Dehumidified Air Solutions and PFAS, what the company told Minnesota

Dehumidified Air Solutions has filed 17 PFAS disclosures with the Minnesota Pollution Control Agency, covering 13 products and naming 5 distinct compounds across 9 components. 1 of those filings report the part is 90 to 100% PFAS by mass. Everything below is the company’s own statement to a regulator, not our assessment.

Disclosures filed
17
Products covered
13
Compounds named
5
Declared uses
5

How much is reported

Concentration bands as filed, heaviest declared first, with filings that give no concentration at the bottom. Counts are of filings, since one product can report more than one compound.

  • 90 to 100%1 filing
  • 600,000 to <900,000 ppm (90%)2 filings
  • 300,000 to <600,000 ppm (60%)1 filing
  • 150,000 ppm to <300,000 ppm (30%)6 filings
  • 10,000 ppm to <150,000 ppm (15%)1 filing
  • 1,000 ppm to <10,000 ppm (1%)6 filings

All 17 filings

Humidity temperature sensor 0/2-10v 2in probeE+E Elektronik
Where in the product,
filter cap
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
90 to 100%

PN 5947 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

VALV Butterfly 2in Lug StyleDM Valves & Controls Inc
Where in the product,
O-Ring/Gasket
What it is doing,
Lubricating agent
Compound,
poly(vinylidene fluoride-co-hexafluoropropylene) (VDF-co-HFP (FKM 1)) (CAS 9011-17-0)
How much the filer reports,
600,000 to <900,000 ppm (90%)

PN 4476 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Refrigerant 454B 100LBSMESSER CANADA
Where in the product,
Refrigerant Gas Blend
What it is doing,
Refrigerants
Compound,
acetic acid, [1-[difluoro[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]difluoro-, polymer with tetrafluoroethene (CAS 70776-76-0)
How much the filer reports,
600,000 to <900,000 ppm (90%)

PN 4105 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Refrigerant 454B 100LBSMESSER CANADA
Where in the product,
Refrigerant Gas Blend
What it is doing,
Heat transferring agent
Compound,
2,3,3,3-tetrafluoroprop-1-ene (CAS 754-12-1)
How much the filer reports,
300,000 to <600,000 ppm (60%)

PN 4105 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

DAMP actuator 24VAC spring return on/off no limit switchBelimo Aircontrols Inc.
Where in the product,
Internal gears & wire insulation
What it is doing,
Lubricating agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN 6563 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

DAMP actuator 24VAC spring return on/off no limit switchBelimo Aircontrols Inc.
Where in the product,
Plastic housing
What it is doing,
Flame retardant
Compound,
potassium 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate (CAS 29420-49-3)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN 6563 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Damper Actuator, 45 in-lb , Non fail-safe, AC/DC 24 V,Belimo Aircontrols Inc.
Where in the product,
Internal gears & wire insulation
What it is doing,
Lubricating agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN DAMP-75-1061 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

VALV Actuator 24V Non spring Modulating 180 in.lbBelimo Aircontrols Inc.
Where in the product,
Internal gears & wire insulation
What it is doing,
Lubricating agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN 7105 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

VALV Modulating 3-Way FPT 1 1/4 Cv25 No SpringBelimo Aircontrols Inc.
Where in the product,
Valve seat
What it is doing,
Lubricating agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN 9326B · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

VALV Butterfly 2in Lug StyleDM Valves & Controls Inc
Where in the product,
O-Ring/Gasket
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
150,000 ppm to <300,000 ppm (30%)

PN 4476 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Humidity temperature sensor 0/2-10v 2in probeE+E Elektronik
Where in the product,
special seal
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
10,000 ppm to <150,000 ppm (15%)

PN 5947 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

High Pressure Switch cw 1/4in Shrader Depressor cut-out 600Ecotherm Inc.
Where in the product,
Low/High Pressure Switch
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 5835 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

High Pressure Switch cw 1/4in Shraeder Depressor cut-out 565Ecotherm Inc.
Where in the product,
Low/High Pressure Switch
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 6640 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Low Pressure Switch cw 1/4in Shraeder Depressor cutin 105Ecotherm Inc.
Where in the product,
Low/High Pressure Switch
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 6639 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Low Pressure Switch cw 1/4in Shraeder Depressor cutout 80Ecotherm Inc.
Where in the product,
Low/High Pressure Switch
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 5851 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Pressure transducer, 0-200 psig, 1-5 vdc 1/4in SAE flareEcotherm Inc.
Where in the product,
Internal seal
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 5658 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Pressure transducer, 0-600 psig, 1-5 vdc 1/4in SAE flareEcotherm Inc.
Where in the product,
Internal seal
What it is doing,
Anti-static agent
Compound,
Ethene, 1,1,2,2-tetrafluoro-, homopolymer (CAS 9002-84-0)
How much the filer reports,
1,000 ppm to <10,000 ppm (1%)

PN 5785 · Minnesota disclosure MN-F2PEHZO · published 2026-07-31

Other companies that have filed

Source, manufacturer filings made to the Minnesota Pollution Control Agency under the state’s PFAS in Products law and published through PRISM, run by the Interstate Chemicals Clearinghouse. These are the manufacturers’ own statements, not our grades and not laboratory results. A filing covers the product as sold in Minnesota and says nothing about products or formulations the company did not file. Reporting was still open when this was pulled, so absence from the set is not evidence a product is PFAS-free.