Punta Gorda Energy Solutions | HVAC Load Calculations

Punta Gorda, Why Should You Insist on a Proper Residential Manual D HVAC Duct Design?

Like everything, there is a right way and a wrong way.  Many contractors use improper duct sizing techniques because they want to save materials, time and labor.  Their shortcuts result in a spider web of duct work of varying sizes and lengths.  Supply registers deliver inconsistent comfort and the returns are often undersized.  Do you really believe all your rooms are receiving the required CFMs consistently?

If the ductwork is not installed properly you cannot expect your comfort system to be effective.  Your system may be properly sized using ACCA certified Manual J load calculation results, and you may have selected a great HVAC unit, but your poor residential duct design will result in HVAC ducts that don't deliver the required airflow to each room.  Or sometimes contractors will add an addition onto an existing system and the new heating and cooling system is too small to cover both the existing space and the new addition.

Some things to look for in a good home HVAC duct design are:

• Supply trunks that are equal distances apart (spread out evenly along the supply plenum).  This provides even heating and cooling distribution and ensures each room maintains about the same temperature.
• Correct number of registers, correct diameter of supply trunk.  Too many supply ducts and the CFMs will be too low delivering too little comfort to each room.  Too few supply ducts and the CFMs will be too high delivering too much comfort to each room.  Improper duct sizes will distort the flow to each room.  For example, if a bedroom has too small a supply branch while the bath's is too large, the bedroom will hardly get any air while the bath will get far too much.

Improperly sized return trucks:

• Coil could freeze up if undersized
• Compressor is forced to overwork
• House will take much longer to achieve the desired comfort level

When your Punta Gorda, Florida home duct system is properly designed, air will distribute evenly throughout your home.  Each duct will carry the proper amounts of CFMs.

Save money, time and aggravation.  Invest us, your HVAC Load Calculation Pros, to properly calculate and size your HVAC unit to enjoy years of comfort.