Zoned HVAC With 1 System

Al’s Plumbing, Heating & A/C, in Plano, Texas supplies full service plumbing upkeep, repairs and replacements for each plumbing element in your home.  Al’s sells and installs Rheem Professional Collection fuel & electric water heaters, and tankless water heaters.  Al’s Plumbing, Heating & A/C is close to your own home in Plano, Allen, and Frisco.  We service all houses in southern Collin and Denton Counties with no further travel charge.

Al’s also supplies maintenance & repairs for all manufacturers of Central A/C, Fuel & Electric Furnace, and Warmth Pumps.  Additionally, we promote and set up new HVAC Techniques from American Commonplace (similar firm as Trane), Ameristar (similar firm as American Commonplace) and Coleman HVAC (similar firm as York HVAC).

Name Al’s at this time to debate any considerations or problems you’ve gotten together with your HVAC System or Plumbing.  We’ll organize an appointment at your convenience and supply 24/7 Emergency Service.

photo of a new home

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Two Story Houses Are All the time Warmer Upstairs Than On The Ground Degree

This text is about Zoned HVAC Cooling & Heating.  Zoning permits totally different areas of the home to be totally different temperatures. It allows areas which might be seldom used to have little or no cooling / heating, whereas other areas are cooled / heated more of the time.

Zoned HVAC also allows totally different areas within the house to be totally different temperatures at totally different occasions of the day.  Typically during summer time, bedrooms are allowed to be warmer through the day, and Daytime Dwelling Areas to be hotter overnight.

  • With Zoned HVAC Sometimes There Are 2 Or Extra Separate HVAC Techniques.
  • In DFW, houses as much as 2,000 sq. ft need solely 1 HVAC System.
  • This Article Is About Using ZONE DAMPERS to get the Comfort Benefits & Power Financial savings Of Zoned HVAC — With 1 HVAC System.

Image Source: DreamsTime

Click Here To See Two-Zone HVAC Using Two Separate HVAC Methods: Two-Zone HVAC With Two HVAC Methods

Click on Right here To See Two-Zone HVAC Using One HVAC System: Two-Zones With One HVAC System

In a one HVAC System residence, Zoning is completed with Electrically Operated Dampers.  Each damper(s) has its personal thermostat that operates only these damper(s).   This will present as a lot flexibility as the house owner would really like when controlling the temperature in several zones of the home.  For instance, throughout summer time, the bedrooms might be allowed to be warmer in the course of the day, and daytime dwelling area is cooler.  At night time, the bedrooms turn out to be cooler while the daytime dwelling area is hotter.

Zone Dampers Are Notably Worthwhile In 2-Story Houses. The upper story will all the time be warmer than the primary flooring as a result of warmth rises.  Moreover, in summer time, the sun is shining on the roof and the attic get extremely popular (attic temps can reach 160+ degrees during DFW summer time).  A number of the warmth in the attic forces itself into the rooms, making them a lot warmer than the first flooring rooms (that have air conditioned rooms above them).

Click Here To See A Thermal-Image Photograph Displaying Attic Temperature: Thermal Image Photograph Exhibits Attic At 170 Levels!

Zoned HVAC permits the home-owner to have as a lot as individual room temperature control.  This presents super comfort benefits.  Throughout DFW summer time, west dealing with rooms shall be notably warmer than east dealing with.  Throughout winter, north dealing with rooms shall be notably cooler than south dealing with rooms in the course of the day.  Zoned HVAC allows more cooling or heating to be provided to the rooms which might be turning into warmer because of the sun.

With comfort being a significant factor in the choice to put in Zone HVAC, the dampers may also pay for themselves over time.  Zone dampers scale back how a lot the HVAC System must run, lower cooling & heating bills and increasing the lifespan of the HVAC System..

Proven: Electrically Operated Zone-Damper

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Zone Dampers are installed within the ductwork (sometimes within the attic of a DFW residence).  They are put in at the similar time a the HVAC System is put in.  If the prevailing system is a Variable Velocity HVAC System, zone dampers could be added to the prevailing system.

Click Right here To See An Instance Of A Retrofit Zoned Damper System Installed In An Present Residence: Zoned Dampers Added To Present House

electric furnace

Image Supply: CanStockPhoto

Single-Velocity / Single-Stage HVAC Methods Run Solely At 100% Capacity.  They Can’t Run Quicker Or Slower.

Nearly all of HVAC Methods are Single-Velocity.  All manufacturers of HVAC additionally supply Variable-Velocity Methods. Variable-Velocity Techniques are costlier to buy, however inexpensive to operate because they operate solely at the velocity needed for the present cooling / heating demand at any given time.  If it’s 80 degrees outside, the System will operate extra slowly (and makes use of less electricity) than when its 105 degrees.  Like a automotive, Variable-Velocity HVAC uses less electricity when operating a less than full velocity.

Installing dampers inside present ductwork is the most typical method so as to add zones to an present system.  Nevertheless, with a Single-Stage / Velocity  blower (& outside A/C unit) it might solely operate at 100% capability.   For Example:  You could have a two story house and need to cool only the upstairs at night time.  The Zone Damper(s) flip off airflow to the primary flooring. This causes strain to build up contained in the ductwork.  This causes the HVAC System to operate much in another way than it was designed & installed to.

