We strive for friendly service and fair pricing on every project

Located in Exeter, PA. with over 16 years in the HVAC industry.

We are staying up to date on the latest and safest protocols for COVID-19 for safety!

ServicesContact Us

Featured Product

The HALO-LED™ is the industry’s first LED in-duct, whole home and building air purification system that is both mercury free and zero ozone compliant. The HALO-LED™ proactively treats every cubic inch of air conditioned space, reducing airborne and surface contaminants and pollutants through bi-polar ionization and revolutionary, patent pending, REME-LED™ technology.


We offer installation and repair of the following:

Gas Furnaces

Oil Furnaces

Heat Pumps

Ductless Splits

Geothermal Heat pumps

Water Source heat pumps

Hanging Unit Heaters

Oil Boilers

Gas Boilers



Air Scrubber and UV lights

Water Heater

Tankless Water Heaters

and much more!

About Us

Hello my name is Derek, owner and operator of DG Mechanical. I have been involved in all aspects of the HVAC industry over the past 16 years. From industrial, commercial, and residential install to commercial and residential diagnosis and repair. Along with trusted coworkers and associates we plan to make DG Mechanical your go to heating and cooling company. We will bring a smile to your door (although it will be harder to see under a mask) and leave one on your face when we depart. 

Get in touch with us

Proudly serving the following areas: Reading, Wyomissing, Exeter, Sinking Spring, Wernersville, Temple, Fleetwood, Leesport, Bowmansville, Morgantown, West Chester, Lancaster, Shillington, Birdsboro, Pottstown, Douglassville, Shoemakersville and many more!


We take all major credit cards and financing is available apon request. Send us a message to learn more.


You can also call us at 610-401-7985