. He would then use the Manual J calculation and make sure that all aspects are handled properly.
This is going to result in a system which is particularly sized and tailored to your space, making sure that it’s optimized and perfectly efficient. There are a lot of things that you need to account for and as such, it is important to rely on someone who has the necessary expertise and experience to make sure that all aspects are considered and is handled perfectly. HVAC contractors understand all aspects with such accurate calculations to help you save more energy, yet ensure that the unit offers optimized performance. This is only possible when you have the right sized HVAC unit.