Save Energy With Preventative Maintenance

Increase the efficiency of your HVAC equipment with our maintenance program. Our residential maintenance program includes a 21-point procedure that enables us to thoroughly inspect and clean all of the parts, with small repairs as needed. We perform the heating and air maintenance to make sure that your system does not have any conditions that could lead to potential problems that would result in costly repairs.

Maintenance Saves Money and Pays for Itself

Your HVAC system (Heating, Ventilation and Air Conditioning) needs to be running at peak efficiency to control operating and energy costs and prevent emergency repairs. At Boer Brothers Heating and Cooling, our HVAC Maintenance program can pay for itself, with great cost savings. Comfortable heating and cooling can be consistent with a maintenance program. We can help you “go green”, further reducing your home or business’s energy costs and helping the environment.

For every $1 spent on maintenance, our customers save as much as $3 in potential repair costs. Our dedication to helping our customers lower HVAC operating costs and improve efficiency will enable you to receive the best service and heating and air maintenance in the Durham area. Reduce your energy consumption and breathe cleaner, healthier air when you have a maintenance program with Boer Brothers Heating and Cooling.

When you have a proactive approach to maintenance, emergency service repairs are generally not needed. That is the reason why you will save a lot of money in the long run by staying consistent with manufacturer-recommended maintenance for your HVAC system.

Why should you sign up for the heating and air maintenance program at Boer Brothers? Here is a list of benefits:

  • Better efficiency
  • Reduced energy costs
  • Extended life of your HVAC system
  • Prevents larger, more costly problems from occurring
  • Greatly reduces the number of repairs
  • Receive premium, priority service
  • Convenient scheduling
  • Transferrable agreement
  • Extended appointment times so you can be present at the performance procedure.
  • Advice and ideas for energy conservation

FAQ’s About Preventative Maintenance

Keeping our customers informed about HVAC systems will help them to make better decisions and spend less on repairs and replacements. Plus, we admit that we are HVAC geeks and we love to share this information with you.

Why is preventative maintenance necessary for air conditioning and heating systems?

It is critical to the overall functioning of heating and air conditioning equipment. When preventive maintenance is not done correctly, or is not performed consistently, your HVAC system will require costly repairs at a later date, instead of keeping the system in top shape for a longer time. With maintenance, you can have a little work done now, but if you do not get maintenance, it will be a lot of more costly work done on your HVAC system later. Regular inspections are recommended every year. The operation of your HVAC equipment is verified during an inspection. Mechanical equipment is designed to work efficiently within certain limits. The best insurance against a complete HVAC shut down is preventive maintenance.

Why do condenser coils need to be cleaned?

AC systems are designed to operate within a range of outdoor temperature limits. Condensing and cooling of the refrigerant vapor is specifically designed to include a particular volume of air flowing within the condenser at the maximum ambient temperature (outdoor – usually 115°F).

If the surfaces of the outdoor coils become filled with dirt, the ability of these coils to transfer heat is lessened and the airflow is reduced through the condenser coil because it is blocked by dust and dirt. Air pressure within the AC unit and operating temperatures will increase when the ability to transfer heat is reduced. An AC unit, designed to operate efficiently at ambient temperatures of 115°F or more could stop operating when the outdoor temperature reaches 90°F. Due to the reduced heat transfer capability, the operating temperatures and pressures within the unit will exceed the manufacturer’s safe limit and cause the unit to shut down. If the unit does not shut down, it will continue to run at a reduced capacity and efficiency with an increased rate of wear and energy consumption due to the higher work load. This is why preventive maintenance is so important, since it reduces the possibility of wear, repair costs and catastrophic failure.

When is filter changing necessary and how frequently?

AC system equipment operates with a specific quantity of air passing over the indoor coil surface. If air filters are not replaced as recommended, they clog and become coated with dust and dirt. Similarly, the indoor coils will also become coated with dirt. This dirt reduces the amount of air flowing in the unit below the design limit, and the HVAC system struggles to keep up and will wear out sooner.

In the cooling mode, there needs to be a specific amount of air flowing over the indoor coil, or the coil temperature will drop. If it drops below the freezing point, ice forms on the coil, further reducing the airflow and lowering the coil temperature. A compressor within the unit is a pump, which is designed to pump a vapor. Once the airflow through the indoor coil drops, there is not enough heat being removed from the air passing over the coil, to effectively vaporize the liquid refrigerant inside of the coil. Therefore, instead of receiving a vapor, the compressor will receive liquid refrigerant.

This process is called “liquid slugging” and is similar to the effect of pouring liquid into the cylinders of a gas engine. Since liquids are not compressible, cylinder pressure will exceed the design limits of the cylinder, destroying the valves, connecting rods, internal components and pistons. First, the air conditioning unit requires that its filters be replaced. Next, it needs a new compressor. Would you prefer to pay for preventive maintenance or a new compressor? It’s your choice.

When your system is in heating mode, low airflow causes the heat exchanger to overheat. Heat exchangers are made to operate at a temperature range between 120°F and 200°F. If higher temperatures occur, the heat exchanger oxidizes, reducing the life-span, or it cracks and breaks. Either way, it makes a lot of sense to replace air filters regularly than to pay for a heat exchanger replacement.

