When it comes to maintaining your home’s efficiency on Cape Cod, understanding performance ratings is crucial for making informed decisions about your property. Let’s dive into the technical aspects that every homeowner in our coastal region should know.
Home Energy Rating System (HERS)
The HERS Index is the industry standard for measuring a home’s energy efficiency. A lower score indicates better performance, with 100 representing a standard new home and 0 being a net-zero energy home. Here on Cape Cod, where we face unique coastal weather challenges, this rating becomes especially significant.
Key Performance Metrics
1. Air Infiltration Rates
– Measured in ACH50 (Air Changes per Hour at 50 pascals)
– Ideal ranges for our climate zone: 3-5 ACH50
– Critical for homes in Dennis and Yarmouth areas
2. Insulation R-Values
– Cape Cod recommended attic R-values: R-49 to R-60
– Wall insulation minimums: R-13 to R-21
– Foundation requirements: R-10 to R-15
Regional Considerations
Properties in South Yarmouth, Barnstable, and Harwich face specific challenges:
– Salt air exposure
– Higher humidity levels
– Seasonal temperature fluctuations
– Maritime climate impacts
Performance Testing Equipment
Professional evaluations utilize:
– Blower door systems
– Infrared thermal imaging
– Duct leakage testers
– Moisture meters
Understanding these technical aspects helps homeowners make better decisions about energy improvements and ensures compliance with local building codes. Regular performance testing can identify issues before they become major problems, especially important in our coastal environment.
Contact our certified professionals today to schedule a comprehensive home performance evaluation and learn how these ratings impact your property’s efficiency and value.