EC-1 Form: New Hampshire Residential Energy Code Application

Under Owner/Owner Builder, enter the Company Name (if applicable), Name, Mail Address, Town/City, State, Zip, Phone, Cell and E-Mail.

Under General Contractor, enter the Company Name, Name, Mail Address, Town/City, State, Zip, Phone, Cell and E-Mail.

Under Location of Proposed Structure, enter the Tax Map #, Lot #, Street, Town/City and County.

Under Type of Construction, check Residential, Small Commercial, New Building, Renovation, Addition, Thermally Isolated Sunroom or Modular Home. For a Modular Home, the site contractor must submit this form detailing supplementary rooms and Floor and/or Basement insulation unless the floor insulation is installed or provided by the manufacturer and no heated space is added.

Check Zone 5 for Cheshire, Hillsborough, Rockingham Strafford, or Zone 6 for All other NH counties and town of Durham.

Write the Total New Conditioned Floor Area in ft2.

A conditioned space is one being heated/cooled, containing uninsulated ducts or w/ a fixed opening into conditioned space.

For the Basement or Crawl Space, check Conditioned? Yes (Walls must be insulated) or No, then check Full Basement, Walk Out Basement, Slab on Grade or Other.

Structure is EXEMPT because: check Mobile Home or On an historic register.

Form Submitted by: check Owner, Builder or Other.

By signing, you certify that all the information contained in this application is true and correct, and construction shall comply in all respects with the terms and specifications of the approval given by the local municipal code official or New Hampshire Department of Energy.

Sign on the Signature line, then enter the Print Name and Date.

Complete the “Your Proposed Structure” columns.

If you at least meet the Energy Code requirements, your project will be approved.

Write N/A in any section that does not apply to your project.

Window U Factor (lower U is better): U .30 (maximum), U-.32 (if log walls in Zone 5), U-.30 (if log walls in Zone 6) and U .45 (Thermally Isolated Sunrooms only).

Skylights: U .55 (or less), U .70 (Thermally Isolated Sunrooms only).

Write in U-Value, and check Sunroom or Log Walls if it applies.

Flat Ceiling with Raised or Energy Trusses R-value: R-49 (Zone 5 or 6) if using the construction technique, or R-38 (Zone 5 or 6) if maintaining the full R value over the plates, and R-49 if log walls.

If using only R-38 in Zone 5 or 6 you must check the Flat Ceiling box: by checking this box, I certify that this structure is being built with a raised energy truss or that the full R-value of the ceiling insulation will be maintained over the outside plates.

EC-1 Footnote i, Ceilings with attic spaces: R-38 in Zone 5 or 6 will be deemed to satisfy the requirement for R-49 wherever the full height of uncompressed R-38 insulation extends over the wall top plate at the eaves or the full R-value is maintained.

Sloped or Cathedral Ceiling: R-30 (Zone 5 & 6) if less than 500 ft sq or 20% of total ceiling area, and R-24 (Thermally Isolated Sunrooms only).

Above Grade Wall R-value (page 2), Zone 5: R-20 Cavity Insulation only or R-13 plus R-5 Cavity plus Continuous Insulation or Assembly U-Factor of, or less than 0.060.

Above Grade Wall R-value (page 2), Zone 6: R-20 plus R-5 Cavity plus Continuous Insulation or R-13 plus R-10 Cavity plus Continuous Insulation or Assembly U-Factor of, or less than 0.045.

Above Grade Wall R-value (page 2) for Thermally Isolated Sunrooms only: R-13.

Log homes must comply with ICC400-2017, have an average minimum wall thickness of 5” or greater with specific gravity of ≤0.5 or 7” with specific gravity >0.5.

R-20 + R-5 means R-20 cavity insulation plus R-5 continuous insulation.

For the wall: a reduction of not more than R-3 of the required continuous insulation is permitted where the structural sheathing covers 40% or less of the gross area of the exterior walls. For the Slab Edge line on page 3 (iii): slab edge insulation must start at the top of the slab edge and extend a total of two (Zone 5) or four feet (Zone 6).

Door U-Value: U .30 (maximum). One opaque door in the thermal envelope is exempt from the U-factor requirement.

Floor R Value: R-30 or Insulation sufficient to fill joist cavity, minimum R-19.

If conditioning the basement you must insulate Basement Walls. If not, you may insulate either Floor or Basement Walls and Slab Edge (if ≤ 1' of grade).

Basement or Crawl Space Wall R Value, for both Zone 5 and Zone 6: R-19 Cavity Insulation or R-15 Continuous Insulation.

Slab Edge R Value: R-10 2' (Zone 5) 4' (Zone 6); check Heated Slab and add R-5 if the Slab is heated, or R-15 under entire heated slab if a log home.

A blower door test is required. The test must demonstrate an air exchange rate of three Air Changes per Hour (ACH) or less @ 50 Pa.

Write who conducted the Blower Door Test, then the Result (at 50 Pa) in CFM, the Interior Volume in CF and the ACH.

Ducts shall be pressure tested to determine air leakage by either 1) rough-in test or 2) post- construction test.

Rough in Test: Ducts must be no leakier than 6 CFM per 100 sqft of conditioned floor area with air handler installed or 4 CFM per 100sqft without the air handler installed. Post Construction: Ducts must be no leakier than 8 CFM per 100 sqft of conditioned floor area.

Write who conducted the test, then the Duct test result at 25 Pa for the Post construction or the Rough-in test.

Submit pages 1,2 and 3 only to local municipal code official or NH Department of Energy at energycodes@energy.nh.gov.