Barron Heating AC Electrical & Plumbing Blog: Archive for the ‘Blower Door’ Category

Do you know your home? Really?

Wednesday, December 2nd, 2015

A little bit of useful knowledge can go a long way for homeowners.


The average suburban family home has become a much more complicated and sophisticate system than ever before! Long gone are the days of wood-burning stoves and cracking a window open to feel the cool summer breeze. Today’s home commonly has forced-air ductwork, higher efficiency HVAC systems, geothermal systems, and electronic control systems. Many of these systems are new to contractors so it is no wonder that the average U.S. homeowner does not understand how to keep their home performing well. Homeowners must rely on a hired expert – but choosing the right one and one you can trust can be a tricky path.

So, how can homeowners protect themselves? Get to know your home! There are three basic categories of knowledge every owner should have about their home:

  1. Required knowledge
  2. Useful knowledge
  3. Advanced knowledge

Required knowledge

What kinds of things fall into the category of required knowledge? We recommend the following:

  • Water source: where does your home’s water come from (municipal water, well water, spring water)?
  • Waste water: where does your home’s waste water go (septic tank, municipal sewer pipe)?
  • Water main location: where is the water main for the home?
  • What type of water heater does your home have?
  • What type of appliance heats your home and where is it located?
  • What type of fuel is used to heat your home?
  • Does your home have an emergency on/off switch for the heating system and where is it located?
  • What is the location of your home’s fire extinguisher?
  • Does your home have air conditioning and where is it located?
  • Does your home have a thermostat control and where is it located?
  • Where are the locations for the main electrical panel and circuit breakers?

Useful knowledge

What kinds of things are useful and good to know about your home? We recommend the following:

  • What type of roofing is on your home’s roof?
  • What type of plumbing supply pipes are used in your home (copper, PVC)?
  • How is your home insulated (attic, roof, walls, how much, what type)?
  • Are your windows single-glazed, double-glazed or triple-glazed?
  • Does your home have removable storm windows?
  • Does your home have a mechanical ventilation system, if so, what type?

Gathering answers to these questions will better prepare you for work that might be performed in your home and will help prevent you from being swindled by crooked contractors.

Advanced knowledge

If homeowners take a little extra time to learn a few building science principles and consider their home as a “whole system” it will be easier to select the appropriate contractor to perform repairs, maintenance or conduct testing on your home. Some of the things that would fall into this category include:

  • Why does infiltration and exfiltration matter?
  • Where are air leaks most often located?
  • How air movement can undermine the performance of fluffy insulation.
  • How can positive and/or negative pressure affect your home?
  • What kinds of conditions can lead to condensation within your home?
  • What are the most cost-effective energy retrofit measures?
  • What are the advantages and disadvantages of different types of heating fuel?

We are not suggesting that homeowners become home performance experts, but by getting to know your home a little better you can protect yourself and save money in the long run by choosing a contractor with knowledge and confidence in home performance service work. By gathering some basic knowledge about your home, you can work with your contractor to decide how to make your home the best total system it can be for you and for your family.

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I can’t believe I’ve never seen this before!

Tuesday, July 21st, 2015

Blower Door Demonstration on Home Improvement’s Tool Time… Enjoy!

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A Home Performance Assessment In Pictures

Thursday, April 9th, 2015

Have you ever wondered what happens when you sign up for a Home Performance Assessment?

Well, in our habit of demystifying all things HVAC, we have laid out a few simple photos and descriptions of some things that could happen at a Home Performance Assessment. Every home’s assessment will look different. And, not all of the tests and procedures included in this assessment are even pictured here. Homes are like snowflakes, no two have exactly the same components; so we happily customize our tests to your home, and your HVAC company should, too.

After the assessment (at the same appointment), all of the data is analyzed, compiled, and printed. The results are shared with the homeowner and a plan is hatched for where to go from there. Home Performance Assessments are the only conclusive way to know that you are saving the most energy possible and that all of the elements of your home are working together to create a safe, healthy, comfortable environment for you and your family.

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Because James Brown says so…

Wednesday, August 27th, 2014

The first thing you need to watch when researching home performance:

You may now continue your education.
Professor Brown has completed his lecture.

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The Most Stringent Building Energy Standard in the World

Friday, May 9th, 2014

Passive House (Passivhaus in German) is the most stringent building energy efficiency standard in the world.  It is not just an energy code or energy design but is integrated with the architectural design of the building to create a wholistic approach to reducing the building’s heating losses and thus decrease the need for expensive mechanical heating equipment.  The end result is a house that has a drastically reduced ecological footprint (low carbon emissions), along with superior comfort and indoor air quality.

According to Passive House Alliance United States, buildings that meet this standard use 80 percent less energy than conventional buildings.  Specifically this is achieved through maximizing your gains and minimizing your losses.  The process begins with strategic design and planning to test “what if” scenarios using certified passive house software.  During this process specific climate, siting and sizing is performed to ensure things like windows being positioned to maximize solar gain.  Passive house construction uses roughly twice the insulation value of modern code and great care to ensure that the building has no breaks in the thermal envelope.  Blower-door air leakage testing is an important component of passive house construction as the standard requires very low leakage to the exterior (0.6 air changes per hour at 50 pascals).  Advanced windows and doors are also used to minimize air leakage.

Now that the house is nice and air tight an Energy Recovery Ventilator is used to provide adequate, filtered fresh air for the home.  An ERV has the advantage of recycling indoor energy by passing that energy to incoming air further decreasing the heating load on the house.  The decreased heating load on the house makes the use of alternative energy to power your building much more attainable and cost effective.

Content from: http://www.phaus.org/learn/passive-house-education/what-is-passive-house-

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What You Gain From An Energy Audit

Friday, October 4th, 2013


With qualified and experienced inspectors an energy audit will pinpoint the cause of many problems that lead to an uncomfortable home. Whether its uneven temperatures, bad air quality, or dust problems it is important to look at the home as a system to find the appropriate solution.

There are many important areas to test and analyze for an effective audit on home performance.

  • First is an informative meeting with you, the home owner. There is nobody who knows the experience of living in your home better than you. The inspector should know when and where you experience discomfort throughout your home. Take note of the air quality, consistency of heating, odors, and anything else that you would like to change.
  • Next comes an analysis of your utility bill. Seeing where you have been spending money on energy in the past and present gives you a basis of comparison for future savings and the return on your HVAC investments.
  • The testing begins with a Blower door test. This will help to locate air leakage pathways. Included in this is duct leakage (and repair if necessary). Studies indicate that duct leakage can account for as much as 25% of total house energy loss.
  • By using Infrared Thermography, the most sophisticated analytic tool in energy auditing, wall cavity and ceiling insulation and moisture related issues in your walls can be seen.
  • Moisture Analysis is an often overlooked, but very important step in monitoring the health and durability of you and your home.
  • Its important to analyze flue gas at the hot water heater and other fossil fuel appliances. Combustion Analysis and combustion safety are one of the main focal points in the energy audit and homeowners are often unaware that they have problems with their combustion equipment.
  • The last thing is to look into Weatherization Services. Your energy audit should offer a comprehensive report that will outline the most cost effective path for weatherization work.

Energy audits range in price from $100 up to over $1000. When finding the right provider for this service make sure they offer all of the necessary tests and have the experience and expertise to get you the answers you need.

If you’re interested in an energy audit learn about Barron Heating’s $195 Home & Duct Performance Assessment.

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