Mechanical, HVAC and Electrical business needs a professional modern logo design

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This customer received 108 logo designs from 41 designers. They chose this logo design from Designs_Hubs as the winning design.
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We need a professional modern logo design for a new company based in North Carolina called DCM Mechanical, Inc. We provide service, installation, design and maintenance on commercial and select residential client's Air conditioning, heating, ventilation and electrical systems. Would like a logo with clean lines. Also please tastefully incorporate an electrical symbol, mechanical gear and air waves/flow(blue for cooling and red for heating) within the logo design. We like the similar logos uploaded in the file attached section. Thank you
Updates
One designer was disqualified and awaiting revisions from another designer before we make our final decision.
Logo Text
DCM Mechanical, Inc HVAC and Electrical
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- I prefer for the name to look like this as far as font size and centering - i attached the example below. ( example 1)