Click On Link

Ventilation Verification Services

Thomas Varney

Norway, Maine

BPI #5019699

SFMO #INS1116

TPI #65

Serving Parts of

Androscoggin, Cumberland, Oxford

and Sagadahoc Counties

A test could be conducted as soon as the

house is air sealed with a continuous air barrier/responsive vapor retarder to assess the air tightness. The code test should be done when the building is finished.

CFM verification of kitchen, bath, laundry and similar rooms. ERV/HRV whole house ventilation determined by ASHRAE 62.2 2019 and RED Calc.

REScheck Compliance Services

REScheck Energy Program can be configured to use many different paths to compliance. Each path can then be compared for the most practical and cost effective construction.

Testing can be conducted as soon

as the system is air sealed. Duct testing should be done before a blower door test as any duct leakage will add to the blower door test.

ASHRAE 62.2 Services

The RED Calc Tool should be completed

before construction begins. This will give you the amount of ventilation needed to provide a minimum rate to keep the occupants healthy. This can be through exhaust from bath fans and range hood fans. Alternately it can be through whole house balanced ventilation with an ERV/HRV. The Required mech vent above will give you the cfm rating for sizing the equipment. The sizing should account for flow resistance of the ductwork with room for the boost mode.

2021 IRC will be enforced on April 7, 2025

One & Two Family Dwellings