July 25, 2019 Uncategorized

Your air conditioner is an indispensable piece of equipment in your home, especially during this time of the year. It is your first line of defense against the scorching heat of summer and all the negative effects it brings. However, many homeowners fail to maintain their cooling system and only do so when it no longer cools their home as it should. Instead of producing cool air, the AC starts blowing warm air.

Marsh Heating and Air Conditioning is your top HVAC company in Crystal MN that offers premier AC repair services. We can help you restore your home comfort in no time.


Air conditioners use refrigeration to cool indoor air by using a basic law of physics: When a liquid converts to a gas, it absorbs heat. Your AC uses this feature of conversion by forcing special compounds to evaporate and condense continuously in a closed system of coils.

A refrigerant has properties enabling it to change at relatively low temperatures. Your AC compresses the refrigerant, making it hot. Then, the hot gas moves through the coils and turns into a liquid. At that point, it absorbs the heat from the outside air and pushes cold air into your home.

Contrary to what others believe, air conditioners do not consume refrigerant, so there’s no need to fill it up every spring. Instead of consuming refrigerant, your AC cycles the same refrigerant between your indoor and outdoor units. When your system is working in tip-top shape, it will always have the same level of refrigerant. For this reason, you should be doubtful about any contractor who suggests refilling your system with refrigerant without detecting and sealing leaks.

When an air conditioner leaks refrigerant, it will show obvious warning signs that include:

Inefficient Cooling

Again, the refrigerant is responsible for absorbing heat from inside your home and moves it outside. If your system has an insufficient level of refrigerant, it will take much longer for your home to cool down since there is not enough refrigerant to take away the heat.

Freezing Coils

When there is not enough refrigerant in the system, the coils will not effectively absorb the heat. This will result in condensation on the coils to freeze. There are times when the frozen condensation will start to melt and drip on the floor. Do not neglect frozen evaporator coils because doing so could lead to a complete system failure and potentially cost you a ton of money on repair or replacement.

Unusually High Electric Bills

If you observe that there is an unexplainable jump in your electricity bills in addition to freezing coils and inefficient cooling, a refrigerant leak could be the culprit. When your air conditioner is losing refrigerant, it is forced to work harder to cool your home. This means more energy is being consumed and higher electricity bills should be expected.

A Hissing Sound

If there are cracks or holes in your coils, the refrigerant will escape through these openings. A clear indication that your AC leaks refrigerant is that it produces a hissing sound. This sound will be noticeably loud inside your home where the indoor unit is placed. In some cases, the hissing can also be heard near your outdoor unit.

Effects of Refrigerant Leaks

Not only does a refrigerant leak make you uncomfortable, but it can also affect your indoor air quality and respiratory system. Refrigerant poisoning can lead to health risks including difficulty breathing, nausea, vomiting, headaches, skin and eye irritation, and coughing.

If these symptoms are neglected, refrigerant poisoning can lead to life-threatening issues including the buildup of fluid in the lungs, irregular heartbeat, loss of consciousness, seizures, labored breathing, and death.

Furthermore, refrigerant leaks can also harm the environment, especially if you have an older unit that still uses R-22, which is now being phased out.

What to Do When You Suspect a Refrigerant Leak

When your air conditioner leaks refrigerant, it is important that you contact Marsh Heating and Air Conditioning.  We will inspect, locate, seal off leaks, and recharge your unit’s refrigerant to the right levels. This will ensure your unit is operating efficiently and safely. Your safety is our top priority. We are your reliable Golden Valley heating and air conditioning company.