Home Assessment

Energy Audit with Forward Looking Infrared Camera / Blower Door Test

Evaluate Heating Cooling Bills

Determine Where To Seal And Insulate

Scan Cold Spots / Hot Spots

Energy Audit : Thermal Scan And Blower Door Test For My Home

An energy assessment includes a blower door test and infrared scan which gives homeowners a whole house  understanding of air movement. By using this method we will help determine areas where heated air escapes or radiate in the summertime. Because a blower door uses a fan to create negative pressure in your house or slightly depressurize the house, outside air is pulled in through gaps, making them easier to find with our infrared cameras.

A blower door test is a standard measure of the leakiness of the house to air. This air infiltration accounts for as much as 40% of the cost of space heating for old, leaky houses.

The blower door equipment blows air out of the house and depressurizes the house to 50 Pascals (Pa) relative to the outside, and measures the airflow through the blower door fan required to maintain this level. This is the amount of air leaking into the house through gaps, cracks, joints, or directly through some materials. The pressure 50 Pa is equal to 0.2 inches of the water column, or about 0.007225 psi, roughly the pressure exerted by a moderately strong wind blowing against the house.

Several forces drive the air movement through the building shell:

The blower door test allows us to:

Infrared Thermal Imaging And Blower Door Test

With infrared thermal imaging cameras, our technician can graphically display and photograph the insulation levels and cold or hot spots within your walls, ceiling, floors without creating any holes. Most people are amazed when they see a vivid image of where they are missing insulation and what that does for heat loss in the winter or heat gain in the summer. Making the invisible visible. 

Minimum Ventilation Requirements (MVR): In order to maintain acceptable indoor air quality, some fresh air is required. In leaky homes this is easily accomplished through the building shell. However, for especially tight houses mechanical ventilation is required. Typical standards require that air leakage provides either 15 CFM per person or 0.35 ACHn, whichever is greater.

Thermal imaging helps to diagnose the problem rather than merely identify symptoms,  identify and document: Electrical faults before they cause a fire, overloaded and undersized circuits, circuit breakers in need of immediate replacement, missing, damaged, and/or wet insulation, heat loss and air infiltration in walls, ceilings, floors, windows and doors, water and moisture intrusion that could lead to mold, possible pest infestation, roof leaks, before they cause serious damage, air conditioner compressor leaks, under fastening and/or missing framing members, structural defects, broken seals in double pane windows, energy loss and efficiency issues, dangerous flue leaks, damaged and/or malfunctioning radiant heating systems, unknown plumbing leaks, and overheated equipment. These color images can then be included in your IR inspection report providing supporting documentation to the report. This the imaging technique is a powerful and noninvasive means of monitoring and diagnosing the condition of buildings. IR inspections can provide immediate documentation of as-built & post-restoration conditions, post-damaged material assessment, energy inefficiency, and electrical problems. Typically, moisture on building materials will evaporate and cool by as much as 39 degrees Fahrenheit. A wet spot (when observed with infrared camera) is clearly visible as a distinct cool spot.

 

thermal imaging scan bedroom over garage cold : warm air movement heat escape e4 flir cam green attic insulation
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Corner wall had a major air infiltration, can be solved by insulating all exterior walls with blow in cellulose under high presure.

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Ifrared image discoverd missing chimney insulation, air seal and blow in rookwool was recomended.

Energy Assessment - Free Inspection 3

Infrared image help discovered bad weatherstrip which was replaced by Green Attic Insulation.

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Infrared image of missing wall insulation and cold air infitration by outlets, Green Attic did blow in cellulose dense pack and foam aroun outlets.

Energy Assessment - Free Inspection 5

Pull-down ladder had litle to no R-value, and allowed warm moist air to escape in to the attic, Green Attic built a 12 inch wall with a R-39 insulated plywood door on top.

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Rim joist cold air infiltrating infrared image Green Attic needs fiberglass removal and insert foam boards and seal with foam.

Some common deficiencies are already visible without a blower door test and thermal imaging

The thermal imager will confirm to our eyes what we are already feeling. The thermal imager will confirm unintentional gaps in the pressure barrier ( air barrier or building envelope).

Two proven facts, where there is air infiltration / heat escape, there is cobwebs / and or cracked caulk and paint around cometic seams. The caulk or paint is the last line of defense against air intrusion, and due to temperature differences, it is inevitable. Visit after visit, house after house, same indicators, same information, same proof.

Green Attic starts with an exterior property walk. We locate impactful unintentional gaps in the building envelope. Example, window frame to siding / brick not caulked. Sometimes it is missing, sometimes it is cracked, sometimes it is poorly applied / partially applied. The resulting air intrusion comes through the path of least resistance ( think water / energy ) such as wall outlets and most commonly base shoe / baseboard trim.

A home energy audit is a wonderful thing. So valuable.

An energy audit generally consists of air leakage detection and identification, insulation evaluation, house heating system evaluation, water heating evaluation, appliance evaluation, computer and electronics evaluation, doors and windows, evaluation, lighting evaluation, personal habits, blower door test for CFM and ACH, and a summary report.

 

cold spots in corner house drafty cold thermal scan energy audit green attic insulaition
air leakage stack effect cold air drafty home thermal imager
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Thermal Imaging to diagnose heat loss in winter and heat intrusion in summer

Save Up to 50% On Your Heating Bill

Green Attic will calculate the sq ft of the home and volume ( cubic ft volume) and determine the ACH ( air exchange per hour). This is a valuable number for new construction / remodel as is is most commonly required to be at 4.0 in order to receive occupancy permit.

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“Here at Green Attic Insulation , we know time is money, which is why we aim to provide the most amount of truthful accurate informative relative information to you in the easiest to understand possible way. That’s why we provide attic insulation consultations in house or over the phone, helping you to pinpoint the major points of heat transfer out of your home and identifying unintentional air leakage. We help you to properly seal and insulate your home so your bill reflects immediate savings. Best of all, you and your family can enjoy nice, cozy, and warm home.” 

Schedule an Energy Audit Today ! Starting At $250

An energy audit generally consists of air leakage detection and identification, insulation evaluation, house heating system evaluation, water heating evaluation, appliance evaluation, computer and electronics evaluation, doors and windows, evaluation, lighting evaluation, personal habits, blower door test for CFM and ACH, and a summary report.

  • CFM @ 50Pa 
  • ACH @ 50Pa
  • Target Leaks 
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                       We are BPI Certified Contractor

BPI has the highest standards in energy efficiency and green building. That’s why all our technicians are BPI certified.  BPI Requires professionals to stay up to date, so you know that everyone licensed through BPI is fully up to date on new research & technology.


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