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VRF Variable Refrigerant Flow

Active vs Passive Refrigerant Recovery The active removal of refrigerant from a system using Refrigerant Recovery Machines makes the process much easier than using passive methods. The removal of refrigerant from a system that is being repaired or replaced is...
ZoomLock vs Brazed Fittings. Which piping joint method is best for your project? There are several things to consider. What materials are the structure constructed of, and what is the occupancy of the building? If it is a wood structure then...
VRF Cost per Ton and cost per ft2

VRF Cost per Ton

VRF Cost per Ton or Cost per Ft2 to Install? How do you determine the cost per ton or cost per square foot for the installation of a VRF system? What factors play a role in the VRF cost per ton...
VRF Piping Hangers and Expansion Loops When hanging or fastening VRF copper refrigerant piping that involves long runs, then some form of considerations needs to be made for expansion due to temperature differences. If no allowances are made for expansion in...
VRF System Control Wiring This VRF System control wiring is for a VRF VRV Heat Recovery System with single port branch selector boxes. The control wiring is very simple, it’s basically two 18 gauge wires that go from the thermostat...
  Refrigerant piping insulation has historically escaped the scrutiny that it has found itself under recently in some jurisdictions. What could possibly be such a big deal with plain old boring refrigerant piping insulation? With energy codes getting stricter during...
Project: Smouse Opportunity School Building Type: School Location: Des Moines, Iowa VRF System: LG Equipment: • Multi V Water IV Heat Recovery • High Static Ducted Units • 4- Way Ceiling Cassette • Cased and Uncased Vertical Console Units • BACNet Gateway • Remote Temperature Sensor https://youtu.be/_Hk0jQVGsxU
If you are looking for Mechanical Construction Estimating Software, the choices are many. I have personally been involved in overseeing an estimating group of 20 plus estimators and can tell you there was no way we could have bid the...
VRF Installation Cost Budgeting

Estimate VRF Projects

How to Estimate VRF Projects HVAC Estimating is the foundation upon which all construction company profits are built. If you don’t get the estimates correct, your company won’t be in business very long. If you don’t understand your cost and...
VRF Manufacture Comparison, Daikin, Mitsubishi, LG, Toshiba, Carrier, Trane, Fujitsu, Panasonic, Hitachi

VRF Manufacture Comparison

VRF Manufacture Comparison With so many VRF manufactures to compare, it’s hard to decipher all the variations between systems. Below you'll find a comparison of VRF manufactures such as, Daikin, Mitsubishi, LG, Carrier, Toshiba (Carrier), Fujitsu, Panasonic, Hitachi (York) and...
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