Window air conditioning units are the most affordable upfront and to operate, but they only cool one room at a time. Heat pumps are usually more expensive to install than central air conditioning, but they are much more energy efficient, making them more cost-effective in the long run. If the air conditioning unit is located in a historic home, in a small attic or in a blow-insulated attic, or if the HVAC unit requires custom-made parts, it will add to the price of the installation. Homeowners can take certain steps to maintain their new HVAC unit after it has been installed by a professional.
These include replacing air filters regularly; sealing any air leaks in the ducts; cleaning up any debris surrounding the HVAC unit; maintaining a free space of 2 feet around the unit; replacing or adjusting the thermostat; and cleaning the evaporator coil, evaporator trap, and drain pipe with a garden hose. The versatility of an air conditioning system means that you can build an air conditioning system that is tailored to your space. Some HVAC companies offer discounts on more expensive options, such as a zoned system, and many local energy companies offer discounts or rebates for upgrading or replacing an HVAC system, especially if it's an energy-saving option. If the cost of repairing the HVAC unit is 30 percent or more of the total cost of replacing it, homeowners should opt for replacement.
Most HVAC contractors don't insulate, but you can contact your local HVAC company for more information. Almost any major construction in a house, including the installation of an air conditioning system, requires a local permit. You can extend the life of your system by keeping up with standard HVAC maintenance, such as changing filters regularly, monitoring your energy bills and calling an HVAC professional at the first sign of problems. Most heating, ventilation and air conditioning system replacements will require new ductwork, so homeowners should check with their HVAC professional if they need to be replaced.