ONE YEAR EXTENDED WARRANTY
We guarantee parts and labor for up to one year. If anything happens within one year of your AC repair, you are fully covered.
TRUSTED HVAC COMPANY
We have received over a thousand certified ratings, reviews, recommendations, and testimonials from our customers.
Let Hillside HVAC tune-up your air conditioner. Our 15+ point A/C tune-up can pay for itself over time.
HOME A/C REPAIR COMPANY IN DE, MD, & PA
Call today if your home air conditioning system has stopped working and is no longer cooling your home.
Whether you own a central air conditioning unit, heat pump, or even a ductless mini-split, Hilliside’s HVAC technicians have the training, certifications, and knowledge to repair these cooling systems.
If your air conditioning system has stopped working, call us at 302-738-4144 (DE&PA) or 410-398-2146 (MD). We’ll come to your home and give you an HONEST ESTIMATE for any Central Air Conditioning/Heat Pump/Ductless A/C repair.
Common Problems with Cooling Systems
Here are some common problems with residential A/C systems. You might be able to resolve some of them yourself. If your air conditioner unit is leaking refrigerant or you can’t get it to work, please call us and schedule an A/C repair service.
My air conditioner won’t turn on. Check your thermostat first. Make sure your thermostat is turned on, the batteries are working, and it’s on the correct setting. If problems persist, there may be another issue. Next, take a look at your electrical panel for a tripped breaker. The breakers and fuses safeguard your A/C unit’s motor or compressor from overheating. Often when a compressor dies, one of the first parts the HVAC technician checks is the breaker.
The air isn’t cold. Again, please check your thermostat settings. If your compressor is not working, the A/C unit will not cool your house. If there’s not enough refrigerant, the compressor will run hot and eventually seize. If there’s too much, the refrigerant will return to the compressor, which can cause it to fail.
We have uneven cooling. Inconsistent temperatures are often caused by leaky ducts, insufficient insulation, or blocked registers. You can also upgrade to a zoning system to manage temperatures in certain areas or invest in a ductless heating and cooling system.
My air conditioner is making strange noises. Ignoring the strange noises from your A/C may turn minor issues into major expenses. Modern cooling systems are quieter than ever with sound-dampening technology. Mysterious noises:
- Banging is usually a sure sign that there’s a loose or broken part
- Clanking is another sign of a loose or out-of-balance part.
- Constant clicking could be a sign of a defective control or a failing thermostat.
- Buzzing noises from your outside unit could mean many things including the fan motor is loose or about to fail.
- Squeaks and squeals could be your fan motor and indoor blower motors going bad.
The sooner you can determine the cause of the noise and resolve your AC issues, the better.
Why do I have frozen evaporator coils? Your air conditioner’s evaporator coil is filled with refrigerant and is responsible for absorbing the heat from the air like a sponge. It may sound counter-intuitive, but those coils need warm air circulating around them to work properly. When something goes wrong with the airflow and the evaporator coil gets too cold, a layer of ice can build up on the outside. When that happens, you’ll get warm air or none at all coming from your air conditioning supply registers. The best ways to avoid frozen coils are to change your filter every month and schedule a tune-up so that we can test your system’s airflow and refrigerant levels and fix any problems that we might discover.
Is my refrigerant leaking? Refrigerant is the liquid that absorbs the heat from your air. When you don’t have enough, your A/C can’t absorb enough heat to cool the air. A low refrigerant level means one thing: you have a refrigerant leak. How you can tell if you have a refrigerant leak include:
- Ice buildup on the refrigerant line and the outside unit
- Bubbling or hissing noise
- A/C can’t cool home on especially hot days but cools fine on cool days and at night
If you see these signs, turn off your A/C and call an HVAC professional ASAP. Running the A/C in this state can cause slugging in the compressor and damage it beyond repair.
What if my A/C compressor stopped working? The compressor plays an important role in your A/C system. It pumps the refrigerant through your system’s cooling coils and refrigerant lines. If it’s damaged, then the A/C can’t cool your air. If there’s an issue with the compressor, then it may need replacing. Unfortunately, the compressor is one of the most expensive parts to repair or replace. You’ll have to choose to repair or replace an entire outside unit. We’ll check to see if your unit is still under warranty.
Did you remember your annual tune-up? Hillside HVAC technicians can catch minor problems before they become major headaches—leaving you hot, uncomfortable, and spending more than necessary.
Prepare your air conditioner for the summer heat by signing up for our A/C maintenance plans. Hillside Heating & Cooling’s 15+ point A/C tune-up will remove any dirt and debris built up within the system throughout the year. We’ll have your air conditioning unit running efficiently! Not only will your A/C perform better, helping you save money on your utility bill, but this preventative maintenance will also help you avoid unexpected breakdowns.
