by High Performance HVAC | Technical Reference |
Boiler Piping Flow Pipe Sizing - Copper and Steel Pipe Flow Rates and Characteristics of Piping in Hot Water Boiler Loops
Hot water boiler pipe sizing is important and based on many factors including BTU and Delta (Δ) T Calculations.
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by High Performance HVAC | Boilers |
Boiler Combustion Efficiency | HVAC Heating Systems - It is important to understand that a commercial application (can also apply to residential boiler applications) is going to consume a large amount of the energy budget, therefore it is important to track efficiency ratings because a slight drop in the efficiency can cause a sharp increase in the energy costs.
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by High Performance HVAC | Boilers |

Heat Exchanger & Domestic Hot Water Storage Tank
Heat Exchanger & Domestic Hot Water Storage Tank - In the front is a commercial heat exchanger. Behind the commercial heat exchanger is a domestic hot water storage tank.
The entire system is monitored by direct digital controllers to control the water temperature, the boilers, the valve actuators, and the heat exchangers. It is important to monitor the temperature of any domestic water system. Temperatures above 130° F. should be avoided as they will scald people. This can result in legal issues so it is important this is controlled accurately. Direct Digital Control can offers alarms for this issue in case something goes wrong or something fails.
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by High Performance HVAC | Boilers |
Boiler Troubleshooting Problems for Hydronic Heating Systems - Troubleshooting boiler problems will depend on what the problem is with the boiler. The scope of this article will cover the basic boiler problems that can occur with a boiler. Advice for troubleshooting the basic problems with the boiler. Many of these problems will require the attention of a professional boiler technician. Boiler technicians are available at either your local plumbing contractor or HVAC contractor. (more…)
by High Performance HVAC | Boilers |
Boiler Supply and Return Piping - Any heating pipe system will experience a heat loss in the pipe even when the pipe is insulated. The loss is far greater when the pipe is uninsulated. Good boiler piping insulation will reduce the heat loss experienced in the pipe run throughout the loop especially where the pipe runs in unconditioned or unheated spaces where heating is not necessary.
Boiler Supply and Return Piping
Good Supply and Return Insulated Pipe will increase the efficiency of the boiler and reduce overall the heat loss of the entire system as a whole throughout the heating season. Insulate exposed piping wherever you find it and replace old insulation that is falling off. Be careful to identify the correct insulation and never ever disturb asbestos insulation. Asbestos is dangerous especially if you breathe in the particles from it. A professional asbestos remediation company must be hired to remove it safely.
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by High Performance HVAC | Gas Furnaces |
Steps to Light a Pilot Light
- Determine That You Actually Have a Standing Pilot Gas System
- Check to Make Sure You Have Fuel
- Understand the Valve Function
- Light the Pilot Light
- Enjoy the Warmth

How To Light a Pilot Light – Standing pilot gas furnaces and water heaters are still around today even in newer homes. All the major hardware stores and HVAC dealers carry standing pilot appliances. Although a new standing pilot gas furnace or boiler is rare finds these days. Because of the move to higher efficiency models and the wide use of electronic ignition technology which improves efficiency.
Before you proceed you’ll want to determine if you actually have a standing pilot system in your HVAC furnace, boiler, or water heater.
In many cases, on many appliances, there are basic instructions on lighting it, in fact, you do have a standing pilot system. Check around the main panel or look at the gas valve itself. Sometimes, especially on older appliances, there are no instructions on it if the pilot light goes out on a standing pilot gas furnace, boiler, or water heater.
The label or sticker on the furnace, boiler, or water heater faded a long time ago and you will need to follow the instructions in this article. (more…)