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RETAC Project

DHP Quick Connect pilot

Active 0517_DHPQu_42
Created 5/2/2017 by Dave Kresta
Updated 1/17/2021 by Geoff Wickes
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Contact and Funding
Lead Org(s): NEEA
Primary: Christopher Dymond
Secondary: Geoff Wickes
Funding: NEEA, BPA
Project Objectives:

Determine viability of DHP quick connect technology to reduce system cost.

Current Project Phase: Completed
Current Project Status: Recommend closing this project out and removing it from list
Project Outcome: Research Questions DISPROVEN
Notes on Project Outcome:
  1. Multiple DIY DHP systems were identified - but only 3 had warrantees that remained valid if installed by someone other than a licensed HVAC contractor
  2. Four DIY systems from two manufactures were field tested. Both provided relatively easy DIY installation of a simple single head DHP. Systems performed well, though not performance tested. Installation manuals were acceptable, but could benefit from improvements
  3. Line sets were robust the fixed length was too long for most applications.
  4. Line set DIY connectors not have any third party quality control or robust product testing. DIY connectors while functional are not adequately validated to be recommended for utility program support. 
  5. Contractor quick connectors that require specialty tools (e.g. Vulcan Lokring) were also investigated, there are many such connectors on the market that typically require specialty tools. While not specifically certified for DHP applications, there is no reason to dissuade HVAC contractor use of such connectors if they choose.
Additional Information

The current DHP product innovations are broken into the

following three phases:

Phase 1 - Identifying current quick connect products

  • More than 8 DHP companies offer a quick connect

option, but only 2 come with warranties.

Phase 2a - Install 4 units into homes

  • Four test units from 2 manufacturers have been

installed in the Portland Metro Area to prove quick

connect connector performance. Initial results look

very promising. Leak tightness testing will continue for

one year with regular check ins to verify performance.

A 75 day leak test was completed with no leaks

detected. NEEA has a report and recommendations for

manufacturer improvements.

Phase 2b – Draft report on connector quality completed in Q4, 2017.  NEEA staff is reviewing.

Phase 3 - Field test by homeowners to ensure similar

connector quality results (pending phase 2 findings)

Attached Files
Interested / Collaborative RETAC Organizations
Project Geography
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Current Project Status History