Summit Heating and Air Conditioning, LLC is a full service HVAC Company providing maintenance, repair, and installation services for air conditioners, heaters, heat pumps, boilers, geothermal systems, water heaters, indoor air quality products, whole house generators, etc. We service residential and light commercial properties located within New Castle and Kent Counties, DE and Cecil and Kent Counties, MD. We are fully licensed, bonded, and insured, and BBB Accredited.

At Summit Heating and Air Conditioning we understand the need for honest, good quality service in this industry. Some contractors and service companies have created a bad reputation for themselves and others, but why compare us to the rest? We ARE the best!

Our team works together to provide each individual with the same service that we would expect to receive as the customer, from the first phone call to job completion- no less! Our technicians are trained to evaluate the customer's concerns, provide solutions to meet the needs of the customer, and educate the customer on why we gave those recommendations. We give fair, upfront, honest pricing, and stand behind all of our work 100%. No job is done until it is done right! We strive to exceed the expectations of all of our customers by going above and beyond the call of duty. From customer service to field service our team is ready, willing, and able to get the job done- Whatever It Takes!

Superior customer service
Thorough follow through
Stand behind all our work, 100%
Available 24/7


Maintenance & Service Agreements - "An ounce of prevention is worth a pound of cure". More true words have never been spoken when it comes to heating and air conditioning! Too often do homeowners neglect to have routine maintenance performed on their HVAC equipment and find themselves making costly repairs in the middle of extreme hot or cold weather. Did you know that you should check your filters periodically and change them at least every 90 days? By not doing this the filter could become clogged, restricting air flow through your HVAC equipment, and causing unnecessary damage to both the unit and your pockets! Make a decision to be proactive instead of reactive by getting a tune up on your heater in the fall and your air conditioner in the spring. Our technicians will not only change your filter but also thoroughly evaluate the performance of your equipment, make any necessary adjustments to achieve peak performance and extend the life of your system. They can also tell you if there are any repairs that you can expect to have to make in the foreseeable future so that you're better prepared when the time comes. Take it a step further and purchase a Service Agreement from Summit Heating and Air Conditioning. When you're a residential Service Agreement customer WE call YOU to schedule your maintenance services. You'll also receive a FREE heating and/or cooling diagnosis as well as a 15% discount on any repairs that may be needed throughout the year. We even offer monthly payment options. Contact us today to schedule your maintenance service!

Repair Services - Summit Heating and Air Conditioning has expert technicians available 24/7/365 for repair services with up front, honest pricing. No tricks; no hidden charges. If your air conditioner stopped working in the middle of the night, we're just a phone call away! If your heater starts blowing cold air on Christmas Eve with a house full of people, we're just a phone call away!

When determining whether your system should be repaired or replaced, some factors we take into consideration are:

When determining whether your system should be repaired or replaced, some factors we take into consideration are:

  • Comfort level throughout home
  • Length of time staying in home
  • Type of system
  • Age of equipment
  • Type of refrigerant used
  • Energy efficiency
  • Energy cost
  • Frequency and cost of repairs


What should I do in case of an emergency?

  • If you are having a medical emergency call 911 immediately.
  • If you are smelling gas please refer to Q2.
  • If you are having any other emergency relating to heating, air conditioning, ventilation, water heaters, or generators please call us at (302) 378-1203 or for immediate assistance. We are available 24/7/365.

What should I do if I am smelling gas?

  • Immediately leave your residence.
  • Do NOT turn any lights on or off, touch any switches in the home, or any other electronic devices as these can all be sources of fire ignition.
  • Do NOT use the telephone inside your home.
  • Go to a neighbor's house or use your cellular phone once you have left the residence and immediately call the fire department to evaluate the situation and determine if the property is safe to re-enter.
  • Once the fire department makes their determination they will likely advise for your gas company to come to the property and locate where the leak is coming from. Once they determine where the leak is you can then contact our office to schedule an appointment for one of our technicians to repair the leak.

What is the average lifespan of an HVAC system?

The average lifespan of central air conditioners and heat pumps is approximately 12-15 years. Furnaces can last much longer with proper care, however, technological advancements generally warrant the need for replacement within the same time frame. It is also more cost effective to replace your entire HVAC system at the same time rather than replacing individual units on separate occasions.

How can I extend the life of my system?

"An ounce of prevention is worth a pound of cure". To best maintain the integrity of your system you want to make sure that you schedule annual check-ups for both your heating and air conditioning systems; once during the spring season for your air conditioner and again in the fall season for your heater. Also, be sure to change your filter regularly every 1-3 months, on average. If someone in your home has been sick with an airborne illness (influenza, the common cold, strep throat, etc.) you may want to change your filter as soon as the illness has been treated so that the germs do not continue to cycle through the ventilation.

