Call today for a free in-home estimate! Our Comfort Specialists spend about 90 minutes in the residence, or light commercial building, to gather all requirements to install/replace an HVAC system. This process includes inspecting the electrical/gas components, duct system, and performing a Manual J load calculation – as recommended by the Air Conditioning Contractors of America (ACCA). Some homeowners change the efficiency or dynamic of the home which affects the load calculation and may require a different-sized unit than when the house was originally built/manufactured.
The load calculation is the first step of the HVAC design process of a new heating and air conditioning system. HVAC designers are able to accurately 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 through the home during the warmer months. Through a complex series of calculations and inputs, the HVAC designer is able to analyze the thermal characteristics of the building. In addition, a load calculation also takes into consideration other factors such as the home’s geographic location, orientation to the sun, envelope tightness, duct leakage, lights and appliances. The load calculation’s purpose is to help determine the homeowner’s comfort level which includes the removal of humidity in the air.
There are two types of Manual J load calculations:
Whole House or Block HVAC Load Calculations provide the heating and cooling loads for the entire home. This type of load 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 and match-up that is required when replacing the HVAC system in an existing home.
Room-by-Room Load Calculations provide the heating and cooling loads for each individual room within the home. In addition to the information produced by a block load calculation, the Room-by-Room method also 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.
Air Conditioners are given a number which represents how efficient an air conditioner would be if it is kept clean, maintained, and properly installed. This number is called a SEER rating (Season Energy Efficiency Rating). SEER rating determines the efficiency of your air conditioning system. Older air conditioners can be as inefficient as a 6 SEER or worse, and some air conditioners that are only a few years old can be rated at 10 SEER. These units were most likely built before the latest efficiency regulations. New air conditioners have a minimum 14 SEER rating and many are ranked higher.
The right air conditioning unit can enhance the comfort in your home or business dramatically and save you money on your utility bills. We are experts at recommending the right 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, while providing the maximum comfort level possible.
We offer a variety of manufacturer’s products specifically designed for your needs and budget. Often times, manufacturers will offer exceptional incentives on air conditioners and furnace combination packages. Our Comfort Specialists are especially knowledgeable regarding these offers from manufacturers, and we do everything we can to help our customers receive the maximum benefits of both manufacturer and utility company rebates.
Proper installation and charging of the refrigerant is critical. Several major universities have done studies showing that more than 50% of air conditioners have an improper charge. Moreover, 50% of air conditioners are installed incorrectly. Either of these problems will cause an air conditioner to lose efficiency; resulting in you paying more for utility bills and service repairs than necessary.
At Bertie Heating & Air, our professionals ensure proper refrigeration levels when installing or servicing your equipment for maximum comfort and energy efficiency. Our installers are trained by the manufacturer for proper installation of their product line along with weekly in-house training for continued education. Properly charging and installing the HVAC equipment allows the customer to receive the full benefits of that HVAC system.