Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage showcases the Blower Door by Retrotec, highlighting its patented SmartCloth technology. Ideal for air infiltration testing in residential and small commercial settings. Does not include promotional offers.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage depicts a professional standing next to a fully assembled Retrotec Blower Door System, emphasizing its user-friendly setup. An optional hard-sided fan case for secure storage is also shown.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage features the 5000 Series Calibrated Fan by Retrotec, showcasing its sleek design and emphasizing its calibration for precise air infiltration testing.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage displays the 5000 Series Calibrated Fan equipped with Range Ring A, B8 Plate, and 8 x 4-inch Blank Plugs, illustrating its versatile and comprehensive testing capabilities.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage shows a professional standing next to a fully set-up Retrotec Blower Door System, hand on the DM32 digital gauge, highlighting ease of use and advanced technology in air infiltration testing.
Retrotec Blower Door | 5100 Series
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage showcases the Blower Door by Retrotec, highlighting its patented SmartCloth technology. Ideal for air infiltration testing in residential and small commercial settings. Does not include promotional offers.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage depicts a professional standing next to a fully assembled Retrotec Blower Door System, emphasizing its user-friendly setup. An optional hard-sided fan case for secure storage is also shown.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage features the 5000 Series Calibrated Fan by Retrotec, showcasing its sleek design and emphasizing its calibration for precise air infiltration testing.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage displays the 5000 Series Calibrated Fan equipped with Range Ring A, B8 Plate, and 8 x 4-inch Blank Plugs, illustrating its versatile and comprehensive testing capabilities.
Vent Cap SystemsRetrotec, Ltd.Retrotec Blower Door | 5100 SeriesImage shows a professional standing next to a fully set-up Retrotec Blower Door System, hand on the DM32 digital gauge, highlighting ease of use and advanced technology in air infiltration testing.

Retrotec Blower Door | 5100 Series

Get a FREE $775 Total Home Vent Cap Pack with Every Blower Door Seal supply vents faster. Eliminate tape. Show up with a cleaner, more professional testing system. Includes: Free $775 Vent Cap Pack + Free Shipping Seal every supply vent in seconds — no tape, no mess Speed up full-home testing workflows Deliver a cleaner, more professional result to homeowners and builders The 4 Nodes of Professional Duct Testing Every clean, repeatable duct test depends on four control points. Most setups only address one — leaving time, mess, and inconsistency in the process. Supply Sealing → Vent Caps Seal...
$ 4,950.00
$ 4,950.00
Model: Wifi & Regular Cloth
Description
Description
x

Get a FREE $775 Total Home Vent Cap Pack with Every Blower Door

Seal supply vents faster. Eliminate tape. Show up with a cleaner, more professional testing system.

Includes: Free $775 Vent Cap Pack + Free Shipping

  • Seal every supply vent in seconds — no tape, no mess
  • Speed up full-home testing workflows
  • Deliver a cleaner, more professional result to homeowners and builders

The 4 Nodes of Professional Duct Testing

Every clean, repeatable duct test depends on four control points. Most setups only address one — leaving time, mess, and inconsistency in the process.

  • Supply Sealing → Vent Caps
    Seal supply vents instantly without tape, mess, or callbacks.
  • Return Sealing → Duct Ninja
    Seal return grilles under pressure without ladders or guesswork.
  • Access → Pole RAT
    Install and remove caps from the floor — no dragging ladders through homes.
  • Equipment → Blower Door
    Measure, verify, and document building airtightness with precision.

This isn’t just equipment — it’s a complete testing system.

With your Blower Door, you control the measurement node. The included Vent Cap Pack helps you control the first.

Retrotec 5100 Series Blower Door System

The Retrotec 5100 Series Blower Door System delivers fast, accurate building airtightness testing for residential and small commercial applications. Designed for professionals who need reliable performance, flexible operation, and fast setup in the field.

System Highlights

  • DM32X Digital Gauge: Accurate readings with a modern touchscreen interface
  • Six Flow Ranges: Wide measurement capability across different building sizes
  • Complete System Package: Fan, frame, gauge, software, and accessories included
  • Quick Connect Frame: Fast setup with added stability
  • Manual or Automatic Testing: Adapt to any workflow or job requirement
  • 10-Year Fan Warranty: Built for long-term professional use

Ideal For

  • Energy auditors
  • HVAC contractors
  • Building and remodeling professionals
  • Home inspectors

Why Professionals Pair It with Vent Caps

Blower door testing requires sealing every supply vent. Tape is slow, messy, and leaves residue—especially in finished homes.

Your FREE Total Home Vent Cap Pack solves that immediately:

  • Reusable Vent Caps install in seconds
  • No tape, no cleanup, no callbacks
  • Consistent sealing across the entire home
  • Cleaner, more professional presentation during testing

This isn’t just a blower door — it’s a better workflow.

Instructional Video

Upgrade Your Testing Setup Today

Get the Retrotec 5100 Series Blower Door System and receive a FREE $775 Total Home Vent Cap Pack with your purchase.

Faster setup. Cleaner jobs. Better results.

Read More
Shipping & Return
Shipping & Return
x

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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