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Our Story
With over 35 years of combined experience, D & D Heating and Air Conditioning provides sales, installation, and service to HVAC systems for homes and businesses around North Oxford, MA. We are experts at converting oil homes to newer more efficient traditional or ductless systems! D & D technicians and sales force can not only help navigate you through all the options available but guide you through the various incentives and rebates that make switching to a higher efficiency system more affordable than sticking with your old equipment. Since day one, our attention to detail and customer satisfaction has always come first. We have dedicated our company and website to this new way of thinking. Our goal is to provide Worcester County residents, as well as businesses, with efficient and affordable HVAC work.
Regions & Counties Serviced
- New England
Massachusetts 2
- Middlesex
- Worcester
Our CSI Codes
23 01 30 - Operation and Maintenance of HVAC Air Distribution
23 01 50 - Operation and Maintenance of Central Heating Equipment
23 01 60 - Operation and Maintenance of Central Cooling Equipment
23 01 70 - Operation and Maintenance of Central HVAC Equipment
23 05 13 - Common Motor Requirements for HVAC Equipment
23 06 30 - Schedules for HVAC Air Distribution
23 06 30.13 - HVAC Fan Schedule
23 06 30.16 - Air Terminal Unit Schedule
23 06 30.19 - Air Outlet and Inlet Schedule
23 06 50 - Schedules for Central Heating Equipment
23 06 70 - Schedules for Central HVAC Equipment
23 06 70.13 - Indoor, Central-Station Air-Handling Unit Schedule
23 06 70.16 - Packaged Outdoor HVAC Equipment Schedule
23 06 80 - Schedules for Decentralized HVAC Equipment
23 06 80.13 - Decentralized Unitary HVAC Equipment Schedule
23 30 00.00.01 - HVAC Air Distribution
23 31 13.16 - Round and Flat-Oval Spiral Ducts
23 31 16.13 - Fibrous-Glass Ducts
23 31 16.16 - Thermoset Fiberglass-Reinforced Plastic Ducts
23 32 13 - Fabricated, Metal Air Plenums
23 32 36 - Air-Distribution Floor Plenums
23 32 39 - Air-Distribution Wall Plenums
23 32 43 - Air-Distribution Chases Formed by General Construction
23 34 13 - Axial HVAC Fans
23 34 16 - Centrifugal HVAC Fans
23 34 23 - HVAC Power Ventilators
23 35 16 - Engine Exhaust Systems
23 35 16.13 - Positive-Pressure Engine Exhaust Systems
23 35 16.16 - Mechanical Engine Exhaust Systems
23 36 13 - Constant-Air-Volume Units
23 36 16 - Variable-Air-Volume Units
23 37 16 - Fabric Air Distribution Devices
23 38 13 - Commercial-Kitchen Hoods
23 38 13.13 - Listed Commercial-Kitchen Hoods
23 38 13.16 - Standard Commercial-Kitchen Hoods
23 38 16 - Fume Hoods
23 41 43 - Ultra-Low Penetration Filtration
23 41 46 - Super Ultra-Low Penetration Filtration
23 43 13 - Washable Electronic Air Cleaners
23 43 16 - Agglomerator Electronic Air Cleaners
23 43 23 - Self-Contained Electronic Air Cleaners
23 51 13.13 - Draft-Induction Fans
23 51 43 - Flue-Gas Filtration Equipment
23 51 43.13 - Gaseous Filtration
23 57 19 - Liquid-to-Liquid Heat Exchangers
23 57 19.13 - Plate-Type, Liquid-to-Liquid Heat Exchangers
23 57 19.16 - Shell-Type, Liquid-to-Liquid Heat Exchangers
23 64 26 - Rotary-Screw Water Chillers
23 70 00.00.01 - Central HVAC Equipment
23 72 13 - Heat-Wheel Air-to-Air Energy-Recovery Equipment
23 72 16 - Heat-Pipe Air-to-Air Energy-Recovery Equipment
23 72 19 - Fixed-Plate Air-to-Air Energy-Recovery Equipment
23 72 23 - Packaged Air-to-Air Energy-Recovery Units
23 73 13 - Modular Indoor Central-Station Air-Handling Units
23 73 23 - Custom Indoor Central-Station Air-Handling Units
23 74 13 - Packaged, Outdoor, Central-Station Air-Handling Units
23 74 23.13 - Packaged, Direct-Fired, Outdoor, Heating-Only Makeup-Air Units
23 74 23.16 - Packaged, Indirect-Fired, Outdoor, Heating-Only Makeup-Air Units
23 74 33 - Packaged, Outdoor, Heating and Cooling Makeup Air-Conditioners
23 75 13 - Custom-Packaged, Outdoor, Central-Station Air-Handling Units
23 75 23 - Custom-Packaged, Outdoor, Heating and Ventilating Makeup-Air Units
23 75 33 - Custom-Packaged, Outdoor, Heating and Cooling Makeup Air-Conditioners
23 80 00.00.01 - Decentralized HVAC Equipment
23 81 13 - Packaged Terminal Air-Conditioners
23 81 16 - Room Air-Conditioners
23 81 19 - Self-Contained Air-Conditioners
23 81 19.13 - Small-Capacity Self-Contained Air-Conditioners
23 81 19.16 - Large-Capacity Self-Contained Air-Conditioners
23 81 23 - Computer-Room Air-Conditioners
23 81 26 - Split-System Air-Conditioners
23 82 13 - Valance Heating and Cooling Units
23 82 16 - Air Coils
23 82 19 - Fan Coil Units
33 81 33 - Communications Blowers, Fans, and Ventilation
43 11 13 - Gas Handling Fans
43 11 13.13 - Axial Gas Handling Fans
43 11 13.16 - Centrifugal Gas Handling Fans
43 11 23 - Gas Handling Blowers
