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Miller Heating & Cooling LLC

Professional-Quality Indoor Comfort 302-750-2409

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About Us
Miller Heating & Cooling LLC is family owned and operated. Our service technicians have over 20 years experience addressing heating and cooling needs in Delaware. Our technicians complete ongoing training.

Members of the Refrigeration Service Engineers Society (RSES)
Members of the Middletown Chamber of Commerce
Members of Middletown II BNI Chapter (Business Network International)

Licensed, Bonded & Insured


Our Services include:
    Free Estimates
    Air Conditioning & Heating System

    Air Conditioning & Heating System Repairs
    Preventative Maintenance
    Service Agreements
    Air Purification Installations
    Energy Saving Thermostats
    Humidifier Installation

    Financing Options Available for New Installations

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Customer testimonials:

Andrew Miller of Miller Heating & Cooling fixed my AC. Not only did he do a great job, he drove up from the beach to do it on a Saturday, and did not charge me an arm and a leg!! Use this company if you need your Heating or Cooling repaired!!!!! Thanks, J.W.

I called Miller Heating & Cooling to repair my daycare A/C. The repair was made the same day.
Thanks, M.C
Last year my A/C was not cooling as well in the past. I had Miller perform a A/C tune-up. The tech showed me why the unit was not cooling (Grass covering the outdoor unit) as well in the past. The tech cleaned the unit and I could feel the difference on the first hot day.
Thanks, R.T
My oil burner was not running. Miller was out the same day and had my unit running
Thanks, Ms. M.S