According to the U.S Department of Energy, half of all heating, ventilation and air conditioning (HVAC) systems fail to run at peak efficiency because of improper installation. Heating and cooling systems work best when installed by trained HVAC professionals.Incorrect heating and air conditioner installation can mean higher costs for electricity and other utilities. When installed incorrectly, a heating and cooling system must run more often to compensate for its inefficiency, placing extra strain on system parts and decreasing the system’s durability.Home Heating SalesA home heating sales representative can't provide an effective heating system estimate without first visiting your home. Some home heating sales are based on how many cubic feet you need to heat, but other details factor into the cost.Besides square footage, home heating sales staff will consider the quality of your insulation, accessibility of existing ductwork and the number of windows, as well as the directions they face.Remember that bigger isn't necessarily better when installing heating and cooling systems. An overly-large system will stop and start frequently, increasing energy costs. Large systems may not provide proper humidity control, as systems reach desired temperatures and turn off too quickly.Air Conditioner InstallationAir conditioner installation requires the same careful appraisal of a house’s requirements as home heating sales. The structure of a home affects air conditioner installation and load. For instance, high ceilings increase the amount of air that will have to be cooled.If your home has an older cooling system, your may be tempted to replace the external condenser or heat pump, while retaining the original ductwork and coils. Unfortunately, an air conditioning system works as a single unit. Mixing parts from two different systems reduces cooling efficiency and can shorten the mismatched systems’ lifespan.Heating and Cooling DuctworkThe Department of Energy estimates that most heating and cooling systems lose up to 15 percent of their energy to leaky ductwork. To prevent this, an installer should check existing ducts for leaks and verify that new ductwork doesn't have any kinks or defects before installing new heating and cooling systems.Proper insulation of ducts should be part of any heating or central air conditioner installation. The installer should also ensure that all ductwork is properly sealed. A professional heating and cooling installer may offer third-party verification that all ductwork and equipment is properly installed.Need More Help?If you need professional help with your project, LendingTree Home Pros can help.The good news is that LendingTree Home Pros maintains a directory of home service professionals and can match you with a home pro in your area. All the home pros listed in the LendingTree Home Pros directory are properly licensed and insured and are backed by a $10,000 money-back guarantee!Let LendingTree Home Pros help you find a pro today!