Care for your Air Conditioning, Maintaining your Central air Slinger

Maintaining your Air Conditioning system is important, by doing so you will have less need for repairs. Here is a nice article from

An air conditioner’s filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases. Check out our Energy Saver 101 Infographic: Home Cooling for more ways to help improve your comfort and the efficiency of your air conditioner.

Air Conditioner Filters

The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace or clean its filters. Clogged, dirty filters block normal airflow and reduce a system’s efficiency significantly. With normal airflow obstructed, air that bypasses the filter may carry dirt directly into the evaporator coil and impair the coil’s heat-absorbing capacity. Replacing a dirty, clogged filter with a clean one can lower your air conditioner’s energy consumption by 5% to 15%.

For central air conditioners, filters are generally located somewhere along the return duct’s length. Common filter locations are in walls, ceilings, furnaces, or in the air conditioner itself. Room air conditioners have a filter mounted in the grill that faces into the room.

Some types of filters are reusable; others must be replaced. They are available in a variety of types and efficiencies. Clean or replace your air conditioning system’s filter or filters every month or two during the cooling season. Filters may need more frequent attention if the air conditioner is in constant use, is subjected to dusty conditions, or you have fur-bearing pets in the house.

Air Conditioner Coils

The air conditioner’s evaporator coil and condenser coil collect dirt over their months and years of service. A clean filter prevents the evaporator coil from soiling quickly. In time, however, the evaporator coil will still collect dirt. This dirt reduces airflow and insulates the coil, reducing its ability to absorb heat. To avoid this problem, check your evaporator coil every year and clean it as necessary.

Outdoor condenser coils can also become very dirty if the outdoor environment is dusty or if there is foliage nearby. You can easily see the condenser coil and notice if dirt is collecting on its fins.

You should minimize dirt and debris near the condenser unit. Your dryer vents, falling leaves, and lawn mower are all potential sources of dirt and debris. Cleaning the area around the coil, removing any debris, and trimming foliage back at least 2 feet (0.6 meters) allow for adequate airflow around the condenser.

Coil Fins

The aluminum fins on evaporator and condenser coils are easily bent and can block airflow through the coil. Air conditioning wholesalers sell a tool called a “fin comb” that will comb these fins back into nearly original condition.

Condensate Drains

Occasionally pass a stiff wire through the unit’s drain channels. Clogged drain channels prevent a unit from reducing humidity, and the resulting excess moisture may discolor walls or carpet.

Window Seals for Room Air Conditioners

At the start of each cooling season, inspect the seal between the air conditioner and the window frame to ensure it makes contact with the unit’s metal case. Moisture can damage this seal, allowing cool air to escape from your house.

Preparing for Winter

In the winter, either cover your room air conditioner or remove and store it. Covering the outdoor unit of a central air conditioner will protect the unit from winter weather and debris.

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Energy Saving Agreements

Home comfort systems need to be regularly maintained to optimize their efficiency and safety. A regular checkup and adjustment will keep the system operating longer and save you money on your utility bills. Horsch & Miller can tailor a maintenance program for you with anywhere from one- to three-year plans to keep your equipment running efficiently and virtually trouble-free.

When you sign up for an Energy Savings Agreement, you will have peace of mind knowing your comfort system is running smoothly and will be operating when it is needed most. As an ESA customer, you will receive discounts on repairs and NO OVERTIME charges on after hours emergency repairs. You will be considered a preferred customer and get priority status for scheduling. These agreements are a wise investment in preventive maintenance to avoid “surprise” problems.


If you would like to find out how you can save money on your heating & air conditioning repairs & become one of our top priority customers, please give us a call today. 262-644-5466

Horsch & Miller Inc., is committed to providing our customers with top quality products, installations and service. Our commitment extends to providing employees with apprenticeship programs and continuing education classes. We provide our customers with the most complete, efficient job: excellent workmanship and warranty, followed by spotless clean-up, from the most experienced, knowledgeable, and fully-trained team of professional technicians in the area.

heating, air conditioning, slinger

Horsch & Miller Plumbing and Heating
136 Kettle Moraine Drive North
Slinger, WI 53086
Phone: 262-644-5466

What to do with Central Air During Storms?

What to do with your central air during Storms?  Should you turn off your air conditioner during a storm?

If it’s a central air conditioning unit, you don’t really need to turn it off due to hail.

  • When a storm threatens, remove any loose objects such as patio furniture, children’s toys, barbecue grilles and the like from the vicinity of the outdoor HVAC unit. In high wind conditions, these objects can become flying missiles that could damage the vulnerable condenser coil.
  • Cut back encroaching vegetation that could produce leaves and other debris that might clog vents and prevent the unit from proper drainage.
  • Consider turning off the unit during the storm and covering it with a canvas that fits over the entire outdoor cabinet to keep out a deluge of rain. Before restarting the system after the storm, make sure that the cover is removed.

Homeowners play an important role in preventing storm-related electrical damage to HVAC equipment. At the minimum, when a storm threatens, sensible HVAC preparedness means turning off the air conditioner or furnace at the thermostat. Better yet, homeowners could switch off the power to both the indoor and outdoor units at the circuit breaker that controls those units.

  • Install whole-house surge suppression equipment. This equipment can be installed at central locations such as the main electrical panel, and/or individual suppressors can be installed at locations such as the air handler and the outdoor compressor/condenser unit.
  • Install a programmable thermostat with time-delay technology. A time delay prevents the system from restarting after a momentary power failure until a certain time interval, usually five minutes, has elapsed. This allows sufficient time for power from the grid to stabilize after an outage and reduces the possibility of damaged HVAC equipment due to voltage spikes.
  • Install a standby generator to keep part or your entire home powered-up even if grid power is interrupted by a storm. These units are typically mounted behind or at the side of the house and often run off the home’s natural gas or propane supply, which is seldom affected by storm conditions. A standby generator constantly senses grid power and, in the event of an interruption, automatically starts and switches part or all of the home circuits over to generator power to keep systems such as HVAC equipment energized.