Air Handler Equipment DDC Controllers – These controllers will control an air handler once the wiring is completed. The panel is freshly mounted and waiting for the technician to run the piping and pull the wire from the control points. Other points, such as outside air, temperature sensors in piping or ductwork, flow meters, actuators, or other control points can be terminated to these controllers and the data collected from those input points can be networked over the entire building automation system through the communication trunks. (more…)
Condensing Unit Frozen Wont Turn Off - What you can expect to learn from Condensing Unit Frozen won’t Turn Off article: this article is an answer to a question taken from our email by a visitor to High Performance HVAC. We often use the questions we get in the email as a guide to writing articles. The topic is a condensing unit that will not turn off, and it is freezing up. From my experience in the field and using my HVAC knowledge, I offer the readers a list of what could cause this problem. We hope it helps you. What’s the possible problem with a frozen air conditioner condenser that won’t turn off except with the breaker? (more…)
Air Conditioner Ductwork Leaks | Leaky Duct Work - A good consideration when replacing the air conditioning system is the ductwork.
Red Arrow Shows a Duct Work Leak
Ductwork seems to be the most ignored part of an HVAC system. However, it is a very important consideration in this age of new technology and higher energy-efficient equipment being developed and manufactured. You can have the most energy-efficient engine but if it’s in an old 60 or 70’s model car your efficiency is going to suffer. The same is true with HVAC systems. (more…)
Air Handler Components 3 - Hot water coils inside of air handler units combine a boiler system or a special capacity hot water heater and forced air to provide forced-air heating. The concept is simple and used a lot in commercial and some in residential.
Commercial systems almost exclusively use a boiler to provide hot water to the hot water coil inside the air handler unit while the residential systems use mainly special capacity hot water heaters to provide hot water to the hot water coil inside the air handler unit.
On a call for heat, a pump is energized to begin the circulation of hot water from the heating source to the coil. The air handler unit blower motor energizes and the air begins to move across the coil. Heat is exchanged from the hot water coil to the air and the air is delivered to its appropriate destination through the ductwork.
Pricing New Air Conditioner - We get emails on a regular basis asking us about prices. Prices for a new air conditioner, heat pump system, boilers, and other types of HVAC systems. This article addresses those questions and why it is nearly impossible to give anyone an estimate.
Estimates for new systems are nearly impossible through email or forum. Someone needs to first look at the house and other factors involved with giving someone a price. (more…)
Air Conditioner Condensation Problems - It is important for air conditioning preventive maintenance to be performed on your system to avoid problems. Condensation water leaking near the air handling unit can be avoided with proper air conditioning repair and preventive maintenance. Normally this is a very simple problem that can be fixed in less than 30 minutes. Here is a list of what can cause water around the outside of the air conditioning air handler unit. (more…)
This is a brand new installation and the ductwork was leaking. Older ductwork definitely leaks and can cause a dusty environment
Trane Air Handler Making Dust | HVAC Troubleshooting - I would appreciate someone in the Trane organization that would please tell me why since installment and still 5 years later my house is nothing but a dust pit. I am not exaggerating. You can wipe dust blankets DAILY off my walls, floors, furniture. I have been, since the installation, asking someone to help me.
My original installer put a filtering system “like used in coal mines” - did not help. I have had independent HVAC inspectors who cannot understand nor have any reasoning for the dust. One thing was that the original TRANE installer did not put sufficient air return duct in my house.
CAN SOMEONE HELP OR AT LEAST GIVE ME AN ADDRESS/TELEPHONE NUMBER WHERE I CAN CONTACT THE MAKER/OWNER OF TRANE?
HVAC Inspections Commissioning - How often have you heard someone complain about inspectors or code officials whose job it is to inspect mechanical, electrical, plumbing, and other trades work for safety and quality workmanship?
One could argue that workmanship or even design can be horrible even if the work passes a code inspection. However, chances are if the trades have any integrity they want the job to look good whether it is for the inspector or whether it is for pride and quality of work. (more…)
Magnehelic Duct Pressure Sensor - The Magnehelic measures duct pressure inside of ductwork. It is important, for many reasons, to know the pressure inside of ductwork. This Magnehelic measures the supply side pressure of the blower inside the air handler. (more…)
Bad Ductwork - Ductwork is necessary to deliver the air throughout the HVAC system. It is important that the system has integrity with no leaks. Ductwork is made of different materials. Duct systems also have different construction methods which hold the ductwork together.
Pictured above is an old ductwork system (which needs to be replaced) made of duct board, which is a rigid fiberglass board, metal, and flex ductwork. The duct board is cut to size from the ductwork sizing requirements for the tonnage and taped together with special duct tape. For the branches coming off the duct board trunk, metal collars are inserted into holes cut to size in the duct board. Flex ductwork is attached to the metal collars for the branch ductwork. (more…)
HVAC Tip - A thermocouple is commonly used in standing pilot gas furnaces and water heaters are technically referred to as a copple element and produces millivolts when heat is applied to the tip. This millivoltage is necessary to keep the pilot valve inside the gas valve open. If the pilot flame goes out, the thermocouple stops generating millivolts. Without the millivolts, the valve closes thus preventing gas from escaping when there is no flame. Thermocouples fail because of oxidation. It is recommended that you keep the pilot lit throughout the year to prevent excess oxidation. The thermocouple can be found in many different types of gas furnaces, gas logs, and gas water heaters. Learn How to Test a Thermocouple with a Multi-Meter
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Air Handler Equipment DDC Controllers – These controllers will control an air handler once the wiring is completed. The panel is freshly mounted and waiting for the technician to run the piping and pull the wire from the control points. Other points, such as outside air, temperature sensors in piping or ductwork, flow meters, actuators, or other control points can be terminated to these controllers and the data collected from those input points can be networked over the entire building automation system through the communication trunks. (more…)
Air Handler Components 3 - Hot water coils inside of air handler units combine a boiler system or a special capacity 
Air Conditioner Condensation Problems - It is important for 
HVAC Inspections Commissioning - How often have you heard someone complain about inspectors or code officials whose job it is to inspect mechanical, electrical, plumbing, and other trades work for safety and quality workmanship?
Magnehelic Duct Pressure Sensor - The Magnehelic measures duct pressure inside of 
Bad Ductwork - Ductwork is necessary to deliver the air throughout the HVAC system. It is important that the system has integrity with no leaks. Ductwork is made of different materials. Duct systems also have different construction methods which hold the ductwork together.