NEW
HEPA 99.97%
Mastercraft USA
Stainless Steel HEPA Backpack Vacuum 4 Gallon CT4 Electric | Enviromaster
4-gallon stainless steel electric HEPA backpack vacuum. Sealed 12" HEPA filter for asbestos, lead and mold cleanup on standard 115V power.
$1,995
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In Stock
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115V
POWER
4 Gal
SS TANK
1.5"
HOSE
99.97%
HEPA
Made in USA
Industry-Leading Warranty
80+ Years in Business
Expert Support
(845) 565-8850
Pro Tip: Change the filter bag when it is about two-thirds full and after every abatement job. A full bag forces fine dust onto the cloth pre-filter and HEPA filter, cutting suction and shortening HEPA filter life. Never wash or tap out a HEPA filter: replace it when airflow drops or the gasket is damaged. Shop Backpack Filter Bags →
Stainless Steel HEPA Backpack Vacuum 4 Gallon CT4 Electric | Enviromaster
The Enviromaster CT4 Electric is built for crews that need HEPA containment and both hands free: abatement contractors on ladders and scaffolding, healthcare cleaning teams working around occupied rooms, and facility staff cleaning ceiling grids, ducts and light fixtures. It runs on standard 115V power, so it works anywhere there is an outlet, with no compressor or air line to drag around. The sealed 12" HEPA filter with gasket captures 99.97% of particles at 0.3 microns. Ahead of it, the filter bag and cloth pre-filter catch the larger debris, so the HEPA filter only handles the finest particles and lasts longer between changes. The 4-gallon stainless steel tank resists dents and corrosion and wipes down clean between jobs. Made in Newburgh, NY. If your site restricts electrical equipment, the CT4 Pneumatic offers the same tank and HEPA filter on compressed air.
- Sealed 12" HEPA filter with gasket (#476617) included, rated 99.97% at 0.3 microns for asbestos, lead and mold cleanup
- Filter bag, cloth pre-filter and HEPA filter work in sequence so the HEPA filter lasts longer between changes
- 4-gallon stainless steel tank resists dents and corrosion and wipes down clean between jobs
- Runs on standard 115V power with no compressor or air line required
- Padded harness with hip belt and mesh pockets keeps both hands free on ladders, scaffolding and overhead work
- Ships with a 1.5" hose, floor nozzle, crevice tool and upholstery nozzle, ready to work out of the box
- Made in Newburgh, NY and backed by the Mastercraft warranty
| Model | Enviromaster® CT4 Electric |
| Series | Critical True HEPA Pro Series |
| Type | HEPA Backpack Vacuum |
| Power Source | Electric, 115V |
| Tank Capacity | 4 Gallon |
| Tank Material | Stainless Steel |
| HEPA Filter | 12" Sealed HEPA Filter with Gasket (#476617) |
| HEPA Efficiency | 99.97% at 0.3 microns |
| Hose | 1.5" × 5' |
| Pickup Type | Dry Only |
| Shipping Weight | 42 lbs |
| SKU | 628743 |
| GTIN | 00810164814579 |
| Made In | Newburgh, NY, USA |
- 1½" Partial Dry Kit (#459291)
- 11" Plastic Crevice Tool (#386413)
- 6" Upholstery Nozzle (#456365)
- 14" Floor Nozzle (#456993)
- B-Vac Hose, 1.50" × 5.0' (#422029)
- 12" Sealed HEPA Filter with Gasket (#476617)
| CT4 Electric ★ | CT4 Pneumatic | Probe 10 | |
|---|---|---|---|
| BEST FOR | Abatement / Healthcare / Overhead Work | Sites Without Electrical Access | Mobility / Multi-Story Buildings |
| POWER | 115V Electric | Compressed Air, 90 PSI | Electric, 1,188W |
| TANK | 4 Gal Stainless Steel | 4 Gal Stainless Steel | 10 Qt Backpack |
| HEPA SEALED | ✓ | ✓ | ✓ |
| PRICE | $1,995 | $2,338 | $1,040 |
Both use the same 4-gallon stainless steel tank and sealed 12" HEPA filter. The CT4 Electric runs on standard 115V power and is the simpler choice anywhere you have an outlet. The CT4 Pneumatic runs on compressed air at 90 PSI and is meant for sites where electrical equipment is restricted. The CT4 Electric is not designed for explosive or classified hazardous atmospheres.
Yes. Its sealed 12" HEPA filter with gasket (#476617) is rated 99.97% at 0.3 microns, the filtration level OSHA and EPA work practices call for when vacuuming asbestos, lead dust and mold. Always follow the OSHA, EPA and state rules that apply to your job, use proper PPE, and dispose of recovered material according to local regulations.
No. The CT4 Electric is a dry-pickup vacuum. Vacuuming liquids can damage the motor and filters and is not covered by the warranty.
Replace the filter bag when it is about two-thirds full and after every abatement job. Inspect the HEPA filter regularly and replace it when airflow drops or when the media or gasket is damaged. Never wash or tap out a HEPA filter. Replacement 12" HEPA filters (#476617) and Backpack Filter Bags (10-pack) are available on mastercraftusa.com.
Yes. Mastercraft® stocks filters, filter bags, hoses and tools for current production machines on mastercraftusa.com. For less common parts, contact Mastercraft® support with your model and serial number.
The CT4 Electric is backed by the Mastercraft® manufacturer's warranty against defects in materials and workmanship. Check your product documentation for the coverage period. The warranty does not cover damage from misuse, improper maintenance, use of non-OEM parts, or operation outside the rated electrical specifications.
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