The Trusted Local Leader For Heating & Air Conditioning Installation Services Throughout Clayton, Middletown, and Dover, DE

At Envirotemp we are committed to providing our customers with the highest value of heating and air conditioning solutions in the industry. We strive to do this by partnering with top quality manufacturers, employing highly trained HVAC contractors, and supporting their success with continuing education.

Our Goal is 100% customer satisfaction; providing top quality sales, service, and installation that meets and exceeds our customer's expectations.

Our list of services includes:

  • AC repair services
  • AC installation services
  • Heating repair services
  • Heating installation services
  • Heat pump repair services
  • Heat pump installation services
  • Furnace repair services
  • Furnace installation services
  • Geothermal system installation
  • Ductless mini-split installations
  • Ductless mini-split repair services
  • Indoor air quality assessment
  • If you are in need of professional heating & cooling or geothermal repair, replacement, maintenance, or indoor air quality testing in Clayton, Middletown, and Dover, DE, contact us today!

    Residential Services

    Reliable Heating And Cooling Services

    Customer Reviews


    "Just a quick note to let you know how much my wife and I appreciated the fast response your team provided in repairing our Heat Pump. Your overnight response and next day delivery of a replacement compressor was not expected, but greatly appreciated. Thanks again for everything"



    "This past year we needed our heat pump system replaced. After discussing with numerous contractors, we selected Envirotemp because of their knowledge of the systems and competitive pricing. Installation was done on our time schedule in a very professional manner. After experiencing a winter season of comfort and also noticing a reduction in energy cost, we realized we make the right decision with Envirotemp."



    "This is a note of thanks to you and your Envirotemp team. We are quite pleased with all phases of the purchase, removal of the old equipment and the installation of the new equipment. We talked to four companies about replacing our Furnace, AC, Air Cleaner and Humidifier. You answered all our questions (which were many) and you covered every detail of what needed to be done."

    - JIM H.


    "We are pleased to write a letter of recommendation of our Geothermal Heating System which your company installed and has been maintaining. This by far is the best system we have ever had. The house is extremely warm in winter and cool in summer without turning the thermostat to a high degree. In the winter, we are able to leave it setting on 70 and in the summer we usually have to keep it at 75 or higher. Mike and his guys did a great job."

    - JOHN W.


    "We cannot speak highly enough about the skill, service and personal attention we received during and after the installation of our geothermal heating and cooling system. The entire process was completed in a timely, professional and efficient manner."



    "Envirotemp installed two Water Furnace systems in our new home in 2007. The units work great. Mike promised a turnkey installation and he delivered. This included ductwork, well drilling, air cleaners, and submitting all rebate forms. I am very pleased with my geothermal systems."

    - DAN C.


    "Envirotemp installed a Water Furnace geothermal system in our new home in 2004. Mike is a true professional and stands by his work. I am very satisfied with the system and my operating cost."

    - JOE F.


    "We purchased an old Amish home back in 2006. We decided to install two geothermal systems and duct work. Mike and his crew did an excellent job from start to finish. The systems were installed in a timely manner and perform exceptionally well."

    - AL F.


    "Envirotemp Heating, Cooling, and Geothermal is a great company! Their team did a great job installing my geothermal system."

    - CHAD M.


    "My wife and I are very "thankful" for the great job done to upgrade our A/C and heater. The old system was a money pit and Evirotemp installation of the new system has been very cost effective with heat in winter and a/c in the summer. Very efficient and cost less to run."

    - ANDRE J.


    "Wonderful service & price from Mike & his crew! Highly recommend"

    - ANNIE W.

    Trusted Industry Professionals


    At Envirotemp Heating, Cooling, and Geothermal, we take our craft very seriously. As the trusted local leader for HVAC repair, replacement, and installation, you can count on a nationally trained and certified expert performing work on your systems. Next time you are in need of service or repair, look no further than our locally owned and operated HVAC company serving Clayton, Middletown, and Dover, DE. We guarantee that you will feel the difference-from the moment you call our office, until the job is done, we'll make sure you're taken care of.