Air conditioning that has stopped working is definitely a comfort issue when the temperatures are in the 80s. It becomes a family health and safety issue when temperatures rise to the range of 90˚ and 105˚F. Older adults, young children, and people with chronic medical conditions are at high risk for heat-related illness and death. The effects of extreme heat result in numerous illnesses and deaths each year.
If we’re in extreme heat, a period of high heat and humidity with temperatures above 90 degrees for at least two to three days, your body works extra hard to maintain a normal temperature, which can lead to death. In fact, extreme heat is responsible for the highest number of annual deaths among all weather-related hazards.
WHAT’S THE DIFFERENCE BETWEEN A HEAT PUMP AND AN AIR CONDITIONER?
While essentially identical in cooling mode, heating mode is a completely different story. Air conditioners do not provide heating, but heat pumps do. Thanks to a reversing valve in the outdoor unit, a heat pump can absorb heat energy from outside air, even in extremely cold temperatures, and transfer the heat inside the home, where it releases the heat into the air. A heat pump can heat and cool, but an air conditioner cannot, which is the primary difference between the two HVAC systems. An air conditioner is typically paired with a furnace to provide heat during the cold months. Together, an air conditioner and furnace are a complete heating and cooling system.
How long does a heat pump last?
Hillside properly installs heat pumps in DE, PA, and MD that last an average of 15 years. Please note, there are several factors that can impact the life of your heat pump—heat pump make and model, heat pump usage rate, and whether or nor your heat pump has been maintained. Hillside’s HVAC professionals can extend the life of your heat pump (or air conditioning system) with our annual tune-ups.
How long does a central air conditioning last?
The lifespan of a central A/C unit is, on average,10 to 15 years. If used less frequently and maintained yearly, it may continue operating for 20 or even 25 years. Hillside properly installs central air conditioning units in DE, PA, and MD. Please note, there are a number of factors that can impact the life of your central air conditioning—the make and model, usage rate, and whether or nor your system has been maintained. Hillside’s HVAC professionals can extend the life of your central air conditioning (or heat pump) with our annual tune-ups.
How much does a new central air conditioning system or heat pump cost?
Heat pumps and central A/C pricing depend on several factors like the size of your home, model, installation requirements (e.g. existing or non-existing ducts). An indoor unit heat pump system does offer lower costs. However, the outdoor unit can come with a higher upfront investment compared to the typical air conditioner. It’s important to consider and understand the total costs to install a system that can both heat and cool your home properly.
Call us for a FREE ESTIMATE at 302-738-4144 (DE&PA) or 410-398-2146 (MD). We’ll come to your home and give you an HONEST & FREE ESTIMATE. Some units qualify for local rebates.
Why You Can Trust Hillside
★ ★ ★ ★ ★
“Easy to work with, answer questions, and great to have a real person answer the phone. My tech Joey, was efficient, answered any questions I had and tided up after. AC’s ready, and hope in fall, he’ll be back to check heater!”
Verified Facebook Reviews
The Hillside Maintenance Plans
Keeping Your Paws Comfy All Year Round
The Hillside Maintenance Plans are designed to prevent minor problems from turning into major issues! Extend the life of your equipment, reduce the need for costly repairs, and increase the performance of your heating and cooling systems while lowering your utility bills.
Join Our E-mail List 🙂
Hillside Oil Heating & Cooling has been family owned and operated for over 65 years. Three generations of family attitudes and values have allowed us to continue to successfully service our customers and communities. Everything about Hillside is locally owned and operated. We do not answer to any parent or mother corporation in some far-off land. Real human beings still work here and answer our phones. We have no touch-tone mazes to navigate in order to speak to a human being that can assist or answer questions. Customer service is the most important thing. We know what it is like to be a customer and how we like to be treated. We take pride in thinking like a customer when dealing with our customers. Support of Hillside is support for local, homegrown, family business in our area. Thank you from everyone at Hillside for your business. Hillside is a full-service home heating oil company as well as a full-service heating and air conditioning service company. We make daily deliveries of home heating oil, diesel fuels, and gasoline.
- Air Conditioning
- Heating Oil Delivery
- Commercial Fuel
- Indoor Air Quality
- Pay My Bill
- About Hillside
- Customer Care
- Service Areas
- Contact Us
- Hillside Careers
- Hillside Blog & News
- Ductless Heating and Cooling Installed By #1 HVAC Techs in DE, PA, MD
- New Furnace
- Tankless Water Heater By #1 HVAC Techs in DE, PA, MD
- Central Air Conditioning Installed By #1 HVAC Techs in DE, PA, MD
- Heat Pump Installed By #1 HVAC Techs in DE, PA, MD