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Cooling
Cooling Overview
Air Conditioning Repair
Air Conditioners
Heat Pumps
Ductless Mini Split Systems
Thermostats
Heating
Heating Overview
Heating Repair
Gas Furnaces
Heat Pumps
Ductless Mini Split Systems
Attic Insulation
Air Quality
Air Quality Overview
Air Cleaners and Purifiers
Whole-House Humidifiers
UV Germicidal Lamps
Duct Cleaning
Duct Replacement
Aeroseal Duct Sealing
Maintenance
Maintenance Overview
Cooling System Tune-Up
Heating System Tune-Up
Why Maintenance?
Duct Cleaning
About Us
Company Overview
Why Choose Air Specialist?
History
Contact Us
Blog
Referral Club
Company References and Affiliations
Special Offers
Vacuum
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Vacuum
A pressure below atmospheric pressure. 30 inches Mercury (periodic symbol “Hg”) is a perfect vacuum.
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