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Subscribe to our RSS Feed A/C Installation Is a Delicate Process -- 4 Steps That Must Be Considered

Thursday, July 09, 2015

Installing an A/C replacement involves working with electrical components, regulated refrigerants, taking load calculations and more. A/C installation is a step-by-step process, and all steps have to be correct to maximize A/C SEER ratings and comfort. Make sure your HVAC technician follows these steps by the book.

Sizing Is Essential

A/C sizing is contingent upon the cooling load of the home. If the A/C is too large, which is often the case, it wastes energy and doesn't remove adequate humidity from the home. Air conditioners sized too small can't keep up with the cooling demand and fail much sooner than expected due to continuous operation. Your HVAC tech should use HVAC-industry standard Manual J for load calculations.

Ductwork Design

A new cooling system won't improve comfort and lower energy bills if the ductwork isn't up to par. Ducts should be fabricated of approved materials, such as sheet metal or flex ducts. Tight duct sealing is skillfully accomplished with screws, collars, mastic paste and heat-resistant tape.

If you're retrofitting or designing a new home, locate the ducts inside the insulation barrier. Ducts are typically installed in attics, basements and crawl spaces, but these areas can compromise efficiency and comfort by heat gain/loss through duct walls.

Measuring Airflow

Blower output, duct design and living spaces dictate airflow through the supply ducts, rooms and return ducts. If multiple return grilles are installed to balance supply and return airflow, the blower motor will have an easier time doing its job. Dampers may be installed at the trunk and branch joints to fine tune airflow and comfort room to room.

Optimizing Refrigerant

Refrigerant is the magic substance used to extract and move heat out of your home. Optimal refrigerant performance requires free airflow and efficient compression. Your new air conditioner will be pre-charged with refrigerant from the manufacturer, but your HVAC tech should still measure levels. Too much or too little refrigerant stresses components, and you won't benefit with full SEER operation.

Learn more about's A/C installation solutions, or contact us at 855-GET-COMFY to schedule a professional visit to your Chicagoland, southwest Michigan or northwest Indiana home.

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