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Heating Services
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Trust Certification
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Licenses and Insurance
Products
Menu Toggle
Air Conditioners
Furnaces
Heat Pumps
Ductless Split Systems
Air Handlers
Thermostats
Air Purifiers
UltraViolet (UV) Germicidal Lamps
Generators
Zoning Your Home
Financing
Services
Menu Toggle
Heating Services
Cooling Services
Maintenance
Menu Toggle
Maintenance Agreements
Why Maintenance?
Cooling System Tune-Up
Heating System Tune-Up
Flat-Rate Pricing
Knowledge
Menu Toggle
Knowledge Overview
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Blog
Do-It-Yourself Tips
Resource Library
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AC or DC
Home
AC or DC
August 13, 2009
Abbreviation for equipment capable of operating on alternating or direct current.
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