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Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
Trevor Parsons, Housing Vermont
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Trevor Parsons, Housing Vermont

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  • 1. Pleasant Street Apartments Enosburg Falls, Vermont
  • 2. Pleasant Street Existing Conditions • (24) - Units of Family Housing • (6) Detached buildings, slab on grade, late 1980’s construction • Individual heating and hot water systems, propane as primary fuel • 15,000 gallons of propane per year – 625 gallons per unit – $156 Per Unit Month (PUM)
  • 3. Building Envelope • Air seal and insulate attic plane to R-60 • Two part spray foam of “leaky” construction components, overhangs, penetrations, etc. • Continious taped 1” of XPS on walls, R-5 • New R-3 double hung windows. • Care and detail to airsealing
  • 4. Envelope Retrofit
  • 5. Mechanical Systems • Individual heating systems were converted to (3) semi-central mini-district heat. • Primary heat and hot water by Froling wood pellet boilers, supplemented by solar thermal hot water collectors. • A common 200 gallon storage tank buffers the biomass boilers, and augments the solar storage.
  • 6. Mechanical Retrofit
  • 7. Froling Pellet Boiler • Auto Start • Self Cleaning • Built in Controls • Onboard pellet forwarding • And yes… It can make espresso!
  • 8. Additional Mechanical Measures • ECM circulator pumps, uses 65 – 80% less electricity than traditional systems. • Constant mechanical ventilation in each unit, using Panasonic Whisper Greens. • Use of microprocessor controls to regulate loop temperature, warm weather shut down and domestic hot water priority.
  • 9. Project Performance • Air tightness, as tested by blower door, below new construction targets. • Predicted fuel usage to be around 55 tons of wood pellets per year. • At current pellet costs, a Per Unit Month of $46, over a hundred dollar reduction. • A 30% reduction in MMBTU and almost a 70% reduction in Dollars.
  • 10. Project Partners • USDA – Rural Development • VHCB – Vermont Housing and Conservation Board • CVOEO – Weatherization Agency (WAP) • EVT – Efficiency Vermont, EEU • CEDF – Clean Energy Development Fund • In addition to traditional housing sources
  • 11. Questions? Trevor Parsons Housing Vermont

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