Most homes don’t get the same amount of sun or shade all day, so why would you expect to need the same type of cooling or heating all day?
A lot of times, there are rooms in your house that are always warmer or colder than others are. There can be many explanations for this. For one, heat rises, so rooms on second or third floors are often too warm. In turn, basement rooms are typically too cold. Rooms with vaulted ceilings have a difficult time retaining heat, while rooms that receive long hours of sunlight are often difficult to cool down. These are just a few reasons, but regardless of why a room’s temperature is uncomfortable, there’s only one surefire way to even out your house’s temperature: system zoning.
First of all, let’s be precise in our language and clear up exactly what we’re talking about.
The word zoning is used in more than one way in the context of heating and air conditioning systems in a house. First, larger houses are always zoned. That is, they have more than one thermostat so you can control the conditions separately in different parts of the house. If you have a two-story house, for example, you probably have at least two thermostats — one upstairs and one downstairs.
The other way that the term ‘zoning’ is used is to describe a single duct system attached to a single HVAC system that serves multiple zones. In most homes, each thermostat is connected to its own heating and cooling system. The home is zoned, but the HVAC system is not. In a ‘zoned system,’ a single heating and air conditioning system is controlled by multiple thermostats in multiple zones.
System zoning is pretty simple. It involves multiple thermostats that are wired to a control panel, which operates dampers within the ductwork of your forced-air system. The thermostats constantly read the temperature of their specific zone, then open or close the dampers within the ductwork according to the thermostat’s settings. Bypass ducts are sometimes used in a duct system. The bypass duct—in theory—is supposed to relieve the extra pressure and maintain good air flow throughout the duct system.
Bypass ducts within the duct system should only be used as a last resort and zoned systems should only be installed by qualified and factory trained technicians. The bottom line is that zoned duct systems are tricky. It is not that zoned systems can’t work; it’s that they’re done wrong so often.
Air Care Systems, Inc. performs Manual J load calculations to determine appropriate BTU capacity for heat loss/gain within the structure and Manual D calculations when designing and fabricating new duct systems; always designing your system to meet your comfort, energy and financial needs.
Air conditioning and heating manufacturers offer many product solutions to meet a home’s need for zoning as well. Daikin Variable Refrigerant Volume systems and Mitsubishi Heating and Cooling Variable Refrigerant Flow Systems offer ducted and ductless whole house solutions using inverter compressor, variable speed technology.
Not interested in ductless solutions, ask us about inverter compressor systems available with zoning technology,— iQ Drive from Maytag.
See how Air Care Systems, Inc. can make you smile today— Schedule a FREE Consultation online or call one of our N.A.T.E. Certified Comfort Consultants at 321-385-3950. Serving Central Florida and select surrounding areas.