Sustainable Colorado Architecture

Energy Modeling

Energy Modeling


MANIFOLD is providing Energy Modeling, Passive House and Sustainability Consulting services to a variety of clients throughout Denver and Colorado.  Services include design and calculations required to select wall systems and optimize window layouts, size photovoltaic arrays, select mechanical systems, draw construction details and provide on-site construction coordination.

Below are a few projects for which we have provided consulting:


First full day of installation for Structural Insulated Panels (SIPs).  Panels were shop fabricated and shipped to the site ready to install.  This first wall fits perfectly. 


SIP erection


Specially designed dog doors for use in an air-tight house.  Doors are magnetically sealed to provide an extremely high level of air tightness (but can still be used by cats and small dogs); the house achieved a final blower door test rating of 0.57 ACH50, about 10 times tighter than a standard house.  The dog doors are even more effective when used in sequence as in this ‘air-lock’ arrangement.

air sealed dog door

This 4.8 kW photovoltaic array was installed on one of the first Passive Houses in Denver.  Coupled with efficient appliances and systems, the house will generate as much or more power than it consumes (excess power will be used to ‘fuel’ the owners’ electric cars, see below).

roof mounted solar panels


Electric car charger in garage.  Excess power from the solar panels will charge the car prior to using grid power.

electric car charger


High-efficiency mechanical systems.  This home uses a Conditioning Energy Recovery Ventilator (CERV) to provide fresh air and heating & cooling.  In conjunction with the air-to-water heat pump hot water heater (as well as passive heating via sunlight), the home uses only about 10% of the energy used in a standard code-built home.

CERV and air-to-water heat pump


This net meter regulates the flow of energy between the solar panels, the house and the utility grid.  In the initial summer of operation, the house has generated considerably more electricity than it has consumed; the power company is currently sending checks to the owner for the excess electricity generated.

net PV meter