Free In-Home Estimate

At Bertie Heating & Air Conditioning, our Comfort Specialists will spend about 90 minutes in your residence or commercial building to gather everything we’ll need to install/replace an HVAC system.

This process includes:

  • Assessing the electrical or gas components
  • Inspecting duct system
  • Performing a Manual J load calculation

Load Calculation

Over time, the efficiency of your home may change. This can affect the load calculation and may require a different-sized unit than when the house was originally built.

The load calculation is the first step of the design process of a new heating and air conditioning system. HVAC designers are able to determine the total amount of heat that is lost through the home during the cooler months, and the total amount of heat that is gained in the home during the warmer months. In addition, a load calculation takes into consideration factors such as the home’s geographic location, orientation to the sun, envelope tightness, duct leakage, lights, and appliances. The purpose of the load calculation is to determine the homeowner’s comfort level and remedy the situation if something is wrong.

Two types of Manual J load calculations:

Whole House or Block HVAC Load Calculations.

These calculations provide the heating and cooling loads for the entire home. This type of calculation is used when there is no need to design or modify an existing duct system. Whole-house load calculations are commonly used to determine the correct HVAC equipment size that is required when replacing the HVAC system in an existing home.

Room-by-Room Load Calculations.

These calculations provide the heating and cooling loads for individual rooms within the home. In addition to the information produced by a block load calculation, the room-by-room method determines the amount of air that is required to heat and cool each individual room. This information is critical when determining the individual duct sizes as well as the size and overall layout of the duct system.

What is a SEER Rating?

Air Conditioners are given a number that represents how efficient an air conditioner is as long as it is kept clean, maintained regularly, and properly installed. This number is called a SEER rating (Season Energy Efficiency Rating). New air conditioners have a minimum 14 SEER rating although many are ranked higher. Older air conditioners can be as inefficient as a 6 SEER or worse. These units were most likely built before the latest efficiency regulations.

Selecting the Right HVAC Unit

The right air conditioning unit can drastically improve the comfort in your home or business and save you money on your utility bills. Our experts can recommend the correct size and capacity unit for your home or business. We pay particular attention to matching the air conditioning unit with your furnace to maximize energy efficiency in your home or office.

We offer a variety of manufacturer’s products specifically designed for your needs and budget. You may notice that manufacturers will offer exceptional incentives on air conditioners and furnace combination packages. Our Comfort Specialists are especially knowledgeable regarding these offers, and we do everything we can to help our customers receive the maximum benefits of both manufacturer and utility company rebates.

Importance of Proper HVAC Installation

At Bertie Heating & Air, our professionals have been installing, maintaining, and repairing HVAC systems for more than 20 years. Our installers are trained by the manufacturer to be sure we’re educated in the proper installation of each product line, and they participate in weekly in-house training for continued education. If you’re in need of a new system, you can call Bertie and be sure that you’re in the best possible hands. Fill out a contact form or give us a call today! (352) 331-2005.

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