Duct Work and High Ceilings | HVAC Duct Work Systems 5/5 (1)

Duct Work and High Ceilings

Duct Work and High Ceilings | HVAC Duct Work Systems

Duct Work and High Ceilings – I did not see any reference to my question and would appreciate a response as soon as possible, as due to medical situation, have to make a decision soon. We own an OLD house with 13′ ceilings in a large part of the home and 11″ ceilings in the LV/DR and BR. We are oscillating on where to place the ducts….Floor or ceiling. It appears to be counterproductive to me to put the duct work in the ceiling since it will have so far to go. We are looking for the most cost effective, not upfront cost but operating cost, solution. In addition, we are considering DF heat pumps. The house will need 2 or 3 to be zoned correctly. Please let me know about the duct placement and thank you for your help?

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Variable Air Volume Box with Hot Water Reheat | Commercial HVAC No ratings yet.

Variable Air Volume Box with Hot Water Reheat Variable Air Volume Box with Hot Water Reheat – The variable air volume box or VAV box is a commercial solution to adding multiple zones to large buildings. VAV boxes offer zoning solutions so that separate zoning demands or temperature selections can be maintained in different areas of … Read more…

Hot Water Unit Heater Protecting a Mechanical Room 5/5 (1)

Hot Water Unit Heater Protecting a Mechanical RoomHot Water Unit Heater Protecting a Mechanical Room

Unit heaters are used in various places to protect equipment and provide comfort to occupants. This hot water unit heater provides protection for a mechanical room where there is a large air handler and other associated equipment in the mechanical room. This system is controlled by DDC. A thermostat on the wall detects the temperature of the mechanical room. The DDC system will maintain a temperature set point by energizing the hot water unit heater fan and modulating the hot water valve open on the hot water piping. The actuator and hot water valve can be seen in this photo on the right lower half of the system. The valve is a two position valve so it is either open or closed with no modulating the valve on the unit heater. Other unit heaters for heating mechanical rooms or providing comfort include electric units heater when hot water is unavailable, gas fired unit heaters when gas (either propane or natural gas) is available, and infrared heaters typically found in large garages or warehouses for basic comfort of workers in those spaces. There are also steam unit heaters that utilize steam and a steam coil for heating spaces where steam is available. Most unit heaters are forced air unit

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Air Handling Unit Components 2 | HVAC Forced Air Systems 5/5 (1)

Air Handling Unit Components: Heat

There are many different types and arrangements of heating systems for air handling units and these types of heating systems and arrangements of heating systems vary from commercial to residential. Some air handling units do not have any heat source inside them at all but have remote heat for zoning. The air handling unit provides the air flow and the remote heaters provide heat for zoning. Sometimes the air handling unit is a VAV air handling unit and other times it is just to provide air for a duct heater whether the duct heater is gas fired or electric. For air handling units which some have heating systems inside the five main ways of providing heat for air handling units are:

  • Electric Heat Strips
  • Gas Heat
  • Oil Heat
  • Hot Water Coil Heat
  • Heat Pump (Process of Refrigeration Heating)

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Air Conditioning and Heating Heat/Energy Values – HVAC Technical 5/5 (1)

Air Conditioning and Heating: Heat/Energy ValuesAir Conditioning and Heating Heat/Energy Values

Heat is energy and when we produce heat we need to use energy in its production. There are natural methods for producing heat without burning or using fuels but these methods are not practical or available to the general populace for residential, commercial, and industrial use. The production heat, whether for residential, commercial, or industrial uses, uses energy and energy costs money. It is thereby necessary to have reliable and proven methods of measuring the amount of heat produced using a specific quantity of energy. Employing these reliable and proven methods we can also use the data to determine the best methods of producing heat for homes, businesses, and industry.

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White Rodgers & Honeywell Thermostats | Thermostat Selection No ratings yet.