Click Under To Learn An Article About Problems With Single Velocity HVAC Techniques & Zone Dampers:

Zone Dampers & Single Velocity HVAC Techniques

Adding a By-Cross Damper permits excess air circulate (resulting from some duct(s) being closed) back into the Return-Air ductwork.  This eliminates the strain construct up inside the ductwork, but causes further issues.

Issues Prompted By A By-Cross Damper:

  • Throughout Cooling Season, the By-Move Damper adds lately cooled air again into the return air ductwork.  This causes the A/C Cooling-Coil (contained in the furnace or ductwork & can’t be seen) to turn into too chilly.  The colder the Cooling-Coil becomes, the much less efficiently the A/C operates.  Plus, over time, the Cooling-Coil can freeze.  This coil is what removes humidity from the air.  So, if the coil becomes too cold, the humidity freezes inside the coil as an alternative of draining away.
  • One other drawback can be too much humidity inside the house throughout summer time.  Because the air is passing via the Cooling-Coil too fast (because of dampers being closed) — the Cooling-Coil does not have satisfactory time to take away the humidity.  The HVAC System & Cooling-Coil have been designed & put in to have all air vents open and supplying air to all rooms all the time.

Click Right here To See A Frozen Cooling-Coil Inside A Furnace: Frozen A/C Coil inside furnace

If the System is allowed to run with a frozen indoor Cooling-Coil for a protracted time period, it can injury the outside unit.  This example may cause the outside unit to freeze too.

frozen outside air conditioner unit

Picture Source: ShutterStock

SHOWN: Frozen Central A/C Outdoors Unit

  • Throughout Heating Season, a by-pass damper causes the furnace to run too scorching.  The burners are making enough warmth to warm the complete house, however only portions of the house are receiving heat.  Air being is being returned to the furnace (by means of the by-pass damper) at a much hotter temperature than the furnace was designed to obtain.
  • To accommodate air that’s too cool or too scorching, the HVAC System “short cycles”.  This means it runs for shorter durations of time.  Brief cycling begins & stops the HVAC System rather more regularly than it was designed for.  This leads to shortened HVAC System life, and makes for an uncomfortable house as a result of the air coming from the ducts is just too scorching or cold to really feel snug.

Think about while driving your automotive in the event you stopped at each intersection.  Your automotive’s brakes would put on out a lot quicker than in the event you drove the automotive the best way it was designed to be driven.  This is what short-cycling does to an HVAC System.

central air conditioner outside unit

Image Supply: DreamsTime

Variable-Velocity HVAC Methods Run Slower Or Quicker Based mostly On Cooling or Heating Demand

Zone Dampers are to be put in with a Variable-Velocity HVAC System.  This implies both the furnace blower and the surface unit can slow down / velocity up based mostly on present cooling / heating demand.

When operating with Zone Dampers closed, the system will sluggish the airflow + the quantity of cooling the surface A/C is supplying.  When zone(s) are closed.  A Variable Velocity HVAC System will ship only the amount of airflow required to cool / warmth the spaces the Zone Dampers are sending air into.  This reduces the quantity of electrical energy the air conditioner makes use of.

Click Under To See American Commonplace’s (similar company as Trane) HVAC Methods Product Line:

American Normal HVAC Techniques — (Then Click On Air Conditioners)

The first methods you see are Variable Velocity Techniques (Accurate Comfort Platinum 18 or 20 SEER A/C Models).  After that the only velocity techniques are shown.   An identical Furnace is required.  This enables the blower fan motor to hurry up / slow down depending on the quantity of airflow required at any given time.

Zone Damper(s) every have their own thermostat.  This thermostat operates only the zone damper(s) it’s related to.  Multiple Zone Damper(s) may be put in on one HVAC System, each with their own devoted thermostat.  When the thermostat requires cooling / heating — the damper opens.  As soon as the temperature reaches the thermostat’s setting, the Zone Damper closes again.  This enables the proprietor to keep every zone at exactly the temperature they want 24 hours a day.

All this can be automated with a Sensible Thermostat or Automated SetBack Thermostat.  Once programmed, each zone is cooled / heated based mostly on the thermostat’s programmed setting.

nest thermostat in heating mode

The Nest Thermostat Is One Of The Most Well-liked Sensible Thermostats

Click on Right here To Study Extra About The Nest Thermostat: Advantages Of The Nest Thermostat

Click on Under To See Totally different Cooling / Heating Zones In 1 House With 1 Variable-Velocity HVAC System & Dampers:

House With A number of Cooling / Heating Zones


Al’s Plumbing, Heating & A/C, in Plano, Texas offers full service plumbing maintenance, repairs and replacements for each plumbing element in your house. Al’s sells and installs Rheem Professional Collection fuel & electric water heaters, and tankless water heaters.  Al’s Plumbing, Heating & A/C is close to your own home in Wylie, Murphy, and Rowlette, TX.  We service all houses in southern Collin and Denton Counties with no further journey charge.

Al’s additionally supplies upkeep & repairs for all brands of Central A/C, Fuel & Electric Furnace, and Warmth Pumps.  Moreover, we promote and install new HVAC Methods from American Normal (similar company as Trane), Ameristar (similar company as American Normal) and Coleman HVAC (similar firm as York HVAC).

Call Al’s at this time to debate any considerations or problems you have got together with your HVAC System or Plumbing.  We’ll organize an appointment at your convenience and supply 24/7 Emergency Service.