Wilkes-Barre, PA

limekilnThis all-electric, wood framed construction, 200-unit family development built in one of Pennsylvania's coldest climates in 1979 used expensive electric resistance heating and leaky through-wall air conditioners. Innova discovered that many of the bath exhausts had become disconnected over the years and were pumping moist air into the poorly ventilated roof cavity, causing mold growth and premature rotting of the buildings' wood assemblies. The development was an uncomfortable and expensive place to live, with poor indoor air quality and deteriorated siding and structural elements. Innova installed high-efficiency heat pumps in place of the electric resistance heating and installed new Energy Star® bath fans and vent connections. We also developed a method to improve the moisture management and thermal properties of the aging building enclosure. The result was a stabilized building structure incorporating a long-term water management system, improved indoor air quality and significantly lower HVAC operating costs.


Lansdale, PA

academyThis complex of ten, two-story buildings containing 48 apartments was built in 1933. The original oil-fired heating and hot water boilers had been replaced since the site's construction, but continually rising fuel oil prices and the systems' generally poor operating efficiency made their continued operation untenably expensive. In addition, the Innova audit team found that a peaked roof assembly, added to the buildings' original at roofs in the 1980s, had created a secondary cavity above the living spaces which acted as a thermal bridge to the un-insulated attic, thereby accelerating heat loss through the building's thermal control layer. Innova produced a scope of work that included replacement of the existing oil-fired boilers with an array of condensing natural-gas-fired units. The secondary roof cavity was thermally-decoupled from the exterior to create an effective thermal control layer in the roof assembly. These measures, coupled with lighting and boiler pump efficiency retrofit resulted in the reduction of annual energy usage by 46%.