Thermostat Selection – White Rodgers & Honeywell Thermostats Which type and brand of thermostat do you get when selecting a new thermostat? To do that you have to know what kind of HVAC system you have installed for your heating and cooling system. Do you have a boiler with baseboard heating or radiators with the … Read more…

HVAC Duct Work – Air Handling Unit Duct – Air Handler Duct Work 5/5 (1)

HVAC Duct Work - Air Handling Unit Duct - Air Handler Duct WorkHVAC Ductwork delivers the conditioned air to the spaces. The Air Handling Duct channels this conditioned air to spaces where it is needed and then a return duct channels the air back to the air handling unit duct for re-conditioning. The return ductwork has a negative pressure while the supply ductwork has a positive pressure. In commercial systems and tight residential homes it is necessary to add fresh air to this conditioned air so the air remains fresh and healthy for the occupants of the structure. This is required by the mechanical code and often this air comes through ductwork from the outside.

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Heat Pump Thermostats | HVAC Heating and Cooling 5/5 (2)

Heat Pump Thermostats

Heat Pump Thermostats

To the average person a heat pump thermostat can be a very complicated thermostat compared to the typical thermostat which serves an air conditioning system with gas, electric, or an oil furnace. Of course the heat pump thermostat typically has more wire terminations than the regular thermostat. It has more switches to control emergency heat and some even have lights which will indicate that the auxiliary heat and/or emergency heat is functioning. Most heat pump thermostats are two stage thermostats for the heating mode and a single stage for the cooling mode. These two stages in the HP (heat pump) thermostat for heating gives the thermostat the ability to run two different sources for generating heat (typically only with air to air systems which are more common and prevalent than water to air heat pumps). All thermostat manufacturers offer single and multi-stage heat pump thermostats including Honeywell, White Rogers, Robertshaw, Lux, and Maple Chase.

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What Type of HVAC System Needed for Sun Porch 5/5 (1)

High Performance HVAC Air Conditioning & Heating: Sun Porch and What Type of HVAC System Needed?

The Sun Porch or Florida Room: What Type of HVAC System Needed for Sun Porch

What Type of HVAC System Needed for Sun Porch15) We added a 300 sq.ft. of living space to our home as a sun porch. How do we effectively, efficiently heat/cool this space? We’ve been pitched several options. 1) Use existing with a manual duct damper to the new sun porch. 2) same as above but use a zoned approach w/auto dampers for main house 1st floor and sun porch plus separate thermostats. 3) HVAC with new units for sun porch (e.g., radiate, forced air, etc)

Paramaters.

Sun porch is a 15×20 fully enclosed insulated space with 6 ft. casement windows on three sides. The forth side is the main house wall. Main house is 2 story, 1600 sq ft. per floor, gas heated with 2 Trane furnaces and cooled with 2 Trane central air units. The Trane equipment is new being installed in 2007.

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How to Hook Up a Home Thermostat | HVAC Control 5/5 (2)

How to Hook Up a Home Thermostat

How to Hook Up a Home ThermostatIf you need to install a new tstat then you have found the right place to learn. Below we will describe to you how to hook up a digital thermostat, hook up a programmable thermostat, or hook up any type for that matter. Whether the old thermostat is bad or not if you simply want to replace your old one and hook up a new one the first thing you need to take into consideration is to select the right replacement thermostat. To select the correct replacement you need to know what kind of HVAC equipment you have in your home or where you want to hook up the new thermostat.  There are numerous types of air conditioner and heating combinations so in this article we will cover a basic gas furnace and air conditioner split system HVAC system. For hooking up a new thermostat similar systems to the air conditioner/gas furnace combination would be:

How to Hook Up a Home Thermostat

If you do not know what kind of unit you have take a look at the paperwork from the last time the unit was serviced. Perhaps it will show the type of equipment on the service ticket where the unit had maintenance.  It is assumed that most people will know what kind of unit they have so that they can select the proper thermostat.

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