How often should I change my filters?

Your filter should be changed regularly every 1-3 months, on average. If someone in your home has been sick with an airborne illness (influenza, the common cold, strep throat, etc.) you may want to change your filter as soon as the illness has been treated so that the germs do not continue to cycle through the ventilation.

What should I do if my heater or air conditioner is making an unfamiliar sound?

Take note of what kind of sound your unit is making. Shut the system off and call Summit Heating and Air Conditioning at 302-378-1203 or 410-398-3233. There can be a variety of reasons why your unit is making a different sound and needs to be diagnosed immediately by a professional.

What should I do if my air conditioning unit if frozen?

Shut your air conditioner off as soon as you notice that it is no longer cooling or is beginning to cool less effectively and then call Summit Heating and Air Conditioning at 302-378-1203 or 410-398-3233 to schedule an appointment with a technician. The unit needs to thaw out before the problem can be diagnosed and repaired. If you do not get an appointment the same day that you noticed the unit freezing up you can let your unit thaw overnight by itself but do NOT turn it back on before the technician arrives. If your appointment is the same day it is recommended that you switch your thermostat dials from "COOL" to "OFF" and also from "AUTO" to "FAN". By following these steps your unit should thaw out quicker and allow for the technician to properly diagnose and repair the problem.

What if my heater is not running at all?

If your heater is not running there are a few things you can do before scheduling an appointment for repair.

  • Check to see that the main switch to the unit is on. If the switch is off simply turn it on and this should rectify the situation.
  • Check your breakers. If they have been flipped then you should just need to flip them back.
  • If there is snow on the ground you are going to want to check your outside vent pipe to make sure the area is clear from snow. If snow is blocking the opening of the vent pipe not only will it cause your system to not operate but can be dangerous, causing carbon monoxide to back up into your home.

If after checking all of these recommendations your unit continues to not operate call Summit Heating and Air Conditioning at (302) 378-1203 or to schedule an appointment for a technician to come to your home and diagnose and repair the problem.

Should I cover my outside unit in the fall and winter months?

It is recommended to cover your outdoor unit during the months that it is not in use. However, you want to make sure that you only cover the very top portion of the unit to keep debris from falling into it. You want to leave the sides open to continue to allow airflow through the unit. Inhibiting airflow could cause irreparable damage to the unit.

What does SEER mean?

Seasonal Energy Efficiency Ratio (SEER), simply put, is a measurement of efficiency for air conditioning systems and heat pumps. The higher the SEER is the more efficient the unit is.

What does AFUE mean?

Annual Fuel Utilization Efficiency (AFUE) is a measurement of efficiency for a heating unit. The higher the AFUE rating the more efficient the unit is.


NATE Certified - Summit Heating and Air Conditioning is a proud employer of NATE (North American Technician Excellence) Certified technicians. NATE tests technicians on real world knowledge of HVAC-R systems with a rigorous, multiple choice and knowledge-based test that validates a technician's knowledge of HVAC. They are the largest, non-profit certification organization for the HVAC industry. Check out the video on the right for more information regarding NATE certification and what it means for you, the customer.

Bryant® Factory Authorized Dealer - Summit Heating and Air Conditioning has met the highest standards for superior skills, service, and a promise of 100% satisfaction guarantee thus earning the privilege of being a Bryant® Factory Authorized Dealer. Summit continually educates and trains technicians on the latest changes and advancements in the industry in order to maintain this standing. Visit Bryant® Factory Authorized Dealer for more information.

Take one of our short surveys in the Contact Us tab to determine how Summit Heating and Air Conditioning can best serve you.


"Very satisfied with repair to furnace. Very good customer service, quick diagnosis and repair."

Jeff C. of Bear, DE

"Shawn was very helpful and professional. Serviced our heater a couple of times and he's one of the good guys. We trust him and Summit Heating as well. Not something that comes easy these days. It's nice to know you have a service company that is honest, reliable and is available in a timely manner."

Debby F. of Middletown, DE

"Shawn was friendly prompt, the service call was made on a Wends, they were here (right on time) Thursday morning. This was not an emergency service call although they treated it as if it was. We had heat and hot water, it was just a part of the hot water heater making a noise. Other places tried to see us a new hot water heater instead of fixing our existing one. Summit did give us the option to do either, but Summits prices were far better than their competition. Would recommend Summit to family and friends!"

Tracy S. of Middletown, DE

"Dwayne from Summit Heating & Air Conditioning was informative, not the most expensive nor the least expensive. He answered all of our many questions over several days. His crew was polite, clean, in and out, and came back to check and

Mike & Cheryl Z of Middletown, Delaware