Insulation by Marfi

Insulation for New and Existing Structures

(718)490-2715

(888).98.Insulate

Serving the NYC Metro

Our services

We offer a wide range of services, including:


Contact Us

(718)490-2715

(888).98.Insulate


Welcome to Insulation by Marfi

Home inspection performance & Energy Management

Insulation By Marfi products work with professional energy efficient engineers to create efficient designs for each individual project. From the plans of your home, an energy analysis and an accurate heat loss calculation can be created which will enable you to see the energy savings before your home is built. Also, the analysis and design specification will guide the mechanical contractor to properly size your heating, ventilating, and cooling systems, which will most likely save you more money.

Insulation By Marfi Duct Leakage Testing
Is There a Thief in Your Duct Work? The Blower Door is a whole house testing system which indirectly measures duct leakage by pressurizing the entire house to a standard testing pressure. A Duct Blaster® is used to directly pressure test the duct system for air leaks, much the same way a plumber pressure tests water pipes for leaks. Insulation By Marfi compares the whole house test before and after all registers are temporarily sealed, the Blower Door provides you with an estimate of duct leakage to the outside.
There are more than a million miles of duct work in U.S. homes. And industry experts estimate that more than two-thirds of them are leaky enough to justify sealing or repair. Leaky ducts can significantly increase air conditioning and heating bills, dramatically reduce equipment capacity and performance, as well as result in potentially dangerous indoor air quality problems. In fact, duct leakage is responsible for many of the comfort complaints experienced by homeowners today.

Why Is Duct Leakage Important?
Leaks in forced air duct systems are now recognized as a major source of energy waste in both new and existing houses. Studies indicate that duct leakage can account for as much as 25% of total house energy loss, and in many cases has a greater impact on energy use than air infiltration through the building shell. Just as important, duct leakage can prevent heating and cooling systems from doing their job properly, resulting in hot or cold rooms, and humidity problems. Worse yet, duct leaks can create air quality problems by pulling pollutants and irritants directly into the house.

Here are just a few of the problems resulting from duct leakage:

  • Leaks in the supply duct work cause expensive conditioned air to be dumped into the attic, crawlspace or garage instead of into the house.
  • Return leaks pull outside air (hot in summer, cold in winter) into the duct system reducing both efficiency and capacity. In humid climates, moist air being drawn into return leaks can overwhelm the dehumidifying capacity of air conditioning systems causing homes to feel clammy even when the air conditioner is running.
  • Heat pumps are particularly susceptible to comfort complaints from duct leakage, especially during the heating season. Duct leaks can cause the air coming from heat pumps to feel luke warm or even cold during the winter. In addition, leaky duct work has been found to greatly increase the use of electric strip heaters in heat pumps during the heating season.
  • Leaks in return duct work draw air into the house from crawlspaces, garages and attics bringing with it dust, mold spores, insulation fibers and other contaminants.
  • Household depressurization from duct leaks and imbalanced duct systems can cause spillage of combustion products (from furnaces, water heaters and fireplaces) into the house.

Measuring Duct Leakage

  • With the Blower Door running, duct leaks can be pinpointed using a hand-held smoke puffer, or a leak detection tool called a pressure pan.
  • In addition to diagnosing duct leakage problems, the Blower Door can identify building envelope improvements that will reduce energy use and increase comfort.
  • Blower Door air tightness measurements can also be used in HVAC equipment design and sizing decisions, and to
    • With the Blower Door running, duct leaks can be pinpointed using a hand-held smoke puffer, or a leak detection tool called a pressure pan.
    • In addition to diagnosing duct leakage problems, the Blower Door can identify building envelope improvements that will reduce energy use and increase comfort.
    • Blower Door air tightness measurements can also be used in HVAC equipment design and sizing decisions, and to help estimate the need for mechanical ventilation.