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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...
When do you use a VRF Single Port vs Multiport Branch Selector Box? What’s the difference between a VRF single port branch selector box and multiport box? What does the branch selector box do? Which one requires more piping? The decision...
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...
ZoomLock™ Tool Review For those of you that are new to press-fit tools we will cover the features of the Klauke 19 kn tool used on ZoomLock™ fittings, this includes the tool, jaw sets, fittings and accessories required to make...
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...
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
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 VRV System Cost Database

VRF System Cost

VRF System CostWe know that VRF system cost varies based on many factors which must be considered when budgeting or bidding on a commercial HVAC project. Of course, it’s not the best option to provide a GMP (Guaranteed Maximum...
What is VRF Air Conditioning

What is VRF

What is VRF VRV Variable Refrigerant Volume systems were invented in Japan in 1982 by Daikin and brought to the United States in 2004. These systems are used worldwide. Daikin VRV (Variable Refrigerant Volume) is their trademarked name, that’s why...
VRF Piping Connection Methods Zoomlock LokRing Refnet

VRF Piping Connections

VRF Piping Connections There are several methods for joining refrigerant piping to VRF System components and fittings. The following mechanical VRF Piping connections can save labor but will cost extra in material. ZoomLock™ by Parker This is a mechanical joint that can...
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