As of 2014, a building owner can expect to pay between $5,000 and $11,000 to replace the residential HVAC system. The cost of replacing an HVAC system varies greatly. The type of system, installation costs and any necessary changes or modifications to the structure can dramatically affect the cost of replacing the HVAC system.Know More
Picking a brand of HVAC system to replace an old system will affect the cost of the replacement. Lesser-known brands may be cheaper, but the quality of the system may be questionable. Careful research of available systems and brand reputation may assist in determining the appropriate system for the building.
For installation, contractors' rates may differ, so it is best to get quotes from multiple contractors prior to making a decision. The building owner may be expected to pay for necessary repairs or modifications to the existing system in addition to the cost of installation.
Accurate measurements of the building will help to ensure the proper selection of replacement system. The building owner must also provide as much information as possible about the existing system. This will allow both contractors and retailers to assist the owner in making an informed selection for a replacement HVAC system.Learn More
The formula used to determine the amount of CFM, or cubic feet per minute, a room needs for heating begins by multiplying the room's volume by the number of times the heated air gets changed hourly. Then divide the resulting number by 60 to produce the amount of CFM required.Full Answer >
To replace a thermostat, switch off the power to the thermostat, and unscrew the old thermostat from the wall. Fasten the new thermostat, and switch on the power to test it. You need a screwdriver, a utility knife and a new thermostat to accomplish this task.Full Answer >
The formula for calculating BTU loss or gain in converting CFM to BTU is temperature difference times actual CFM leakage times 1.08 equals BTU loss or gain. CFM is the actual cubic feet of air volume per minute pushed through the HVAC unit. BTU is the British thermal unit of heat removed from the room by the HVAC unit.Full Answer >
To replace a gable vent, unfasten the existing vent and pull it out, replace the flashing, caulk the new vent, insert it, and fasten it with screws and nails. This one-day process requires a ladder, a hammer, a screwdriver, building paper, metal flashing, caulk, a stapler and a drill.Full Answer >