Measure Total Air Handler Airflow in Minutes The Digital TrueFlow® Grid from The Energy Conservatory measures airflow through residential air handlers by temporarily replacing the system filter. Slide it into the filter slot with an adapter plate and read CFM directly. Installed next to...

Replacement or Second Duct Blaster® Fan, Ready to Test A new Series B Duct Blaster® fan assembled with a fan speed controller, flow rings 1, 2 and 3, fabric fan cover, connecting trim and foam foot. Add a gauge and you have a second...

Replacement Speed Controller for the Series B Duct Blaster® Fan Variable speed control for the Series B Minneapolis Duct Blaster® fan. Universal 100–240V, 50/60 Hz power. Fan control jack for automated testing and DG gauge cruise control (fan control cable sold separately). Belt clip...

Mount Your Duct Blaster® Right in the Filter Slot Testing from a central return? Pull the grille and filter, slide this 20" x 20" panel into the filter slot, and clip the Duct Blaster® fan to it. No cardboard and tape. H-channel edge gasket...

Haul the Whole Duct Blaster® System in One Bag Heavyweight nylon that resists tears and moisture. Shoulder strap and carry handles. Large zippered center cavity plus zippered end pockets hold all standard Duct Blaster® components. Note: A job-site carrying case, not a shipping container....

Turn Your Duct Blaster® Into a Mini Blower Door A single-hole red nylon door panel sized for the Series B Duct Blaster® fan. Use it with a standard Blower Door frame to test tight homes and apartment units. Velcro strips secure the panel around...

Replacement Standard Ring Set for Model 3 & 4 Blower Door Fans Ring A: 2,800 – 915 CFM Ring B (inside Ring A): 1,100 – 300 CFM No Flow Plate: closes off the fan for baseline readings The rings attach to the fan inlet...

Replacement Ring A for Model 3 & 4 Blower Door Fans Measures 2,800 – 915 CFM. Attaches to the fan inlet with 8 fastener clips. Part of the standard ring set that ships with every Model 3 fan. Ships direct from The Energy Conservatory...

Replacement Ring B for Model 3 & 4 Blower Door Fans Measures 1,100 – 300 CFM. Installs inside Ring A by rotating 6 fastener clips. Part of the standard ring set that ships with every Model 3 fan. Ships direct from The Energy Conservatory...

Protect Your Model 3 Fan Between Jobs Thick foam padding shaped to the curve of the fan housing, with reinforced side panels. Heavyweight nylon that resists tears and moisture. Quick-lock fasteners and zipper closure. Top opening for the fan handle. Note: A transport case,...

Keep Dust and Debris Out of Your Model 3 Fan Nylon cover that resists tears and moisture. Zipper closure. Top opening for the fan handle. Unpadded; for padded protection see the Padded Nylon Fan Case. Ships direct from The Energy Conservatory (TEC BDCASCOR).

Ship Your Model 3 Fan Safely, Again and Again A reusable corrugated plastic box for shipping or transporting the Model 3 Blower Door fan, whether it's going out for calibration or to a job across the country. Removable, replaceable foam inserts hold the fan...

Single-Fan Panel for Wider Doorways A wide single-hole red nylon panel for the Minneapolis Blower Door™, made to fit wider door openings with a commercial frame kit. Velcro strips secure the panel around the frame. Elastic cord in the opening fits snugly around a...

Run Two Fans in One Doorway Two fan openings for two Model 3 or 4 fans in a single frame. Extended width to fit TEC commercial Blower Door frames. Velcro strips secure the panel; elastic cord at each opening fits snugly around the fan....

Run Three Fans in One Doorway Three fan openings for three Model 3 or 4 fans in a single frame. Extended width to fit TEC commercial Blower Door frames. Velcro strips secure the panel; elastic cord at each opening fits snugly around the fan....

Replacement Vertical Side for the Standard Blower Door Frame Adjusts up to 96" long. Integrated EPDM gasket for a tight seal. Corner blocks on each end connect quickly to the top and bottom horizontal pieces. One piece. Ships direct from The Energy Conservatory (TEC...

Replacement Top or Bottom Piece for the Standard Blower Door Frame Adjusts up to 45" wide. Integrated EPDM gasket for a tight seal. Connects to the corner blocks on the vertical side pieces. One piece. Ships direct from The Energy Conservatory (TEC ALUM45H).

Re-Gasket Your Whole Blower Door Frame 25 feet of replacement gasket for the Minneapolis Blower Door™ aluminum frame, enough to redo all four sides of a standard frame. A worn gasket leaks and skews your numbers. Ships direct from The Energy Conservatory (TEC ALUGASK25).

Every Hose You Need for Blower Door and Duct Testing A full set of TEC's non-phthalate PVC pressure tubing in the standard lengths and colors, plus hose connectors and a digital gauge extension tube probe. Restock a worn set or outfit a second rig....

Tight ducts need a smaller hole. Retrotec's 4" (10 cm) range plugs restrict the DucTester fan inlet so it can measure low airflow accurately. When a duct system is too tight for your current plug, the gauge shows "--" instead of a number. The...