Why is it necessary to inspect air conditioner relays and contractors?

Electrical relays are designed to open and close a required number of times with a particular current load, before the contact points become damaged and relay requires replacement. If more than the design current passes through this relay due to a motor working too hard or low voltage, the contact points will overheat and become damaged. If the electrical contacts in a contractor (large relay) start to get pitted, and the contractor is not replaced quickly, eventually the air conditioner’s compressor motor or the fan motor controlled by the contractor will burn up and require a costly replacement. So, if we exceed the design limitations of the device, or take it well past its anticipated life span, additional damage is caused. It is cheap to replace a relay or contractor during a preventive maintenance service visit, as compared to replacing a motor or compressor.

Why should the AC refrigerant charge be checked on a regular basis?

An HVAC system operating with an insufficient refrigerant charge can destroy its compressor via two scenarios. The unit icing up from a low-pressure condition causes the compressor to fail due to liquid slugging, as described before. The second type of failure is due to the fact that the compressor requires a specific quantity of cool refrigerant vapor to cool its motor windings. If the refrigerant charge is not adequate, the motor within the compressor will overheat and burn up. Our technicians can easily spot this condition during a heating and air maintenance visit and save you money.

Does lubricating bearings and rotating components make a difference?

Bearings and other rotating parts are uniquely designed to have a long, useful life span of hundreds of thousands of hours, as long as they are lubricated at designated intervals and are not overloaded due to vibration from dirty blower wheels or defective drive belts. If bearings are not lubricated regularly, they will become overheated and eventually seize. When this occurs, the bearings will fall apart, and the blower wheel, housing and shaft will be destroyed. This is an excellent example of a situation where inexpensive preventive maintenance would have prevented catastrophic results.

Why are drive belt replacements necessary?

Drive belts become loose or broken, and that causes the same problems that dirty filters cause. The airflow through the equipment will be reduced below design limits, and loose drive belts will slip on the pulleys. This wears the groove in the pulley so that when the belt is replaced, the new belt is ruined faster by the worn pulleys. With preventative maintenance, a $15.00 belt can be replaced regularly, or spend much more replacing pulleys.

HVAC Common Sense

The scenarios described above can all cause damage to occur eventually over time, usually without being detected until catastrophic failure has occurred. Regularly scheduled service and preventive maintenance on any HVAC system will lower overall air conditioning and heating service costs. Reduce emergency heating and air service calls due to catastrophic failures and enjoy lower energy costs and lower replacement costs with preventative heating and air maintenance. Repair costs will also decrease with a regular maintenance plan for your HVAC system.

HVAC RULE: A regularly maintained HVAC system will operate more efficiently, consume less energy and last longer.



Our heating and cooling preventative maintenance program is designed to help you save time, money and energy on your heating and cooling system. Unlike most companies Boer Brothers does not obligate you to sign up for a contract. Rather we have a list of people we contact by letter, email and followup phone call when the service is due, usually twice a year, but we do not require prepayment. Learn more and sign up below!

By simply maintaining your HVAC system and reducing your energy consumption, our preventive maintenance solutions help fund themselves. In fact, we have found that every $1 our clients spend in maintenance can spare them as much as $3 in repair costs.

Product independent and service driven, we are dedicated to reducing your heating, ventilation and air conditioning system’s operating costs and improving your energy efficiency through regular HVAC maintenance.

Keep Emergencies at Bay

While we offer Emergency Services, we do our best to make sure you never need to utilize them. Through our Proactive Maintenance Programs and tune-ups, we help you identify and avoid problems. With quality maintenance we can track efficiency, replace damaged equipment, and determine when systems can no longer meet usage requirements and need retrofitting.

What are the benefits of a maintenance agreement?

  • Increased efficiency
  • Lower energy costs
  • Extended equipment life
  • Inhibits small problems from becoming large ones
  • Reduces the number and cost of repairs
  • Priority service
  • We call you to arrange an appointment around your schedule
  • The agreement is transferable
  • Extended appointment hours that allow you to be present during our performance procedure.
  • Friendly advise on energy conservation ideas and options.

Our exclusive 20 point maintenance procedure: (many companies charge extra for cleaning the coils)

  • Clean burner assembly
  • Tune burners for efficiency
  • Clean ignition assembly
  • Clean furnace heat exchange or elements
  • Verify good flue draft
  • Set thermostat heat anticipation
  • Test refrigerant pressure
  • Test compression starting capabilities
  • Test safety controls
  • Clean blower assembly
  • Measure air flow
  • Adjust balancing dampers
  • Tighten electrical connections
  • Measure volts/amps
  • Lubricate all moving parts
  • Calibrate thermostat
  • Clean condenser coil
  • Clean condensate drains
  • Measure temperature difference
  • Apply protective coating

Currently the investment for a season preventative maintenance service is $89 for the first system and $69 for each additional unit for each visit.

Please let us know when you would like to set up your first appointment for service, anything you think we should know about your systems or problems you are experiencing, your address, and be sure to write “maintenance” somewhere in the request.