Holtzople of Frederick, MD, is a division of Holtzople’s Incorporated, a family owned-and-operated HVAC contractor business for over 30 years. Under the seasoned leadership of owners Jerred and Vicki Holtzople, customers enjoy unmatched quality and service within their local heating and cooling communities of Frederick, MD. Services Offered : Aeroseal Duct Sealing, Air Conditioners, Air Scrubbers, Boilers (Oil & Gas), Carbon Monoxide, Climate Master Savings, Ductless Mini-Splits, Gas Furnaces, Geothermal, Google Nest Pro, Heat Pumps, Holtzople Units, Humidifiers & Air Cleaners, Oil Furnaces